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LONG-TERM DEBT AND CREDIT FACILITIES - Schedule of derivative instruments (Details) - Interest rate swap - USD ($) | Feb. 29, 2016 | Aug. 28, 2015 | May. 31, 2015 | Oct. 31, 2014
--- | --- | --- | --- | ---
Debt Instrument [Line Items] |  |  |  |
Notional amount |  | $ 250,000,000 |  | $ 500,000,000
Accounts Payable and Accrued Liabilities |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Interest rate swaps ($750 million notional) | $ 15,818,000 |  | $ 6,157,000 |
Notional amount | $ 750,000,000 |  |  |

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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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- Definition Fair value as of the balance sheet date of interest rate derivative liabilities, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized as liabilities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13433-108611 + Details
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