v3.24.3
Short-term and Long-term Investments, Restricted Deposits - Fair Value of Available-For-Sale Investments with Gross Unrealized Losses by Investment Type and Length of Time (Details) - USD ($)
$ in Millions
Sep. 30, 2024
Dec. 31, 2023
Unrealized Losses    
Less Than 12 Months $ (2) $ (16)
12 Months or More (543) (844)
Fair Value    
Fair Value, Less Than 12 Months 857 1,785
Fair Value, 12 Months or More 9,254 11,152
U.S. Treasury securities and obligations of U.S. government corporations and agencies    
Unrealized Losses    
Less Than 12 Months 0 0
12 Months or More (4) (8)
Fair Value    
Fair Value, Less Than 12 Months 11 79
Fair Value, 12 Months or More 163 232
Corporate securities    
Unrealized Losses    
Less Than 12 Months (1) (6)
12 Months or More (276) (455)
Fair Value    
Fair Value, Less Than 12 Months 437 658
Fair Value, 12 Months or More 5,025 6,260
Municipal securities    
Unrealized Losses    
Less Than 12 Months (1) (4)
12 Months or More (113) (167)
Fair Value    
Fair Value, Less Than 12 Months 287 553
Fair Value, 12 Months or More 2,176 2,237
Asset-backed securities    
Unrealized Losses    
Less Than 12 Months 0 (2)
12 Months or More (17) (33)
Fair Value    
Fair Value, Less Than 12 Months 43 197
Fair Value, 12 Months or More 381 855
Residential mortgage-backed securities    
Unrealized Losses    
Less Than 12 Months 0 (2)
12 Months or More (81) (101)
Fair Value    
Fair Value, Less Than 12 Months 41 153
Fair Value, 12 Months or More 795 814
Commercial mortgage-backed securities    
Unrealized Losses    
Less Than 12 Months 0 (2)
12 Months or More (52) (80)
Fair Value    
Fair Value, Less Than 12 Months 38 114
Fair Value, 12 Months or More 714 754
Short-term time deposits    
Unrealized Losses    
Less Than 12 Months 0 0
12 Months or More 0 0
Fair Value    
Fair Value, Less Than 12 Months 0 31
Fair Value, 12 Months or More $ 0 $ 0