Quarterly report pursuant to Section 13 or 15(d)

Amount and Location in the Income Statement for Derivatives Designed as Cash Flow Hedges (Detail)

v3.7.0.1
Amount and Location in the Income Statement for Derivatives Designed as Cash Flow Hedges (Detail) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Cash Flow Hedging [Member]    
Derivative Instruments, Gain (Loss) [Line Items]    
Amount of Gain (Loss) Recognized in OCI on Derivative (Effective Portion) $ (47) $ (160)
Cash Flow Hedging [Member] | Interest Rate Contracts    
Derivative Instruments, Gain (Loss) [Line Items]    
Amount of Gain (Loss) Recognized in OCI on Derivative (Effective Portion) 0 (2)
Cash Flow Hedging [Member] | Foreign Exchange Contracts    
Derivative Instruments, Gain (Loss) [Line Items]    
Amount of Gain (Loss) Recognized in OCI on Derivative (Effective Portion) (47) (158)
Net Investment Hedging [Member]    
Derivative Instruments, Gain (Loss) [Line Items]    
Amount of Gain (Loss) Recognized in OCI on Derivative (Effective Portion) (37) (85)
Net Investment Hedging [Member] | Foreign Exchange Contracts    
Derivative Instruments, Gain (Loss) [Line Items]    
Amount of Gain (Loss) Recognized in OCI on Derivative (Effective Portion) $ (37) $ (85)