Segment Information (Details 1) - Geographic Areas (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013 segments	Dec. 31, 2012	Dec. 31, 2011
Segment Reporting [Abstract]
Number of reportable segments									1
Total net revenue by geographic region
Total net revenue	$ 408,103	$ 388,636	$ 375,847	$ 362,200	$ 352,909	$ 335,985	$ 318,990	$ 301,355	$ 1,534,786	$ 1,309,239	$ 1,025,064
Property and equipment, net by geographic region
Total property and equipment, net	890,776				724,985				890,776	724,985
United States
Property and equipment, net by geographic region
Total property and equipment, net	654,507				534,275				654,507	534,275
International
Property and equipment, net by geographic region
Total property and equipment, net	236,269				190,710				236,269	190,710
Operating location that enters into contractual relationship with customer | United States
Total net revenue by geographic region
Total net revenue									1,133,645	973,733	767,752
Operating location that enters into contractual relationship with customer | International
Total net revenue by geographic region
Total net revenue									401,141	335,506	257,312
Customer's billing address | United States
Total net revenue by geographic region
Total net revenue									1,076,248
Customer's billing address | International
Total net revenue by geographic region
Total net revenue									$ 458,538