Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2019	Oct. 29, 2019
Cover page.
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2019
Document Transition Report	false
Entity File Number	001-34746
Entity Registrant Name	R1 RCM INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	02-0698101
Entity Address, Address Line One	401 North Michigan Avenue
Entity Address, Address Line Two	Suite 2700
Entity Address, City or Town	Chicago
Entity Address, State or Province	IL
Entity Address, Postal Zip Code	60611
City Area Code	312
Local Phone Number	324-7820
Title of 12(b) Security	Common stock, par value $0.01 per share
Trading Symbol	RCM
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filter Category	Large Accelerated Filer
Smaller Reporting Company	false
Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding (in shares)		112,864,978
Amendment Flag	false
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q3
Entity Central Index Key	0001472595
Current Fiscal Year End Date	--12-31