v3.25.2
Debt (Narrative) (Details) - USD ($)
1 Months Ended 6 Months Ended
Mar. 31, 2025
Nov. 30, 2024
Jun. 30, 2024
Mar. 31, 2024
Jun. 30, 2025
Dec. 31, 2024
Feb. 29, 2024
Debt Instrument [Line Items]              
Commercial paper         $ 150,000,000 $ 0  
Senior Notes              
Debt Instrument [Line Items]              
Debt instrument, amount   $ 7,250,000,000          
Other Debt Facilities              
Debt Instrument [Line Items]              
Revolving credit facility, amount outstanding         0 0  
Debt instrument, unused borrowing capacity         123,000,000 123,000,000  
Letters of credit outstanding, amount         $ 161,000,000 163,000,000  
3.50% Senior Debt Obligations June 2024              
Debt Instrument [Line Items]              
Interest rate (as a percent) 3.50%            
3.50% Senior Debt Obligations June 2024 | Senior Notes              
Debt Instrument [Line Items]              
Repayments of debt $ 500,000,000            
Senior notes – 4.550% due 2027              
Debt Instrument [Line Items]              
Interest rate (as a percent)   4.55%     4.55%    
Senior notes – 4.550% due 2027 | Senior Notes              
Debt Instrument [Line Items]              
Debt instrument, amount   $ 950,000,000          
4.650% Senior Debt Obligations Due 2030              
Debt Instrument [Line Items]              
Interest rate (as a percent)   4.65%          
4.650% Senior Debt Obligations Due 2030 | Senior Notes              
Debt Instrument [Line Items]              
Debt instrument, amount   $ 1,000,000,000          
Senior notes – 4.850% due 2031              
Debt Instrument [Line Items]              
Interest rate (as a percent)   4.85%     4.85%    
Senior notes – 4.850% due 2031 | Senior Notes              
Debt Instrument [Line Items]              
Debt instrument, amount   $ 1,000,000,000          
5.000% Senior Debt Obligations Due 2035              
Debt Instrument [Line Items]              
Interest rate (as a percent)   5.00%          
5.000% Senior Debt Obligations Due 2035 | Senior Notes              
Debt Instrument [Line Items]              
Debt instrument, amount   $ 2,000,000,000          
5.350% Senior Debt Obligations Due 2044              
Debt Instrument [Line Items]              
Interest rate (as a percent)   5.35%          
5.350% Senior Debt Obligations Due 2044 | Senior Notes              
Debt Instrument [Line Items]              
Debt instrument, amount   $ 500,000,000          
5.400% Senior Debt Obligations Due 2055              
Debt Instrument [Line Items]              
Interest rate (as a percent)   5.40%          
5.400% Senior Debt Obligations Due 2055 | Senior Notes              
Debt Instrument [Line Items]              
Debt instrument, amount   $ 1,500,000,000          
Senior notes – Floating due 2027 | Senior Notes              
Debt Instrument [Line Items]              
Debt instrument, amount   $ 300,000,000          
Basis spread on variable rate   0.70%          
Senior notes – 3.50% due 2024              
Debt Instrument [Line Items]              
Interest rate (as a percent)     3.50%        
Senior notes – 3.50% due 2024 | Senior Notes              
Debt Instrument [Line Items]              
Repayments of debt     $ 600,000,000        
3.875% Senior Debt Obligations October 2024              
Debt Instrument [Line Items]              
Interest rate (as a percent)       3.875%      
3.875% Senior Debt Obligations October 2024 | Senior Notes              
Debt Instrument [Line Items]              
Repayments of debt       $ 1,000,000,000      
Senior notes – 5.150% due 2034              
Debt Instrument [Line Items]              
Interest rate (as a percent)         5.15%   5.15%
Senior notes – 5.150% due 2034 | Senior Notes              
Debt Instrument [Line Items]              
Debt instrument, amount             $ 500,000,000
Senior notes – 5.450% due 2054              
Debt Instrument [Line Items]              
Interest rate (as a percent)         5.45%   5.45%
Senior notes – 5.450% due 2054 | Senior Notes              
Debt Instrument [Line Items]              
Debt instrument, amount             $ 500,000,000
Revolving Credit Facility              
Debt Instrument [Line Items]              
Revolving credit facility, borrowing capacity         $ 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  
Commercial Paper              
Debt Instrument [Line Items]              
Debt instrument, amount         $ 3,500,000,000    
Effective interest rate (as a percent)         4.60%