| Document and Entity Information Document | Apr. 18, 2021 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Document Period End Date | Apr. 18, 2021 |
| Entity Registrant Name | R1 RCM Inc. |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-34746 |
| Entity Tax Identification Number | 02-0698101 |
| Entity Address, Address Line One | 401 North Michigan Avenue |
| 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 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Title of 12(b) Security | Common stock, par value $0.01 per share |
| Trading Symbol | RCM |
| Security Exchange Name | NASDAQ |
| Entity Central Index Key | 0001472595 |
| Amendment Flag | false |
