Other Comprehensive Income (Loss) - Schedule of Changes in AOCI balance by Component (Details) $ in Millions	6 Months Ended
	Jun. 30, 2025 USD ($)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	$ 12,507
Other Comprehensive Income (Loss)
Ending Balance	12,377
Accumulated Other Comprehensive (Loss) Income
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(232)	[1]
Other Comprehensive Income (Loss)
Amounts Reclassified to Net Earnings	11
Tax Expense	(3)
Total Other Comprehensive Income	8
Ending Balance	(224)	[1]
Pension and Other Post-Employment Benefits
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(349)
Other Comprehensive Income (Loss)
Amounts Reclassified to Net Earnings	8
Tax Expense	(2)
Total Other Comprehensive Income	6
Ending Balance	(343)
Interest Rate Derivatives
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	153
Other Comprehensive Income (Loss)
Amounts Reclassified to Net Earnings	0
Tax Expense	0
Total Other Comprehensive Income	0
Ending Balance	153
Other
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(36)
Other Comprehensive Income (Loss)
Amounts Reclassified to Net Earnings	3
Tax Expense	(1)
Total Other Comprehensive Income	2
Ending Balance	$ (34)

[1] 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, and $58 million as of June 30, 2025. For additional information, see Note 10, Other Comprehensive Income.