Pension And Postretirement Benefits (Estimated Future Benefit Payments) (Details) $ in Millions |
Dec. 31, 2020
USD ($)
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| Pension Benefits | |
| Defined Benefit Plan Disclosure [Line Items] | |
| 2021 | $ 5,391 |
| 2022 | 4,597 |
| 2023 | 4,428 |
| 2024 | 4,323 |
| 2025 | 4,234 |
| Years 2026 - 2030 | 19,646 |
| Postretirement Benefits | |
| Defined Benefit Plan Disclosure [Line Items] | |
| 2021 | 1,392 |
| 2022 | 1,231 |
| 2023 | 1,159 |
| 2024 | 879 |
| 2025 | 832 |
| Years 2026 - 2030 | $ 3,651 |
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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. No definition available.
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- Definition Amount of benefits for defined benefit plan expected to be paid in five fiscal years after fifth fiscal year following latest fiscal year. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of benefits for defined benefit plan expected to be paid in next fiscal year following latest fiscal year. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of benefits for defined benefit plan expected to be paid in fifth fiscal year following latest fiscal year. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of benefits for defined benefit plan expected to be paid in fourth fiscal year following latest fiscal year. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of benefits for defined benefit plan expected to be paid in third fiscal year following latest fiscal year. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of benefits for defined benefit plan expected to be paid in second fiscal year following latest fiscal year. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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