Debt Investment Maturities (Detail) $ in Millions	Jun. 30, 2022 USD ($)
Adjusted Cost Basis
Due in one year or less	$ 26,480
Due after one year through five years	52,006
Due after five years through 10 years	18,274
Due after 10 years	1,358
Debt investments, Adjusted Cost Basis	98,118
Estimated Fair Value
Due in one year or less	26,470
Due after one year through five years	50,748
Due after five years through 10 years	16,880
Due after 10 years	1,259
Total	$ 95,357