Other Comprehensive Income (Loss) - Schedule of Changes in AOCI Balance by Components (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2024		Dec. 31, 2023		Dec. 31, 2022
Other Comprehensive Income (Loss):
(Loss) Income Before Reclassifications		$ 48		$ 162		$ (111)
Amounts Reclassified to Net Earnings		12		23		46
Tax Benefit (Expense)		(13)		(54)		31
Total Other Comprehensive Income (Loss)		47	[1]	131	[2]	(34)	[2]
Pension and Other Post-Employment Benefits
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance - Net of Tax		(390)		(519)		(399)
Other Comprehensive Income (Loss):
(Loss) Income Before Reclassifications		44		146		(199)
Amounts Reclassified to Net Earnings		10		18		44
Tax Benefit (Expense)		(13)		(35)		35
Total Other Comprehensive Income (Loss)		41		129		(120)
Ending Balance - Net of Tax		(349)		(390)		(519)
Interest Rate Derivatives
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance - Net of Tax		150		150		70
Other Comprehensive Income (Loss):
(Loss) Income Before Reclassifications		4		16		88
Amounts Reclassified to Net Earnings		0		0		0
Tax Benefit (Expense)		(1)		(16)		(8)
Total Other Comprehensive Income (Loss)		3		0		80
Ending Balance - Net of Tax		153		150		150
Other
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance - Net of Tax		(39)		(41)		(47)
Other Comprehensive Income (Loss):
(Loss) Income Before Reclassifications		0		0		0
Amounts Reclassified to Net Earnings		2		5		2
Tax Benefit (Expense)		1		(3)		4
Total Other Comprehensive Income (Loss)		3		2		6
Ending Balance - Net of Tax		(36)		(39)		(41)
Accumulated Other Comprehensive (Loss) Income
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance - Net of Tax		(279)		(410)		(376)
Other Comprehensive Income (Loss):
Total Other Comprehensive Income (Loss)	[2],[3]	47		131		(34)
Ending Balance - Net of Tax		$ (232)		$ (279)		$ (410)

[1] See Note 20, Revision of Prior Period Financial Statements.

[2] See Note 20, Revision of Prior Period Financial Statements.

[3] Accumulated Other Comprehensive Loss year-end balances shown above are net of tax. The associated taxes were $61 million, $74 million, and $129 million for 2024, 2023 and 2022, respectively. For additional information see Note 16, Other Comprehensive Income (Loss).