XML 66 R54.htm IDEA: XBRL DOCUMENT v3.8.0.1
Financial Instruments - Additional Information (Detail) - USD ($)
3 Months Ended 9 Months Ended
Mar. 31, 2016
Sep. 30, 2017
Sep. 30, 2016
Dec. 31, 2016
Derivative Instruments, Gain (Loss) [Line Items]        
Loss related to interest rate swaps     $ (97,000,000)  
Interest rate contracts        
Derivative Instruments, Gain (Loss) [Line Items]        
Hedged forecasted transactions   6 years 1 month    
Interest rate contracts | Cash Flow Hedges        
Derivative Instruments, Gain (Loss) [Line Items]        
Loss related to interest rate swaps $ (97,000,000)      
Expected transfers of unrealized gains (losses) to earnings, within next 12 months   $ (1,000,000)    
Commodity contracts        
Derivative Instruments, Gain (Loss) [Line Items]        
Hedged forecasted transactions   3 months    
Commodity contracts | Cash Flow Hedges        
Derivative Instruments, Gain (Loss) [Line Items]        
Expected transfers of unrealized gains (losses) to earnings, within next 12 months   $ (11,000,000)    
Currency exchange contracts        
Derivative Instruments, Gain (Loss) [Line Items]        
Hedged forecasted transactions   3 months    
Currency exchange contracts | Cash Flow Hedges        
Derivative Instruments, Gain (Loss) [Line Items]        
Expected transfers of unrealized gains (losses) to earnings, within next 12 months   $ (2,000,000)    
Quoted Prices In Active Markets For Identical Assets (Level 1)        
Derivative Instruments, Gain (Loss) [Line Items]        
Derivative liabilities after effects of netting   0   $ 2,000,000
Quoted Prices In Active Markets For Identical Assets (Level 1) | Exchange Traded Options        
Derivative Instruments, Gain (Loss) [Line Items]        
Derivative assets after effects of netting   65,000,000   48,000,000
Quoted Prices In Active Markets For Identical Assets (Level 1) | Exchange Traded Options | Other current assets        
Derivative Instruments, Gain (Loss) [Line Items]        
Margin deposits related to exchange traded derivatives   198,000,000   133,000,000
Significant Other Observable Inputs (Level 2)        
Derivative Instruments, Gain (Loss) [Line Items]        
Derivative assets after effects of netting   25,000,000   162,000,000
Derivative liabilities after effects of netting   $ 409,000,000   $ 40,000,000