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This item includes treasury stock repurchased by the entity. 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The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital).","units":{"USD":[{"start":"2008-10-01","end":"2009-09-30","val":54773000,"accn":"0001193125-11-315702","fy":2011,"fp":"FY","form":"10-K","filed":"2011-11-17","frame":"CY2009"},{"start":"2009-10-01","end":"2010-09-30","val":0,"accn":"0001066026-12-000021","fy":2012,"fp":"FY","form":"10-K","filed":"2012-11-15","frame":"CY2010"},{"start":"2010-10-01","end":"2011-09-30","val":1753000,"accn":"0001193125-11-315702","fy":2011,"fp":"FY","form":"10-K","filed":"2011-11-17"},{"start":"2010-10-01","end":"2011-09-30","val":1753000,"accn":"0001066026-12-000021","fy":2012,"fp":"FY","form":"10-K","filed":"2012-11-15"},{"start":"2010-10-01","end":"2011-09-30","val":1753000,"accn":"0001066026-13-000022","fy":2013,"fp":"FY","form":"10-K","filed":"2013-11-13","frame":"CY2011"},{"start":"2011-10-01","end":"2011-12-31","val":473000,"accn":"0001066026-12-000006","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-02-07"},{"start":"2011-10-01","end":"2011-12-31","val":473000,"accn":"0001066026-13-000004","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-02-06","frame":"CY2011Q4"},{"start":"2011-10-01","end":"2012-03-31","val":1224000,"accn":"0001066026-12-000009","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-05-08"},{"start":"2011-10-01","end":"2012-03-31","val":1224000,"accn":"0001066026-13-000010","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-05-06"},{"start":"2011-10-01","end":"2012-06-30","val":1300000,"accn":"0001066026-12-000016","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-08-07"},{"start":"2011-10-01","end":"2012-06-30","val":1300000,"accn":"0001066026-13-000016","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-08-06"},{"start":"2011-10-01","end":"2012-09-30","val":1301000,"accn":"0001066026-12-000021","fy":2012,"fp":"FY","form":"10-K","filed":"2012-11-15"},{"start":"2011-10-01","end":"2012-09-30","val":1301000,"accn":"0001066026-13-000022","fy":2013,"fp":"FY","form":"10-K","filed":"2013-11-13"},{"start":"2011-10-01","end":"2012-09-30","val":1301000,"accn":"0001066026-14-000019","fy":2014,"fp":"FY","form":"10-K","filed":"2014-11-18","frame":"CY2012"},{"start":"2012-10-01","end":"2012-12-31","val":201000,"accn":"0001066026-13-000004","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-02-06"},{"start":"2012-10-01","end":"2012-12-31","val":201000,"accn":"0001066026-14-000006","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-02-06","frame":"CY2012Q4"},{"start":"2012-10-01","end":"2013-03-31","val":201000,"accn":"0001066026-13-000010","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-05-06"},{"start":"2012-10-01","end":"2013-03-31","val":201000,"accn":"0001066026-14-000012","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-05-07"},{"start":"2012-10-01","end":"2013-06-30","val":651000,"accn":"0001066026-13-000016","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-08-06"},{"start":"2012-10-01","end":"2013-06-30","val":651000,"accn":"0001066026-14-000015","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-08-06"},{"start":"2012-10-01","end":"2013-09-30","val":651000,"accn":"0001066026-13-000022","fy":2013,"fp":"FY","form":"10-K","filed":"2013-11-13"},{"start":"2012-10-01","end":"2013-09-30","val":651000,"accn":"0001066026-14-000019","fy":2014,"fp":"FY","form":"10-K","filed":"2014-11-18","frame":"CY2013"},{"start":"2013-10-01","end":"2013-12-31","val":441000,"accn":"0001066026-14-000006","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-02-06","frame":"CY2013Q4"},{"start":"2013-10-01","end":"2014-03-31","val":441000,"accn":"0001066026-14-000012","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-05-07"},{"start":"2013-10-01","end":"2014-06-30","val":925000,"accn":"0001066026-14-000015","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-08-06"},{"start":"2013-10-01","end":"2014-09-30","val":925000,"accn":"0001066026-14-000019","fy":2014,"fp":"FY","form":"10-K","filed":"2014-11-18","frame":"CY2014"}]}},"StockRepurchasedDuringPeriodValue":{"label":"Stock Repurchased During Period, Value","description":"Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.","units":{"USD":[{"start":"2007-10-01","end":"2008-09-30","val":-43763000,"accn":"0001193125-10-263894","fy":2010,"fp":"FY","form":"10-K","filed":"2010-11-18","frame":"CY2008"},{"start":"2008-10-01","end":"2009-09-30","val":-54773000,"accn":"0001193125-10-263894","fy":2010,"fp":"FY","form":"10-K","filed":"2010-11-18","frame":"CY2009"},{"start":"2008-10-01","end":"2009-09-30","val":-54773000,"accn":"0001193125-10-179194","fy":2010,"fp":"Q3","form":"10-Q","filed":"2010-08-05"}]}},"StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased":{"label":"Stock Repurchase Program, Number of Shares Authorized to be