Changes in Accumulated Other Comprehensive Loss Company's Accumulated Other Comprehensive Loss (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	$ (41.1)
Other comprehensive income (loss) prior to reclassifications	17.2
Amounts reclassified from accumulated other comprehensive loss	(23.5)
Net current period other comprehensive loss	(6.3)	5.6	12.4
Ending Balance	(47.4)	(41.1)
Accumulated Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	(42.2)
Other comprehensive income (loss) prior to reclassifications	17.2
Amounts reclassified from accumulated other comprehensive loss	(21.0)
Net current period other comprehensive loss	(3.8)
Ending Balance	(46.0)
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	(0.1)
Other comprehensive income (loss) prior to reclassifications	0.1
Amounts reclassified from accumulated other comprehensive loss	0
Net current period other comprehensive loss	0.1
Ending Balance	0
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	0.8
Other comprehensive income (loss) prior to reclassifications	(0.1)
Amounts reclassified from accumulated other comprehensive loss	(2.5)
Net current period other comprehensive loss	(2.6)
Ending Balance	(1.8)
Accumulated Net Unrealized Investment Gain (Loss) [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	0.4
Other comprehensive income (loss) prior to reclassifications	0
Amounts reclassified from accumulated other comprehensive loss	0
Net current period other comprehensive loss	0
Ending Balance	$ 0.4