Derivative Instruments and Hedging Activities (Details 3) In Thousands, unless otherwise specified			3 Months Ended				3 Months Ended
	Mar. 31, 2014 6 3/4% Notes	Dec. 31, 2013 6 3/4% Notes	Mar. 31, 2014 Designated Hedging Instruments 6 3/4% Notes Net investment USD ($)	Mar. 31, 2013 Designated Hedging Instruments 6 3/4% Notes Net investment USD ($)	Mar. 31, 2014 Designated Hedging Instruments 6 3/4% Notes Net investment EUR (€)	Mar. 31, 2013 Designated Hedging Instruments 6 3/4% Notes Net investment EUR (€)	Mar. 31, 2014 Derivatives Not Designated as Hedging Instruments USD ($)	Mar. 31, 2013 Derivatives Not Designated as Hedging Instruments USD ($)	Mar. 31, 2014 Derivatives Not Designated as Hedging Instruments Foreign exchange contracts Other (income) expense, net USD ($)	Mar. 31, 2013 Derivatives Not Designated as Hedging Instruments Foreign exchange contracts Other (income) expense, net USD ($)
Gains and losses on derivative instruments
Total (gain) loss recognized in income on derivatives							$ 2,922	$ (11,150)	$ 2,922	$ (11,150)
Net investment hedge
Stated interest rate (as a percent)	6.75%	6.75%
Average notional amount of derivatives					64,208	105,667
Foreign exchange gains (losses)			145	4,123
Foreign exchange gains (losses), net of tax			88	2,513
Cumulative net investment hedge gains (losses) recorded in accumulated other comprehensive items, net			$ 7,572