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Basis Of Presentation And Summary Of Significant Accounting Policies - Summary of Accounts Receivable Factoring and Securitization Facilities (Detail) - USD ($)
$ in Millions
Jun. 30, 2016
Dec. 31, 2015
Accounting Policies [Abstract]    
Gross accounts receivable factored $ 566 $ 408
Gross accounts receivable factored, qualifying as sales 556 401
Undrawn cash on factored accounts receivable $ 1 $ 1