Segment and Revenue Information - Components of Financial Accounting Standards and Cost Accounting Standards Adjustment (Details) - Other - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting Information [Line Items]
FAS/CAS service cost adjustment	$ 1,104	$ 1,056	$ 1,143
Pension
Segment Reporting Information [Line Items]
FAS/CAS service cost adjustment	811	799	849
Other Postretirement Benefits
Segment Reporting Information [Line Items]
FAS/CAS service cost adjustment	$ 293	$ 257	$ 294