| Document And Entity Information | Nov. 20, 2024 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Nov. 20, 2024 |
| Entity Registrant Name | KinderCare Learning Companies, Inc. |
| Entity Central Index Key | 0001873529 |
| Entity Emerging Growth Company | false |
| Entity File Number | 001-42367 |
| Entity Incorporation, State or Country Code | DE |
| Entity Tax Identification Number | 87-1653366 |
| Entity Address, Address Line One | 5005 Meadows Road |
| Entity Address, City or Town | Lake Oswego |
| Entity Address, State or Province | OR |
| Entity Address, Postal Zip Code | 97035 |
| City Area Code | (503) |
| Local Phone Number | 872-1300 |
| Entity Information, Former Legal or Registered Name | Not applicable |
| 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 | KLC |
| Security Exchange Name | NYSE |
