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Draws on Credit Facility that are Designated as Net Investments in Foreign Operations (Detail)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended 3 Months Ended 9 Months Ended 3 Months Ended 9 Months Ended
Sep. 30, 2014
USD ($)
Sep. 30, 2013
USD ($)
Sep. 30, 2014
USD ($)
Sep. 30, 2013
USD ($)
Dec. 31, 2013
USD ($)
Sep. 30, 2014
Canadian Dollars
USD ($)
Sep. 30, 2013
Canadian Dollars
USD ($)
Sep. 30, 2014
Canadian Dollars
USD ($)
Sep. 30, 2013
Canadian Dollars
USD ($)
Sep. 30, 2014
Canadian Dollars
CAD
Sep. 30, 2014
Euros
USD ($)
Sep. 30, 2013
Euros
USD ($)
Sep. 30, 2014
Euros
USD ($)
Sep. 30, 2013
Euros
USD ($)
Sep. 30, 2014
Euros
EUR (€)
Debt Instrument Designated As Hedges Of Net Investment In Foreign Operations [Line Items]                              
Balance Outstanding $ 712 $ 946 $ 712 $ 946 $ 946 $ 28 [1]   $ 28 [1]   31 [1] $ 97   $ 97   € 77
Foreign currency translation and other comprehensive income (loss) of unconsolidated affiliates $ (47) $ 17 $ (36) $ (12)   $ 1 [1] $ (1) [1] $ 1 [1] $ 1 [1]   $ 8 $ (3) $ 9 $ (3)  
[1] We have an additional $67 million outstanding on the credit facility in Canadian dollars, which draw has not been designated as a hedging instrument.