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Investments - Equity Security Investments (Details) - USD ($)
$ in Millions
Jun. 30, 2022
Dec. 31, 2021
Cost    
Equity securities with readily determinable fair values $ 831 $ 257
Equity securities with no readily determinable fair value 283 270
Total 1,114 527
Carrying Value    
Equity securities with readily determinable fair values 426 207
Equity securities with no readily determinable fair value 410 396
Total $ 836 $ 603