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Employee Benefit Plans (Benefit Payments Expected Future Service) (Detail) $ in Millions | Dec. 31, 2022 USD ($)
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Pension Benefits |
Defined Benefit Plan Disclosure [Line Items] |
2023 | $ 518
2024 | 527
2025 | 542
2026 | 551
2027 | 560
2028-2032 | 2,925
Other Postretirement Benefits |
Defined Benefit Plan Disclosure [Line Items] |
2023 | 99
2024 | 97
2025 | 96
2026 | 94
2027 | 93
2028-2032 | $ 433

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