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Reorganization Proceedings of Certain Subsidiaries - Additional Information (Detail) (USD $) | 6 Months Ended | 12 Months Ended | 6 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Nov. 30, 2013 | May 31, 2010 | May 31, 2008 | Nov. 30, 2013 Asbestos Trust | May 31, 2008 Subsidiaries | May 31, 2013 Subsidiaries | May 30, 2010 Subsidiaries | May 31, 2006 Subsidiaries
Reorganization [Line Items] |  |  |  |  |  |  |  |
Asbestos-related products liability claims paid |  | $ 92,600,000 |  | $ 125,000,000 |  |  |  |
Percentage of issuance of common stock |  |  |  | 100.00% |  |  |  |
Current and future asbestos claims |  |  |  |  |  | 1,170,000,000 |  |
Asbestos-related products liability, defense-related payments | 400,000 | 42,600,000 |  |  |  |  |  |
Accrued liability for asbestos |  |  |  |  | 559,700,000 |  | 397,700,000 | 421,300,000
Asbestos liability, term |  |  | 10 years |  |  |  |  |
Increase in Asbestos liability |  |  |  |  | $ 288,100,000 |  |  |

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- Definition Asbestos Liability, Noncurrent + References No definition available. + Details
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- Definition Percentage Of Issuance Of Common Stock + References No definition available. + Details
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- Details
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- Definition The amount of expense provided in the period for legal costs incurred on or before the balance sheet date pertaining to resolved, pending or threatened litigation, including arbitration and mediation proceedings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.3) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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- Definition Carrying amount as of the balance sheet date of reserves for the costs of settling insured claims and costs incurred in the claims settlement process attributable to asbestos and environmental claims, before estimated recoveries from reinsurers. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6482485&loc=d3e14764-158437 + Details
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- Definition The increase (decrease) during the reporting period in asbestos and environmental claims reserve, before estimated recoveries from reinsurers. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 3 -Subparagraph (b),(c) -URI http://asc.fasb.org/extlink&oid=6482485&loc=d3e14764-158437 + Details
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- Definition Amount of asbestos claims paid in the current period, net of reinsurance recoveries. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6482485&loc=d3e14764-158437 + Details
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