Portfolio Investments - Schedule of Portfolio of Investments by Industry (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Jun. 30, 2025	Sep. 30, 2024
Schedule of Investments [Line Items]
Investment owned, at cost	$ 3,012,589	$ 3,144,919
Investments at fair value	$ 2,809,377	$ 3,021,279
Investment owned, percent of net assets (as a percent)	190.28%	203.07%
Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	100.00%	100.00%
Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 2,809,377	$ 3,021,279
Investment owned, percent of net assets (as a percent)	190.28%	203.07%
Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	100.00%	100.00%
Application Software
Schedule of Investments [Line Items]
Investment owned, at cost	$ 526,740	$ 532,200
Application Software \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	17.46%	16.85%
Application Software \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 507,714	$ 523,007
Investment owned, percent of net assets (as a percent)	34.40%	35.16%
Application Software \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	18.03%	17.34%
Multi-Sector Holdings
Schedule of Investments [Line Items]
Investment owned, at cost	$ 242,096	$ 228,181
Multi-Sector Holdings \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	8.04%	7.26%
Multi-Sector Holdings \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 196,547	$ 193,579
Investment owned, percent of net assets (as a percent)	13.31%	13.01%
Multi-Sector Holdings \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	7.00%	6.41%
Health Care Services
Schedule of Investments [Line Items]
Investment owned, at cost	$ 152,074	$ 149,904
Health Care Services \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	5.05%	4.77%
Health Care Services \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 116,215	$ 127,935
Investment owned, percent of net assets (as a percent)	7.87%	8.60%
Health Care Services \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	4.14%	4.23%
Pharmaceuticals
Schedule of Investments [Line Items]
Investment owned, at cost	$ 127,081	$ 94,639
Pharmaceuticals \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	4.22%	3.01%
Pharmaceuticals \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 126,717	$ 91,804
Investment owned, percent of net assets (as a percent)	8.58%	6.17%
Pharmaceuticals \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	4.51%	3.04%
Interactive Media & Services
Schedule of Investments [Line Items]
Investment owned, at cost	$ 125,134	$ 95,564
Interactive Media & Services \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	4.15%	3.04%
Interactive Media & Services \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 126,956	$ 96,963
Investment owned, percent of net assets (as a percent)	8.60%	6.52%
Interactive Media & Services \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	4.52%	3.21%
Aerospace & Defense
Schedule of Investments [Line Items]
Investment owned, at cost	$ 122,919	$ 72,927
Aerospace & Defense \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	4.08%	2.32%
Aerospace & Defense \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 124,613	$ 74,327
Investment owned, percent of net assets (as a percent)	8.44%	5.00%
Aerospace & Defense \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	4.44%	2.46%
Health Care Equipment
Schedule of Investments [Line Items]
Investment owned, at cost	$ 90,669	$ 28,823
Health Care Equipment \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	3.01%	0.92%
Health Care Equipment \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 65,030	$ 26,264
Investment owned, percent of net assets (as a percent)	4.40%	1.77%
Health Care Equipment \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	2.31%	0.87%
Specialized Consumer Services
Schedule of Investments [Line Items]
Investment owned, at cost	$ 82,422	$ 25,763
Specialized Consumer Services \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	2.74%	0.82%
Specialized Consumer Services \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 82,434	$ 25,772
Investment owned, percent of net assets (as a percent)	5.58%	1.73%
Specialized Consumer Services \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	2.93%	0.85%
Health Care Technology
Schedule of Investments [Line Items]
Investment owned, at cost	$ 73,446	$ 105,932
Health Care Technology \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	2.44%	3.37%
Health Care Technology \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 93,695	$ 104,795
Investment owned, percent of net assets (as a percent)	6.35%	7.04%
Health Care Technology \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	3.34%	3.47%
Diversified Financial Services
Schedule of Investments [Line Items]
Investment owned, at cost	$ 69,717	$ 66,597
Diversified Financial Services \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	2.31%	2.12%
Diversified Financial Services \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 70,158	$ 66,324
Investment owned, percent of net assets (as a percent)	4.75%	4.46%
