Specialty Products Holding Corp. ("SPHC") - Additional Information (Detail) - USD ($)	6 Months Ended
Nov. 30, 2015	May. 31, 2015
Reorganization [Line Items]
Amount funded for trust as per agreement	$ 450,000,000
Initial payment for long term debt	450,000,000
Business combination, total consideration transferred	772,600,000
Business acquisition, preliminary fair value of goodwill	$ 1,187,204,000	$ 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
SPHC
Reorganization [Line Items]
Business acquisition, allocation of total consideration	564,200,000
Indefinite-Lived Trade Names \| SPHC
Reorganization [Line Items]
Business acquisition, preliminary fair value of intangible assets	52,700,000
Formulas \| SPHC
Reorganization [Line Items]
Business acquisition, preliminary fair value of intangible assets	2,600,000
Customer Relationships \| SPHC
Reorganization [Line Items]
Business acquisition, preliminary fair value of intangible assets	118,700,000
Definite-Lived Trade Names \| SPHC
Reorganization [Line Items]
Business acquisition, preliminary fair value of intangible assets	2,000,000
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
Revolving Credit Facility
Reorganization [Line Items]
Revolving credit facility, maximum borrowing capacity	800,000,000
Other Long-Term Liabilities
Reorganization [Line Items]
Bankruptcy Note, net present value	$ 331,500,000

Net present value of promissory notes payable.

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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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Amount of deferred tax liability attributable to taxable temporary differences due after one year or the normal operating cycle, if longer, assumed at the acquisition date.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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