Summary of Significant Accounting Policies - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Disaggregation of Revenue [Line Items]
Other revenue	$ 106,581	$ 93,061	$ 99,533
Other revenue, percentage of revenue	0.018	0.017	0.020
Revenue	$ 5,966,072	$ 5,409,483	$ 5,129,687
Percentage of revenue	1.000	1.000	1.000
Third-Party Payor | Product Concentration Risk | Revenue Benchmark
Disaggregation of Revenue [Line Items]
Net patient service revenue	$ 5,859,491	$ 5,316,422	$ 5,030,154
Third party payers, percentage of revenue	98.20%	98.30%	98.00%
Medicare | Third-Party Payor | Product Concentration Risk | Revenue Benchmark
Disaggregation of Revenue [Line Items]
Net patient service revenue	$ 2,334,071	$ 2,136,695	$ 2,083,931
Third party payers, percentage of revenue	39.20%	39.50%	40.60%
Medicaid | Third-Party Payor | Product Concentration Risk | Revenue Benchmark
Disaggregation of Revenue [Line Items]
Net patient service revenue	$ 612,889	$ 606,770	$ 589,445
Third party payers, percentage of revenue	10.30%	11.20%	11.50%
Other managed care | Third-Party Payor | Product Concentration Risk | Revenue Benchmark
Disaggregation of Revenue [Line Items]
Net patient service revenue	$ 2,599,858	$ 2,304,718	$ 2,136,281
Third party payers, percentage of revenue	43.50%	42.60%	41.60%
Self-pay and other | Third-Party Payor | Product Concentration Risk | Revenue Benchmark
Disaggregation of Revenue [Line Items]
Net patient service revenue	$ 312,673	$ 268,239	$ 220,497
Third party payers, percentage of revenue	5.20%	5.00%	4.30%