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v3.20.2

Acquisitions (Details) - USD ($) $ in Millions |  | 12 Months Ended |  |
--- | --- | --- | --- | ---
Mar. 27, 2019 | May 31, 2020 | May 31, 2019 | Mar. 26, 2019 | May 31, 2018
Business Acquisition [Line Items] |  |  |  |  |
Goodwill |  | $ 124.9 | $ 125.2 |  | $ 119.2
Intangible assets acquired |  | 1.6 | 4.5 |  |
U.K. Book Publishing Business [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Intangible assets acquired |  | $ 1.6 | $ 3.9 |  |
Make Believe Ideas Limited (MBI) [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Additional equity interest acquired | 46.50% |  |  |  |
Ownership percentage | 95.00% | 100.00% |  | 48.50% |
Fair value of equity method investment | $ 4.6 | $ 22.3 |  | $ 12.1 |
Goodwill | 6.3 |  |  |  |
Consideration transferred | 7.6 |  |  |  |
Pre-acquisition payable | 3.0 |  |  |  |
Fair value of equity method investment, increase (decrease) | $ 0.1 |  |  |  |
Future operating cash flows projections, discount rate | 17.00% |  |  |  |
Foreign currency translation adjustment, income (loss) | $ (1.0) |  |  |  |
U.S. Based Book Fair Business and U.K. Based Book Business [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Intangible assets acquired |  | 0.6 |  |  |
U.S. Based Book Fair Business [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Intangible assets acquired |  | 0.3 |  |  |
U.K. Based Book Business [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Intangible assets acquired |  | $ 0.3 |  |  |
Trade Names [Member] | Make Believe Ideas Limited (MBI) [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Trade name | $ 3.9 |  |  |  |
Make Believe Ideas Limited (MBI) [Member] | Make Believe Ideas Limited (MBI) [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Noncontrolling ownership percentage | 5.00% |  |  |  |

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