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Other Comprehensive Income (Loss) - Changes in AOCI Balance by Components (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Other Comprehensive Income (Loss): |  |  |  |
Income Before Reclassifications |  | $ 91 | $ (41) | $ 158
Amounts Reclassified to Net Earnings |  | 23 | 46 | 81
Tax Benefit (Expense) |  | (38) | 15 | (49)
Total Other Comprehensive Income (Note 16) |  | 76 | 20 | 190
Pension and Other Post-Employment Benefits |  |  |  |
Other Comprehensive Income (Loss): |  |  |  |
Beginning Balance |  | (497) | (431) | (598)
Income Before Reclassifications |  | 75 | (129) | 147
Amounts Reclassified to Net Earnings |  | 18 | 44 | 66
Tax Benefit (Expense) |  | (19) | 19 | (46)
Total Other Comprehensive Income (Note 16) |  | 74 | (66) | 167
Ending Balance |  | (423) | (497) | (431)
Interest Rate Derivatives |  |  |  |
Other Comprehensive Income (Loss): |  |  |  |
Beginning Balance |  | 150 | 70 | 62
Income Before Reclassifications |  | 16 | 88 | 11
Amounts Reclassified to Net Earnings |  | 0 | 0 | 0
Tax Benefit (Expense) |  | (16) | (8) | (3)
Total Other Comprehensive Income (Note 16) |  | 0 | 80 | 8
Ending Balance |  | 150 | 150 | 70
Other |  |  |  |
Other Comprehensive Income (Loss): |  |  |  |
Beginning Balance |  | (41) | (47) | (62)
Income Before Reclassifications |  | 0 | 0 | 0
Amounts Reclassified to Net Earnings |  | 5 | 2 | 15
Tax Benefit (Expense) |  | (3) | 4 | 0
Total Other Comprehensive Income (Note 16) |  | 2 | 6 | 15
Ending Balance |  | (39) | (41) | (47)
Accumulated Other Comprehensive (Loss) Income |  |  |  |
Other Comprehensive Income (Loss): |  |  |  |
Beginning Balance |  | (388) | (408) | (598)
Total Other Comprehensive Income (Note 16) | [1] | 76 | 20 | 190
Ending Balance |  | $ (312) | $ (388) | $ (408)
[1] | Accumulated Other Comprehensive Loss year-end balances shown above are net of tax. The associated taxes were $84 million, $122 million, and $107 million for 2023, 2022 and 2021, respectively. For additional information see Note 16, Other Comprehensive Income (Loss).

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