v3.26.1
Segment Information - Schedule of Segment Reporting Information (Details) - USD ($)
$ in Millions
 12 Months Ended
May 31, 2026
May 31, 2025
May 31, 2024
Segment Reporting Information [Line Items]      
Revenues $ 1,581.9 $ 1,625.5 $ 1,589.7
Cost of goods sold 689.8 718.8 705.1
Selling, general and administrative expenses 807.2 822.3 803.0
Depreciation and amortization 58.8 65.7 57.1
Other segment items 10.9 2.9 10.0
Operating income (loss) 15.2 15.8 14.5
Interest income (expense), net (11.2) (16.0) 2.7
Other components of net periodic benefit (cost) (1.3) (1.1) (1.0)
Loss on sale of investments (17.2) 0.0 0.0
Gain on sale and leaseback transactions 99.7 0.0 0.0
Earnings (loss) before income taxes 85.2 (1.3) 16.2
Segment assets 1,728.1 1,950.1 1,671.2
Long-lived asset additions 35.2 32.1 35.7
Income from equity method investments 0.3 0.5 0.5
Entertainment      
Segment Reporting Information [Line Items]      
Income from equity method investments 0.1 0.2  
International      
Segment Reporting Information [Line Items]      
Income from equity method investments 0.3 0.3 0.5
Operating Segments | Children's Book Publishing and Distribution      
Segment Reporting Information [Line Items]      
Revenues 964.2 963.9 953.3
Cost of goods sold 393.5 410.2 412.0
Selling, general and administrative expenses 404.1 399.7 393.2
Depreciation and amortization 22.3 22.7 24.3
Other segment items 1.4 0.6 0.5
Operating income (loss) 142.9 130.7 123.3
Segment assets 579.6 604.5 555.7
Long-lived asset additions 5.4 12.3 18.2
Operating Segments | Education      
Segment Reporting Information [Line Items]      
Revenues 267.6 309.8 351.2
Cost of goods sold 104.1 122.8 137.6
Selling, general and administrative expenses 151.8 169.5 179.0
Depreciation and amortization 11.5 10.6 12.7
Other segment items 4.3 0.6 6.1
Operating income (loss) (4.1) 6.3 15.8
Segment assets 234.1 245.8 242.0
Long-lived asset additions 0.1 0.9 0.0
Operating Segments | Entertainment      
Segment Reporting Information [Line Items]      
Revenues 65.7 61.0 1.9
Cost of goods sold 37.9 33.4 0.1
Selling, general and administrative expenses 26.2 27.6 12.7
Depreciation and amortization 12.5 11.6 0.3
Other segment items 5.2 0.5 0.0
Operating income (loss) (16.1) (12.1) (11.2)
Segment assets 246.4 256.6 9.4
Long-lived asset additions 1.4 0.3 0.0
Operating Segments | International      
Segment Reporting Information [Line Items]      
Revenues 277.2 279.6 273.6
Cost of goods sold 155.0 159.3 162.2
Selling, general and administrative expenses 110.1 114.2 111.7
Depreciation and amortization 5.7 6.0 5.5
Other segment items 0.0 1.1 1.1
Operating income (loss) 6.4 (1.0) (6.9)
Segment assets 246.8 269.1 256.0
Long-lived asset additions 14.9 3.9 2.6
Overhead      
Segment Reporting Information [Line Items]      
Revenues 7.2 11.2 9.7
Cost of goods sold (0.7) (6.9) (6.8)
Selling, general and administrative expenses 115.0 111.3 106.4
Depreciation and amortization 6.8 14.8 14.3
Other segment items 0.0 0.1 2.3
Operating income (loss) (113.9) (108.1) (106.5)
Segment assets 421.2 574.1 608.1
Long-lived asset additions $ 13.4 $ 14.7 $ 14.9