CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY Statement - USD ($) shares in Millions, $ in Millions	Total	Common Class B	Common Class B 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
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stockholders' Equity Attributable to Parent		$ 0.4	$ 0.0	$ 626.5	$ (34.7)	$ 916.4	$ (327.8)	$ 1,180.8
Noncontrolling interest									$ 1.5
Beginning balance at May. 31, 2021	$ 1,182.3
Balance (in shares) at Aug. 31, 2021		32.8	1.7
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(24.4)
Foreign currency translation adjustments	(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
Balance (in shares) at May. 31, 2021		32.7	1.7
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Less: Net income (loss) attributable to noncontrolling interest									(0.2)
Net Income (loss)						(24.2)		(24.2)
Beginning balance at May. 31, 2021	1,182.3
Balance (in shares) at Nov. 30, 2021		32.9	1.7
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	44.0
Foreign currency translation adjustments	(10.2)
Ending Balance at Nov. 30, 2021	1,210.0
Balance (in shares) at May. 31, 2021		32.7	1.7
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Less: Net income (loss) attributable to noncontrolling interest	(0.1)
Net Income (loss)	44.1
Stockholders' Equity Attributable to Parent		$ 0.4	$ 0.0	627.6	(40.4)	887.0	(326.3)	1,148.3
Noncontrolling interest									1.3
Beginning balance at Aug. 31, 2021	1,149.6
Balance (in shares) at Nov. 30, 2021		32.9	1.7
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	68.4
Foreign currency translation adjustments	(4.4)				(4.4)			(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	2.5			2.5				2.5
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	0.0			(8.0)			8.0	0.0
Dividends	(5.2)					(5.2)		(5.2)
Other (noncontrolling interest)			$ (0.2)
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders			$ (0.2)
Ending Balance at Nov. 30, 2021	1,210.0
Balance (in shares) at Aug. 31, 2021		32.8	1.7
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Less: Net income (loss) attributable to noncontrolling interest	0.1								0.1
Net Income (loss)	68.3					68.3		68.3
Stockholders' Equity Attributable to Parent	1,208.8	$ 0.4	$ 0.0	625.1	(44.3)	950.1	(322.5)	1,208.8
Noncontrolling interest	1.2								1.2
Stockholders' Equity Attributable to Parent	1,217.0	$ 0.4	$ 0.0	627.0	(45.4)	976.5	(341.5)	1,217.0
Noncontrolling interest	1.4								1.4
Beginning balance at May. 31, 2022	1,218.4
Balance (in shares) at Aug. 31, 2022		32.7	1.7
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(45.4)
Foreign currency translation adjustments	(9.6)				(9.6)			(9.6)
Pension and post-retirement adjustments (net of tax of $0.0)	0.0				0.0			0.0
Stock-based compensation	1.7			1.7				1.7
Proceeds pursuant to stock-based compensation plans	11.6			11.6				11.6
Purchases of treasury stock at cost (in shares)		(0.1)
Purchases of treasury stock at cost	(5.1)						(5.1)	(5.1)
Treasury stock issued pursuant to equity-based plans (in shares)		0.3
Treasury stock issued pursuant to equity-based plans	1.6			(10.8)			12.4	1.6
Dividends	(6.9)					(6.9)		(6.9)
Ending Balance at Aug. 31, 2022	1,166.3
Balance (in shares) at May. 31, 2022		32.5	1.7
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Less: Net income (loss) attributable to noncontrolling interest									0.1
Net Income (loss)						(45.5)		(45.5)
Beginning balance at May. 31, 2022	1,218.4
Balance (in shares) at Nov. 30, 2022		32.4	1.7
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	30.0
Foreign currency translation adjustments	(6.6)
Purchases of treasury stock at cost	(31.1)
Ending Balance at Nov. 30, 2022	1,218.1
Balance (in shares) at May. 31, 2022		32.5	1.7
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Less: Net income (loss) attributable to noncontrolling interest	0.2
Net Income (loss)	29.8
Stockholders' Equity Attributable to Parent		$ 0.4	$ 0.0	629.5	(55.0)	924.1	(334.2)	1,164.8
Noncontrolling interest									1.5
Beginning balance at Aug. 31, 2022	1,166.3
Balance (in shares) at Nov. 30, 2022		32.4	1.7
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	75.4
Foreign currency translation adjustments	3.0				3.0			3.0
Pension and post-retirement adjustments (net of tax of $0.0)	(0.1)				(0.1)			(0.1)
Stock-based compensation	4.2			4.2				4.2
Proceeds pursuant to stock-based compensation plans	1.5			1.5				1.5
Purchases of treasury stock at cost (in shares)		(0.6)
Purchases of treasury stock at cost	(26.0)						(26.0)	(26.0)
Treasury stock issued pursuant to equity-based plans (in shares)		0.3
Treasury stock issued pursuant to equity-based plans	0.8			(6.2)			7.0	0.8
Dividends	(7.0)					(7.0)		(7.0)
Ending Balance at Nov. 30, 2022	1,218.1
Balance (in shares) at Aug. 31, 2022		32.7	1.7
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Less: Net income (loss) attributable to noncontrolling interest	0.1								0.1
Net Income (loss)	75.3					75.3		75.3
Stockholders' Equity Attributable to Parent	1,216.5	$ 0.4	$ 0.0	$ 629.0	$ (52.1)	$ 992.4	$ (353.2)	$ 1,216.5
Noncontrolling interest	$ 1.6								$ 1.6