Goodwill and Intangible Assets - Intangible categories (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 28, 2020	Mar. 30, 2019	Dec. 31, 2019
Finite And Indefinite Lived Assets By Major Class [Line Items]
Indefinite-lived intangibles:	$ 56.2		$ 68.8
Gross	4,696.7		4,685.1
Accumulated Amortization	1,819.0		1,763.9
Total other intangible assets	4,752.9		4,753.9
Intangible assets amortization expense	73.1	$ 75.4
Distribution and license agreements and supply agreements
Finite And Indefinite Lived Assets By Major Class [Line Items]
Gross	133.5		126.7
Accumulated Amortization	82.6		81.1
Developed product technology, formulations, and product rights
Finite And Indefinite Lived Assets By Major Class [Line Items]
Gross	1,393.5		1,392.8
Accumulated Amortization	770.2		755.3
Customer relationships and distribution networks
Finite And Indefinite Lived Assets By Major Class [Line Items]
Gross	1,792.6		1,805.6
Accumulated Amortization	694.5		671.4
Trade name and trademark
Finite And Indefinite Lived Assets By Major Class [Line Items]
Gross	1,370.7		1,353.5
Accumulated Amortization	265.7		250.1
Non-compete agreements
Finite And Indefinite Lived Assets By Major Class [Line Items]
Gross	6.4		6.5
Accumulated Amortization	6.0		6.0
Trademarks, trade names, and brands
Finite And Indefinite Lived Assets By Major Class [Line Items]
Indefinite-lived intangibles:	17.6		18.8
In-process research and development
Finite And Indefinite Lived Assets By Major Class [Line Items]
Indefinite-lived intangibles:	$ 38.6		$ 50.0
Impairment of indefinite lived intangible assets		$ 4.1