Leasing - Schedule of Depreciation Expense on Operating Lease Assets (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Leases [Abstract]
Operating lease revenue	$ 316	$ 385	$ 1,005	$ 1,179
Depreciation expense on operating lease assets (excluding remarketing gains)	225	269	711	812
Remarketing gains, net	(24)	(57)	(129)	(174)
Net depreciation expense on operating lease assets	201	212	582	638
Variable lease payments, excessive wear and tear	$ 6	$ 3	$ 16	$ 7