Summary of Significant Accounting Policies - Intangible Asset Useful Lives (Details)	12 Months Ended
	Dec. 31, 2021
Certificates of need | Minimum
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset useful life	10 years
Certificates of need | Maximum
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset useful life	30 years
Licenses | Minimum
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset useful life	10 years
Licenses | Maximum
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset useful life	20 years
Noncompete agreements | Minimum
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset useful life	1 year
Noncompete agreements | Maximum
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset useful life	18 years
Trade names | Minimum
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset useful life	1 year
Trade names | Maximum
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset useful life	20 years
Internal-use software | Minimum
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset useful life	3 years
Internal-use software | Maximum
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset useful life	7 years
Market access assets
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset useful life	20 years