Litigation, Commitments and Contingencies (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended	147 Months Ended
	Dec. 31, 2011	Mar. 31, 2014	Dec. 31, 2013
ECJ Copyright Levy
Loss Contingencies [Line Items]
Copyright levy payment		$ 100
Copyright levy accrual reversal	7.8
Copyright levy liabilities		9.5	10.0
Other EU Jurisdictions [Member]
Loss Contingencies [Line Items]
Copyright levy liabilities		$ 9.5