Contract with Customer, Asset and Liability (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Capitalized Contract Cost [Line Items]
Contract with Customer, Asset, Change	$ 1,430
Contract with Customer, Liability, Change	(831)
Contract liability write-off related a contract termination	381
Contract with Customer, Liability, Revenue Recognized	4,301	$ 2,763	$ 2,850
Advances received to date on contracts related to precision guided munitions to certain Middle Eastern customers pending U.S. government approval	430
Contract with Customer, Asset, Allowance for Credit Loss	$ 251	177
Contract with Customer, Asset, Allowance for Credit Loss, Write-off		111
Pratt and Whitney [Member]
Capitalized Contract Cost [Line Items]
Unfavorable EAC adjustment related to the restructuring of a customer contract		129
COVID 19 [Member]
Capitalized Contract Cost [Line Items]
Contract with Customer, Asset, Credit Loss Expense (Reversal)		$ 132