Property And Equipment (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Property Plant And Equipment [Abstract]
Lease Obligation Period			5 years
Amortization of assets held under capital leases	$ 9.5	$ 8.0	$ 26.8	$ 22.9