Other Comprehensive Income (Loss) - Schedule of Changes in AOCI balance by Component (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2025	Mar. 31, 2024	[1]
Other Comprehensive Income (Loss)
Amounts Reclassified to Net Earnings		$ 6
Tax Expense		(1)
Total Other Comprehensive Income		5	$ 6
Pension and Other Post-Employment Benefits
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance December 31, 2024, Net of Tax		(349)
Other Comprehensive Income (Loss)
Amounts Reclassified to Net Earnings		4
Tax Expense		(1)
Total Other Comprehensive Income		3
Balance March 31, 2025, Net of Tax		(346)
Interest Rate Derivatives
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance December 31, 2024, Net of Tax		153
Other Comprehensive Income (Loss)
Amounts Reclassified to Net Earnings		0
Tax Expense		0
Total Other Comprehensive Income		0
Balance March 31, 2025, Net of Tax		153
Other
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance December 31, 2024, Net of Tax		(36)
Other Comprehensive Income (Loss)
Amounts Reclassified to Net Earnings		2
Tax Expense		0
Total Other Comprehensive Income		2
Balance March 31, 2025, Net of Tax		(34)
Accumulated Other Comprehensive (Loss) Income
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance December 31, 2024, Net of Tax		(232)
Other Comprehensive Income (Loss)
Total Other Comprehensive Income	[2]	5	$ 6
Balance March 31, 2025, Net of Tax		$ (227)

[1] See the 2024 annual report filed on Form 10-K for revision of prior period financial statements.

[2] Accumulated Other Comprehensive Loss balances shown above are net of tax. The associated taxes were $61 million as of December 31, 2024, $59 million as of March 31, 2025, $74 million as of December 31, 2023 and $72 million as of March 31, 2024. For additional information, see Note 10, Other Comprehensive Income.