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Summary of Significant Accounting Policies - Accounts Receivable (Details) - Payor Source - Accounts Receivable	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Concentration Risk [Line Items]
Net operating revenues by payor source (percent)	100.00%	100.00%
Medicare | Third-Party Payor
Concentration Risk [Line Items]
Net operating revenues by payor source (percent)	57.90%	57.80%
Managed care and other discount plans, including Medicare Advantage | Third-Party Payor
Concentration Risk [Line Items]
Net operating revenues by payor source (percent)	31.10%	31.40%
Medicaid | Third-Party Payor
Concentration Risk [Line Items]
Net operating revenues by payor source (percent)	4.40%	4.10%
Other third-party payors | Third-Party Payor
Concentration Risk [Line Items]
Net operating revenues by payor source (percent)	3.40%	3.30%
Workers’ compensation | Third-Party Payor
Concentration Risk [Line Items]
Net operating revenues by payor source (percent)	2.20%	1.90%
Patients | Self-Pay
Concentration Risk [Line Items]
Net operating revenues by payor source (percent)	1.00%	1.50%

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