Goodwill and Other Intangible Assets - Goodwill Impairment Narrative (Details) - USD ($)	3 Months Ended				6 Months Ended	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2016	Oct. 01, 2016	Apr. 02, 2016	Dec. 31, 2015	Dec. 31, 2017	Dec. 31, 2016	Jun. 27, 2015	Oct. 01, 2017
Goodwill [Line Items]
Goodwill impairment charge		$ 224,100,000	$ 737,900	$ 130,500,000	$ 0		$ 1,092,500,000
CHCI
Goodwill [Line Items]
Goodwill impairment charge				$ 130,500,000			868,400,000
CHCI | BCH
Goodwill [Line Items]
Reporting unit, percentage of fair value in excess of carrying amount (less than)									6.60%
CHCI | BCH | Goodwill
Goodwill [Line Items]
Discount rate increase						0.50%
Long-term grow rate decrease						0.50%
CHCI | BCH | Maximum
Goodwill [Line Items]
Reporting unit, percentage of fair value in excess of carrying amount (less than)						25.00%
CHCI | UK AUS
Goodwill [Line Items]
Reporting unit, percentage of fair value in excess of carrying amount (less than)									18.30%
CHCI | UK AUS | Maximum
Goodwill [Line Items]
Reporting unit, percentage of fair value in excess of carrying amount (less than)						25.00%
CHCI | BCH - ROW
Goodwill [Line Items]
Goodwill impairment charge			675,600,000
CHCI | BCH - Belgium
Goodwill [Line Items]
Goodwill impairment charge			$ 62,300,000
CHCA
Goodwill [Line Items]
Goodwill impairment charge							24,500,000	$ 6,800,000
CHCA | Animal health
Goodwill [Line Items]
Reporting unit, percentage of fair value in excess of carrying amount (less than)									23.60%
Percentage of fair value in excess of carrying amount, margin						8.90%
Goodwill impairment charge	$ 24,500,000
CHCA | Animal health | Maximum
Goodwill [Line Items]
Reporting unit, percentage of fair value in excess of carrying amount (less than)						25.00%
Specialty Sciences
Goodwill [Line Items]
Goodwill impairment charge	$ 199,600,000						$ 199,600,000