Segment Information (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2018		Jul. 01, 2017	Jun. 30, 2018		Jul. 01, 2017	Dec. 31, 2017
Segment Reporting Information [Line Items]
Total Assets	$ 11,225.6			$ 11,225.6			$ 11,628.8
Net sales	1,186.4	[1]	$ 1,237.9	2,403.4	[1]	$ 2,431.9
Operating Income (Loss)	94.7		148.8	250.9		277.3
Intangible Asset Amortization	85.3		87.2	172.4		172.8
CHCA
Segment Reporting Information [Line Items]
Total Assets	3,673.0			3,673.0			3,786.8
Net sales	596.8		604.9	1,198.4		1,187.6
Operating Income (Loss)	57.4		104.2	170.5		179.2
Intangible Asset Amortization	15.3		17.0	30.5		34.2
CHCI
Segment Reporting Information [Line Items]
Total Assets	4,799.4			4,799.4			5,029.0
Net sales	381.0		376.5	782.4		751.5
Operating Income (Loss)	5.6		3.9	20.4		4.2
Intangible Asset Amortization	49.5		47.5	100.8		93.2
RX
Segment Reporting Information [Line Items]
Total Assets	2,753.2			2,753.2			$ 2,813.0
Net sales	208.6		240.4	422.6		457.8
Operating Income (Loss)	56.9		69.3	118.7		157.5
Intangible Asset Amortization	20.5		22.3	41.1		44.6
Other
Segment Reporting Information [Line Items]
Net sales	0.0		16.1	0.0		35.0
Operating Income (Loss)	0.0		4.1	0.0		9.7
Intangible Asset Amortization	0.0		0.4	0.0		0.8
Unallocated
Segment Reporting Information [Line Items]
Net sales	0.0		0.0	0.0		0.0
Operating Income (Loss)	(25.2)		(32.7)	(58.7)		(73.3)
Intangible Asset Amortization	$ 0.0		$ 0.0	$ 0.0		$ 0.0

[1] The net sales by geography is derived from the location of the entity that sells to a third party.