v3.7.0.1
Estimated Future Amortization Expense for Other Intangible Assets (Detail)
$ in Millions
Mar. 31, 2017
USD ($)
Finite-Lived Intangible Assets [Line Items]  
Remainder of 2017 $ 1,438
2018 1,632
2019 1,409
2020 1,168
2021 $ 985