Segment Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 01, 2017	Jul. 02, 2016	Jul. 01, 2017	Jul. 02, 2016	Dec. 31, 2016
Segment Reporting Information [Line Items]
Total Assets	$ 11,792.2		$ 11,792.2		$ 13,870.1
Net sales	1,237.9	$ 1,340.5	2,431.9	$ 2,687.8
Operating Income (Loss)	148.8	184.8	277.3	(46.8)
Intangible Asset Amortization	87.2	88.9	172.8	174.1
CHCA
Segment Reporting Information [Line Items]
Total Assets	3,907.1		3,907.1		3,351.3
Net sales	604.9	629.9	1,187.6	1,269.0
Operating Income (Loss)	104.2	116.8	179.2	217.4
Intangible Asset Amortization	17.0	17.6	34.2	35.7
CHCI
Segment Reporting Information [Line Items]
Total Assets	5,012.1		5,012.1		4,795.2
Net sales	376.5	415.9	751.5	855.3
Operating Income (Loss)	3.9	0.6	4.2	(395.8)
Intangible Asset Amortization	47.5	44.9	93.2	86.1
RX
Segment Reporting Information [Line Items]
Total Assets	2,560.8		2,560.8		2,646.4
Net sales	240.4	276.9	457.8	525.0
Operating Income (Loss)	69.3	92.6	157.5	184.0
Intangible Asset Amortization	22.3	25.9	44.6	51.4
Specialty Sciences
Segment Reporting Information [Line Items]
Total Assets	0.0		0.0		2,775.8
Net sales	0.0	0.0	0.0	0.0
Operating Income (Loss)	0.0	(3.8)	0.0	(5.2)
Intangible Asset Amortization	0.0	0.0	0.0	0.0
Other
Segment Reporting Information [Line Items]
Total Assets	312.2		312.2		$ 301.4
Net sales	16.1	17.8	35.0	38.5
Operating Income (Loss)	4.1	(1.3)	9.7	4.2
Intangible Asset Amortization	0.4	0.5	0.8	0.9
Unallocated
Segment Reporting Information [Line Items]
Net sales	0.0	0.0	0.0	0.0
Operating Income (Loss)	(32.7)	(20.1)	(73.3)	(51.4)
Intangible Asset Amortization	$ 0.0	$ 0.0	$ 0.0	$ 0.0