Foreign Currency Losses (Details) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2011 USD ($)	Dec. 31, 2010 USD ($)	Jan. 11, 2010	Jan. 10, 2010	Jun. 30, 2011 Venezuelan Subsidiary [Member] VEF
Rate of inflation	100.00%
Inflation period (in years)	3
Bolivar Fuerte devalued percentage	50.00%
Foreign currency exchange rate			4.30	2.15
Foreign exchange loss	$ (20)
Assets	$ 2,642.9	$ 3,020.9			19.0