Recent Accounting Pronouncements (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Jan. 01, 2017	Dec. 31, 2016
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Excess tax benefit	$ 4,400
Net cash provided by operating activities	167,763	$ (45,767)
Decrease to financing activities	$ (53,194)	(38,650)
Accounting Standards Update 2016-09, Excess Tax Benefit Component
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net cash provided by operating activities		4,100
Decrease to financing activities		$ (4,100)
Accounting Standards Update 2016-16 | New Accounting Pronouncement, Early Adoption, Effect
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net long-term deferred tax asset			$ 479,700
Accounting Standards Update 2016-16 | New Accounting Pronouncement, Early Adoption, Effect | Prepaid Expenses and Other Current Assets
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Current deferred charge				$ (24,100)
Accounting Standards Update 2016-16 | New Accounting Pronouncement, Early Adoption, Effect | Other Assets
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Non-current deferred charge				$ (348,800)