Derivatives and Hedging Activities (Details Textual) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended					6 Months Ended	12 Months Ended			3 Months Ended			6 Months Ended
	Dec. 31, 2011 InterestRateAndCurrencySwap ForeignExchangeOption	Jun. 30, 2012 InterestRateAndCurrencySwap ForeignExchangeOption	Jun. 30, 2012 12% Senior Notes due February 2014 [Member]	Dec. 31, 2011 12% Senior Notes due February 2014 [Member]	Jun. 30, 2012 5.625 % Senior Notes due July 2013 [Member]	Dec. 31, 2011 5.625 % Senior Notes due July 2013 [Member]	Jun. 30, 2012 Interest Rate Swap [Member]	Dec. 31, 2011 Interest Rate Swap [Member]	Jun. 30, 2012 Foreign Exchange Forward [Member]	Dec. 31, 2011 Foreign Exchange Forward [Member]	Jun. 30, 2012 Designated as Hedging Instrument [Member]	Dec. 31, 2011 Designated as Hedging Instrument [Member]	Jun. 30, 2011 Designated as Hedging Instrument [Member]	Jun. 30, 2012 Designated as Hedging Instrument [Member]	Jun. 30, 2011 Designated as Hedging Instrument [Member]
Derivatives And Hedging Activities (Textual) [Abstract]
Mark to market adjustment to record Increase or decrease in the carrying amount of the 12% and 5.625% Senior Notes							$ 2	$ 2
Increase (decrease) in interest expense due to interest rate swap											(0.2)	(1.0)	(1.0)	(0.5)	(2.0)
Increase (decrease) in carrying value due to interest rate swap												6
Estimated fair value of foreign currency forward contract, asset									55	15
Derivatives and Hedging Activities (Additional Textual) [Abstract]
Interest rate on senior notes			12.00%	12.00%	5.625%	5.625%
Terminated an interest rate swap with notional amount interest rate swaps	$ 7
Maximum original maturity period of Foreign Currency Forward Contracts		12 months
Number of foreign exchange options outstanding
Number of interest rate and Currency swap agreements outstanding