Market Risk Benefits - Schedule of market risk benefits (Details) - USD ($) $ in Millions |
Mar. 31, 2024 |
Mar. 31, 2023 |
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| Market Risk Benefit [Line Items] | ||
| Asset | $ 1,172 | $ 830 |
| Liability | 5,167 | 5,144 |
| Net | 3,995 | 4,314 |
| Individual Retirement | ||
| Market Risk Benefit [Line Items] | ||
| Asset | 968 | 685 |
| Liability | 4,714 | 4,680 |
| Net | 3,746 | 3,995 |
| Group Retirement | ||
| Market Risk Benefit [Line Items] | ||
| Asset | 204 | 145 |
| Liability | 453 | 464 |
| Net | $ 249 | $ 319 |
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- Definition Market Risk Benefit, Assets, after Reinsurance and Cumulative Increase (Decrease) from Instrument-Specific Credit Risk Change No definition available.
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- Definition Market Risk Benefit, Liabilities, after Reinsurance and Cumulative Increase (Decrease) from Instrument-Specific Credit Risk Change No definition available.
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- Definition Amount, after effect of reinsurance and cumulative increase (decrease) in instrument-specific credit risk, of contract or contract feature in long-duration contract issued by insurance entity that both protects contract holder from other-than-nominal capital market risk and exposes insurance entity to other-than-nominal capital market risk. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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