v3.24.3
Short-term and Long-term Investments, Restricted Deposits - Contractual Maturities of Short-Term and Long-Term Investments and Restricted Deposits (Details) - USD ($)
$ in Millions
Sep. 30, 2024
Dec. 31, 2023
Investments    
Amortized Cost    
One year or less $ 2,751 $ 2,308
One year through five years 7,795 7,738
Five years through ten years 4,354 3,905
Greater than ten years 209 155
Asset-backed securities 4,729 4,317
Amortized Cost 19,838 18,423
Fair Value    
One year or less 2,733 2,284
One year through five years 7,667 7,431
Five years through ten years 4,318 3,735
Greater than ten years 206 154
Asset-backed securities 4,635 4,117
Fair Value 19,559 17,721
Restricted Deposits    
Amortized Cost    
One year or less 400 566
One year through five years 685 527
Five years through ten years 311 298
Greater than ten years 70 34
Asset-backed securities 0 0
Amortized Cost 1,466 1,425
Fair Value    
One year or less 399 564
One year through five years 677 504
Five years through ten years 306 283
Greater than ten years 70 35
Asset-backed securities 0 0
Fair Value $ 1,452 $ 1,386