CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY Statement - USD ($) shares in Millions, $ in Millions	Total	Common Stock	Common Stock Common Class A	Additional Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Retained Earnings	Treasury Stock At Cost	Total Stockholders' Equity of Scholastic Corporation	Noncontrolling Interest
Beginning balance at May. 31, 2020	$ 1,180.6	$ 0.4	$ 0.0	$ 622.4	$ (58.3)	$ 948.0	$ (333.3)	$ 1,179.2	$ 1.4
Balance (in shares) at Aug. 31, 2020		32.5	1.7
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(39.8)					(39.8)		(39.8)	0.0
Foreign currency translation adjustment	10.7				10.7			10.7
Pension and post-retirement adjustments (net of tax of $0.0)	0.1				0.1			0.1
Stock-based compensation	0.6			0.6				0.6
Treasury stock issued pursuant to equity-based plans (in shares)		0.0
Treasury stock issued pursuant to equity-based plans	0.3			(0.2)			0.5	0.3
Dividends	(5.1)					(5.1)		(5.1)
Ending Balance at Aug. 31, 2020	1,147.4	$ 0.4	$ 0.0	622.8	(47.5)	903.1	(332.8)	1,146.0	1.4
Balance (in shares) at May. 31, 2020		32.5	1.7
Beginning balance at May. 31, 2020	1,180.6	$ 0.4	$ 0.0	622.4	(58.3)	948.0	(333.3)	1,179.2	1.4
Balance (in shares) at Feb. 28, 2021		32.7	1.7
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(18.6)
Foreign currency translation adjustment	17.4
Ending Balance at Feb. 28, 2021	1,176.8	$ 0.4	$ 0.0	625.4	(35.4)	913.9	(328.9)	1,175.4	1.4
Balance (in shares) at May. 31, 2020		32.5	1.7
Beginning balance at Aug. 31, 2020	1,147.4	$ 0.4	$ 0.0	622.8	(47.5)	903.1	(332.8)	1,146.0	1.4
Balance (in shares) at Nov. 30, 2020		32.6	1.7
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	35.2					35.1		35.1	0.1
Foreign currency translation adjustment	0.4				0.4			0.4
Pension and post-retirement adjustments (net of tax of $0.0)	5.4				5.4			5.4
Stock-based compensation	3.0			3.0				3.0
Treasury stock issued pursuant to equity-based plans (in shares)		0.1
Treasury stock issued pursuant to equity-based plans	1.6			(1.5)			3.1	1.6
Dividends	(5.1)					(5.1)		(5.1)
Ending Balance at Nov. 30, 2020	1,187.9	$ 0.4	$ 0.0	624.3	(41.7)	933.1	(329.7)	1,186.4	1.5
Balance (in shares) at Aug. 31, 2020		32.5	1.7
Balance (in shares) at Feb. 28, 2021		32.7	1.7
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(14.0)					(13.9)		(13.9)	(0.1)
Foreign currency translation adjustment	6.3				6.3			6.3
Pension and post-retirement adjustments (net of tax of $0.0)	0.0				0.0			0.0
Stock-based compensation	1.5			1.5				1.5
Treasury stock issued pursuant to equity-based plans (in shares)		0.1
Treasury stock issued pursuant to equity-based plans	0.4			(0.4)			0.8	0.4
Dividends	(5.3)					(5.3)		(5.3)
Ending Balance at Feb. 28, 2021	1,176.8	$ 0.4	$ 0.0	625.4	(35.4)	913.9	(328.9)	1,175.4	1.4
Balance (in shares) at Nov. 30, 2020		32.6	1.7
Beginning balance at May. 31, 2021	1,182.3	$ 0.4	$ 0.0	626.5	(34.7)	916.4	(327.8)	1,180.8	1.5
Balance (in shares) at Aug. 31, 2021		32.8	1.7
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(24.4)					(24.2)		(24.2)	(0.2)
Foreign currency translation adjustment	(5.8)				(5.8)			(5.8)
Pension and post-retirement adjustments (net of tax of $0.0)	0.1				0.1			0.1
Stock-based compensation	1.5			1.5				1.5
Proceeds pursuant to stock-based compensation plans	0.5			0.5				0.5
Treasury stock issued pursuant to equity-based plans (in shares)		0.1
Treasury stock issued pursuant to equity-based plans	0.6			(0.9)			1.5	0.6
Dividends	(5.2)					(5.2)		(5.2)
Ending Balance at Aug. 31, 2021	1,149.6	$ 0.4	$ 0.0	627.6	(40.4)	887.0	(326.3)	1,148.3	1.3
Balance (in shares) at May. 31, 2021		32.7	1.7
Beginning balance at May. 31, 2021	1,182.3	$ 0.4	$ 0.0	626.5	(34.7)	916.4	(327.8)	1,180.8	1.5
Balance (in shares) at Feb. 28, 2022		32.8	1.7
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	28.9
Foreign currency translation adjustment	(8.6)
Purchases of treasury stock at cost	(19.6)
Ending Balance at Feb. 28, 2022	1,185.3	$ 0.4	$ 0.0	626.9	(42.7)	929.5	(330.3)	1,183.8	1.5
Balance (in shares) at May. 31, 2021		32.7	1.7
Beginning balance at Aug. 31, 2021	1,149.6	$ 0.4	$ 0.0	627.6	(40.4)	887.0	(326.3)	1,148.3	1.3
Balance (in shares) at Nov. 30, 2021		32.9	1.7
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	68.4					68.3		68.3	0.1
Foreign currency translation adjustment	(4.4)				(4.4)	0.0		(4.4)
Pension and post-retirement adjustments (net of tax of $0.0)	0.5				0.5			0.5
Stock-based compensation	3.0			3.0				3.0
Proceeds pursuant to stock-based compensation plans	2.1			2.1				2.1
Purchases of treasury stock at cost (in shares)		(0.1)
Purchases of treasury stock at cost	(4.2)						(4.2)	(4.2)
Treasury stock issued pursuant to equity-based plans (in shares)		0.2
Treasury stock issued pursuant to equity-based plans	0.4			(7.6)			8.0	0.4
Dividends	(5.2)					(5.2)		(5.2)
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders			$ (0.2)
Noncontrolling interest in Make Believe Ideas			(0.2)
Ending Balance at Nov. 30, 2021	1,210.0	$ 0.4	$ 0.0	625.1	(44.3)	950.1	(322.5)	1,208.8	1.2
Balance (in shares) at Aug. 31, 2021		32.8	1.7
Balance (in shares) at Feb. 28, 2022		32.8	1.7
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(15.1)					(15.3)		(15.3)	0.2
Foreign currency translation adjustment	1.6				1.6			1.6
Pension and post-retirement adjustments (net of tax of $0.0)	0.0				0.0			0.0
Stock-based compensation	1.6			1.6				1.6
Proceeds pursuant to stock-based compensation plans	7.3			7.3				7.3
Purchases of treasury stock at cost (in shares)		(0.4)
Purchases of treasury stock at cost	(15.4)						(15.4)	(15.4)
Treasury stock issued pursuant to equity-based plans (in shares)		0.3
Treasury stock issued pursuant to equity-based plans	0.5			(7.1)			7.6	0.5
Dividends	(5.3)					(5.3)		(5.3)
Noncontrolling interest in Make Believe Ideas			$ 0.1
Ending Balance at Feb. 28, 2022	$ 1,185.3	$ 0.4	$ 0.0	$ 626.9	$ (42.7)	$ 929.5	$ (330.3)	$ 1,183.8	$ 1.5
Balance (in shares) at Nov. 30, 2021		32.9	1.7