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Equity Method and Other Investments - Additional Information (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Equity Method Investment income from equity method investments      
Equity investment income (loss) from equity method investments in nonconsolidated dialysis partnerships. $ 26,520 $ 26,937 $ 26,916
Equity method investment, significant impairments and other valuation adjustments   0 0
Other (loss) income      
Equity Method Investment income from equity method investments      
Equity investment income (loss) from other equity method investments (4,703) (1,292) 0
Equity method investment, significant impairments and other valuation adjustments $ 20,154    
Company and Restricted Subsidiaries(1)      
Equity Method Investment income from equity method investments      
Ownership percentage by the Company 75.00%    
APAC joint venture      
Equity Method Investment income from equity method investments      
Current economic interest in the APAC JV, Owned by Other Noncontrolling Investors 25.00%    
Minimum | Company and Restricted Subsidiaries(1)      
Equity Method Investment income from equity method investments      
Ownership percentage by the Company 30.00%    
Maximum | Company and Restricted Subsidiaries(1)      
Equity Method Investment income from equity method investments      
Ownership percentage by the Company 65.00%    
Equity Method Investments In Nonconsolidated Dialysis Partnerships      
Equity Method Investment income from equity method investments      
Equity investment income (loss) from equity method investments in nonconsolidated dialysis partnerships. $ 26,520 $ 26,937 $ 26,916
Number of equity method investments 23