Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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- Definition

Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future.

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Organization and Summary of Accounting Policies - Variable Interest Entities (Details) $ in Millions	Dec. 31, 2020 USD ($)	Dec. 31, 2020 surgical_facility	Dec. 31, 2020 physician_practice	Dec. 31, 2019 USD ($)
Variable Interest Entity [Line Items]
Number of facilities included in VIE		4	3
Assets	$ 5,413.2			$ 5,018.9
Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Assets	27.7			36.2
Liabilities	$ 21.1			$ 25.2