Quarterly report pursuant to Section 13 or 15(d)

Short-term and Long-term Investments, Restricted Deposits - By Investment Type (Details)

v3.21.2
Short-term and Long-term Investments, Restricted Deposits - By Investment Type (Details) - USD ($)
$ in Millions
Sep. 30, 2021
Dec. 31, 2020
Debt Securities    
Gross Unrealized Gains $ 316 $ 465
Gross Unrealized Losses (58) (18)
Equity securities 317 318
Private equity investments 561 838
Life insurance contracts 179 168
Total, Amortized Cost 15,934 15,046
Total, Fair Value 16,192 15,493
U.S. Treasury securities and obligations of U.S. government corporations and agencies    
Debt Securities    
Amortized Cost 656 907
Gross Unrealized Gains 0 4
Gross Unrealized Losses 0 0
Fair Value 656 911
Corporate securities    
Debt Securities    
Amortized Cost 7,686 6,560
Gross Unrealized Gains 178 262
Gross Unrealized Losses (37) (8)
Fair Value 7,827 6,814
Restricted certificates of deposit    
Debt Securities    
Amortized Cost 4 105
Gross Unrealized Gains 0 0
Gross Unrealized Losses 0 0
Fair Value 4 105
Restricted cash equivalents    
Debt Securities    
Amortized Cost 211 157
Gross Unrealized Gains 0 0
Gross Unrealized Losses 0 0
Fair Value 211 157
Short-term time deposits    
Debt Securities    
Amortized Cost 78 53
Gross Unrealized Gains 0 0
Gross Unrealized Losses 0 0
Fair Value 78 53
Municipal securities    
Debt Securities    
Amortized Cost 3,381 2,970
Gross Unrealized Gains 97 129
Gross Unrealized Losses (8) (2)
Fair Value 3,470 3,097
Asset-backed securities    
Debt Securities    
Amortized Cost 1,141 1,154
Gross Unrealized Gains 8 13
Gross Unrealized Losses (1) (3)
Fair Value 1,148 1,164
Residential mortgage-backed securities    
Debt Securities    
Amortized Cost 902 1,068
Gross Unrealized Gains 15 27
Gross Unrealized Losses (6) 0
Fair Value 911 1,095
Commercial mortgage-backed securities    
Debt Securities    
Amortized Cost 818 748
Gross Unrealized Gains 18 30
Gross Unrealized Losses (6) (5)
Fair Value $ 830 $ 773