CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	3 Months Ended
	Aug. 31, 2022	Aug. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (45.4)	$ (24.4)
Other comprehensive income (loss), net:
Foreign currency translation adjustment	(9.6)	(5.8)
Pension and postretirement adjustments (net of tax)	0.0	0.1
Total other comprehensive income (loss), net	(9.6)	(5.7)
Comprehensive income (loss)	(55.0)	(30.1)
Less: Net income (loss) attributable to noncontrolling interest	0.1	(0.2)
Comprehensive income (loss) attributable to Scholastic Corporation	$ (55.1)	$ (29.9)