v2.4.1.9
Estimated Future Amortization Expense for Other Intangible Assets (Detail) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]  
2015 $ 1,428us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths
2016 1,193us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo
2017 1,008us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree
2018 843us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour
2019 $ 613us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive