Variable interest entities and asset securitizations - Additional Information (Detail) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
Dec. 31, 2024 |
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| Other assets for its "investment" in the common securities recognized by the company of various trusts | $ 16 | $ 16 | $ 17 | ||
| Total assets of partnerships in which the company invested | 211,584 | 211,584 | 208,105 | ||
| Variable Interest Entity Primary Beneficiary | |||||
| Total assets of partnerships in which the company invested | 10,700 | 10,700 | $ 10,500 | ||
| Federal tax credits and other federal tax benefits recognized | 10 | $ 8 | 20 | $ 15 | |
| Investments amortized to income tax expense | 45 | 45 | 89 | 88 | |
| Maximum exposure to loss of investments in real estate partnerships | 2,100 | 2,100 | |||
| Variable Interest Entity Primary Beneficiary | Renewable Energy | |||||
| Federal tax credits and other federal tax benefits recognized | $ 6 | $ 9 | |||
| Investments amortized to income tax expense | $ 12 | $ 20 | |||
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- Definition Maximum exposure to loss of investments in real estate partnerships. No definition available.
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- Definition Other assets for its "investment" in the common securities recognized by the company of various trusts. No definition available.
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- Definition Amount, before amortization expense, of income tax credit and other tax benefit generated by investment under tax credit program elected to be accounted for using proportional amortization method. Includes, but is not limited to, investment under tax credit program not meeting condition for accounting under proportional amortization method. Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
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- Definition Amount of amortization expense for investment that generates income tax credit and other income tax benefit under tax credit program accounted for using proportional amortization method. Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
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- Definition Amount of asset recognized for present right to economic benefit. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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