v3.26.1
Segment reporting - Summary of Depreciation and Amortization Expense by Segment (Detail) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Segment Reporting Information [Line Items]    
Depreciation and amortization $ 177,829 $ 176,451
U. S. Dialysis And Related Lab Services    
Segment Reporting Information [Line Items]    
Depreciation and amortization 155,170 156,899
Other Operating Segment    
Segment Reporting Information [Line Items]    
Depreciation and amortization $ 22,659 $ 19,552