Litigation, Commitments and Contingencies - Narrative (Details) (USD $) In Millions, unless otherwise specified		144 Months Ended		12 Months Ended	6 Months Ended	9 Months Ended	12 Months Ended		3 Months Ended
	Dec. 31, 2013	Dec. 31, 2013 ECJ Copyright Levy [Member]	Dec. 31, 2012 ECJ Copyright Levy [Member]	Dec. 31, 2011 Cost of Sales ECJ Copyright Levy [Member]	Dec. 31, 2013 Italy Copyright Levy [Member]	Sep. 30, 2013 Italy Copyright Levy [Member]	Dec. 31, 2013 Italy Copyright Levy [Member]	Jun. 30, 2013 Italy Copyright Levy [Member]	Dec. 31, 2013 France Copyright Levy [Member]	Dec. 31, 2013 Other EU Jurisdictions [Member]
Loss Contingencies [Line Items]
Environmental-related accruals	$ 0.2
Disputed amount of levy payments withheld									3.6
Copyright levies payment		100
Accrued copyright levies		10.0	27.7					13.6	9.5	9.4
Amount of Remaining Copyright Levy Overpaid Other than Copyright Levy Liabilities						25.4			45.6
Copyright levies accrual reversal				7.8	2.6
Amount of Copyright Levy Overpaid					$ 22.8	$ 39.0	$ 39.0		$ 55.1