Assets Held for Sale (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended	12 Months Ended
	Apr. 01, 2017	Dec. 31, 2015	Dec. 31, 2016
CHCA
Less: impairment reserves			$ (6.2)
Other
Less: impairment reserves			(6.3)
Discontinued operations, held-for-sale | CHCA
Current assets	$ 0.0		0.0
Goodwill	0.0		0.0
Property, plant and equipment	2.7		13.5
Other assets	0.0		0.0
Less: impairment reserves	0.0		(3.7)
Total assets held for sale	2.7		9.8
Current liabilities	0.1		0.1
Other liabilities	0.0		0.0
Total liabilities held for sale	0.1		0.1
Discontinued operations, held-for-sale | Other
Current assets	4.2		5.1
Goodwill	5.5		5.5
Property, plant and equipment	33.0		33.2
Other assets	3.2		3.8
Less: impairment reserves	(34.5)	$ (29.0)	(35.3)
Total assets held for sale	11.4		12.3
Current liabilities	1.0		1.9
Other liabilities	2.0		1.9
Total liabilities held for sale	$ 3.0		$ 3.8