New accounting and financial reporting pronouncements (Policies)	9 Months Ended
Sep. 30, 2024
Accounting Changes and Error Corrections [Abstract]
New accounting and financial reporting pronouncements	In March 2023, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update 2023-02, “Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method” (“ASU 2023-02”). ASU 2023-02 permits reporting entities to elect to account for tax equity investments from which the income tax credits are received using the proportional amortization method at the program level if certain conditions are met. We elected to apply the proportional accounting method to eligible affordable housing tax credit investments using the modified retrospective method. At the beginning of 2024, we recorded a charge to retained earnings of $127 million, representing the cumulative effect of adopting the proportional method on these investments. In November 2023, the FASB issued Accounting Standards Update 2023-07, “Improvements to Reportable Segment Disclosures” (“ASU 2023-07”), which requires disclosures of significant expenses by segment and interim disclosure of certain items that were previously required only on an annual basis. ASU 2023-07 is to be applied on a retrospective basis and is effective for our 2024 annual Consolidated Financial Statements and interim periods beginning in 2025. In December 2023, the FASB issued Accounting Standards Update 2023-09, “Improvements to Income Tax Disclosures” (“ASU 2023-09”), which provides for additional income tax rate reconciliation and income taxes paid disclosures. ASU 2023-09 may be adopted on a prospective or retrospective basis and is effective for fiscal years beginning after December 15, 2024, with early adoption permitted. On March 6, 2024, the U.S. Securities Exchange Commission (“SEC”) issued Release No. 33-11275 and No. 34-99678 “The Enhancement and Standardization of Climate-Related Disclosures for Investors” (“Climate Disclosure Rules”). Among its provisions, the Climate Disclosure Rules will require certain disclosures related to severe weather events and other natural conditions, as well as other disclosures about climate-related risks that materially impacted or are reasonably likely to materially impact a SEC registrant’s business strategy, results of operations or financial condition. The Climate Disclosure Rules are currently effective for large-accelerated SEC filers in annual reports for years beginning on or after January 1, 2025. However, on April 4, 2024, the SEC stayed implementation of the Climate Disclosure Rules, pending the completion of judicial review. We are evaluating the impacts ASUs 2023-07 and 2023-09 and the Climate Disclosure Rules will have on disclosures in our Consolidated Financial Statements.

New accounting and financial reporting pronouncements (Policies)

9 Months Ended

Sep. 30, 2024

Accounting Changes and Error Corrections [Abstract]

New accounting and financial reporting pronouncements

In March 2023, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update 2023-02, “Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method” (“ASU 2023-02”). ASU 2023-02 permits reporting entities to elect to account for tax equity investments from which the income tax credits are received using the proportional amortization method at the program level if certain conditions are met. We elected to apply the proportional accounting method to eligible affordable housing tax credit investments using the modified retrospective method. At the beginning of 2024, we recorded a charge to retained earnings of $127 million, representing the cumulative effect of adopting the proportional method on these investments.

In November 2023, the FASB issued Accounting Standards Update 2023-07, “Improvements to Reportable Segment Disclosures” (“ASU 2023-07”), which requires disclosures of significant expenses by segment and interim disclosure of certain items that were previously required only on an annual basis. ASU 2023-07 is to be applied on a retrospective basis and is effective for our 2024 annual Consolidated Financial Statements and interim periods beginning in 2025.

In December 2023, the FASB issued Accounting Standards Update 2023-09, “Improvements to Income Tax Disclosures” (“ASU 2023-09”), which provides for additional income tax rate reconciliation and income taxes paid disclosures. ASU 2023-09 may be adopted on a prospective or retrospective basis and is effective for fiscal years beginning after December 15, 2024, with early adoption permitted.

On March 6, 2024, the U.S. Securities Exchange Commission (“SEC”) issued Release No. 33-11275 and No. 34-99678 “The Enhancement and Standardization of Climate-Related Disclosures for Investors” (“Climate Disclosure Rules”). Among its provisions, the Climate Disclosure Rules will require certain disclosures related to severe weather events and other natural conditions, as well as other disclosures about climate-related risks that materially impacted or are reasonably likely to materially impact a SEC registrant’s business strategy, results of operations or financial condition. The Climate Disclosure Rules are currently effective for large-accelerated SEC filers in annual reports for years beginning on or after January 1, 2025. However, on April 4, 2024, the SEC stayed implementation of the Climate Disclosure Rules, pending the completion of judicial review.

We are evaluating the impacts ASUs 2023-07 and 2023-09 and the Climate Disclosure Rules will have on disclosures in our Consolidated Financial Statements.