Diversified Financial Services \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	2.50%	2.20%
Metal, Glass & Plastic Containers
Schedule of Investments [Line Items]
Investment owned, at cost	$ 68,954	$ 64,769
Metal, Glass & Plastic Containers \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	2.29%	2.06%
Metal, Glass & Plastic Containers \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 10,813	$ 47,191
Investment owned, percent of net assets (as a percent)	0.73%	3.17%
Metal, Glass & Plastic Containers \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.38%	1.56%
Environmental & Facilities Services
Schedule of Investments [Line Items]
Investment owned, at cost	$ 66,354	$ 65,229
Environmental & Facilities Services \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	2.20%	2.07%
Environmental & Facilities Services \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 63,124	$ 64,119
Investment owned, percent of net assets (as a percent)	4.28%	4.31%
Environmental & Facilities Services \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	2.25%	2.12%
Airport Services
Schedule of Investments [Line Items]
Investment owned, at cost	$ 65,658	$ 63,110
Airport Services \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	2.18%	2.01%
Airport Services \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 54,155	$ 55,434
Investment owned, percent of net assets (as a percent)	3.67%	3.73%
Airport Services \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	1.93%	1.83%
Life Sciences Tools & Services
Schedule of Investments [Line Items]
Investment owned, at cost	$ 56,629	$ 0
Life Sciences Tools & Services \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	1.88%	0.00%
Life Sciences Tools & Services \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 56,838	$ 0
Investment owned, percent of net assets (as a percent)	3.85%	0.00%
Life Sciences Tools & Services \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	2.02%	0.00%
Soft Drinks & Non-alcoholic Beverages
Schedule of Investments [Line Items]
Investment owned, at cost	$ 56,286	$ 42,898
Soft Drinks & Non-alcoholic Beverages \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	1.87%	1.36%
Soft Drinks & Non-alcoholic Beverages \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 55,701	$ 42,674
Investment owned, percent of net assets (as a percent)	3.77%	2.87%
Soft Drinks & Non-alcoholic Beverages \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	1.98%	1.41%
Real Estate Operating Companies
Schedule of Investments [Line Items]
Investment owned, at cost	$ 53,567	$ 72,839
Real Estate Operating Companies \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	1.78%	2.32%
Real Estate Operating Companies \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 50,237	$ 71,246
Investment owned, percent of net assets (as a percent)	3.40%	4.79%
Real Estate Operating Companies \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	1.79%	2.36%
Systems Software
Schedule of Investments [Line Items]
Investment owned, at cost	$ 51,412	$ 39,316
Systems Software \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	1.71%	1.25%
Systems Software \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 51,848	$ 39,813
Investment owned, percent of net assets (as a percent)	3.51%	2.68%
Systems Software \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	1.85%	1.32%
Specialized Finance
Schedule of Investments [Line Items]
Investment owned, at cost	$ 50,819	$ 45,156
Specialized Finance \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	1.69%	1.44%
Specialized Finance \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 50,512	$ 44,551
Investment owned, percent of net assets (as a percent)	3.42%	2.99%
Specialized Finance \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	1.80%	1.47%
Communications Equipment
Schedule of Investments [Line Items]
Investment owned, at cost	$ 44,228	$ 46,764
Communications Equipment \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	1.47%	1.49%
Communications Equipment \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 44,046	$ 46,858
Investment owned, percent of net assets (as a percent)	2.98%	3.15%
Communications Equipment \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	1.57%	1.55%
Biotechnology
Schedule of Investments [Line Items]
Investment owned, at cost	$ 42,325	$ 43,821
Biotechnology \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	1.40%	1.39%
Biotechnology \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 44,334	$ 45,954
Investment owned, percent of net assets (as a percent)	3.00%	3.09%
Biotechnology \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	1.58%	1.52%
Diversified Support Services
Schedule of Investments [Line Items]
Investment owned, at cost	$ 42,144	$ 79,799
Diversified Support Services \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	1.40%	2.54%
Diversified Support Services \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 41,844	$ 80,638
Investment owned, percent of net assets (as a percent)	2.83%	5.42%
Diversified Support Services \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	1.49%	2.67%
