v3.24.1.u1
Debt - Summary of Debt and Finance Leases (Detail) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Mar. 31, 2024
Dec. 31, 2023
Debt Instrument [Line Items]    
Current $ 2,135 $ 1,975
Long-Term 2,739 2,682
Unpaid Principal Balance 4,900 4,683
Unused Committed Amount 5,000 5,028
Less: Current portion 326 398
Long-term portion of lease obligations 160 175
Current portion of debt and finance leases 2,461 2,373
Long-term portion of debt and finance leases 2,899 2,857
Recourse debt:    
Debt Instrument [Line Items]    
Current 48 37
Long-Term 6 7
Unpaid Principal Balance 54 44
Unused Committed Amount 5,000 5,028
Recourse debt: | 2024 Notes    
Debt Instrument [Line Items]    
Current 21 37
Long-Term 0 0
Unpaid Principal Balance 21 37
Unused Committed Amount $ 0 $ 0
Contractual Interest Rates 2.00% 2.00%
Contractual Maturity Date 2024-05 2024-05
Recourse debt: | RCF Credit Agreement    
Debt Instrument [Line Items]    
Current $ 0 $ 0
Long-Term 0 0
Unpaid Principal Balance 0 0
Unused Committed Amount $ 5,000 $ 5,000
Contractual Maturity Date 2028-01 2028-01
Recourse debt: | Solar Bonds    
Debt Instrument [Line Items]    
Current $ 1 $ 0
Long-Term 6 7
Unpaid Principal Balance 7 7
Unused Committed Amount $ 0 $ 0
Contractual Maturity Date, Start 2025-03 2025-03
Contractual Maturity Date, End 2031-01 2031-01
Recourse debt: | Solar Bonds | Minimum    
Debt Instrument [Line Items]    
Contractual Interest Rates 4.70% 4.70%
Recourse debt: | Solar Bonds | Maximum    
Debt Instrument [Line Items]    
Contractual Interest Rates 5.75% 5.75%
Recourse debt: | Other    
Debt Instrument [Line Items]    
Current $ 26 $ 0
Long-Term 0 0
Unpaid Principal Balance 26 0
Unused Committed Amount $ 0 $ 28
Contractual Interest Rates 5.20%  
Contractual Maturity Date 2026-12 2026-12
Non-recourse debt:    
Debt Instrument [Line Items]    
Current $ 2,087 $ 1,938
Long-Term 2,733 2,675
Unpaid Principal Balance 4,846 4,639
Unused Committed Amount 0 0
Non-recourse debt: | Automotive Asset-backed Notes    
Debt Instrument [Line Items]    
Current 2,054 1,906
Long-Term 2,405 2,337
Unpaid Principal Balance 4,475 4,259
Unused Committed Amount $ 0 $ 0
Contractual Maturity Date, Start 2024-12 2024-07
Contractual Maturity Date, End 2031-05 2031-05
Non-recourse debt: | Automotive Asset-backed Notes | Minimum    
Debt Instrument [Line Items]    
Contractual Interest Rates 0.60% 0.60%
Non-recourse debt: | Automotive Asset-backed Notes | Maximum    
Debt Instrument [Line Items]    
Contractual Interest Rates 6.57% 6.57%
Non-recourse debt: | Solar Asset-backed Notes    
Debt Instrument [Line Items]    
Current $ 4 $ 4
Long-Term 7 8
Unpaid Principal Balance 12 13
Unused Committed Amount $ 0 $ 0
Contractual Interest Rates 4.80% 4.80%
Contractual Maturity Date 2026-12 2026-12
Non-recourse debt: | Cash Equity Debt    
Debt Instrument [Line Items]    
Current $ 29 $ 28
Long-Term 321 330
Unpaid Principal Balance 359 367
Unused Committed Amount $ 0 $ 0
Contractual Maturity Date, Start 2033-07 2033-07
Contractual Maturity Date, End 2035-01 2035-01
Non-recourse debt: | Cash Equity Debt | Minimum    
Debt Instrument [Line Items]    
Contractual Interest Rates 5.25% 5.25%
Non-recourse debt: | Cash Equity Debt | Maximum    
Debt Instrument [Line Items]    
Contractual Interest Rates 5.81% 5.81%