Segments and Related Information (Foreign Operations) (Narrative) (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Segments and Related Information [Line Items]
Revenue	$ 1,309,596,000	$ 1,269,385,000	$ 3,378,180,000	$ 3,165,657,000
Property and equipment, net	614,359,000		614,359,000		488,132,000
Intangible assets and goodwill, net	1,222,100,000		1,222,100,000		1,067,700,000
Reportable Geographical Components [Member] | United States [Member]
Segments and Related Information [Line Items]
Revenue	1,100,000,000	1,200,000,000	2,900,000,000	3,000,000,000
Property and equipment, net	497,600,000		497,600,000		436,900,000
Intangible assets and goodwill, net	1,000,000,000		1,000,000,000		1,000,000,000
Reportable Geographical Components [Member] | Foreign Operations [Member]
Segments and Related Information [Line Items]
Revenue	219,400,000	90,900,000	460,000,000	172,000,000
Property and equipment, net	116,800,000		116,800,000		51,200,000
Intangible assets and goodwill, net	$ 211,500,000		$ 211,500,000		$ 92,900,000