Automotive Retail
Schedule of Investments [Line Items]
Investment owned, at cost	$ 41,602	$ 40,964
Automotive Retail \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	1.38%	1.30%
Automotive Retail \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 39,202	$ 39,111
Investment owned, percent of net assets (as a percent)	2.66%	2.63%
Automotive Retail \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	1.40%	1.29%
Internet Services & Infrastructure
Schedule of Investments [Line Items]
Investment owned, at cost	$ 40,746	$ 53,376
Internet Services & Infrastructure \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	1.35%	1.70%
Internet Services & Infrastructure \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 40,973	$ 53,019
Investment owned, percent of net assets (as a percent)	2.78%	3.56%
Internet Services & Infrastructure \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	1.46%	1.75%
Personal Care Products
Schedule of Investments [Line Items]
Investment owned, at cost	$ 39,486	$ 63,425
Personal Care Products \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	1.31%	2.02%
Personal Care Products \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 36,763	$ 57,451
Investment owned, percent of net assets (as a percent)	2.49%	3.86%
Personal Care Products \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	1.31%	1.90%
Data Processing & Outsourced Services
Schedule of Investments [Line Items]
Investment owned, at cost	$ 34,984	$ 80,058
Data Processing & Outsourced Services \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	1.16%	2.55%
Data Processing & Outsourced Services \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 26,134	$ 73,673
Investment owned, percent of net assets (as a percent)	1.77%	4.95%
Data Processing & Outsourced Services \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.93%	2.44%
Electrical Components & Equipment
Schedule of Investments [Line Items]
Investment owned, at cost	$ 33,392	$ 32,834
Electrical Components & Equipment \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	1.11%	1.04%
Electrical Components & Equipment \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 32,911	$ 32,246
Investment owned, percent of net assets (as a percent)	2.23%	2.17%
Electrical Components & Equipment \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	1.17%	1.07%
Packaged Foods & Meats
Schedule of Investments [Line Items]
Investment owned, at cost	$ 33,153	$ 19,863
Packaged Foods & Meats \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	1.10%	0.63%
Packaged Foods & Meats \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 33,045	$ 19,846
Investment owned, percent of net assets (as a percent)	2.24%	1.33%
Packaged Foods & Meats \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	1.18%	0.66%
Construction Machinery & Heavy Transportation Equipment
Schedule of Investments [Line Items]
Investment owned, at cost	$ 31,054	$ 25,901
Construction Machinery & Heavy Transportation Equipment \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	1.03%	0.82%
Construction Machinery & Heavy Transportation Equipment \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 31,229	$ 26,486
Investment owned, percent of net assets (as a percent)	2.12%	1.78%
Construction Machinery & Heavy Transportation Equipment \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	1.11%	0.88%
Insurance Brokers
Schedule of Investments [Line Items]
Investment owned, at cost	$ 30,584	$ 19,222
Insurance Brokers \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	1.02%	0.61%
Insurance Brokers \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 30,769	$ 19,221
Investment owned, percent of net assets (as a percent)	2.08%	1.29%
Insurance Brokers \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	1.10%	0.64%
Construction & Engineering
Schedule of Investments [Line Items]
Investment owned, at cost	$ 29,914	$ 31,602
Construction & Engineering \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.99%	1.00%
Construction & Engineering \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 29,281	$ 31,063
Investment owned, percent of net assets (as a percent)	1.98%	2.09%
Construction & Engineering \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	1.04%	1.03%
Cable & Satellite
Schedule of Investments [Line Items]
Investment owned, at cost	$ 27,888	$ 0
Cable & Satellite \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.93%	0.00%
Cable & Satellite \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 27,155	$ 0
Investment owned, percent of net assets (as a percent)	1.84%	0.00%
Cable & Satellite \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.97%	0.00%
Health Care Distributors
Schedule of Investments [Line Items]
Investment owned, at cost	$ 27,670	$ 60,316
Health Care Distributors \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.92%	1.92%
Health Care Distributors \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 26,711	$ 58,906
Investment owned, percent of net assets (as a percent)	1.81%	3.96%
Health Care Distributors \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.95%	1.95%
