Commitments and Contingencies (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Loss Contingencies [Line Items]
Accrual For Environmental Loss Contingencies	$ 834	$ 835
Commercial Aerospace financing and other contractual commitments	15,600	$ 13,400
Other Commitment	10,300
Other Financing Arrangements [Member]
Loss Contingencies [Line Items]
Other Commitment	3,900
2019 U. S. Defense Contract Management Agency Claim Against Pratt Whitney Domain [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value	1,730
Loss Contingency, Interest	730
U.S. Defense Contract Management Agency Claim Against Pratt & Whitney [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value	177
Loss Contingency, Interest	118
U. S. Defense Contract Management Agency Claim Against Pratt Whitney Second Claim [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value	269
Loss Contingency, Interest	80
Department of Justice Claim Against Raytheon Missiles & Defense
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value	$ 290