v3.26.3
Financial Instruments - Additional Information (Details)
$ / shares in Units, $ in Millions
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2026
USD ($)
Sep. 30, 2025
USD ($)
Sep. 30, 2026
USD ($)
$ / shares
shares
Sep. 30, 2025
USD ($)
Dec. 31, 2025
USD ($)
Jun. 30, 2026
USD ($)
Jun. 30, 2025
USD ($)
Dec. 31, 2024
USD ($)
Derivative [Line Items]                
Trade and other receivables, net $ 483   $ 483   $ 500      
Debt securities interest income     142   105      
Net loss on equity method investment 21 $ 21 64 $ 68        
Net loss (gain) on equity and other investments 117 62 (72) 401        
Klaviyo, Inc.                
Derivative [Line Items]                
Net loss (gain) on equity and other investments   75 65 147        
Equity Securities Without Readily Determinable Fair Value                
Derivative [Line Items]                
Total carrying value of equity and other investments without readily determinable fair values $ 1,706 $ 974 $ 1,706 $ 974 $ 963 $ 1,555 $ 988 $ 717
Call Option | Klaviyo, Inc.                
Derivative [Line Items]                
Option to purchase series B common shares | shares     15,743,174          
Exercise price (in dollars per share) | $ / shares     $ 88.93          
Discount for Lack of Marketability | Klaviyo, Inc.                
Derivative [Line Items]                
Derivative asset, measurement input 0.18   0.18   0.21      
Fair value $ 10   $ 10   $ 75      
Foreign Exchange Forward                
Derivative [Line Items]                
Foreign exchange forward contracts, notional value 779   779   702      
Level 3 | Fair Value, Nonrecurring                
Derivative [Line Items]                
Total carrying value of equity and other investments without readily determinable fair values 1,380   1,380          
Accrued interest                
Derivative [Line Items]                
Trade and other receivables, net $ 25   $ 25   $ 39