Fair Value Measurements (Details 3) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Fair Value, Level 2
Financial Instruments, Financial Liabilities, Balance Sheet Groupings
Long-term debt	$ 23,010	$ 22,797
Fair Value, Level 3
Financial Instruments, Financial Assets, Balance Sheet Groupings
Finance receivables, net (excluding finance leases)	19,180	19,047
Carrying Amount
Financial Instruments, Financial Assets, Balance Sheet Groupings
Finance receivables, net (excluding finance leases)	19,433	19,068
Financial Instruments, Financial Liabilities, Balance Sheet Groupings
Long-term debt	23,320	22,594
Carrying amount of assets excluded from measurement at fair value
Financial Instruments, Financial Liabilities, Balance Sheet Groupings
Finance leases and failed sale leasebacks, Carrying Value	$ 7,920	$ 8,110