v3.7.0.1
Debt Investment Maturities (Detail)
$ in Millions
Jun. 30, 2017
USD ($)
Cost Basis  
Due in one year or less $ 18,212
Due after one year through five years 102,374
Due after five years through 10 years 6,478
Due after 10 years 999
Total 128,063
Estimated Fair Value  
Due in one year or less 18,188
Due after one year through five years 102,168
Due after five years through 10 years 6,504
Due after 10 years 1,019
Total $ 127,879