v3.26.1
Financial Instruments and Fair Value Measures - Debt and Credit Facilities (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2026
Jun. 30, 2025
Sep. 30, 2026
Dec. 31, 2025
Short-Term Borrowings [Line Items]          
Short-term borrowings $ 0 $ 0     $ 2,499
Repayments of other short-term borrowings   2,000 $ 0    
Commercial paper          
Short-Term Borrowings [Line Items]          
Short-term borrowings 0 $ 0     499
Short-Term Debt, Weighted Average Interest Rate, over Time   3.85% 4.64%    
364-day Term Loan Credit Agreement          
Short-Term Borrowings [Line Items]          
Line of Credit Facility, Maximum Borrowing Capacity 4,000 $ 4,000      
Short-term borrowings         2,000
Repayments of Short-Term Debt   $ 2,000      
364-day senior unsecured term loan facility | Subsequent event          
Short-Term Borrowings [Line Items]          
Line of Credit Facility, Maximum Borrowing Capacity       $ 10,000  
Senior Notes Issued in 2026          
Debt and Credit Facilities [Line Items]          
Debt Instrument, Basis Spread on Variable Rate   0.48%      
3.80% Senior Notes | Senior notes          
Debt and Credit Facilities [Line Items]          
Stated interest rate (as a percent)     3.80%    
3.80% Senior Notes | Term loan facilities          
Debt and Credit Facilities [Line Items]          
Repayments of long-term debt     $ (3,000)    
Senior Notes Issued in 2025 | Senior notes          
Debt and Credit Facilities [Line Items]          
Aggregate principal amount of debt     $ 4,000    
Senior Notes Issued in 2026 | Senior notes          
Debt and Credit Facilities [Line Items]          
Aggregate principal amount of debt 8,000 $ 8,000      
Floating Rate Senior Notes due 2028 | Senior notes          
Debt and Credit Facilities [Line Items]          
Aggregate principal amount of debt 750 750      
3.775% Senior Notes due 2028 | Senior notes          
Debt and Credit Facilities [Line Items]          
Aggregate principal amount of debt 1,500 1,500      
4.125% Senior Notes due 2031 | Senior notes          
Debt and Credit Facilities [Line Items]          
Aggregate principal amount of debt 1,250 1,250      
4.40% Senior Notes due 2033 | Senior notes          
Debt and Credit Facilities [Line Items]          
Aggregate principal amount of debt 1,250 1,250      
4.75% Senior Notes due 2036 | Senior notes          
Debt and Credit Facilities [Line Items]          
Aggregate principal amount of debt 1,500 1,500      
5.55% Senior Notes due 2056 | Senior notes          
Debt and Credit Facilities [Line Items]          
Aggregate principal amount of debt 1,250 1,250      
5.65% Senior Notes due 2066 | Senior notes          
Debt and Credit Facilities [Line Items]          
Aggregate principal amount of debt 500 500      
3.20% Senior Notes | Senior notes          
Debt and Credit Facilities [Line Items]          
Stated interest rate (as a percent)     3.20%    
3.20% Senior Notes | Term loan facilities          
Debt and Credit Facilities [Line Items]          
Repayments of long-term debt (2,000)        
3.60% Senior Notes | Senior notes          
Debt and Credit Facilities [Line Items]          
Stated interest rate (as a percent)     3.60%    
3.60% Senior Notes | Term loan facilities          
Debt and Credit Facilities [Line Items]          
Repayments of long-term debt     $ (3,800)    
Revolving Credit Facility          
Short-Term Borrowings [Line Items]          
Long-Term Line of Credit 0 0     $ 0
Revolving Credit Facility Maturing 2028          
Short-Term Borrowings [Line Items]          
Line of Credit Facility, Maximum Borrowing Capacity $ 5,000 5,000      
Revolving Credit Facility Maturing 2030          
Short-Term Borrowings [Line Items]          
Line of Credit Facility, Expiration Period 5 years        
Line of Credit Facility, Maximum Borrowing Capacity $ 3,000 $ 3,000