Debt - Summary of Debt and Finance Leases (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Jan. 01, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Net Carrying Value, Current		$ 1,016	$ 1,088
Net Carrying Value, Long-Term		1,029	4,254
Unpaid Principal Balance		2,061	5,380
Unused Committed Amount	[1]	2,417	1,108
Net Carrying Value Finance leases, Current		486	501
Net Carrying Value Finance leases, Long-Term		568	991
Current portion of debt and finance leases		1,502	1,589	$ 2,182	$ 2,132
Net Carrying Value Total debt and finance leases, Long-Term		$ 1,597	5,245	$ 9,775	$ 9,556
2.375% Convertible Senior Notes due in 2022 [Member]
Debt Instrument [Line Items]
Debt Instrument Interest Rate Stated Percentage		2.375%
Recourse debt [Member]
Debt Instrument [Line Items]
Net Carrying Value, Current			30
Net Carrying Value, Long-Term		$ 44	1,346
Unpaid Principal Balance		44	1,377
Unused Committed Amount	[1]	2,266	920
Recourse debt [Member] | 2.375% Convertible Senior Notes due in 2022 [Member]
Debt Instrument [Line Items]
Net Carrying Value, Current			29
Unpaid Principal Balance			$ 29
Debt Instrument Interest Rate Stated Percentage			2.375%
Contractual Maturity Date			2022-03
Recourse debt [Member] | 2.00% Convertible Senior Notes due in 2024 [Member]
Debt Instrument [Line Items]
Net Carrying Value, Current			$ 1
Net Carrying Value, Long-Term		37	89
Unpaid Principal Balance		$ 37	$ 91
Debt Instrument Interest Rate Stated Percentage		2.00%	2.00%
Contractual Maturity Date		2024-05	2024-05
Recourse debt [Member] | Credit Agreement [Member]
Debt Instrument [Line Items]
Net Carrying Value, Long-Term			$ 1,250
Unpaid Principal Balance			1,250
Unused Committed Amount	[1]	$ 2,266	$ 920
Debt Instrument Interest Rate Stated Percentage			3.25%
Contractual Maturity Date		2023-07	2023-07
Recourse debt [Member] | Solar Bonds [Member]
Debt Instrument [Line Items]
Net Carrying Value, Current			$ 0
Net Carrying Value, Long-Term		$ 7	7
Unpaid Principal Balance		$ 7	$ 7
Contractual Maturity Date, Start		2025-03	2022-01
Contractual Maturity Date, End		2031-01	2031-01
Recourse debt [Member] | Solar Bonds [Member] | Minimum [Member]
Debt Instrument [Line Items]
Debt Instrument Interest Rate Stated Percentage		4.70%	4.00%
Recourse debt [Member] | Solar Bonds [Member] | Maximum [Member]
Debt Instrument [Line Items]
Debt Instrument Interest Rate Stated Percentage		5.75%	5.75%
Non-recourse debt [Member]
Debt Instrument [Line Items]
Net Carrying Value, Current		$ 1,016	$ 1,058
Net Carrying Value, Long-Term		985	2,908
Unpaid Principal Balance		2,017	4,003
Unused Committed Amount	[1]	151	188
Non-recourse debt [Member] | Automotive Asset-backed Notes [Member]
Debt Instrument [Line Items]
Net Carrying Value, Current		984	1,007
Net Carrying Value, Long-Term		613	1,706
Unpaid Principal Balance		$ 1,603	$ 2,723
Contractual Maturity Date, Start		2023-12	2022-09
Contractual Maturity Date, End		2025-09	2025-09
Non-recourse debt [Member] | Automotive Asset-backed Notes [Member] | Minimum [Member]
Debt Instrument [Line Items]
Debt Instrument Interest Rate Stated Percentage		0.36%	0.12%
Non-recourse debt [Member] | Automotive Asset-backed Notes [Member] | Maximum [Member]
Debt Instrument [Line Items]
Debt Instrument Interest Rate Stated Percentage		4.64%	5.48%
Non-recourse debt [Member] | Solar Asset-backed Notes [Member]
Debt Instrument [Line Items]
Net Carrying Value, Current		$ 4
Net Carrying Value, Long-Term		13
Unpaid Principal Balance		$ 17
Debt Instrument Interest Rate Stated Percentage		4.80%
Contractual Maturity Date		2026-12
Non-recourse debt [Member] | Solar Asset and Loan-Backed Notes [Member]
Debt Instrument [Line Items]
Net Carrying Value, Current			$ 27
Net Carrying Value, Long-Term			800
Unpaid Principal Balance			$ 844
Contractual Maturity Date, Start			2024-09
Contractual Maturity Date, End			2049-09
Non-recourse debt [Member] | Solar Asset and Loan-Backed Notes [Member] | Minimum [Member]
Debt Instrument [Line Items]
Debt Instrument Interest Rate Stated Percentage			2.87%
Non-recourse debt [Member] | Solar Asset and Loan-Backed Notes [Member] | Maximum [Member]
Debt Instrument [Line Items]
Debt Instrument Interest Rate Stated Percentage			7.74%
Non-recourse debt [Member] | Cash Equity Debt [Member]
Debt Instrument [Line Items]
Net Carrying Value, Current		$ 28	$ 24
Net Carrying Value, Long-Term		359	388
Unpaid Principal Balance		$ 397	$ 422
Contractual Maturity Date, Start		2033-07	2033-07
Contractual Maturity Date, End		2035-01	2035-01
Non-recourse debt [Member] | Cash Equity Debt [Member] | Minimum [Member]
Debt Instrument [Line Items]
Debt Instrument Interest Rate Stated Percentage		5.25%	5.25%
Non-recourse debt [Member] | Cash Equity Debt [Member] | Maximum [Member]
Debt Instrument [Line Items]
Debt Instrument Interest Rate Stated Percentage		5.81%	5.81%
Non-recourse debt [Member] | Automotive Lease-backed Credit Facilities [Member]
Debt Instrument [Line Items]
Unused Committed Amount	[1]	$ 151	$ 167
Contractual Maturity Date		2024-09	2023-09
Non-recourse debt [Member] | Other Loans [Member]
Debt Instrument [Line Items]
Net Carrying Value, Long-Term			$ 14
Unpaid Principal Balance			14
Unused Committed Amount	[1]		$ 21
Debt Instrument Interest Rate Stated Percentage			5.10%
Contractual Maturity Date			2033-02

[1] There are no restrictions on draw-down or use for general corporate purposes with respect to any available committed funds under our credit facilities, except certain specified conditions prior to draw-down, including pledging to our lenders sufficient amounts of qualified receivables, inventories, leased vehicles and our interests in those leases or various other assets and as may be described below.