Pension and Other Benefit Plans - Pension Plan, Net Periodic Costs and Other Changes (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Dec. 31, 2022 |
Dec. 31, 2021 |
Dec. 31, 2022 |
Dec. 31, 2021 |
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| Retirement Benefits [Abstract] | ||||
| Service cost | $ 18 | $ 22 | $ 55 | $ 67 |
| Interest cost | 62 | 50 | 192 | 153 |
| Expected return on assets | (120) | (139) | (374) | (432) |
| Amortization of prior service costs | (2) | (2) | (6) | (6) |
| Contractual termination benefit | 0 | (3) | 0 | (2) |
| Recognition of actuarial loss | 0 | 7 | 1 | 7 |
| Net periodic pension income | $ (42) | $ (65) | $ (132) | $ (213) |
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- Definition Defined Benefit Plan, Contractual Termination Benefits No definition available.
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- References No definition available.
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- Definition Amount of prior service cost (credit) recognized in net periodic benefit cost (credit) of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of cost recognized for passage of time related to defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of net periodic benefit cost (credit) for defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of gain (loss) recognized in net periodic benefit (cost) credit from irrevocable action relieving primary responsibility for benefit obligation and eliminating risk related to obligation and assets used to effect settlement. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of cost for actuarial present value of benefits attributed to service rendered by employee for defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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