| Document and Entity Information | Jun. 21, 2022 |
| Cover [Abstract] | |
| Document Type | 8-K12B |
| Document Period End Date | Jun. 21, 2022 |
| Entity Registrant Name | R1 RCM Inc. /DE |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-34746 |
| Entity Tax Identification Number | 87-4340782 |
| Entity Address, Address Line One | 434 W. Ascension Way |
| Entity Address, Address Line Two | 6th Floor |
| Entity Address, City or Town | Murray |
| Entity Address, State or Province | UT |
| Entity Address, Postal Zip Code | 84123 |
| City Area Code | 312 |
| Local Phone Number | 324-7820 |
| Entity Information, Former Legal or Registered Name | Project Roadrunner Parent Inc. |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common stock, par value $0.01 per share |
| Trading Symbol | RCM |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
| Current Fiscal Year End Date | --12-30 |
| Entity Central Index Key | 0001910851 |
| Amendment Flag | false |
