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Weighted-Average Actual Target Allocation of Plan Assets (Detail) (USD $) In Thousands, unless otherwise specified | 12 Months Ended |  |
--- | --- | --- | ---
May 31, 2014 | May 31, 2013 | May 31, 2012
Pension Benefits, U.S. Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target Allocation | 100.00% |  |
Actual Asset Allocation | $ 282,113 | $ 241,960 | $ 198,208
Pension Benefits, U.S. Plans | Equity securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target Allocation | 55.00% |  |
Actual Asset Allocation | 193,800 | 146,200 |
Pension Benefits, U.S. Plans | Fixed maturity |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target Allocation | 25.00% |  |
Actual Asset Allocation | 81,500 | 74,100 |
Pension Benefits, U.S. Plans | Cash |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Actual Asset Allocation | 5,900 | 3,900 |
Pension Benefits, U.S. Plans | Real Estate |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target Allocation | 20.00% |  |
Actual Asset Allocation | 900 | 17,800 |
Pension Benefits, Non-U.S. Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target Allocation | 100.00% |  |
Actual Asset Allocation | 177,079 | 155,056 | 137,318
Pension Benefits, Non-U.S. Plans | Equity securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target Allocation | 42.00% |  |
Actual Asset Allocation | 84,000 | 81,800 |
Pension Benefits, Non-U.S. Plans | Fixed maturity |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target Allocation | 51.00% |  |
Actual Asset Allocation | 63,900 | 46,700 |
Pension Benefits, Non-U.S. Plans | Cash |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target Allocation | 1.00% |  |
Actual Asset Allocation | 500 | 200 |
Pension Benefits, Non-U.S. Plans | Real Estate |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target Allocation | 6.00% |  |
Actual Asset Allocation | $ 28,700 | $ 26,300 |

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- Definition Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Section 35 -Paragraph 50 -URI http://asc.fasb.org/extlink&oid=29635418&loc=d3e12355-114930 + Details
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- Definition Target allocation of investments of this type to total plan assets presented on a weighted average basis. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(i) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (c)(i) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e2446-114920 + Details
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- Definition Percentage of fair value of investments (categorized by debt securities, equity securities, real estate and other plan assets) to the fair value of plan assets held. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e2446-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
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