Equity Method and Other Investments - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Equity Method Investment income from equity method investments
Equity investment income (loss) from equity method investments in nonconsolidated dialysis partnerships.	$ 6,682	$ 6,820
Other Nonoperating Income (Expense)
Equity Method Investment income from equity method investments
Equity investment income (loss) from other equity method investments	(19,029)	(2,478)
Equity Method Investments In Nonconsolidated Dialysis Partnerships [Member]
Equity Method Investment income from equity method investments
Equity investment income (loss) from equity method investments in nonconsolidated dialysis partnerships.	$ 6,682	$ 6,820