v3.25.4
Financial Instruments - Investments - Debt Securities (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Debt Securities, Held-to-maturity, Maturity, Fair Value [Abstract]    
Debt securities, amortized cost $ 9,938 $ 11,935
Debt securities, gross unrealized gains 3 8
Debt securities, gross unrealized losses (35) (129)
Debt securities, fair value 9,906 11,814
Debt securities maturities, within 1 year, fair value 9,858  
Debt securities maturities, over 1 to 5 years, fair value 12  
Debt securities maturities, over 5 years, fair value 37  
Government and agency debt - non-U.S. [Member]    
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract]    
Available-for-sale debt securities, amortized cost 4,890 6,970
Available-for-sale debt securities, gross unrealized gain 3 8
Available-for-sale debt securities, gross unrealized loss (34) (123)
Available-for-sale securities, debt maturities 4,859 6,855
Available-for-sale Securities, Debt Maturities [Abstract]    
Available-for-sale securities, debt maturities, within 1 year, fair value 4,859  
Available-for-sale securities, debt maturities, over 1 to 5 years, fair value 1  
Available-for-sale securities, debt maturities, over 5 years, fair value 0  
Available-for-sale securities, debt maturities 4,859 6,855
Debt Securities, Held-to-maturity, Maturity [Abstract]    
Held-to-maturity securities, amortized cost 236 237
Held-to-maturity securities, gross unrealized gains 0 0
Held-to-maturity securities, gross unrealized losses 0 0
Held-to-maturity securities, fair value 236 237
Debt Securities, Held-to-maturity, Maturity, Fair Value [Abstract]    
Held-to-maturity securities, debt maturities, within 1 year, fair value 231  
Held-to-maturity securities, debt maturities, over 1 to 5 years, fair value 4  
Held-to-maturity securities, debt maturities, over 5 years, fair value 1  
Government and agency - U.S. [Member]    
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract]    
Available-for-sale debt securities, amortized cost 3,030 2,853
Available-for-sale debt securities, gross unrealized gain 0 0
Available-for-sale debt securities, gross unrealized loss 0 0
Available-for-sale securities, debt maturities 3,030 2,853
Available-for-sale Securities, Debt Maturities [Abstract]    
Available-for-sale securities, debt maturities, within 1 year, fair value 3,030  
Available-for-sale securities, debt maturities, over 1 to 5 years, fair value 0  
Available-for-sale securities, debt maturities, over 5 years, fair value 0  
Available-for-sale securities, debt maturities 3,030 2,853
Corporate and Other [Member]    
Debt Securities, Available-for-sale, Fair Value to Amortized Cost [Abstract]    
Available-for-sale debt securities, amortized cost 1,295 1,179
Available-for-sale debt securities, gross unrealized gain 0 0
Available-for-sale debt securities, gross unrealized loss (1) (6)
Available-for-sale securities, debt maturities 1,294 1,173
Available-for-sale Securities, Debt Maturities [Abstract]    
Available-for-sale securities, debt maturities, within 1 year, fair value 1,294  
Available-for-sale securities, debt maturities, over 1 to 5 years, fair value 0  
Available-for-sale securities, debt maturities, over 5 years, fair value 0  
Available-for-sale securities, debt maturities 1,294 1,173
Time deposits and other [Member]    
Debt Securities, Held-to-maturity, Maturity [Abstract]    
Held-to-maturity securities, amortized cost 487 697
Held-to-maturity securities, gross unrealized gains 0 0
Held-to-maturity securities, gross unrealized losses 0 0
Held-to-maturity securities, fair value 487 $ 697
Debt Securities, Held-to-maturity, Maturity, Fair Value [Abstract]    
Held-to-maturity securities, debt maturities, within 1 year, fair value 444  
Held-to-maturity securities, debt maturities, over 1 to 5 years, fair value 7  
Held-to-maturity securities, debt maturities, over 5 years, fair value $ 36