Draws on Credit Facility that are Designated as Net Investments in International Operations (Detail) In Millions, unless otherwise specified					12 Months Ended		12 Months Ended
	Dec. 31, 2012 Canadian Dollars USD ($)		Dec. 31, 2012 Canadian Dollars CAD		Dec. 31, 2012 Australian Dollars USD ($)	Dec. 31, 2012 Australian Dollars AUD	Dec. 31, 2012 Euros USD ($)	Dec. 31, 2012 Euros EUR (€)
Derivative [Line Items]
Balance Outstanding	$ 22	[1]	22	[1]	$ 7	7	$ 29	€ 22
Gain(Loss)					$ 0.2		$ (2.0)

[1] We have drawn an additional $86 million on the credit facility in Canadian dollars that has not been designated as a hedging instrument.