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Investments - Company's Combined Proportionate Share of Major Components of Financial Statements (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Equity Method Investments and Joint Ventures [Abstract]    
Current assets $ 2,478 $ 905
Non-current assets 4,450 756
Current liabilities 2,329 806
Long-term liabilities 1,268 335
Sales 5,009 3,168
Cost of goods sold, expenses and income taxes 4,668 2,886
Net income $ 341 $ 282