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Accounts and Notes Receivable and Allowance for Credit Losses - Contractual Amounts Due under Leases (Detail) - USD ($)
$ in Millions
Jun. 30, 2015
Dec. 31, 2014
Receivables [Abstract]    
Due within one year $ 74  
Due within two years 51  
Due within three years 38  
Thereafter 1  
Total 164 $ 233
Less: Amounts representing interest 5  
Present value 159  
Current portion (included in accounts and notes receivable) 70  
Long-term portion (included in other assets, net) $ 89