Fair Value Measurements (Details 3) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Fair Value, Level 2
Financial Instruments, Financial Liabilities, Balance Sheet Groupings
Long-term debt	$ 22,797	$ 24,614
Fair Value, Level 3
Financial Instruments, Financial Assets, Balance Sheet Groupings
Finance receivables, net (excluding finance leases)	19,047	18,910
Carrying  Amount
Financial Instruments, Financial Assets, Balance Sheet Groupings
Finance receivables, net (excluding finance leases)	19,068	18,599
Financial Instruments, Financial Liabilities, Balance Sheet Groupings
Long-term debt	22,594	23,979
Carrying amount of assets excluded from measurement at fair value
Financial Instruments, Financial Assets, Balance Sheet Groupings
Finance leases and failed sale leasebacks, Carrying Value	$ 8,110	$ 7,980