Summary of Significant Accounting Policies - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Disaggregation of Revenue [Line Items]
Other revenue	$ 17,794	$ 26,123
Other revenue, percentage of revenue	0.011	0.017
Total revenue	$ 1,601,870	$ 1,497,234
Percentage of revenue	1.000	1.000
Revenue Benchmark \| Product Concentration Risk \| Third-Party Payor
Disaggregation of Revenue [Line Items]
Net patient service revenue	$ 1,584,076	$ 1,471,111
Third party payers, percentage of revenue	98.90%	98.30%
Medicare \| Revenue Benchmark \| Product Concentration Risk \| Third-Party Payor
Disaggregation of Revenue [Line Items]
Net patient service revenue	$ 669,168	$ 595,637
Third party payers, percentage of revenue	41.80%	39.80%
Medicaid \| Revenue Benchmark \| Product Concentration Risk \| Third-Party Payor
Disaggregation of Revenue [Line Items]
Net patient service revenue	$ 158,861	$ 149,343
Third party payers, percentage of revenue	9.90%	10.00%
Other managed care \| Revenue Benchmark \| Product Concentration Risk \| Third-Party Payor
Disaggregation of Revenue [Line Items]
Net patient service revenue	$ 684,564	$ 645,152
Third party payers, percentage of revenue	42.70%	43.10%
Self-pay and other \| Revenue Benchmark \| Product Concentration Risk \| Third-Party Payor
Disaggregation of Revenue [Line Items]
Net patient service revenue	$ 71,483	$ 80,979
Third party payers, percentage of revenue	4.50%	5.40%