Debt - Schedule of Debt Maturities (Details) $ in Millions	Jun. 30, 2026 USD ($)
Debt Instrument [Line Items]
Total	$ 19,080
2026	2,592
2027	2,317
2028	7,378
2029	4,015
2030	1,786
After 2030	992
Other Non-Vehicle Debt
Debt Instrument [Line Items]
Total	5,246
2026	209
2027	18
2028	2,757
2029	2,251
2030	0
After 2030	11
Exchangeable Notes Due 2029
Debt Instrument [Line Items]
Total	282
2026	0
2027	0
2028	0
2029	282
2030	0
After 2030	0
Exchangeable Notes Due 2030
Debt Instrument [Line Items]
Total	425
2026	0
2027	0
2028	0
2029	0
2030	425
After 2030	0
Exchangeable First Lien Notes Due 2030
Debt Instrument [Line Items]
Total	350
2026	0
2027	0
2028	0
2029	0
2030	350
After 2030	0
Non-vehicle
Debt Instrument [Line Items]
Total	6,303
2026	209
2027	18
2028	2,757
2029	2,533
2030	775
After 2030	11
Vehicle Debt
Debt Instrument [Line Items]
Total	12,777
2026	2,383
2027	2,299
2028	4,621
2029	1,482
2030	1,011
After 2030	$ 981

Long-Term Debt, Maturity, after Year Four

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