Restructuring, Strategic Transaction and Integration Strategic Transaction and Integration Expenses (Details) - USD ($) shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Restructuring and Related Activities [Abstract]
Strategic Transaction and Integration	$ 20.5	$ 72.2	$ 100.9
Supplychainrestructuringcosts		22.1
Cleanupcosts		$ 12.7
CommonSharesSoldbyPfizer			2,500
Payments for Other Fees			$ 8.0