v3.26.3
Segment reporting - Summary of Depreciation and Amortization Expense by Segment (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Segment Reporting [Line Items]        
Depreciation and amortization $ 165,188 $ 177,490 $ 510,825 $ 528,645
U. S. Dialysis And Related Lab Services        
Segment Reporting [Line Items]        
Depreciation and amortization 144,360 156,242 445,991 469,923
Other Operating Segment        
Segment Reporting [Line Items]        
Depreciation and amortization $ 20,828 $ 21,249 $ 64,834 $ 58,723