v3.25.2
BORROWINGS - Narrative (Details)
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2025
USD ($)
series
Mar. 31, 2025
Jun. 30, 2025
USD ($)
series
Dec. 31, 2024
USD ($)
Debt Instrument [Line Items]        
Principal debt issued $ 10,278,000,000   $ 10,278,000,000 $ 9,036,000,000
Guarantee obligation, carrying value 4,000,000   4,000,000 3,000,000
Commercial contracts        
Debt Instrument [Line Items]        
Guarantor obligations, maximum exposure 883,000,000   883,000,000 784,000,000
Equipment residual value obligation        
Debt Instrument [Line Items]        
Guarantor obligations, maximum exposure 26,000,000   26,000,000 25,000,000
Senior notes        
Debt Instrument [Line Items]        
Debt, principal amount $ 9,750,000,000   $ 9,750,000,000  
Number of debt series | series 8   8  
Line of credit | Revolving credit facility        
Debt Instrument [Line Items]        
Line of credit outstanding $ 0   $ 0 0
4.800% senior notes due January 15, 2031 | Senior notes        
Debt Instrument [Line Items]        
Debt, principal amount $ 650,000,000   $ 650,000,000  
Stated interest rate 4.80%   4.80%  
Principal debt issued $ 650,000,000   $ 650,000,000 0
5.500% senior notes due June 15, 2035 | Senior notes        
Debt Instrument [Line Items]        
Debt, principal amount $ 850,000,000   $ 850,000,000  
Stated interest rate 5.50%   5.50%  
Principal debt issued $ 850,000,000   $ 850,000,000 $ 0
5-Year Revolving Credit Facility | Line of credit | Revolving credit facility        
Debt Instrument [Line Items]        
Debt, term   5 years 5 years 5 years
Maximum borrowing capacity 3,000,000,000   $ 3,000,000,000  
364-Day Revolving Credit Facility | Line of credit | Revolving credit facility        
Debt Instrument [Line Items]        
Debt, term   364 days 364 days 364 days
Maximum borrowing capacity 500,000,000   $ 500,000,000  
Floating rate Term Loan Facility due January 2, 2026 | Line of credit        
Debt Instrument [Line Items]        
Principal debt issued 500,000,000   $ 500,000,000 $ 750,000,000
Debt repayments 250,000,000      
Floating rate Term Loan Facility due January 2, 2026 | Line of credit | Unsecured debt        
Debt Instrument [Line Items]        
Debt, term     3 years  
Maximum borrowing capacity $ 2,000,000,000   $ 2,000,000,000