CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Feb. 29, 2020	Feb. 28, 2019	Feb. 29, 2020	Feb. 28, 2019
Income Statement [Abstract]
Revenues	$ 373.3	$ 360.1	$ 1,203.1	$ 1,183.2
Operating costs and expenses:
Cost of goods sold	183.0	176.9	584.4	564.6
Selling, general and administrative expenses	194.9	190.9	574.8	584.3
Depreciation and amortization	15.4	13.7	46.2	41.3
Asset impairments and write downs	40.0	0.0	40.0	0.0
Total operating costs and expenses	433.3	381.5	1,245.4	1,190.2
Operating income (loss)	(60.0)	(21.4)	(42.3)	(7.0)
Interest income (expense), net	0.3	1.0	1.0	2.3
Other components of net periodic benefit (cost)	(0.4)	(0.4)	(1.0)	(1.1)
Earnings (loss) before income taxes	(60.1)	(20.8)	(42.3)	(5.8)
Provision (benefit) for income taxes	(16.8)	(8.2)	(11.6)	(3.5)
Net income (loss)	(43.3)	(12.6)	(30.7)	(2.3)
Less: Net income attributable to noncontrolling interest	0.0	0.0	0.1	0.0
Net income (loss) attributable to Scholastic Corporation	$ (43.3)	$ (12.6)	$ (30.8)	$ (2.3)
Basic and diluted earnings (loss) per Share of Class A and Common Stock
Basic (in Dollars per share)	$ (1.25)	$ (0.36)	$ (0.89)	$ (0.07)
Diluted (in Dollars per share)	$ (1.25)	$ (0.36)	$ (0.89)	$ (0.07)