Research & Consulting Services
Schedule of Investments [Line Items]
Investment owned, at cost	$ 27,379	$ 0
Research & Consulting Services \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.91%	0.00%
Research & Consulting Services \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 27,245	$ 0
Investment owned, percent of net assets (as a percent)	1.85%	0.00%
Research & Consulting Services \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.97%	0.00%
Office Services & Supplies
Schedule of Investments [Line Items]
Investment owned, at cost	$ 26,986	$ 38,891
Office Services & Supplies \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.90%	1.24%
Office Services & Supplies \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 25,395	$ 38,149
Investment owned, percent of net assets (as a percent)	1.72%	2.56%
Office Services & Supplies \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.90%	1.26%
Home Improvement Retail
Schedule of Investments [Line Items]
Investment owned, at cost	$ 24,713	$ 49,891
Home Improvement Retail \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.82%	1.59%
Home Improvement Retail \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 5,314	$ 48,775
Investment owned, percent of net assets (as a percent)	0.36%	3.28%
Home Improvement Retail \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.19%	1.61%
Industrial Machinery & Supplies & Components
Schedule of Investments [Line Items]
Investment owned, at cost	$ 24,268	$ 82,624
Industrial Machinery & Supplies & Components \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.81%	2.63%
Industrial Machinery & Supplies & Components \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 25,789	$ 84,977
Investment owned, percent of net assets (as a percent)	1.75%	5.71%
Industrial Machinery & Supplies & Components \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.92%	2.81%
Wireless Telecommunication Services
Schedule of Investments [Line Items]
Investment owned, at cost	$ 24,200	$ 24,257
Wireless Telecommunication Services \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.80%	0.77%
Wireless Telecommunication Services \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 24,843	$ 24,311
Investment owned, percent of net assets (as a percent)	1.68%	1.63%
Wireless Telecommunication Services \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.88%	0.80%
Movies & Entertainment
Schedule of Investments [Line Items]
Investment owned, at cost	$ 23,792	$ 30,779
Movies & Entertainment \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.79%	0.98%
Movies & Entertainment \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 24,050	$ 30,863
Investment owned, percent of net assets (as a percent)	1.63%	2.07%
Movies & Entertainment \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.86%	1.02%
Gold
Schedule of Investments [Line Items]
Investment owned, at cost	$ 23,562	$ 23,454
Gold \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.78%	0.75%
Gold \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 24,867	$ 25,054
Investment owned, percent of net assets (as a percent)	1.68%	1.68%
Gold \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.89%	0.83%
Broadline Retail
Schedule of Investments [Line Items]
Investment owned, at cost	$ 23,172	$ 22,231
Broadline Retail \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.77%	0.71%
Broadline Retail \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 21,432	$ 22,554
Investment owned, percent of net assets (as a percent)	1.45%	1.52%
Broadline Retail \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.76%	0.75%
Hotels, Resorts & Cruise Lines
Schedule of Investments [Line Items]
Investment owned, at cost	$ 20,530	$ 20,612
Hotels, Resorts & Cruise Lines \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.68%	0.66%
Hotels, Resorts & Cruise Lines \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 20,257	$ 20,342
Investment owned, percent of net assets (as a percent)	1.37%	1.37%
Hotels, Resorts & Cruise Lines \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.72%	0.67%
Diversified Chemicals
Schedule of Investments [Line Items]
Investment owned, at cost	$ 19,920	$ 0
Diversified Chemicals \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.66%	0.00%
Diversified Chemicals \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 22,660	$ 0
Investment owned, percent of net assets (as a percent)	1.53%	0.00%
Diversified Chemicals \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.81%	0.00%
Property & Casualty Insurance
Schedule of Investments [Line Items]
Investment owned, at cost	$ 19,856	$ 0
Property & Casualty Insurance \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.66%	0.00%
Property & Casualty Insurance \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 19,715	$ 0
Investment owned, percent of net assets (as a percent)	1.34%	0.00%
Property & Casualty Insurance \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.70%	0.00%
Real Estate Services
Schedule of Investments [Line Items]
Investment owned, at cost	$ 19,323	$ 55,220
