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Debt Investment Maturities (Detail) (USD $)
In Millions, unless otherwise specified
Jun. 30, 2014
Cost Basis  
Due in one year or less $ 28,681
Due after one year through five years 46,734
Due after five years through 10 years 2,910
Due after 10 years 1,464
Total 79,789 [1]
Estimated Fair Value  
Due in one year or less 28,719
Due after one year through five years 46,881
Due after five years through 10 years 2,987
Due after 10 years 1,538
Total $ 80,125 [1]
[1] Excludes held-to-maturity investments due October 31, 2023 with a cost basis and estimated fair value at June 30, 2014 of $1.5 billion and $1.7 billion, respectively.