Intangible Assets, Net (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Intangible Assets, Net [Abstract]
Intangible assets, useful life	15 years
Amortization expense	$ 266.6	$ 188.7	$ 133.1