Related Party Transactions - Additional Information (Detail) - USD ($)				6 Months Ended	12 Months Ended
	Oct. 30, 2024	Oct. 25, 2024	Jul. 15, 2024	Dec. 31, 2024	Dec. 31, 2025
Related Party Transaction [Line Items]
Redeemable percentage of outstanding public shares					100
Promissory note - related party				$ 11,824	$ 11,824
Operating costs and expenses				351,806	1,195,687
Unpaid amount of administrative services and indemnification agreement				$ 55,833	355,833
Working capital loan
Related Party Transaction [Line Items]
Debt instrument, convertible, carrying amount of equity component					$ 1,500,000
Debt instrument, convertible, conversion price					$ 10
Administrative service fee
Related Party Transaction [Line Items]
Operating costs and expenses					$ 25,000
Founder shares [member]
Related Party Transaction [Line Items]
Share-based compensation arrangement by share-based payment award, equity instruments other than options, forfeited in period	231,492
Common class B [member]
Related Party Transaction [Line Items]
Common stock, shares, outstanding				4,799,758	4,799,758
Common stock, par or stated value per share				$ 0.0001	$ 0.0001
Common stock, shares, issued			4,799,758	4,799,758	4,799,758
Sponsor [member]
Related Party Transaction [Line Items]
Share-based compensation arrangement by share-based payment award, equity instruments other than options, forfeited in period			231,492
Line of credit facility, maximum borrowing capacity			$ 300,000
Promissory note - related party				$ 11,824	$ 11,824
Operating costs and expenses				$ 55,833	$ 300,000
Sponsor [member] \| Private placement [member]
Related Party Transaction [Line Items]
Common stock, shares, issued	583,981
Stock issued during period, shares, new issues	33,981	550,000
Shares issued, price per share	$ 10	$ 10
Proceeds from issuance initial public offering	$ 339,810	$ 5,500,000
Sponsor [member] \| Common class B [member] \| Founder shares [member]
Related Party Transaction [Line Items]
Proceeds from issuance of common stock			$ 25,000
Common stock, shares, outstanding			5,031,250
Common stock, par or stated value per share			$ 0.0001

Oaktree Acquisition Corp. III Life Sciences 10-K