Real Estate Services \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.64%	1.76%
Real Estate Services \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 19,314	$ 54,197
Investment owned, percent of net assets (as a percent)	1.31%	3.64%
Real Estate Services \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.69%	1.79%
Oil & Gas Storage & Transportation
Schedule of Investments [Line Items]
Investment owned, at cost	$ 19,309	$ 19,309
Oil & Gas Storage & Transportation \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.64%	0.61%
Oil & Gas Storage & Transportation \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 14,043	$ 15,604
Investment owned, percent of net assets (as a percent)	0.95%	1.05%
Oil & Gas Storage & Transportation \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.50%	0.52%
Education Services
Schedule of Investments [Line Items]
Investment owned, at cost	$ 17,925	$ 8,205
Education Services \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.60%	0.26%
Education Services \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 17,304	$ 8,263
Investment owned, percent of net assets (as a percent)	1.17%	0.56%
Education Services \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.62%	0.27%
Apparel Retail
Schedule of Investments [Line Items]
Investment owned, at cost	$ 17,769	$ 17,855
Apparel Retail \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.59%	0.57%
Apparel Retail \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 17,708	$ 18,017
Investment owned, percent of net assets (as a percent)	1.20%	1.21%
Apparel Retail \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.63%	0.60%
Health Care Supplies
Schedule of Investments [Line Items]
Investment owned, at cost	$ 16,828	$ 14,426
Health Care Supplies \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.56%	0.46%
Health Care Supplies \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 16,803	$ 14,218
Investment owned, percent of net assets (as a percent)	1.14%	0.96%
Health Care Supplies \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.60%	0.47%
Real Estate Development
Schedule of Investments [Line Items]
Investment owned, at cost	$ 16,006	$ 38,237
Real Estate Development \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.53%	1.22%
Real Estate Development \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 16,098	$ 38,237
Investment owned, percent of net assets (as a percent)	1.09%	2.57%
Real Estate Development \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.57%	1.27%
Air Freight & Logistics
Schedule of Investments [Line Items]
Investment owned, at cost	$ 13,665	$ 0
Air Freight & Logistics \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.45%	0.00%
Air Freight & Logistics \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 13,668	$ 0
Investment owned, percent of net assets (as a percent)	0.93%	0.00%
Air Freight & Logistics \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.49%	0.00%
Building Products
Schedule of Investments [Line Items]
Investment owned, at cost	$ 12,623	$ 0
Building Products \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.42%	0.00%
Building Products \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 12,622	$ 0
Investment owned, percent of net assets (as a percent)	0.85%	0.00%
Building Products \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.45%	0.00%
Advertising
Schedule of Investments [Line Items]
Investment owned, at cost	$ 11,434	$ 11,418
Advertising \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.38%	0.36%
Advertising \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 11,520	$ 11,515
Investment owned, percent of net assets (as a percent)	0.78%	0.77%
Advertising \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.41%	0.38%
Alternative Carriers
Schedule of Investments [Line Items]
Investment owned, at cost	$ 8,805	$ 0
Alternative Carriers \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.29%	0.00%
Alternative Carriers \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 9,483	$ 0
Investment owned, percent of net assets (as a percent)	0.64%	0.00%
Alternative Carriers \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.34%	0.00%
Financial Exchanges & Data
Schedule of Investments [Line Items]
Investment owned, at cost	$ 7,970	$ 8,050
Financial Exchanges & Data \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.26%	0.26%
Financial Exchanges & Data \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 8,081	$ 8,065
Investment owned, percent of net assets (as a percent)	0.55%	0.54%
Financial Exchanges & Data \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.29%	0.27%
Paper & Plastic Packaging Products & Materials
Schedule of Investments [Line Items]
Investment owned, at cost	$ 4,094	$ 18,379
Paper & Plastic Packaging Products & Materials \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.14%	0.58%
Paper & Plastic Packaging Products & Materials \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 4,042	$ 18,307
Investment owned, percent of net assets (as a percent)	0.27%	1.23%
