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Cash and cash equivalents are the amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. 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Note: elements for number of nonredeemable preferred shares, par value and other disclosure concepts are in another section within stockholders' 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period.","units":{"USD":[{"start":"2012-09-01","end":"2013-05-31","val":2106000,"accn":"0001193125-14-263164","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-07-08"},{"start":"2013-03-01","end":"2013-05-31","val":2100000,"accn":"0001193125-13-441780","fy":2013,"fp":"FY","form":"10-K","filed":"2013-11-14","frame":"CY2013Q2"},{"start":"2012-09-01","end":"2013-08-31","val":2106000,"accn":"0001193125-14-411257","fy":2014,"fp":"FY","form":"10-K","filed":"2014-11-13","frame":"CY2013"},{"start":"2012-09-01","end":"2013-08-31","val":2106000,"accn":"0001193125-13-441780","fy":2013,"fp":"FY","form":"10-K","filed":"2013-11-14"}]}},"ProceedsFromLongTermLinesOfCredit":{"label":"Proceeds from Long-term Lines of Credit","description":"The cash inflow from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with maturities due beyond one year or the operating cycle, if 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fixtures.","units":{"USD":[{"end":"2011-08-31","val":107372000,"accn":"0001193125-13-284889","fy":2012,"fp":"FY","form":"10-K/A","filed":"2013-07-08","frame":"CY2011Q3I"},{"end":"2011-08-31","val":107372000,"accn":"0001193125-12-459869","fy":2012,"fp":"FY","form":"10-K","filed":"2012-11-08"},{"end":"2011-08-31","val":107372000,"accn":"0001193125-12-298378","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-07-10"},{"end":"2011-08-31","val":107372000,"accn":"0001193125-12-155385","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-04-09"},{"end":"2011-08-31","val":107372000,"accn":"0001193125-12-006184","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-01-09"},{"end":"2011-11-30","val":106705000,"accn":"0001193125-12-006184","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-01-09","frame":"CY2011Q4I"},{"end":"2012-02-29","val":111134000,"accn":"0001193125-12-155385","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-04-09","frame":"CY2012Q1I"},{"end":"2012-05-31","val":111155000,"accn":"0001193125-12-298378","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-07-10","frame":"CY2012Q2I"},{"end":"2012-08-31","val":113191000,"accn":"0001193125-13-441780","fy":2013,"fp":"FY","form":"10-K","filed":"2013-11-14","frame":"CY2012Q3I"},{"end":"2012-08-31","val":113191000,"accn":"0001193125-13-285906","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-07-09"},{"end":"2012-08-31","val":113191000,"accn":"0001193125-13-284925","fy":2013,"fp":"Q2","form":"10-Q/A","filed":"2013-07-08"},{"end":"2012-08-31","val":113191000,"accn":"0001193125-13-284913","fy":2013,"fp":"Q1","form":"10-Q/A","filed":"2013-07-08"},{"end":"2012-08-31","val":113191000,"accn":"0001193125-13-284889","fy":2012,"fp":"FY","form":"10-K/A","filed":"2013-07-08"},{"end":"2012-08-31","val":113191000,"accn":"0001193125-13-143252","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-04-05"},{"end":"2012-08-31","val":113191000,"accn":"0001193125-13-007862","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-01-09"},{"end":"2012-08-31","val":113191000,"accn":"0001193125-12-459869","fy":2012,"fp":"FY","form":"10-K","filed":"2012-11-08"},{"end":"2012-11-30","val":112390000,"accn":"0001193125-13-284913","fy":2013,"fp":"Q1","form":"10-Q/A","filed":"2013-07-08","frame":"CY2012Q4I"},{"end":"2012-11-30","val":112390000,"accn":"0001193125-13-007862","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-01-09"},{"end":"2013-02-28","val":110948000,"accn":"0001193125-13-284925","fy":2013,"fp":"Q2","form":"10-Q/A","filed":"2013-07-08","frame":"CY2013Q1I"},{"end":"2013-02-28","val":110948000,"accn":"0001193125-13-143252","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-04-05"},{"end":"2013-05-31","val":109035000,"accn":"0001193125-13-285906","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-07-09","frame":"CY2013Q2I"},{"end":"2013-08-31","val":112141000,"accn":"0001193125-14-411257","fy":2014,"fp":"FY","form":"10-K","filed":"2014-11-13","frame":"CY2013Q3I"},{"end":"2013-08-31","val":112141000,"accn":"0001193125-14-263164","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-07-08"},{"end":"2013-08-31","val":112141000,"accn":"0001193125-14-136505","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-04-09"},{"end":"2013-08-31","val":112141000,"accn":"0001193125-14-006172","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-01-09"},{"end":"2013-08-31","val":112141000,"accn":"0001193125-13-441780","fy":2013,"fp":"FY","form":"10-K","filed":"2013-11-14"},{"end":"2013-11-30","val":112059000,"accn":"0001193125-14-006172","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-01-09","frame":"CY2013Q4I"},{"end":"2014-02-28","val":111519000,"accn":"0001193125-14-136505","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-04-09","frame":"CY2014Q1I"},{"end":"2014-05-31","val":111761000,"accn":"0001193125-14-263164","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-07-08","frame":"CY2014Q2I"},{"end":"2014-08-31","val":114804000,"accn":"0001193125-15-006558","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-01-09","frame":"CY2014Q3I"},{"end":"2014-08-31","val":114804000,"accn":"0001193125-14-411257","fy":2014,"fp":"FY","form":"10-K","filed":"2014-11-13"},{"end":"2014-11-30","val":115984000,"accn":"0001193125-15-006558","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-01-09","frame":"CY2014Q4I"}]}},"ProvisionForDoubtfulAccounts":{"label":"Accounts