Intangible Assets and Goodwill - Reconciliation of Goodwill Balance (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2020
Goodwill [Line Items]
Beginning balance		$ 654,635,000	$ 654,635,000
Impairment loss	$ 0	(119,500,000)	(119,500,000)
Ending balance	535,135,000		535,135,000
Healthcare
Goodwill [Line Items]
Beginning balance		334,680,000	334,680,000
Ending balance	334,680,000		334,680,000
Nutrition
Goodwill [Line Items]
Beginning balance		319,955,000	319,955,000
Impairment loss		$ (119,500,000)	(119,500,000)
Ending balance	$ 200,455,000		$ 200,455,000