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Debt - Schedule of Current Availability on Debt and Cash (Detail) - USD ($)
$ in Thousands
Mar. 31, 2026
Dec. 31, 2025
Debt Instrument [Line Items]    
Credit facilities $ 6,390,000  
Outstanding letters of credit 26,000  
Current availability 5,811,000  
Cash and cash equivalents 861,144 $ 1,145,647
Total liquidity 6,672,000  
Credit Facilities [Member]    
Debt Instrument [Line Items]    
Borrowings outstanding 243,000  
Commercial Paper [Member]    
Debt Instrument [Line Items]    
Borrowings outstanding [1] $ 310,000  
[1] We are required to maintain available commitments under our credit facilities in an amount at least equal to the commercial paper borrowings outstanding.