REVENUE RECOGNITION - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Disaggregation of Revenue [Line Items]
Revenue	$ 802,812	$ 719,099	$ 2,199,909	$ 2,011,867
North America
Disaggregation of Revenue [Line Items]
Revenue	577,784	521,576	1,572,053	1,450,271
Outside North America
Disaggregation of Revenue [Line Items]
Revenue	225,028	197,523	627,856	561,596
Full service center-based child care \| Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	515,507	486,567	1,566,321	1,477,284
Full service center-based child care \| North America \| Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	315,171	308,166	988,228	958,879
Full service center-based child care \| Outside North America \| Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	200,336	178,401	578,093	518,405
Back-up care \| Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	253,372	201,783	544,654	452,945
Back-up care \| North America \| Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	228,680	182,661	494,891	409,754
Back-up care \| Outside North America \| Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	24,692	19,122	49,763	43,191
Educational advisory services \| Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	33,933	30,749	88,934	81,638
Educational advisory services \| North America \| Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	33,933	30,749	88,934	81,638
Educational advisory services \| Outside North America \| Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	$ 0	$ 0	$ 0	$ 0

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.

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+ Details

- 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.

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+ Details

BRIGHT HORIZONS FAMILY SOLUTIONS INC. 10-Q