Quarterly Financial Information (unaudited) (Parenthetical) (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019		Dec. 31, 2018	[1]
Impairment loss			$ 377,100
Incremental amortization expense	$ 17,400
Effective tax rate	15.20%	10.10%
Impairment loss of goodwill	$ 137,100		137,100	[1]	$ 0
Tax benefits related to vesting of stock-based compensation awards		$ 4,600
Nutrition
Impairment loss	377,100
Impairment loss of goodwill	137,100		137,100	[1]
Selling, General and Administrative Expenses
Business acquisition, integration and project Costs	$ 5,800		$ 5,800
Project costs incurred in connection to potential and pending acquisitions		$ 3,300

[1] See Note 13 for explanation.