Financing Receivables and Operating Lease Equipment - Schedule of Customer Financing Carrying Values Related to Major Aircraft Concentrations (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Financing Receivables and Operating Lease Equipment [Line Items]
Operating lease equipment	$ 352	$ 470
B-717 Aircraft
Financing Receivables and Operating Lease Equipment [Line Items]
Gross customer financing	478	563
Operating lease equipment	0	45
B-747-8
Financing Receivables and Operating Lease Equipment [Line Items]
Gross customer financing	129	394
B-737 Aircraft
Financing Receivables and Operating Lease Equipment [Line Items]
Gross customer financing	156	186
Operating lease equipment	148	174
B-777
Financing Receivables and Operating Lease Equipment [Line Items]
Gross customer financing	194	209
Operating lease equipment	194	209
MD-80 Aircraft
Financing Receivables and Operating Lease Equipment [Line Items]
Gross customer financing		96
B-757 Aircraft
Financing Receivables and Operating Lease Equipment [Line Items]
Gross customer financing		107
B-747-400 aircraft
Financing Receivables and Operating Lease Equipment [Line Items]
Gross customer financing	$ 43	$ 46