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Debt Investment Maturities (Detail)
$ in Millions
Dec. 31, 2021
USD ($)
Adjusted Cost Basis  
Due in one year or less $ 34,136
Due after one year through five years 56,690
Due after five years through 10 years 21,898
Due after 10 years 2,673
Debt investments, Adjusted Cost Basis 115,397
Estimated Fair Value  
Due in one year or less 34,305
Due after one year through five years 58,435
Due after five years through 10 years 22,472
Due after 10 years 2,752
Total $ 117,964