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General - Additional Information (Detail) | Sep. 30, 2015
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Minimum [Member] |
Investment Holdings [Line Items] |
Individual investments percent of net assets available for benefits | 5.00%

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- Definition Percent of net assets at close of period. For schedules of investments that are categorized, each category has a percent of net assets for the aggregated value of the Investments in the category. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-12.3) -URI http://asc.fasb.org/extlink&oid=50485924&loc=d3e611133-123010 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-12C.Column D.2) -URI http://asc.fasb.org/extlink&oid=50485924&loc=d3e611225-123010 + Details
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