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Debt Investment Maturities (Detail)
$ in Millions
Jun. 30, 2021
USD ($)
Adjusted Cost Basis  
Due in one year or less $ 22,612
Due after one year through five years 67,541
Due after five years through 10 years 25,212
Due after 10 years 2,601
Debt investments, Adjusted Cost Basis 117,966
Estimated Fair Value  
Due in one year or less 22,676
Due after one year through five years 70,315
Due after five years through 10 years 26,327
Due after 10 years 2,690
Total $ 122,008