Commitments and Contingencies - Product Liability (Details) $ in Millions					1 Months Ended				3 Months Ended		9 Months Ended
	Oct. 15, 2024 USD ($)	Jul. 15, 2024 USD ($)	Apr. 15, 2024 USD ($)	Jan. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Sep. 30, 2023 USD ($)	Aug. 31, 2023 USD ($)	Dec. 31, 2020 plaintiff	Sep. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)	Sep. 30, 2024 USD ($)	Mar. 26, 2024	Jul. 31, 2022 USD ($)
Product Liability Litigation
Payments in common stock							$ 1,000
Environmental Matters - Other PFAS-related Environmental Litigation
Product Liability Litigation
Litigation payments											$ 3,000
Increase (decrease) accrued loss contingency reserve											500
Product Liability - Dual-Ended Combat Arms Earplugs
Product Liability Litigation
Committed amount to product liability accrual													$ 1,000
Pre-tax charge on product liability										$ 1,200
Product Liability - Dual-Ended Combat Arms Earplugs | Additional Projected Case Expenses
Product Liability Litigation
Committed amount to product liability accrual													$ 200
Product Liability - Dual-Ended Combat Arms Earplugs | Multi-district litigation (MDL)
Product Liability Litigation
Total number of named claimants | plaintiff								3
CAE Settlement
Product Liability Litigation
Loss contingency, receivable											29
Insurance receivables											$ 152
CAE Settlement | Settled Litigation
Product Liability Litigation
Pre-tax charge on product liability									$ 4,200
Settlement amount paid							6,000
Cash consideration							5,000
Payments in common stock							1,000
Accrual, net						$ 5,300	$ 1,100		$ 5,300
Estimated discount interest rate							5.60%
Litigation payments		$ 750	$ 350		$ 250	10
Payments for fees and settlements related to litigation						$ 147
Payments for additional settlements				$ 253
Participating claimants in settlement (as a percentage)											99.90%	99.00%
Participation threshold (as a percent)			98.00%
Accrued loss contingency reserve											$ 3,700
CAE Settlement | Settled Litigation | Subsequent Event
Product Liability Litigation
Payments for fees and settlements related to litigation	$ 25
CAE Settlement | Settled Litigation | Other current liabilities
Product Liability Litigation
Accrued loss contingency reserve											1,400
CAE Settlement | Settled Litigation | Other liabilities
Product Liability Litigation
Accrued loss contingency reserve											2,300
CAE Settlement | Environmental Matters - Other PFAS-related Environmental Litigation
Product Liability Litigation
Litigation payments											1,500
Increase (decrease) accrued loss contingency reserve											$ 200