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Defined Contribution Plans (Details) - USD ($) $ in Millions | 12 Months Ended
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Feb. 28, 2019 | Feb. 28, 2018 | Feb. 28, 2017
Defined Contribution Plan [Abstract] |  |  |
Total matching contributions to saving plans | $ 4.0 | $ 3.9 | $ 3.2

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- References No definition available. + Details
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- Definition Amount of cost for defined contribution plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942 + Details
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