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Other Comprehensive Income (Loss) - Changes in AOCI Balance by Component (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023
Other Comprehensive Income (Loss) |  |  |
Income Before Reclassifications |  | $ 3 |
Amounts Reclassified to Net Earnings |  | 5 |
Tax Expense |  | (2) |
Total Other Comprehensive Income |  | 6 | $ 2
Pension and Other Post-Employment Benefits |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |
Balance December 31, 2023, Net of Tax |  | (423) |
Other Comprehensive Income (Loss) |  |  |
Income Before Reclassifications |  | 0 |
Amounts Reclassified to Net Earnings |  | 3 |
Tax Expense |  | (1) |
Total Other Comprehensive Income |  | 2 |
Balance March 31, 2024, Net of Tax |  | (421) |
Interest Rate Derivatives |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |
Balance December 31, 2023, Net of Tax |  | 150 |
Other Comprehensive Income (Loss) |  |  |
Income Before Reclassifications |  | 3 |
Amounts Reclassified to Net Earnings |  | 0 |
Tax Expense |  | (1) |
Total Other Comprehensive Income |  | 2 |
Balance March 31, 2024, Net of Tax |  | 152 |
Other |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |
Balance December 31, 2023, Net of Tax |  | (39) |
Other Comprehensive Income (Loss) |  |  |
Income Before Reclassifications |  | 0 |
Amounts Reclassified to Net Earnings |  | 2 |
Tax Expense |  | 0 |
Total Other Comprehensive Income |  | 2 |
Balance March 31, 2024, Net of Tax |  | (37) |
Accumulated Other Comprehensive (Loss) Income |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |
Balance December 31, 2023, Net of Tax |  | (312) |
Other Comprehensive Income (Loss) |  |  |
Total Other Comprehensive Income | [1] | 6 | $ 2
Balance March 31, 2024, Net of Tax |  | $ (306) |
[1] | (a) Accumulated Other Comprehensive Loss balances shown above are net of tax. The associated taxes were $82 million and $121 million as of March 31, 2024 and March 31, 2023, respectively. For additional information, see Note 10, Other Comprehensive Income.

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