Receivable, Credit Loss Expense (Reversal)","description":"Amount of expense (reversal of expense) for expected credit loss on accounts receivable.","units":{"USD":[{"start":"2009-09-01","end":"2010-08-31","val":218000,"accn":"0001193125-13-284889","fy":2012,"fp":"FY","form":"10-K/A","filed":"2013-07-08","frame":"CY2010"},{"start":"2009-09-01","end":"2010-08-31","val":218000,"accn":"0001193125-12-459869","fy":2012,"fp":"FY","form":"10-K","filed":"2012-11-08"},{"start":"2010-09-01","end":"2011-08-31","val":958000,"accn":"0001193125-13-441780","fy":2013,"fp":"FY","form":"10-K","filed":"2013-11-14","frame":"CY2011"},{"start":"2010-09-01","end":"2011-08-31","val":-958000,"accn":"0001193125-13-284889","fy":2012,"fp":"FY","form":"10-K/A","filed":"2013-07-08"},{"start":"2010-09-01","end":"2011-08-31","val":-958000,"accn":"0001193125-12-459869","fy":2012,"fp":"FY","form":"10-K","filed":"2012-11-08"},{"start":"2011-09-01","end":"2012-08-31","val":-42000,"accn":"0001193125-14-411257","fy":2014,"fp":"FY","form":"10-K","filed":"2014-11-13","frame":"CY2012"},{"start":"2011-09-01","end":"2012-08-31","val":-42000,"accn":"0001193125-13-441780","fy":2013,"fp":"FY","form":"10-K","filed":"2013-11-14"},{"start":"2011-09-01","end":"2012-08-31","val":42000,"accn":"0001193125-13-284889","fy":2012,"fp":"FY","form":"10-K/A","filed":"2013-07-08"},{"start":"2011-09-01","end":"2012-08-31","val":42000,"accn":"0001193125-12-459869","fy":2012,"fp":"FY","form":"10-K","filed":"2012-11-08"},{"start":"2012-09-01","end":"2013-08-31","val":241000,"accn":"0001193125-14-411257","fy":2014,"fp":"FY","form":"10-K","filed":"2014-11-13","frame":"CY2013"},{"start":"2012-09-01","end":"2013-08-31","val":241000,"accn":"0001193125-13-441780","fy":2013,"fp":"FY","form":"10-K","filed":"2013-11-14"},{"start":"2013-09-01","end":"2014-08-31","val":115000,"accn":"0001193125-14-411257","fy":2014,"fp":"FY","form":"10-K","filed":"2014-11-13","frame":"CY2014"}]}},"ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax":{"label":"Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax","description":"Amount after tax of reclassification adjustments of other comprehensive income (loss).","units":{"USD":[{"start":"2012-09-01","end":"2012-11-30","val":1831000,"accn":"0001193125-14-006172","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-01-09","frame":"CY2012Q4"},{"start":"2012-09-01","end":"2013-02-28","val":1631000,"accn":"0001193125-14-136505","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-04-09"},{"start":"2012-09-01","end":"2013-05-31","val":1426000,"accn":"0001193125-14-263164","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-07-08"},{"start":"2013-09-01","end":"2013-11-30","val":-1320000,"accn":"0001193125-14-006172","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-01-09","frame":"CY2013Q4"},{"start":"2013-09-01","end":"2014-02-28","val":-3577000,"accn":"0001193125-14-136505","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-04-09"},{"start":"2013-09-01","end":"2014-05-31","val":-6068000,"accn":"0001193125-14-263164","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-07-08"}]}},"RecoveryOfDirectCosts":{"label":"Recovery of Direct Costs","description":"Return of or reimbursements received in relation to direct costs and expenses previously paid or incurred.","units":{"USD":[{"start":"2013-03-16","end":"2013-04-16","val":300000,"accn":"0001193125-13-285906","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-07-09"},{"start":"2013-03-01","end":"2013-05-31","val":300000,"accn":"0001193125-13-441780","fy":2013,"fp":"FY","form":"10-K","filed":"2013-11-14","frame":"CY2013Q2"}]}},"RecyclingOperatingCosts":{"label":"Recycling Operating Costs (Deprecated 2016-01-31)","description":"Operating costs incurred in recycling minerals, chemicals, and other by-products.","units":{"USD":[{"start":"2009-09-01","end":"2010-08-31","val":38700000,"accn":"0001193125-12-459869","fy":2012,"fp":"FY","form":"10-K","filed":"2012-11-08","frame":"CY2010"},{"start":"2010-09-01","end":"2011-08-31","val":56800000,"accn":"0001193125-12-459869","fy":2012,"fp":"FY","form":"10-K","filed":"2012-11-08","frame":"CY2011"},{"start":"2011-09-01","end":"2012-08-31","val":70000000,"accn":"0001193125-12-459869","fy":2012,"fp":"FY","form":"10-K","filed":"2012-11-08","frame":"CY2012"}]}},"RepaymentsOfLongTermCapitalLeaseObligations":{"label":"Repayments of Long-term Capital Lease Obligations","description":"The cash outflow for the obligation for a lease meeting the criteria for capitalization (with maturities exceeding one year or beyond the operating cycle of the entity, if 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