Paper & Plastic Packaging Products & Materials \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.14%	0.61%
Housewares & Specialties
Schedule of Investments [Line Items]
Investment owned, at cost	$ 2,629	$ 2,806
Housewares & Specialties \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.09%	0.09%
Housewares & Specialties \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 2,348	$ 2,546
Investment owned, percent of net assets (as a percent)	0.16%	0.17%
Housewares & Specialties \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.08%	0.08%
Home Furnishings
Schedule of Investments [Line Items]
Investment owned, at cost	$ 2,463	$ 24,102
Home Furnishings \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.08%	0.77%
Home Furnishings \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 2,463	$ 9,376
Investment owned, percent of net assets (as a percent)	0.17%	0.63%
Home Furnishings \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.09%	0.31%
Distributors
Schedule of Investments [Line Items]
Investment owned, at cost	$ 1,733	$ 1,733
Distributors \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.06%	0.06%
Distributors \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 2,837	$ 2,220
Investment owned, percent of net assets (as a percent)	0.19%	0.15%
Distributors \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.10%	0.07%
Leisure Facilities
Schedule of Investments [Line Items]
Investment owned, at cost	$ 488	$ 37,958
Leisure Facilities \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.02%	1.21%
Leisure Facilities \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 11,772	$ 37,544
Investment owned, percent of net assets (as a percent)	0.80%	2.52%
Leisure Facilities \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.42%	1.24%
Fertilizers & Agricultural Chemicals
Schedule of Investments [Line Items]
Investment owned, at cost	$ 0	$ 54,677
Fertilizers & Agricultural Chemicals \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.00%	1.74%
Fertilizers & Agricultural Chemicals \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 0	$ 54,668
Investment owned, percent of net assets (as a percent)	0.00%	3.67%
Fertilizers & Agricultural Chemicals \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.00%	1.81%
Diversified Metals & Mining
Schedule of Investments [Line Items]
Investment owned, at cost	$ 0	$ 50,061
Diversified Metals & Mining \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.00%	1.59%
Diversified Metals & Mining \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 0	$ 50,419
Investment owned, percent of net assets (as a percent)	0.00%	3.39%
Diversified Metals & Mining \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.00%	1.67%
Other Specialty Retail
Schedule of Investments [Line Items]
Investment owned, at cost	$ 0	$ 36,810
Other Specialty Retail \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.00%	1.17%
Other Specialty Retail \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 0	$ 39,660
Investment owned, percent of net assets (as a percent)	0.00%	2.67%
Other Specialty Retail \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.00%	1.31%
Passenger Airlines
Schedule of Investments [Line Items]
Investment owned, at cost	$ 0	$ 25,039
Passenger Airlines \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.00%	0.80%
Passenger Airlines \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 0	$ 26,556
Investment owned, percent of net assets (as a percent)	0.00%	1.78%
Passenger Airlines \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.00%	0.88%
Specialty Chemicals
Schedule of Investments [Line Items]
Investment owned, at cost	$ 0	$ 19,407
Specialty Chemicals \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.00%	0.62%
Specialty Chemicals \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 0	$ 19,431
Investment owned, percent of net assets (as a percent)	0.00%	1.31%
Specialty Chemicals \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.00%	0.64%
Food Distributors
Schedule of Investments [Line Items]
Investment owned, at cost	$ 0	$ 14,639
Food Distributors \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.00%	0.47%
Food Distributors \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 0	$ 15,484
Investment owned, percent of net assets (as a percent)	0.00%	1.04%
Food Distributors \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.00%	0.51%
Integrated Telecommunication Services
Schedule of Investments [Line Items]
Investment owned, at cost	$ 0	$ 2,057
Integrated Telecommunication Services \| Investment Owned, At Cost \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.00%	0.07%
Integrated Telecommunication Services \| Investment Owned, At Fair Value
Schedule of Investments [Line Items]
Investments at fair value	$ 0	$ 1,657
Investment owned, percent of net assets (as a percent)	0.00%	0.11%
Integrated Telecommunication Services \| Investment Owned, At Fair Value \| Investment Sector Concentration Risk
Schedule of Investments [Line Items]
Concentration risk (as a percent)	0.00%	0.05%

Oaktree Specialty Lending Corp 10-Q