Fair Value Disclosures - Summary of Fair Value of Financial Instruments (Details) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Carrying Amount
Assets
Finance receivables, net (excluding finance leases)	$ 22,024	$ 20,746
Liabilities
Long-term debt	25,496	23,612
Fair Value | Fair Value, Level 3
Assets
Finance receivables, net (excluding finance leases)	21,691	20,330
Fair Value | Fair Value, Level 2
Liabilities
Long-term debt	25,472	23,299
Carrying amount of assets excluded from measurement at fair value
Liabilities
Finance leases and failed sale leasebacks, Carrying Value	$ 7,130	$ 7,000