Commitments and Contingencies (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Dec. 31, 2023	Sep. 30, 2023	Dec. 31, 2023	Dec. 31, 2022
Loss Contingencies [Line Items]
Accrual For Environmental Loss Contingencies	$ 760		$ 760	$ 798
Commercial Aerospace financing and other contractual commitments	14,600		14,600	$ 15,300
Other Commitment	12,300		12,300
ChargesAsAResultOfPrattWhitneysAcceleratedInspectionOfPW1100GJMGTFEnginesDueToRareConditionInPowderMetal		$ 2,900
Pratt & Whitney's net program share of PW1100 GTF program		51.00%
Pratt & Whitney's reduction of sales for PW1100 GTF rare powder metal condition		$ 5,400
Pratt & Whitney's reduction of cost of sales for PW100 GTF rare powder metal condition		2,500
Increase in accrued liabilities of Pratt & Whitney's program share of PW1100 GTF program		$ 2,800
Partner Share of Pratt & Whitney Powder Metal Charge		49.00%
Utilization of accrued liability related to powder metal matter	0
Other Financing Arrangements [Member]
Loss Contingencies [Line Items]
Other Commitment	3,400		3,400
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	1,040		1,040
U.S. Defense Contract Management Agency Claim Against Pratt & Whitney [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value			177
Loss Contingency, Interest	155		155
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	123		123
U. S. Defense Contract Management Agency Claim Against Pratt Whitney Third Claim [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value			277
Loss Contingency, Interest	$ 52		52
Department of Justice Claim Against Raytheon [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value			$ 300