Financing Receivables and Operating Lease Equipment - Schedule of Customer Financing Carrying Values Related to Major Aircraft Concentrations (Details) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
B-717
Financing Receivables and Operating Lease Equipment [Line Items]
Gross customer financing	$ 447	$ 478
B747-8
Financing Receivables and Operating Lease Equipment [Line Items]
Gross customer financing	97	129
B-737
Financing Receivables and Operating Lease Equipment [Line Items]
Gross customer financing	47	156
B-777
Financing Receivables and Operating Lease Equipment [Line Items]
Gross customer financing	187	194
B747-400
Financing Receivables and Operating Lease Equipment [Line Items]
Gross customer financing		$ 43