v3.26.1
Fair Value Measurements - Schedule of Carrying Values and Fair Values of Short-Term and Long-term Debt (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Carrying Amount | Senior Notes | Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt $ 72,247 $ 74,575
Carrying Amount | Senior Notes | Third Party (EUR-denominated) | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt 8,284 5,551
Carrying Amount | Senior Notes | Related Party | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt 0 1,498
Carrying Amount | Senior Secured Notes | Third Party | Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt 748 844
Carrying Amount | ABS Notes | Third Party | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt 1,994 1,995
Carrying Amount | ECA Facility | Third Party | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt 2,774 1,819
Fair Value | Senior Notes | Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt 67,093 70,517
Fair Value | Senior Notes | Third Party (EUR-denominated) | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt 8,060 5,460
Fair Value | Senior Notes | Related Party | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt 0 1,500
Fair Value | Senior Secured Notes | Third Party | Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt 738 835
Fair Value | ABS Notes | Third Party | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt 2,003 2,017
Fair Value | ECA Facility | Third Party | Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Long-term debt $ 2,828 $ 1,876