v3.26.1
BORROWINGS - Narrative (Details)
3 Months Ended 6 Months Ended
Mar. 31, 2026
USD ($)
Jun. 30, 2026
USD ($)
series
Dec. 31, 2025
USD ($)
Debt Instrument [Line Items]      
Guarantee obligation, carrying value   $ 3,000,000 $ 3,000,000
Commercial contracts      
Debt Instrument [Line Items]      
Guarantor obligations, maximum exposure   1,189,000,000 1,149,000,000
Equipment residual value obligation      
Debt Instrument [Line Items]      
Guarantor obligations, maximum exposure   20,000,000 22,000,000
Senior notes      
Debt Instrument [Line Items]      
Debt, principal amount   $ 9,500,000,000  
Number of debt series | series   9  
Line of credit | Revolving credit facility      
Debt Instrument [Line Items]      
Line of credit outstanding   $ 0 $ 0
5-Year Revolving Credit Facility | Line of credit | Revolving credit facility      
Debt Instrument [Line Items]      
Maximum borrowing capacity   $ 3,000,000,000  
Debt, term   5 years  
364-Day Revolving Credit Facility | Line of credit | Revolving credit facility      
Debt Instrument [Line Items]      
Maximum borrowing capacity   $ 500,000,000  
Debt, term 364 days 364 days  
Debt proceeds $ 500,000,000    
Debt repayments 500,000,000    
3-Year Delayed Draw Term Loan Facility | Line of credit | Unsecured debt      
Debt Instrument [Line Items]      
Maximum borrowing capacity   $ 650,000,000  
Debt, term   3 years  
Floating rate Delayed Draw Term Loan Facility due March 16, 2029 | Line of credit      
Debt Instrument [Line Items]      
Maximum borrowing capacity 750,000,000    
Line of credit outstanding 650,000,000    
Remaining borrowing capacity $ 100,000,000