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Accounts and Notes Receivable and Allowance for Credit Losses - Contractual Amounts Due under Leases (Detail) - USD ($)
$ in Millions
Sep. 30, 2015
Dec. 31, 2014
Receivables [Abstract]    
Due within one year $ 65  
Due within two years 45  
Due within three years 31  
Thereafter 1  
Total 142 $ 233
Less: Amounts representing interest 5  
Present value 137  
Current portion (included in accounts and notes receivable) 62  
Long-term portion (included in other assets, net) $ 75