Change in Accounting Principle - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Nov. 30, 2018	Nov. 30, 2018
Cost of Sales
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Effect of change in accounting principle	$ 44.2	$ 88.9
Selling, General and Administrative Expenses
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Effect of change in accounting principle	$ (44.2)	$ (88.9)

Represents the quantification of the effect of adopting the new accounting standard or change in accounting principle expected by the entity to have a significant effect on the entity's financial statements.

No definition available.

Name:	us-gaap_NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoptionQuantification
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration