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Contingent Liabilities (Details) - USD ($) $ in Millions | Aug. 31, 2017 | Feb. 28, 2017
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Commitments and Contingencies Disclosure [Abstract] |  |
Liability associated with guarantee | $ 6.5 | $ 6.3

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- Definition Amount as of the balance sheet date of the aggregate standard product warranty liability. Does not include the balance for the extended product warranty liability. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (c)(1),(c)(5) -URI http://asc.fasb.org/extlink&oid=68068213&loc=d3e12565-110249 + Details
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