Assets Held for Sale (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2017	Dec. 31, 2016
Other
Less: impairment reserves	$ (3.3)		$ (35.3)
CHCA
Less: impairment reserves			(6.2)
Discontinued operations, held-for-sale | Other
Current assets	44.0	$ 44.0	5.1
Goodwill	32.6	32.6	5.5
Intangible assets	5.5	5.5	0.0
Property, plant and equipment	45.9	45.9	33.2
Other assets	3.1	3.1	3.8
Less: impairment reserves		(3.3)	(35.3)
Total assets held for sale	127.8	127.8	12.3
Current liabilities	7.6	7.6	1.9
Other liabilities	25.1	25.1	1.9
Total liabilities held for sale	$ 32.7	$ 32.7	3.8
Discontinued operations, held-for-sale | CHCA
Current assets			0.0
Goodwill			0.0
Intangible assets			0.0
Property, plant and equipment			13.5
Other assets			0.0
Less: impairment reserves			(3.7)
Total assets held for sale			9.8
Current liabilities			0.1
Other liabilities			0.0
Total liabilities held for sale			0.1
API [Member] | Other
Less: impairment reserves			(6.3)
Animal Health pet treats [Member] | CHCA
Less: impairment reserves			$ (3.7)