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ORGANIZATION AND BASIS OF PRESENTATION (Details) shares in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2026 USD ($)	Jun. 30, 2026 USD ($)	Sep. 30, 2025 USD ($)	Sep. 30, 2026 USD ($) center shares	Sep. 30, 2025 USD ($) shares	Mar. 09, 2026 USD ($)	Jun. 30, 2025 USD ($)
Reclassification [Line Items]
Number of childcare and early education centers operated \| center				979
Impairment losses	$ 290,000,000	$ 6,300,000	$ 0	$ 296,275,000	$ 0
Borrowings under revolving credit facility				(488,463,000)	(469,602,000)
Payments under revolving credit facility				(442,457,000)	$ (320,000)
Stock repurchase program, authorized amount (up to)						$ 600,000,000	$ 500,000,000
Stock repurchase program, remaining authorized repurchase amount	244,300,000			$ 244,300,000		$ 127,600,000
Treasury stock repurchased (in shares) \| shares				7.7	0.9
Treasury stock acquired, net of taxes				$ 557,700,000	$ 106,000,000.0
Excise tax liability				5,400,000	700,000
Full service center-based child care
Reclassification [Line Items]
Impairment losses	$ 290,000,000.0			$ 296,300,000
Revision of Prior Period, Adjustment
Reclassification [Line Items]
Borrowings under revolving credit facility					67,500,000
Payments under revolving credit facility					$ 67,500,000