Goodwill and Intangible Assets - Intangible categories (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 30, 2019	Mar. 31, 2018	Dec. 31, 2018
Finite And Indefinite Lived Assets By Major Class [Line Items]
Indefinite-lived intangibles:	$ 32.8		$ 49.3
Gross	4,346.4		4,379.3
Accumulated Amortization	1,588.5		1,520.4
Total other intangible assets	4,379.2		4,428.6
Intangible assets amortization expense	75.4	$ 87.2
Trademarks, trade names, and brands
Finite And Indefinite Lived Assets By Major Class [Line Items]
Indefinite-lived intangibles:	18.5		18.1
In-process research and development
Finite And Indefinite Lived Assets By Major Class [Line Items]
Indefinite-lived intangibles:	14.3		31.2
Impairment of indefinite lived intangible assets	4.1
Distribution and license agreements and supply agreements
Finite And Indefinite Lived Assets By Major Class [Line Items]
Gross	180.4		178.6
Accumulated Amortization	101.9		99.0
Developed product technology, formulations, and product rights
Finite And Indefinite Lived Assets By Major Class [Line Items]
Gross	1,333.1		1,318.8
Accumulated Amortization	686.0		654.6
Customer relationships and distribution networks
Finite And Indefinite Lived Assets By Major Class [Line Items]
Gross	1,562.5		1,586.6
Accumulated Amortization	587.6		566.5
Trademarks and Trade Names [Member]
Finite And Indefinite Lived Assets By Major Class [Line Items]
Gross	1,257.8		1,282.4
Accumulated Amortization	201.3		188.5
Non-compete agreements
Finite And Indefinite Lived Assets By Major Class [Line Items]
Gross	12.6		12.9
Accumulated Amortization	$ 11.7		$ 11.8