Intangible Assets, Goodwill and Other (Details) - USD ($) $ in Millions			3 Months Ended
	Aug. 31, 2019	Jan. 05, 2019	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Business Acquisition [Line Items]
Deferred payments and contingent consideration related to business combinations			$ 4.1	$ 64.7
Goodwill			335.0			$ 307.2
Amortization of intangible assets			12.3	$ 10.0
Chindex
Business Acquisition [Line Items]
Total purchase consideration		$ 66.0
Deferred payments and contingent consideration related to business combinations		64.7
Cash payments		1.3
Estimated total undiscounted contingent consideration		$ 81.0
Decrease in undiscounted expected contingent liability			(9.0)
Payment of contingent liability			19.3
Net additional expense			$ 1.4
Schölly
Business Acquisition [Line Items]
Total purchase consideration	$ 101.4
Cash payments	34.4
Deferred cash payments	67.0				$ 37.5
Net tangible assets acquired	10.7
Inventory	6.7
Cash	1.4
Intangible assets acquired	31.0
Goodwill	$ 59.7
Weighted average useful life	6 years 7 months 6 days
Schölly | Manufacturing process technology
Business Acquisition [Line Items]
Finite-lived Intangible Assets Acquired	$ 28.0
Schölly | Non-compete provisions
Business Acquisition [Line Items]
Finite-lived Intangible Assets Acquired	$ 3.0