Commitments and Contingencies (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Sep. 30, 2023	Dec. 31, 2023
Loss Contingencies [Line Items]
Accrual for Environmental Loss Contingencies	$ 770		$ 760
Other Commitment	12,500
Charges as a result of Pratt & Whitney's accelerated inspection of PW1100G-JM GTF engines due to rare condition in powder metal.		$ 2,900
Pratt & Whitney's net program share of PW1100 GTF program		51.00%
Increase in accrued liabilities of Pratt & Whitney's program share of PW1100 GTF program		$ 2,800
Other accrued liabilities of Pratt & Whitney's program share of PW1100 GTF program	2,700		2,800
Loss Contingency, Damages Sought, Value	306
2019 U.S. Defense Contract Management Agency Claim Against Pratt & Whitney [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value	1,730
Loss Contingency, Interest	1,090
2013 U.S. Defense Contract Management Agency Claim Against Pratt & Whitney [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value	177
Loss Contingency, Interest	162
2018 U.S. Defense Contract Management Agency Claim Against Pratt & Whitney [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value	269
Loss Contingency, Interest	131
U. S. Defense Contract Management Agency Claim Against Pratt Whitney Third Claim
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value	277
Loss Contingency, Interest	59
Other Financing Arrangements [Member]
Loss Contingencies [Line Items]
Other Commitment	3,300
Commercial Aerospace [Member]
Loss Contingencies [Line Items]
Financing and other contractual commitments	$ 14,500		$ 14,600