Segment Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 02, 2016	Jun. 27, 2015	Jul. 02, 2016		Jun. 27, 2015		Dec. 31, 2015
Segment Reporting Information [Line Items]
Net sales	$ 1,481.0	$ 1,531.6	$ 2,864.2	[1]	$ 2,580.8	[1]
Operating income (loss)	238.3	226.9	(65.5)	[1]	426.2	[1]
Amortization of intangibles	161.7	142.6	319.7	[1]	250.4	[1]
Total assets	19,533.6	19,393.9	19,533.6		19,393.9		$ 19,393.9
CHC [Member]
Segment Reporting Information [Line Items]
Net sales	686.3	746.4	1,386.6		1,431.3
Operating income (loss)	111.2	143.3	213.6		247.6
Amortization of intangibles	19.0	16.6	38.8		32.8
Total assets	4,021.9	4,007.8	4,021.9		4,007.8
BCH [Member]
Segment Reporting Information [Line Items]
Net sales	393.7	401.2	711.3	[1]	401.2	[1]
Operating income (loss)	38.4	26.6	(444.3)	[1]	26.6	[1]
Amortization of intangibles	39.5	34.2	74.9	[1]	34.2	[1]
Total assets	6,211.2	6,324.0	6,211.2		6,324.0
Rx [Member]
Segment Reporting Information [Line Items]
Net sales	293.3	278.3	550.0		529.9
Operating income (loss)	96.8	99.5	184.2		199.5
Amortization of intangibles	29.9	18.5	59.4		36.9
Total assets	3,340.1	3,015.5	3,340.1		3,015.5
Specialty Sciences [Member]
Segment Reporting Information [Line Items]
Net sales	89.9	83.6	177.9		165.5
Operating income (loss)	13.3	6.4	26.3		11.9
Amortization of intangibles	72.8	72.8	145.6		145.6
Total assets	5,758.4	5,833.5	5,758.4		5,833.5
Other [Member]
Segment Reporting Information [Line Items]
Net sales	17.8	22.1	38.4		52.9
Operating income (loss)	(1.3)	1.9	4.1		12.4
Amortization of intangibles	0.5	0.5	1.0		0.9
Total assets	202.0	213.1	202.0		213.1
Unallocated expenses
Segment Reporting Information [Line Items]
Net sales	0.0	0.0	0.0		0.0
Operating income (loss)	(20.1)	(50.8)	(49.4)		(71.8)
Amortization of intangibles	$ 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 six months ended June 27, 2015 includes only three months of results from operations attributable to Omega.