Specialty Products Holding Corp. ("SPHC") - Additional Information (Detail) - USD ($)	3 Months Ended
Aug. 31, 2015	May. 31, 2015
Reorganization [Line Items]
Amount funded for trust as per agreement	$ 450,000,000
Revolving credit facility, maximum borrowing capacity	800,000,000
Initial payment for long term debt	450,000,000
Business combination, total consideration transferred	772,600,000
Business acquisition, preliminary fair value of goodwill	$ 1,202,311,000	$ 1,215,688,000
RPM Holdco
Reorganization [Line Items]
Percentage of ownership	21.39%
Business acquisition, allocation of total consideration	$ 208,400,000
Business acquisition, preliminary fair value of goodwill	118,700,000
Business acquisition, preliminary fair value of intangible assets	176,000,000
Business acquisition, preliminary fair value of income tax assets	271,700,000
Business acquisition, preliminary fair value of net deferred tax liabilities	72,300,000
RPM Holdco \| Indefinite-Lived Trade Names
Reorganization [Line Items]
Business acquisition, preliminary fair value of intangible assets	52,700,000
RPM Holdco \| Formulas
Reorganization [Line Items]
Business acquisition, preliminary fair value of intangible assets	2,600,000
RPM Holdco \| Customer Relationships
Reorganization [Line Items]
Business acquisition, preliminary fair value of intangible assets	118,700,000
RPM Holdco \| Definite-Lived Trade Names
Reorganization [Line Items]
Business acquisition, preliminary fair value of intangible assets	2,000,000
Other Long-Term Liabilities
Reorganization [Line Items]
Bankruptcy Note, net present value	329,700,000
Second Anniversary
Reorganization [Line Items]
Amount funded for trust as per agreement	102,500,000
Third Anniversary
Reorganization [Line Items]
Amount funded for trust as per agreement	120,000,000
Fourth Anniversary
Reorganization [Line Items]
Amount funded for trust as per agreement	125,000,000
Specialty Products Holding Corp. (SPHC) \| RPM Holdco
Reorganization [Line Items]
Business acquisition, allocation of total consideration	$ 564,200,000

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount of deferred tax asset attributable to deductible temporary differences and carryforwards that are expected to be realized or consumed after one year or the normal operating cycle, if longer, acquired at the acquisition date.

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