Summary of Significant Accounting Policies - Texas Waiver Program (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Disaggregation of Revenue [Line Items]
Revenue	$ 1,449,817	$ 1,377,727	$ 4,359,783	$ 4,063,449
Texas Waiver Program | Patient Services | Third-Party Payor
Disaggregation of Revenue [Line Items]
Revenue	54,000	68,600	165,900	147,300
Provider assessment costs	$ 15,100	$ 28,700	$ 56,800	$ 58,800