Debt - Summary of Debt and Finance Leases (Detail) - USD ($) $ in Millions		3 Months Ended		12 Months Ended
		Mar. 31, 2023		Dec. 31, 2022
Debt Instrument [Line Items]
Net Carrying Value, Current		$ 935		$ 1,016
Net Carrying Value, Long-Term		817		1,029
Unpaid Principal Balance		1,766		2,061
Unused Committed Amount		5,155	[1]	2,417	[2]
Net Carrying Value Finance leases, Current		469		486
Net Carrying Value Finance leases, Long-Term		455		568
Current portion of debt and finance leases		1,404		1,502
Net Carrying Value Total debt and finance leases, Long-Term		1,272		1,597
Recourse debt [Member]
Debt Instrument [Line Items]
Net Carrying Value, Long-Term		44		44
Unpaid Principal Balance		44		44
Unused Committed Amount		5,000	[1]	2,266	[2]
Recourse debt [Member] | 2.00% Convertible Senior Notes due in 2024 [Member]
Debt Instrument [Line Items]
Net Carrying Value, Long-Term		37		37
Unpaid Principal Balance		$ 37		$ 37
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]
Unused Committed Amount	[2]			$ 2,266
Contractual Maturity Date				2023-07
Recourse debt [Member] | RCF Credit Agreement [Member]
Debt Instrument [Line Items]
Unused Committed Amount	[1]	$ 5,000
Contractual Maturity Date		2028-01
Recourse debt [Member] | Solar Bonds [Member]
Debt Instrument [Line Items]
Net Carrying Value, Long-Term		$ 7		$ 7
Unpaid Principal Balance		$ 7		$ 7
Contractual Maturity Date, Start		2025-03		2025-03
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%		4.70%
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		$ 935		$ 1,016
Net Carrying Value, Long-Term		773		985
Unpaid Principal Balance		1,722		2,017
Unused Committed Amount		155	[1]	151	[2]
Non-recourse debt [Member] | Automotive Asset-backed Notes [Member]
Debt Instrument [Line Items]
Net Carrying Value, Current		903		984
Net Carrying Value, Long-Term		410		613
Unpaid Principal Balance		$ 1,317		$ 1,603
Contractual Maturity Date, Start		2024-02		2023-12
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%		0.36%
Non-recourse debt [Member] | Automotive Asset-backed Notes [Member] | Maximum [Member]
Debt Instrument [Line Items]
Debt Instrument Interest Rate Stated Percentage		4.64%		4.64%
Non-recourse debt [Member] | Solar Asset-backed Notes [Member]
Debt Instrument [Line Items]
Net Carrying Value, Current		$ 4		$ 4
Net Carrying Value, Long-Term		12		13
Unpaid Principal Balance		$ 16		$ 17
Debt Instrument Interest Rate Stated Percentage		4.80%		4.80%
Contractual Maturity Date		2026-12		2026-12
Non-recourse debt [Member] | Cash Equity Debt [Member]
Debt Instrument [Line Items]
Net Carrying Value, Current		$ 28		$ 28
Net Carrying Value, Long-Term		351		359
Unpaid Principal Balance		$ 389		$ 397
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		$ 155	[1]	$ 151	[2]
Contractual Maturity Date		2024-09		2024-09

[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 our leased vehicles and our interests in those leases and as may be described below and in the notes to the consolidated financial statements included in our report on Form 10-K for the year ended December 31, 2022.

[2] 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 in the notes to the consolidated financial statements included in our report on Form 10-K for the year ended December 31, 2022.