Debt Maturities (Details) - USD ($)	Dec. 31, 2023	Dec. 31, 2022
Debt Maturities [Abstract]
2019	$ 49,264,000,000
2020	34,897,000,000
2021	18,753,000,000
2022	9,897,000,000
2023	8,859,000,000
Thereafter	9,103,000,000
DebtAndCapitalLeaseObligationTotal	130,773,000,000
Debt	129,287,000,000	$ 119,039,000,000
Total unamortized discount	9,000,000	23,000,000
Unamortized debt issuance costs	(237,000,000)	(197,000,000)
Total fair value adjustments	(1,258,000,000)	$ (1,690,000,000)
Unsecured Debt [Member]
Debt Maturities [Abstract]
2019	27,255,000,000
2020	13,335,000,000
2021	10,505,000,000
2022	7,457,000,000
2023	5,035,000,000
Thereafter	9,103,000,000
Debt	72,690,000,000
Asset-backed Securities [Member]
Debt Maturities [Abstract]
2019	22,009,000,000
2020	21,562,000,000
2021	8,248,000,000
2022	2,440,000,000
2023	3,824,000,000
Thereafter	0
Debt	58,083,000,000
Short-term debt [Member]
Debt Maturities [Abstract]
2019	18,658,000,000
Long-term debt [Member]
Debt Maturities [Abstract]
2019	$ 30,606,000,000