v3.26.1
Financial Instruments and Fair Value Measures - Debt and Credit Facilities (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Short-Term Borrowings [Line Items]      
Short-term borrowings $ 0   $ 2,499
Repayments of other short-term borrowings 2,000 $ 0  
Commercial paper      
Short-Term Borrowings [Line Items]      
Short-term borrowings $ 0   499
Short-Term Debt, Weighted Average Interest Rate, over Time 3.85% 4.59%  
364-day Term Loan Credit Agreement      
Short-Term Borrowings [Line Items]      
Line of Credit Facility, Maximum Borrowing Capacity $ 4,000    
Short-term borrowings     2,000
Repayments of Short-Term Debt $ 2,000    
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    
Floating Rate Senior Notes due 2028 | Senior notes      
Debt and Credit Facilities [Line Items]      
Aggregate principal amount of debt 750    
3.775% Senior Notes due 2028 | Senior notes      
Debt and Credit Facilities [Line Items]      
Aggregate principal amount of debt 1,500    
4.125% Senior Notes due 2031 | Senior notes      
Debt and Credit Facilities [Line Items]      
Aggregate principal amount of debt 1,250    
4.40% Senior Notes due 2033 | Senior notes      
Debt and Credit Facilities [Line Items]      
Aggregate principal amount of debt 1,250    
4.75% Senior Notes due 2036 | Senior notes      
Debt and Credit Facilities [Line Items]      
Aggregate principal amount of debt 1,500    
5.55% Senior Notes due 2056 | Senior notes      
Debt and Credit Facilities [Line Items]      
Aggregate principal amount of debt 1,250    
5.65% Senior Notes due 2066 | Senior notes      
Debt and Credit Facilities [Line Items]      
Aggregate principal amount of debt 500    
Revolving Credit Facility      
Short-Term Borrowings [Line Items]      
Long-Term Line of Credit 0   $ 0
Revolving Credit Facility Maturing 2028      
Short-Term Borrowings [Line Items]      
Line of Credit Facility, Maximum Borrowing Capacity $ 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