Commitments and Contingencies (Narrative) (Details) (USD $)	12 Months Ended						0 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012		Sep. 17, 2012
Loss Contingencies [Line Items]
Operating Leases, Rent Expense, Sublease Rentals	$ 300,000		$ 300,000		$ 200,000
Rental expense	77,100,000		70,900,000		65,100,000
Total operating lease obligations remaining	401,180,000
Loss Contingency, Information about Litigation Matters [Abstract]
Purchase obligations anticipated for 2015	10,700,000
Contingent obligations to purchase inventory	16,400,000
Accrual for estimated damages and related interest	20,727,000	[1]	0	[1]	0	[1]
SSL Services
Loss Contingency, Information about Litigation Matters [Abstract]
Final damages awarded, confirmed by court							10,000,000
Enhanced damages awarded							5,000,000
Prejudgment interest on damages awarded							5,000,000
Accrual for estimated damages and related interest	$ 20,700,000

[1] Represents expenses presented to management on a consolidated basis only and not allocated to the operating segments.