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Summary of Significant Accounting Policies and Related Information - General and cash (Details) | 12 Months Ended |
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Feb. 28, 2018 segment $ / shares | Feb. 28, 2017 $ / shares
Summary of Significant Accounting Policies and Related Information |  |
Common stock, par (in dollars per share) | $ / shares | $ 0.10 | $ 0.10
Number of segments | segment | 3 |

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- References No definition available. + Details
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- Definition Face amount or stated value per share of common stock. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. + References No definition available. + Details
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