Segment Information (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 29, 2018		Sep. 30, 2017	Sep. 29, 2018		Sep. 30, 2017	Dec. 31, 2017
Segment Reporting Information [Line Items]
Total Assets	$ 10,942.9			$ 10,942.9			$ 11,628.8
Net sales	1,133.1	[1]	$ 1,231.3	3,536.5	[1]	$ 3,663.1
Operating Income (Loss)	(122.0)		162.4	129.0		439.6
Intangible Asset Amortization	84.3		88.5	256.8		261.3
CHCA
Segment Reporting Information [Line Items]
Total Assets	3,420.6			3,420.6			3,786.8
Net sales	596.2		598.8	1,794.6		1,786.4
Operating Income (Loss)	(123.9)		124.3	46.6		303.6
Intangible Asset Amortization	15.3		16.9	45.8		51.1
CHCI
Segment Reporting Information [Line Items]
Total Assets	4,823.3			4,823.3			5,029.0
Net sales	357.6		365.4	1,140.0		1,116.8
Operating Income (Loss)	(2.0)		4.6	18.4		8.7
Intangible Asset Amortization	48.5		50.2	149.4		143.4
RX
Segment Reporting Information [Line Items]
Total Assets	2,699.0			2,699.0			$ 2,813.0
Net sales	179.3		250.6	601.9		708.4
Operating Income (Loss)	36.0		82.1	154.8		239.6
Intangible Asset Amortization	20.5		21.0	61.6		65.6
Other
Segment Reporting Information [Line Items]
Net sales	0.0		16.5	0.0		51.5
Operating Income (Loss)	0.0		(0.4)	0.0		9.4
Intangible Asset Amortization	0.0		0.4	0.0		1.2
Unallocated
Segment Reporting Information [Line Items]
Net sales	0.0		0.0	0.0		0.0
Operating Income (Loss)	(32.1)		(48.2)	(90.8)		(121.7)
Intangible Asset Amortization	$ 0.0		$ 0.0	$ 0.0		$ 0.0

[1] Derived from the location of the entity that sells to a third party.