Summary of Significant Accounting Policies (Details) $ in Millions	12 Months Ended
	Dec. 31, 2019 USD ($) reporting_unit	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Jan. 01, 2019 USD ($)
Summary of Significant Accounting Policies [Line Items]
Customer related acruals and allowances	$ 483.7	$ 534.8
Depreciation	91.0	90.0	$ 95.2
Property, Plant and Equipment, Gross [Abstract]
Land	50.4	49.0
Buildings	578.7	552.3
Machinery and equipment	1,195.8	1,079.3
Gross property, plant and equipment	1,824.9	1,680.6
Less accumulated depreciation	(922.1)	(851.5)
Property, plant and equipment, net	902.8	829.1	833.1
Operating lease assets	129.9	0.0		$ 166.5
Lease liabilities	$ 133.7			$ 164.0
Number of reporting units | reporting_unit	6
Research and development	$ 187.4	218.6	167.7
Advertising expense	142.8	159.2	$ 145.3
CSCA
Property, Plant and Equipment, Gross [Abstract]
Operating lease assets	22.4
Lease liabilities	22.8
CSCI
Property, Plant and Equipment, Gross [Abstract]
Operating lease assets	41.6
Lease liabilities	$ 42.4
Omega advertising percentage	90.00%
Minimum | Machinery and Equipment
Summary of Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life (in years)	3 years
Minimum | Building
Summary of Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life (in years)	10 years
Maximum | Machinery and Equipment
Summary of Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life (in years)	20 years
Maximum | Building
Summary of Significant Accounting Policies [Line Items]
Property, plant and equipment, useful life (in years)	45 years
Merck Sharp & Dohme License Agreement | CSCA
Property, Plant and Equipment, Gross [Abstract]
Research and development		$ 50.0
Foreign currency exchange contracts
Summary of Significant Accounting Policies [Line Items]
Maximum remaining maturity of foreign currency derivatives	18 months