Goodwill and Intangible Assets - Intangible categories (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 03, 2021	Jun. 27, 2020	Jul. 03, 2021	Jun. 27, 2020	Dec. 31, 2020
Finite And Indefinite Lived Assets By Major Class [Line Items]
Indefinite-lived intangibles:	$ 6.3		$ 6.3		$ 7.0
Gross	3,785.4		3,785.4		3,883.0
Accumulated Amortization	1,471.6		1,471.6		1,401.5
Total other intangible assets	3,791.7		3,791.7		3,890.0
Intangible assets amortization expense	53.4	$ 51.6	106.6	$ 104.2
Distribution and license agreements and supply agreements
Finite And Indefinite Lived Assets By Major Class [Line Items]
Gross	69.4		69.4		74.8
Accumulated Amortization	51.7		51.7		55.4
Developed product technology, formulations, and product rights
Finite And Indefinite Lived Assets By Major Class [Line Items]
Gross	302.0		302.0		303.3
Accumulated Amortization	184.5		184.5		177.3
Customer relationships and distribution networks
Finite And Indefinite Lived Assets By Major Class [Line Items]
Gross	1,877.9		1,877.9		1,920.5
Accumulated Amortization	863.7		863.7		823.7
Trademarks, trade names, and brands
Finite And Indefinite Lived Assets By Major Class [Line Items]
Gross	1,534.0		1,534.0		1,581.5
Accumulated Amortization	369.6		369.6		342.2
Non-compete agreements
Finite And Indefinite Lived Assets By Major Class [Line Items]
Gross	2.1		2.1		2.9
Accumulated Amortization	2.1		2.1		2.9
Trademarks, trade names, and brands
Finite And Indefinite Lived Assets By Major Class [Line Items]
Indefinite-lived intangibles:	3.6		3.6		4.3
In-process research and development
Finite And Indefinite Lived Assets By Major Class [Line Items]
Indefinite-lived intangibles:	$ 2.7		$ 2.7		$ 2.7