v3.25.4
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) - USD ($)
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Summary of Significant Accounting Policies [Line Items]      
Derivative contracts, net $ 1,000,000 $ 17,000,000  
Depreciation and amortization expense related to property and equipment 2,443,000,000 2,513,000,000 $ 2,341,000,000
Amortization of capitalized software 314,000,000 324,000,000 340,000,000
Net book value of capitalized software 1,100,000,000 933,000,000  
Fuel card obligation 1,100,000,000 1,100,000,000  
Advertising expense 405,000,000 438,000,000 $ 347,000,000
Fuel Card Obligation      
Summary of Significant Accounting Policies [Line Items]      
Purchasing card maximum limit 1,100,000,000    
Fuel card obligation $ 1,100,000,000 $ 1,100,000,000  
Minimum      
Summary of Significant Accounting Policies [Line Items]      
Estimated residual value (percent) 5.00%    
Maximum      
Summary of Significant Accounting Policies [Line Items]      
Estimated residual value (percent) 10.00%    
Software and software development costs | Minimum      
Summary of Significant Accounting Policies [Line Items]      
Estimated useful life 3 years    
Software and software development costs | Maximum      
Summary of Significant Accounting Policies [Line Items]      
Estimated useful life 15 years