Significant Accounting Policies (Policies)	9 Months Ended
Sep. 30, 2025
Accounting Policies [Abstract]
Recently issued accounting pronouncements not yet adopted	Recently issued accounting pronouncements not yet adopted Improvements to Income Tax Disclosures In December 2023, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures. The amendments in this Update require, among other items, that public entities disclose, on an annual basis, (i) specific categories of income taxes in the rate reconciliation, and (ii) a disaggregation of income taxes paid by federal, state, and foreign taxes. These amendments are effective for fiscal years beginning after December 15, 2024, with early adoption permitted. The amendments are required to be applied prospectively with retrospective application permitted. We are evaluating the effect of the amendments on our consolidated financial statements and expect to disclose the required information beginning in the annual report on Form 10-K for the year ending December 31, 2025. The impact of the adoption will be limited to disclosure in the notes to consolidated financial statements for annual reporting periods. Disaggregation of Income Statement Expenses In November 2024, the FASB issued ASU 2024-03, Comprehensive income (Topic 220): Disaggregation of Income Statement Expenses. The amendments in this Update require, among other items, that public entities disclose, on an annual and interim basis, in tabular format in the footnotes to the financial statements, disaggregated information about specific categories underlying certain income statement expense line items that contain any of the following expense categories (i) purchases of inventory, (ii) employee compensation, (iii) depreciation, (iv) intangible asset amortization, and (v) depletion. Additionally, the amendments require disclosure of the total amount of selling expenses and an annual disclosure of the definition of selling expenses. These amendments are effective for fiscal years beginning after December 15, 2026, and for interim periods within fiscal years beginning after December 15, 2027, with early adoption permitted. The disclosures may be applied either prospectively or retrospectively to any or all prior periods presented in the financial statements. We are evaluating the effect of the amendments on our consolidated financial statements and expect to disclose the required information for fiscal years beginning in the annual report on Form 10-K for the year ending December 31, 2027 and for interim periods beginning in the quarterly report on Form 10-Q for the quarter ending March 31, 2028. The impact of the adoption will be limited to disclosure in the notes to consolidated financial statements. Targeted Improvements to the Accounting for Internal-Use Software In September 2025, the FASB issued ASU 2025-06, Intangibles—Goodwill and Other—Internal-Use Software (Subtopic 350-40): Targeted Improvements to the Accounting for Internal-Use Software. The amendments in this Update, among other items, remove all references to prescriptive and sequential software development stages and require entities to start capitalizing software costs when (i) management has authorized and committed to funding the software project, and (ii) it is probable that the project will be completed and the software will be used to perform the function intended. These amendments are effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2027, with early adoption permitted. The amendments permit the use of prospective, modified retrospective, or full retrospective transition approaches. We are evaluating the effect of the amendments on our consolidated financial statements and related disclosures. We expect to apply the amendments for interim periods beginning in the quarterly report on Form 10-Q for the quarter ending March 31, 2028 and for fiscal years beginning in the annual report on Form 10-K for the year ending December 31, 2028.

Significant Accounting Policies (Policies)

9 Months Ended

Sep. 30, 2025

Recently issued accounting pronouncements not yet adopted

Improvements to Income Tax Disclosures

In December 2023, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures. The amendments in this Update require, among other items, that public entities disclose, on an annual basis, (i) specific categories of income taxes in the rate reconciliation, and (ii) a disaggregation of income taxes paid by federal, state, and foreign taxes.

These amendments are effective for fiscal years beginning after December 15, 2024, with early adoption permitted. The amendments are required to be applied prospectively with retrospective application permitted. We are evaluating the effect of the amendments on our consolidated financial statements and expect to disclose the required information beginning in the annual report on Form 10-K for the year ending December 31, 2025. The impact of the adoption will be limited to disclosure in the notes to consolidated financial statements for annual reporting periods.

Disaggregation of Income Statement Expenses

In November 2024, the FASB issued ASU 2024-03, Comprehensive income (Topic 220): Disaggregation of Income Statement Expenses. The amendments in this Update require, among other items, that public entities disclose, on an annual and interim basis, in tabular format in the footnotes to the financial statements, disaggregated information about specific categories underlying certain income statement expense line items that contain any of the following expense categories (i) purchases of inventory, (ii) employee compensation, (iii) depreciation, (iv) intangible asset amortization, and (v) depletion. Additionally, the amendments require disclosure of the total amount of selling expenses and an annual disclosure of the definition of selling expenses.

These amendments are effective for fiscal years beginning after December 15, 2026, and for interim periods within fiscal years beginning after December 15, 2027, with early adoption permitted. The disclosures may be applied either prospectively or retrospectively to any or all prior periods presented in the financial statements. We are evaluating the effect of the amendments on our consolidated financial statements and expect to disclose the required information for fiscal years beginning in the annual report on Form 10-K for the year ending December 31, 2027 and for interim periods beginning in the quarterly report on Form 10-Q for the quarter ending March 31, 2028. The impact of the adoption will be limited to disclosure in the notes to consolidated financial statements.

Targeted Improvements to the Accounting for Internal-Use Software

In September 2025, the FASB issued ASU 2025-06, Intangibles—Goodwill and Other—Internal-Use Software (Subtopic 350-40): Targeted Improvements to the Accounting for Internal-Use Software. The amendments in this Update, among other items, remove all references to prescriptive and sequential software development stages and require entities to start capitalizing software costs when (i) management has authorized and committed to funding the software project, and (ii) it is probable that the project will be completed and the software will be used to perform the function intended.

These amendments are effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2027, with early adoption permitted. The amendments permit the use of prospective, modified retrospective, or full retrospective transition approaches. We are evaluating the effect of the amendments on our consolidated financial statements and related disclosures. We expect to apply the amendments for interim periods beginning in the quarterly report on Form 10-Q for the quarter ending March 31, 2028 and for fiscal years beginning in the annual report on Form 10-K for the year ending December 31, 2028.

Targa Resources Corp. 10-Q