Revenue Recognition - Schedule of Total Revenue Between Education Centers and School Sites (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 28, 2024	Sep. 28, 2024	Jun. 29, 2024	Mar. 30, 2024	Dec. 30, 2023	Sep. 30, 2023	Jul. 01, 2023	Apr. 01, 2023	Dec. 28, 2024	Dec. 30, 2023	Dec. 31, 2022
Disaggregation of Revenue [Line Items]
Revenue	$ 646,956	$ 671,476	$ 689,933	$ 654,670	$ 617,996	$ 624,468	$ 655,099	$ 612,619	$ 2,663,035	$ 2,510,182	$ 2,165,813
Early Childhood Education Centers
Disaggregation of Revenue [Line Items]
Revenue									2,466,244	2,345,093	2,053,845
Before- and After-School Sites
Disaggregation of Revenue [Line Items]
Revenue									$ 196,791	$ 165,089	$ 111,968

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

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+ Details

KinderCare Learning Companies, Inc. 10-K