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Investments (Details) - USD ($) $ in Millions			9 Months Ended		12 Months Ended
	Nov. 05, 2015	Mar. 19, 2015	Feb. 29, 2016	Feb. 28, 2015	May. 31, 2015
Investments (Details) [Line Items]
Investments			$ 25.7	$ 18.6	$ 26.3
Proceeds from the sale of investments	$ 3.3		3.3	0.6
Realized gain on cost method investments	$ 2.2
Income from equity method investments			3.0	1.8
Make Believe Ideas Limited (MBI)
Investments (Details) [Line Items]
Percentage of interests acquired		48.50%
Period before purchase of remaining outstanding shares (in years)		4 years
Equity method investment			7.8	0.0	7.3
Children's Book Publishing and Distribution
Investments (Details) [Line Items]
Equity method investment			$ 17.9	18.6	17.9
Equity method ownership percentage			26.20%
Other Investments
Investments (Details) [Line Items]
Investments			$ 0.0	$ 0.0	1.1
UK Equity method
Investments (Details) [Line Items]
Realized gain on cost method investments					$ 0.6

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