Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Income Tax Disclosure [Abstract]
Benefit (provision) for income taxes	$ 23,020	$ (11)	$ 22,970	$ (57)
Effective income tax rate	5.50%	0.01%	4.40%	0.10%
Not discontinued operations, discontinuation and market withdrawal | MDCO-700
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income tax benefit, disposition	$ 23,000		$ 23,000