Summary of Significant Accounting Policies - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Disaggregation of Revenue [Line Items]
Other revenue	$ 26,123	$ 22,950
Other revenue, percentage of revenue	0.017	0.016
Revenue	$ 1,497,234	$ 1,439,046
Percentage of revenue	1.000	1.000
Third-Party Payor \| Product Concentration Risk \| Revenue Benchmark
Disaggregation of Revenue [Line Items]
Net patient service revenue	$ 1,471,111	$ 1,416,096
Third party payers, percentage of revenue	98.30%	98.40%
Medicare \| Third-Party Payor \| Product Concentration Risk \| Revenue Benchmark
Disaggregation of Revenue [Line Items]
Net patient service revenue	$ 595,637	$ 569,483
Third party payers, percentage of revenue	39.80%	39.60%
Medicaid \| Third-Party Payor \| Product Concentration Risk \| Revenue Benchmark
Disaggregation of Revenue [Line Items]
Net patient service revenue	$ 149,343	$ 156,278
Third party payers, percentage of revenue	10.00%	10.90%
Other managed care \| Third-Party Payor \| Product Concentration Risk \| Revenue Benchmark
Disaggregation of Revenue [Line Items]
Net patient service revenue	$ 645,152	$ 613,117
Third party payers, percentage of revenue	43.10%	42.60%
Self-pay and other \| Third-Party Payor \| Product Concentration Risk \| Revenue Benchmark
Disaggregation of Revenue [Line Items]
Net patient service revenue	$ 80,979	$ 77,218
Third party payers, percentage of revenue	5.40%	5.30%