Repurchased","description":"The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.","units":{"shares":[{"end":"2012-09-30","val":12000000,"accn":"0001066026-12-000021","fy":2012,"fp":"FY","form":"10-K","filed":"2012-11-15","frame":"CY2012Q3I"},{"end":"2013-09-30","val":12000000,"accn":"0001066026-13-000022","fy":2013,"fp":"FY","form":"10-K","filed":"2013-11-13","frame":"CY2013Q3I"},{"end":"2014-09-30","val":12000000,"accn":"0001066026-14-000019","fy":2014,"fp":"FY","form":"10-K","filed":"2014-11-18","frame":"CY2014Q3I"}]}},"StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased":{"label":"Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased","description":"The remaining number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.","units":{"shares":[{"end":"2011-09-30","val":4100000,"accn":"0001193125-11-315702","fy":2011,"fp":"FY","form":"10-K","filed":"2011-11-17","frame":"CY2011Q3I"},{"end":"2012-09-30","val":7100000,"accn":"0001066026-12-000021","fy":2012,"fp":"FY","form":"10-K","filed":"2012-11-15","frame":"CY2012Q3I"},{"end":"2013-09-30","val":7100000,"accn":"0001066026-13-000022","fy":2013,"fp":"FY","form":"10-K","filed":"2013-11-13","frame":"CY2013Q3I"},{"end":"2014-09-30","val":7100000,"accn":"0001066026-14-000019","fy":2014,"fp":"FY","form":"10-K","filed":"2014-11-18","frame":"CY2014Q3I"}]}},"TaxCreditCarryforwardAmount":{"label":"Tax Credit Carryforward, Amount","description":"The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.","units":{"USD":[{"end":"2013-09-30","val":11200000,"accn":"0001066026-13-000022","fy":2013,"fp":"FY","form":"10-K","filed":"2013-11-13","frame":"CY2013Q3I"},{"end":"2014-09-30","val":12200000,"accn":"0001066026-14-000019","fy":2014,"fp":"FY","form":"10-K","filed":"2014-11-18","frame":"CY2014Q3I"}]}},"TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests":{"label":"Temporary Equity, Carrying Amount, Including Portion Attributable to Noncontrolling Interests","description":"Carrying amount, attributable to parent and noncontrolling interests, of an entity's issued and outstanding stock which is not included within permanent equity. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. Includes stock with a put option held by an ESOP and stock redeemable by a holder only in the event of a change in control of the issuer.","units":{"USD":[{"end":"2012-09-30","val":35893000,"accn":"0001066026-14-000015","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-08-06"},{"end":"2012-09-30","val":35900000,"accn":"0001066026-14-000019","fy":2014,"fp":"FY","form":"10-K","filed":"2014-11-18","frame":"CY2012Q3I"},{"end":"2013-09-30","val":22074000,"accn":"0001066026-14-000015","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-08-06"},{"end":"2013-09-30","val":22074000,"accn":"0001066026-14-000019","fy":2014,"fp":"FY","form":"10-K","filed":"2014-11-18","frame":"CY2013Q3I"},{"end":"2014-06-30","val":11632000,"accn":"0001066026-14-000015","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-08-06","frame":"CY2014Q2I"},{"end":"2014-09-30","val":8028000,"accn":"0001066026-14-000019","fy":2014,"fp":"FY","form":"10-K","filed":"2014-11-18","frame":"CY2014Q3I"}]}},"TemporaryEquityOtherChanges":{"label":"Temporary Equity, Other Changes","description":"Amount of increase (decrease) in temporary equity from changes classified as other.","units":{"USD":[{"start":"2011-10-01","end":"2012-09-30","val":-35893000,"accn":"0001066026-14-000019","fy":2014,"fp":"FY","form":"10-K","filed":"2014-11-18","frame":"CY2012"},{"start":"2012-10-01","end":"2012-12-31","val":35893000,"accn":"0001066026-14-000006","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-02-06","frame":"CY2012Q4"},{"start":"2012-10-01","end":"2013-03-31","val":6399000,"accn":"0001066026-14-000012","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-05-07"},{"start":"2012-10-01","end":"2013-06-30","val":10468000,"accn":"0001066026-14-000015","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-08-06"},{"start":"2012-10-01","end":"2013-09-30","val":13819000,"accn":"0001066026-14-000019","fy":2014,"fp":"FY","form":"10-K","filed":"2014-11-18","frame":"CY2013"},{"start":"2013-10-01","end":"2013-12-31","val":3420000,"accn":"0001066026-14-000006","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-02-06","frame":"CY2013Q4"},{"start":"2013-10-01","end":"2014-03-31","val":6901000,"accn":"0001066026-14-000012","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-05-07"},{"start":"2013-10-01","end":"2014-06-30","val":10442000,"accn":"0001066026-14-000015","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-08-06"},{"start":"2013-10-01","end":"2014-09-30","val":14046000,"accn":"0001066026-14-000019","fy":2014,"fp":"FY","form":"10-K","filed":"2014-11-18","frame":"CY2014"}]}},"TemporaryEquityRedemptionValue":{"label":"Temporary Equity, Redemption Value (Deprecated 2014-01-31)","description":"The aggregate amount to be paid by the entity upon redemption of the security that is classified as temporary equity. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. 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