v3.26.1
Debt - Schedule of Debt and Finance Leases (Details) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Mar. 31, 2026
Dec. 31, 2025
Debt Instrument [Line Items]    
Current $ 1,374 $ 1,569
Long-Term 7,645 6,584
Unpaid Principal Balance 9,039 8,177
Unused Committed Amount 5,000 6,429
Less: Current portion 73 71
Long-term portion of lease obligations 137 152
Current portion of debt and finance leases 1,447 1,640
Long-term portion of debt and finance leases 7,782 6,736
Recourse debt:    
Debt Instrument [Line Items]    
Current 0 1
Long-Term 2 2
Unpaid Principal Balance 2 3
Unused Committed Amount 5,000 5,000
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: | Other    
Debt Instrument [Line Items]    
Current $ 0 $ 1
Long-Term 2 2
Unpaid Principal Balance 2 3
Unused Committed Amount $ 0 $ 0
Contractual Maturity Date, Start 2030-03 2026-01
Contractual Maturity Date, End 2031-01 2031-01
Recourse debt: | Other | Minimum    
Debt Instrument [Line Items]    
Contractual Interest Rates 5.45% 4.70%
Recourse debt: | Other | Maximum    
Debt Instrument [Line Items]    
Contractual Interest Rates 5.75% 5.75%
Non-recourse debt:    
Debt Instrument [Line Items]    
Current $ 1,374 $ 1,568
Long-Term 7,643 6,582
Unpaid Principal Balance 9,037 8,174
Unused Committed Amount 0 1,429
Non-recourse debt: | Automotive Asset-backed Notes    
Debt Instrument [Line Items]    
Current 1,319 1,492
Long-Term 1,417 1,745
Unpaid Principal Balance 2,746 3,249
Unused Committed Amount $ 0 $ 0
Contractual Maturity Date, Start 2027-06 2026-10
Contractual Maturity Date, End 2035-06 2035-06
Non-recourse debt: | Automotive Asset-backed Notes | Minimum    
Debt Instrument [Line Items]    
Contractual Interest Rates 2.52% 2.47%
Non-recourse debt: | Automotive Asset-backed Notes | Maximum    
Debt Instrument [Line Items]    
Contractual Interest Rates 6.57% 6.57%
Non-recourse debt: | China Working Capital Facility    
Debt Instrument [Line Items]    
Current $ 0 $ 0
Long-Term 5,794 4,288
Unpaid Principal Balance 5,794 4,288
Unused Committed Amount $ 0 $ 1,429
Contractual Maturity Date   2026-03
Contractual Maturity Date, Start 2026-09  
Contractual Maturity Date, End 2027-03  
Non-recourse debt: | China Working Capital Facility | Minimum    
Debt Instrument [Line Items]    
Contractual Interest Rates 2.01% 2.01%
Non-recourse debt: | China Working Capital Facility | Maximum    
Debt Instrument [Line Items]    
Contractual Interest Rates 2.11% 2.11%
Non-recourse debt: | Energy Asset-backed Notes    
Debt Instrument [Line Items]    
Current $ 44 $ 55
Long-Term 331 337
Unpaid Principal Balance 379 397
Unused Committed Amount $ 0 $ 0
Contractual Maturity Date 2050-06  
Contractual Maturity Date, End   2050-06
Non-recourse debt: | Energy Asset-backed Notes | Minimum    
Debt Instrument [Line Items]    
Contractual Interest Rates 5.08% 5.08%
Non-recourse debt: | Energy Asset-backed Notes | Maximum    
Debt Instrument [Line Items]    
Contractual Interest Rates 6.25% 6.25%
Non-recourse debt: | Cash Equity Debt    
Debt Instrument [Line Items]    
Current $ 11 $ 21
Long-Term 101 212
Unpaid Principal Balance 118 240
Unused Committed Amount $ 0 $ 0
Contractual Interest Rates 5.25%  
Contractual Maturity Date, Start 2034-07 2034-07
Contractual Maturity Date, End   2035-01
Non-recourse debt: | Cash Equity Debt | Minimum    
Debt Instrument [Line Items]    
Contractual Interest Rates   5.25%
Non-recourse debt: | Cash Equity Debt | Maximum    
Debt Instrument [Line Items]    
Contractual Interest Rates   5.81%