Information about Geographic Areas and Products - Geographic Disclosures (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Revenues by geography
Revenues	$ 471,703	$ 341,312	$ 888,486	$ 647,191
Percentage of U.S. revenues in North America	95.00%	95.00%	95.00%	95.00%
Property and equity by geography
Property and equipment, net	$ 213,501		$ 213,501		$ 181,620
Percentage of U.S. net property and equipment in North America	90.00%		90.00%		92.00%
North America
Revenues by geography
Revenues	$ 322,263	$ 234,009	$ 607,844	$ 444,526
Property and equity by geography
Property and equipment, net	150,604		150,604		$ 132,671
EMEA
Revenues by geography
Revenues	113,670	82,065	212,536	156,346
Property and equity by geography
Property and equipment, net	46,370		46,370		37,449
Asia Pacific and other
Revenues by geography
Revenues	35,770	$ 25,238	68,106	$ 46,319
Property and equity by geography
Property and equipment, net	$ 16,527		$ 16,527		$ 11,500