CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Feb. 28, 2021	Feb. 29, 2020	Feb. 28, 2021	Feb. 29, 2020
Income Statement [Abstract]
Revenues	$ 277.5	$ 373.3	$ 898.9	$ 1,203.1
Operating costs and expenses:
Cost of goods sold	146.0	183.0	468.5	584.4
Selling, general and administrative expenses	129.1	190.4	387.6	564.1
Depreciation and amortization	14.7	15.4	46.0	46.2
Severance	1.0	4.5	18.3	10.7
Total operating costs and expenses	301.7	433.3	931.3	1,245.4
Operating income (loss)	(24.2)	(60.0)	(32.4)	(42.3)
Interest income (expense), net	(1.7)	0.3	(4.1)	1.0
Other components of net periodic benefit (cost)	0.1	(0.4)	(0.1)	(1.0)
Gain (loss) on sale of assets and other	3.8	0.0	10.4	0.0
Earnings (loss) before income taxes	(22.0)	(60.1)	(26.2)	(42.3)
Provision (benefit) for income taxes	(8.0)	(16.8)	(7.6)	(11.6)
Net income (loss)	(14.0)	(43.3)	(18.6)	(30.7)
Less: Net income (loss) attributable to noncontrolling interest	(0.1)	0.0	0.0	0.1
Net income (loss) attributable to Scholastic Corporation	$ (13.9)	$ (43.3)	$ (18.6)	$ (30.8)
Basic and diluted earnings (loss) per share of Class A and Common Stock
Basic (in Dollars per share)	$ (0.41)	$ (1.25)	$ (0.54)	$ (0.89)
Diluted (in Dollars per share)	$ (0.41)	$ (1.25)	$ (0.54)	$ (0.89)