Financing Receivables and Operating Lease Equipment - Schedule of Customer Financing Carrying Values Related to Major Aircraft Concentrations (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Financing Receivables and Operating Lease Equipment [Line Items]
Operating lease equipment	$ 343	$ 352
B-717
Financing Receivables and Operating Lease Equipment [Line Items]
Gross customer financing	456	478
B747-8
Financing Receivables and Operating Lease Equipment [Line Items]
Gross customer financing	126	129
B-737
Financing Receivables and Operating Lease Equipment [Line Items]
Gross customer financing	142	156
Operating lease equipment	142	148
B-777
Financing Receivables and Operating Lease Equipment [Line Items]
Gross customer financing	192	194
B747-400
Financing Receivables and Operating Lease Equipment [Line Items]
Gross customer financing		$ 43