Long-Lived Assets (Details Textual) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Finite Lived Intangible Assets [Line Items]
Total amortization expense	$ 7.7	$ 8.4	$ 15.7	$ 17.5
Estimated total amortization expense 2014	30.4		30.4
Estimated total amortization expense 2015	22.3		22.3
Estimated total amortization expense 2016	16.1		16.1
Estimated total amortization expense 2017	12.5		12.5
Estimated total amortization expense 2018	$ 9.3		$ 9.3