v3.26.1
Debt (Narrative) (Details) - USD ($)
1 Months Ended 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2026
Feb. 28, 2026
Dec. 31, 2025
Debt Instrument [Line Items]          
Commercial Paper $ 1,000,000,000.0   $ 1,000,000,000.0   $ 0
Other Debt Facilities          
Debt Instrument [Line Items]          
Revolving credit facility, amount outstanding 0   0   0
Debt instrument, unused borrowing capacity 121,000,000   121,000,000   122,000,000
Letters of credit outstanding, amount $ 155,000,000   $ 155,000,000   150,000,000
Senior notes – 3.750% due 2026          
Debt Instrument [Line Items]          
Interest rate (as a percent) 3.75%   3.75%    
Senior notes – 3.750% due 2026 | Senior Notes          
Debt Instrument [Line Items]          
Repayments of debt $ 600,000,000        
Senior notes – 4.950% due 2036          
Debt Instrument [Line Items]          
Interest rate (as a percent) 4.95%   4.95% 4.95%  
Senior notes – 4.950% due 2036 | Senior Notes          
Debt Instrument [Line Items]          
Debt instrument, amount       $ 600,000,000  
Senior notes – 3.500% due 2025          
Debt Instrument [Line Items]          
Interest rate (as a percent)   3.50%      
Senior notes – 3.500% due 2025 | Senior Notes          
Debt Instrument [Line Items]          
Repayments of debt   $ 500,000,000      
Revolving Credit Facility          
Debt Instrument [Line Items]          
Revolving credit facility, borrowing capacity $ 3,500,000,000   $ 3,500,000,000    
Debt instrument, term     5 years    
Revolving Credit Facility | Amended Revolving Credit Facility          
Debt Instrument [Line Items]          
Revolving credit facility, amount outstanding 0   $ 0   $ 0
Commercial Paper          
Debt Instrument [Line Items]          
Debt instrument, amount $ 3,500,000,000   $ 3,500,000,000    
Effective interest rate (as a percent) 4.06%   4.06%