| Document and Entity Information | Feb. 18, 2021 |
| Cover [Abstract] | |
| Amendment Flag | false |
| Entity Central Index Key | 0001727263 |
| Document Type | 8-K |
| Document Period End Date | Feb. 18, 2021 |
| Entity Registrant Name | frontdoor, inc. |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-38617 |
| Entity Tax Identification Number | 82-3871179 |
| Entity Address, Address Line One | 150 Peabody Place |
| Entity Address, City or Town | Memphis |
| Entity Address, State or Province | TN |
| Entity Address, Postal Zip Code | 38103 |
| City Area Code | (901) |
| Local Phone Number | 701-5000 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Security 12b Title | Common stock, par value $0.01 per share |
| Trading Symbol | FTDR |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
