Segment Information (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 02, 2016	Mar. 28, 2015	Dec. 31, 2015
Segment Reporting Information [Line Items]
Net sales	$ 1,383.2	$ 1,049.1
Operating income (Loss)	(303.8)	199.2
Amortization of intangibles	158.0	107.8
Total assets	19,726.2	19,393.9	$ 19,393.9
CHC [Member]
Segment Reporting Information [Line Items]
Net sales	700.3	684.9
Operating income (Loss)	102.5	104.3
Amortization of intangibles	19.8	16.2
Total assets	4,026.5	4,007.8
BCH [Member]
Segment Reporting Information [Line Items]
Net sales	317.6	0.0
Operating income (Loss)	(482.7)	0.0
Amortization of intangibles	35.4	0.0
Total assets	6,238.2	6,324.0
Rx [Member]
Segment Reporting Information [Line Items]
Net sales	256.7	251.6
Operating income (Loss)	87.4	100.0
Amortization of intangibles	29.5	18.3
Total assets	3,384.5	3,015.5
Specialty Sciences [Member]
Segment Reporting Information [Line Items]
Net sales	88.0	81.9
Operating income (Loss)	12.9	5.5
Amortization of intangibles	72.8	72.8
Total assets	5,859.6	5,833.5
Other [Member]
Segment Reporting Information [Line Items]
Net sales	20.6	30.7
Operating income (Loss)	5.4	10.5
Amortization of intangibles	0.5	0.5
Total assets	217.4	213.1
Unallocated expenses
Segment Reporting Information [Line Items]
Net sales	0.0	0.0
Operating income (Loss)	(29.3)	(21.1)
Amortization of intangibles	0.0	0.0
Total assets	$ 0.0	$ 0.0