v3.26.1
Debt (Outstanding Debt) (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Mar. 31, 2026
Feb. 28, 2026
Dec. 31, 2025
Debt Instrument [Line Items]        
Commercial paper $ 1,024     $ 0
Current portion of long-term debt 646     1,267
Short-term debt 1,670     1,267
Long-term debt 19,537     19,587
Long-term debt, net 18,891     18,320
Senior notes – 1.349% due 2026        
Debt Instrument [Line Items]        
Long-term debt $ 626     647
Interest rate (as a percent) 1.349%      
Senior notes – 3.750% due 2026        
Debt Instrument [Line Items]        
Long-term debt $ 0     600
Interest rate (as a percent) 3.75% 3.75%    
Senior notes – 4.550% due 2027        
Debt Instrument [Line Items]        
Long-term debt $ 947     946
Interest rate (as a percent) 4.55%      
Senior notes – Floating due 2027        
Debt Instrument [Line Items]        
Long-term debt $ 299     299
Senior notes – Floating due 2027 | Senior Notes        
Debt Instrument [Line Items]        
Basis spread on variable rate (as a percent) 0.70%      
Senior notes – 4.375% due 2029        
Debt Instrument [Line Items]        
Long-term debt $ 1,500     1,499
Interest rate (as a percent) 4.375%      
Senior notes – 1.979% due 2030        
Debt Instrument [Line Items]        
Long-term debt $ 625     646
Interest rate (as a percent) 1.979%      
Senior notes – 2.250% due 2030        
Debt Instrument [Line Items]        
Long-term debt $ 744     744
Interest rate (as a percent) 2.25%      
Senior notes – 4.650% due 2030        
Debt Instrument [Line Items]        
Long-term debt $ 993     992
Interest rate (as a percent) 4.65%      
Senior notes – 2.375% due 2031        
Debt Instrument [Line Items]        
Long-term debt $ 398     398
Interest rate (as a percent) 2.375%      
Senior notes – 4.850% due 2031        
Debt Instrument [Line Items]        
Long-term debt $ 993     992
Interest rate (as a percent) 4.85%      
Senior notes – 5.750% due 2032        
Debt Instrument [Line Items]        
Long-term debt $ 495     494
Interest rate (as a percent) 5.75%      
Senior notes – 5.875% due 2033        
Debt Instrument [Line Items]        
Long-term debt $ 299     298
Interest rate (as a percent) 5.875%      
Senior notes – 5.400% due 2033        
Debt Instrument [Line Items]        
Long-term debt $ 594     594
Interest rate (as a percent) 5.40%      
Senior notes – 5.150% due 2034        
Debt Instrument [Line Items]        
Long-term debt $ 496     496
Interest rate (as a percent) 5.15%      
Senior notes – 5.000% due 2035        
Debt Instrument [Line Items]        
Long-term debt $ 1,983     1,983
Interest rate (as a percent) 5.00%      
Senior notes – 4.950% due 2036        
Debt Instrument [Line Items]        
Long-term debt $ 595     0
Interest rate (as a percent) 4.95%   4.95%  
Senior notes – 4.750% due 2039        
Debt Instrument [Line Items]        
Long-term debt $ 496     496
Interest rate (as a percent) 4.75%      
Senior notes – 5.350% due 2044        
Debt Instrument [Line Items]        
Long-term debt $ 495     495
Interest rate (as a percent) 5.35%      
Senior notes – 4.350% due 2047        
Debt Instrument [Line Items]        
Long-term debt $ 494     494
Interest rate (as a percent) 4.35%      
Senior notes – 4.200% due 2048        
Debt Instrument [Line Items]        
Long-term debt $ 594     594
Interest rate (as a percent) 4.20%      
Senior notes – 4.900% due 2049        
Debt Instrument [Line Items]        
Long-term debt $ 1,240     1,240
Interest rate (as a percent) 4.90%      
Senior notes – 2.900% due 2051        
Debt Instrument [Line Items]        
Long-term debt $ 346     346
Interest rate (as a percent) 2.90%      
Senior notes – 6.250% due 2052        
Debt Instrument [Line Items]        
Long-term debt $ 492     492
Interest rate (as a percent) 6.25%      
Senior notes – 5.450% due 2053        
Debt Instrument [Line Items]        
Long-term debt $ 591     591
Interest rate (as a percent) 5.45%      
Senior notes – 5.700% due 2053        
Debt Instrument [Line Items]        
Long-term debt $ 989     989
Interest rate (as a percent) 5.70%      
Senior notes – 5.450% due 2054        
Debt Instrument [Line Items]        
Long-term debt $ 494     493
Interest rate (as a percent) 5.45%      
Senior notes – 5.400% due 2055        
Debt Instrument [Line Items]        
Long-term debt $ 1,479     1,479
Interest rate (as a percent) 5.40%      
Mortgage – 5.701% due 2035        
Debt Instrument [Line Items]        
Long-term debt $ 239     249
Interest rate (as a percent) 5.701%      
Other        
Debt Instrument [Line Items]        
Long-term debt $ 1     $ 1