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Business Combinations - Net Cash Paid for Acquisition (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Business Acquisition [Line Items]
Goodwill	$ 18.1	$ 26.2	$ 8.8
Hospital Sisters Health System, Covenant Health And Piedmont Healthcare, Inc
Business Acquisition [Line Items]
Fair value of assets acquired	13.0
Goodwill	18.1
Fair value of noncontrolling interest owned by joint venture partner	(31.1)
Net cash paid for acquisitions	$ 0.0
Altru Health System, Trinity Medical Center And NCH Healthcare System
Business Acquisition [Line Items]
Fair value of assets acquired		0.9
Goodwill		26.2
Fair value of noncontrolling interest owned by joint venture partner		(27.1)
Net cash paid for acquisitions		$ 0.0
Shannon Medical, Heritage Valley & ECHD Ventures
Business Acquisition [Line Items]
Fair value of assets acquired			1.4
Goodwill			8.8
Fair value of noncontrolling interest owned by joint venture partner			(9.1)
Net cash paid for acquisitions			$ 1.1

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