Goodwill and Intangible Assets - Intangible categories (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 03, 2021	Mar. 28, 2020	Dec. 31, 2020
Finite And Indefinite Lived Assets By Major Class [Line Items]
Indefinite-lived intangibles:	$ 7.0		$ 7.0
Gross	3,785.7		3,883.0
Accumulated Amortization	1,419.4		1,401.5
Total other intangible assets	3,792.7		3,890.0
Intangible assets amortization expense	53.2	$ 52.6
Distribution and license agreements and supply agreements
Finite And Indefinite Lived Assets By Major Class [Line Items]
Gross	73.2		74.8
Accumulated Amortization	55.1		55.4
Developed product technology, formulations, and product rights
Finite And Indefinite Lived Assets By Major Class [Line Items]
Gross	301.8		303.3
Accumulated Amortization	180.5		177.3
Customer relationships and distribution networks
Finite And Indefinite Lived Assets By Major Class [Line Items]
Gross	1,873.9		1,920.5
Accumulated Amortization	830.9		823.7
Trademarks, trade names, and brands
Finite And Indefinite Lived Assets By Major Class [Line Items]
Gross	1,534.4		1,581.5
Accumulated Amortization	350.5		342.2
Non-compete agreements
Finite And Indefinite Lived Assets By Major Class [Line Items]
Gross	2.4		2.9
Accumulated Amortization	2.4		2.9
Trademarks, trade names, and brands
Finite And Indefinite Lived Assets By Major Class [Line Items]
Indefinite-lived intangibles:	4.3		4.3
In-process research and development
Finite And Indefinite Lived Assets By Major Class [Line Items]
Indefinite-lived intangibles:	$ 2.7		$ 2.7