Nature of Business and Basis of Presentation (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2019 USD ($) segment country server	Jan. 01, 2019 USD ($)	Dec. 31, 2018 USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Number of servers (more than) | server	200,000
Number of countries in which servers are located (more than) | country	130
Number of industry segments | segment	1
Operating lease right-of-use assets	$ 359,128
Reclassification into retained earnings	$ (208,994)		$ (430,890)
ASU 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease right-of-use assets		$ 362,200
Total lease liabilities		394,100
Deferred rent liabilities		31,700
Stranded Tax Effects Resulting from U.S. Tax Cuts and Jobs Act
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reclassification into retained earnings		$ 900