Fair Value Measurements (Tables)

12 Months Ended

May 31, 2018

Fair Value Disclosures [Abstract]

Schedule of Fair Value Measurements

The following tables present non-financial assets that were measured and recognized at fair value on a non-recurring basis and the total impairment losses and additions recognized on those assets:

	Net carrying value as of		Fair value measured and recognized using						Impairment losses for fiscal year ended		Additions due to other investments and acquisitions
	May 31, 2018		Level 1		Level 2		Level 3		May 31, 2018
Property, plant and equipment, net	$	—	$	—	$	—	$	—	$	11.2	$	—
Intangible assets	—		—		—		—		—		3.3

	Net carrying value as of		Fair value measured and recognized using						Impairment losses for fiscal year ended		Additions due to other investments and acquisitions
	May 31, 2017		Level 1		Level 2		Level 3		May 31, 2017
Property, plant and equipment, net	$	—	$	—	$	—	$	—	$	5.7	$	—
Goodwill	2.8		—		—		2.8		—		2.8
Prepublication assets	—		—		—		—		1.1		—
Intangible assets	6.8		—		—		7.0		—		7.0

	Net carrying value as of		Fair value measured and recognized using						Impairment losses for fiscal year ended		Additions due to other investments and acquisitions
	May 31, 2016		Level 1		Level 2		Level 3		May 31, 2016
Property, plant and equipment, net	$	—	$	—	$	—	$	—	$	7.5	$	—
Prepublication assets	—		—		—		—		6.9		—
Intangible assets	1.9		—		—		2.4		—		2.4