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v3.20.2

Fair Value Measurements (Details) - Schedule of non-financial assets measured and recorded at fair value on a non-recurring basis - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Feb. 29, 2020 | May 31, 2020 | May 31, 2019 | May 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Asset impairments and write downs | $ 40.0 | $ 40.6 | $ 0.9 | $ 11.2
Additions |  | 1.6 | 4.5 |
Fair Value, Nonrecurring [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Author Advances, Fair Value Disclosure |  | 0.0 |  |
Author Advances, Property, plant and equipment, net |  | 1.6 |  |
Prepublication assets |  | 0.0 |  |
Prepublication costs |  | 0.8 |  |
Property, plant and equipment, net |  | 0.0 | 0.0 | 0.0
Impairment of Long-Lived Assets to be Disposed of |  |  | 0.9 | 11.2
Asset impairments and write downs |  | 0.6 |  |
Investments, Fair Value Disclosure |  |  | 6.0 |
Investments Impairment Loss |  |  | 0.0 |
Intangible assets |  | 1.5 | 4.9 | 3.1
Impairment, Intangible assets |  | 0.0 | 0.0 | 0.0
Additions |  | 0.0 |  |
Fair Value, Nonrecurring [Member] | Property, Plant and Equipment, Net [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Additions |  | 0.0 | 0.0 | 0.0
Fair Value, Nonrecurring [Member] | Intangible Assets [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Intangible assets acquired |  | 1.6 | 5.1 | 3.3
Fair Value, Nonrecurring [Member] | Prepublication Costs [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Additions |  | 0.0 |  |
Fair Value, Nonrecurring [Member] | Investments Acquired [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Additions |  |  | 6.0 |
Fair Value, Nonrecurring [Member] | Level 1 [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Author Advances, Fair Value Disclosure |  | 0.0 |  |
Prepublication assets |  | 0.0 |  |
Property, plant and equipment, net |  | 0.0 | 0.0 | 0.0
Investments, Fair Value Disclosure |  |  | 0.0 |
Intangible assets |  | 0.0 | 0.0 | 0.0
Fair Value, Nonrecurring [Member] | Level 2 [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Author Advances, Fair Value Disclosure |  | 0.0 |  |
Prepublication assets |  | 0.0 |  |
Property, plant and equipment, net |  | 0.0 | 0.0 | 0.0
Investments, Fair Value Disclosure |  |  | 0.0 |
Intangible assets |  | 0.0 | 0.0 | 0.0
Fair Value, Nonrecurring [Member] | Level 3 [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Author Advances, Fair Value Disclosure |  | 1.6 |  |
Prepublication assets |  | 0.8 |  |
Property, plant and equipment, net |  | 0.6 | 0.0 | 0.0
Investments, Fair Value Disclosure |  |  | 6.0 |
Intangible assets |  | $ 1.6 | $ 5.1 | $ 3.3

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