Segment Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Oct. 01, 2016	Sep. 30, 2017	Oct. 01, 2016	Dec. 31, 2016
Segment Reporting Information [Line Items]
Total Assets	$ 11,842.6		$ 11,842.6		$ 13,870.1
Net sales	1,231.3	$ 1,261.6	3,663.1	$ 3,949.3
Operating Income (Loss)	162.4	(1,468.3)	439.6	(1,515.1)
Intangible Asset Amortization	88.5	89.7	261.3	263.9
CHCA
Segment Reporting Information [Line Items]
Total Assets	3,833.7		3,833.7		3,351.3
Net sales	598.8	611.2	1,786.4	1,880.2
Operating Income (Loss)	124.3	99.0	303.6	316.4
Intangible Asset Amortization	16.9	17.6	51.1	53.3
CHCI
Segment Reporting Information [Line Items]
Total Assets	5,114.2		5,114.2		4,795.2
Net sales	365.4	377.4	1,116.8	1,232.7
Operating Income (Loss)	4.6	(1,615.5)	8.7	(2,011.3)
Intangible Asset Amortization	50.2	44.4	143.4	130.6
RX
Segment Reporting Information [Line Items]
Total Assets	2,597.0		2,597.0		2,646.4
Net sales	250.6	251.9	708.4	776.9
Operating Income (Loss)	82.1	74.4	239.6	258.3
Intangible Asset Amortization	21.0	27.2	65.6	78.6
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	3.2	0.0	(1.9)
Intangible Asset Amortization	0.0	0.0	0.0	0.0
Other
Segment Reporting Information [Line Items]
Total Assets	297.7		297.7		$ 301.4
Net sales	16.5	21.1	51.5	59.5
Operating Income (Loss)	(0.4)	(1.5)	9.4	2.6
Intangible Asset Amortization	0.4	0.5	1.2	1.4
Unallocated
Segment Reporting Information [Line Items]
Net sales	0.0	0.0	0.0	0.0
Operating Income (Loss)	(48.2)	(27.9)	(121.7)	(79.2)
Intangible Asset Amortization	$ 0.0	$ 0.0	$ 0.0	$ 0.0