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Basis of Presentation and Organization	12 Months Ended
Basis of Presentation and Organization	Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation and Organization	Basis of Presentation and Organization Business American Renal Associates Holdings, Inc. (the “Company”) owns 100% of the membership units of its subsidiary American Renal Holdings Intermediate Company, LLC, which itself has no assets other than 100% of the shares of capital stock of American Renal Holdings Inc. All of the Company’s operating activities are conducted through American Renal Holdings Inc. and its operating subsidiaries (“ARH”). The Company is a national provider of kidney dialysis services for patients suffering from chronic kidney failure, also known as end stage renal disease (“ESRD”). As of December 31, 2019, the Company owned and operated 246 dialysis clinics treating 17,306 patients in 27 states and the District of Columbia. As of December 31, 2018, the Company owned and operated 241 dialysis clinics treating 16,543 patients in 27 states and the District of Columbia. The Company’s operating model is based on shared ownership of its facilities with physicians, known as nephrologists, who specialize in treating kidney‑related diseases in the local market served by the clinic. Substantially all clinics are maintained as a separate joint venture (“JV”) in which the Company has a controlling interest and its local nephrologist partners have noncontrolling interests.