Segment Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 01, 2016	Sep. 26, 2015	Oct. 01, 2016		Sep. 26, 2015		Dec. 31, 2015
Segment Reporting Information [Line Items]
Net sales	$ 1,354.9	$ 1,344.7	$ 4,219.1	[1]	$ 3,925.4	[1]
Operating Income (Loss)	(1,515.2)	188.6	(1,580.7)	[1]	614.7	[1]
Intangible Asset Amortization	162.1	147.6	481.8	[1]	397.9	[1]
Total Assets	17,467.6		17,467.6				$ 19,393.9
CHC
Segment Reporting Information [Line Items]
Net sales	669.1	675.2	2,055.6		2,106.4
Operating Income (Loss)	100.1	117.3	313.6		364.8
Intangible Asset Amortization	19.2	19.4	58.1		52.1
Total Assets	3,873.8		3,873.8				4,007.8
BCH
Segment Reporting Information [Line Items]
Net sales	304.0	302.2	1,015.3	[1]	703.4	[1]
Operating Income (Loss)	(1,684.3)	4.4	(2,128.7)	[1]	31.0	[1]
Intangible Asset Amortization	38.9	36.3	113.9	[1]	70.5	[1]
Total Assets	4,460.2		4,460.2				6,324.0
Rx
Segment Reporting Information [Line Items]
Net sales	267.4	260.3	817.4		790.1
Operating Income (Loss)	77.9	91.0	262.1		290.4
Intangible Asset Amortization	30.7	18.6	90.1		55.5
Total Assets	3,304.0		3,304.0				3,015.5
Specialty Sciences
Segment Reporting Information [Line Items]
Net sales	93.4	84.5	271.3		250.1
Operating Income (Loss)	23.3	9.0	49.7		21.0
Intangible Asset Amortization	72.8	72.8	218.3		218.4
Total Assets	5,634.0		5,634.0				5,833.5
Other
Segment Reporting Information [Line Items]
Net sales	21.0	22.5	59.5		75.4
Operating Income (Loss)	(1.6)	6.2	2.6		18.6
Intangible Asset Amortization	0.5	0.5	1.4		1.4
Total Assets	195.6		195.6				$ 213.1
Unallocated
Segment Reporting Information [Line Items]
Net sales	0.0	0.0	0.0		0.0
Operating Income (Loss)	(30.6)	(39.3)	(80.0)		(111.1)
Intangible Asset Amortization	$ 0.0	$ 0.0	$ 0.0		$ 0.0

[1] The BCH segment was created on March 30, 2015 as a result of the Omega acquisition, thus data for the nine months ended September 26, 2015 includes only six months of results from operations attributable to Omega.