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Debt Investment Maturities (Detail)
$ in Millions
Jun. 30, 2020
USD ($)
Cost Basis  
Due in one year or less $ 36,169
Due after one year through five years 51,465
Due after five years through 10 years 32,299
Due after 10 years 2,967
Debt investments, Cost Basis 122,900
Estimated Fair Value  
Due in one year or less 36,276
Due after one year through five years 54,700
Due after five years through 10 years 35,674
Due after 10 years 3,148
Total $ 129,798