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Discontinued Operations and Divestiture Activities Narrative (Details) (USD $)
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6 Months Ended | 0 Months Ended | 3 Months Ended | 0 Months Ended | |
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Feb. 28, 2015
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Feb. 28, 2014
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Dec. 13, 2013
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Feb. 28, 2014
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Jun. 13, 2014
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| Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations and Divestiture Activities[Line Items] | |||||
| Proceeds from sale of businesses, net of transaction costs | $ 243,386,000us-gaap_ProceedsFromDivestitureOfBusinessesNetOfCashDivested | ||||
| Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax | 0us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax | 26,339,000us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax | |||
| Electrical | |||||
| Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations and Divestiture Activities[Line Items] | |||||
| Disposal Date | Dec. 13, 2013 | ||||
| Proceeds from sale of businesses, net of transaction costs |
252,400,000us-gaap_ProceedsFromDivestitureOfBusinessesNetOfCashDivested / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atu_ElectricalMember |
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| Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax |
26,339,000us-gaap_DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atu_ElectricalMember |
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| Gain on disposal |
34,459,000us-gaap_DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTax / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atu_ElectricalMember |
34,459,000us-gaap_DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTax / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atu_ElectricalMember |
34,459,000us-gaap_DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTax / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atu_ElectricalMember |
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| Recreational vehicle [Member] | |||||
| Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations and Divestiture Activities[Line Items] | |||||
| Disposal Date | Jun. 13, 2014 | ||||
| Proceeds from sale of businesses, net of transaction costs |
36,500,000us-gaap_ProceedsFromDivestitureOfBusinessesNetOfCashDivested / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atu_RecreationalvehicleMember |
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| Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal |
(13,495,000)us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atu_RecreationalvehicleMember |
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| Disposal Group, Not Discontinued Operations, Gain (Loss) on Disposal - net of tax |
2,800,000atu_DisposalGroupNotDiscontinuedOperationsGainLossonDisposalnetoftax / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atu_RecreationalvehicleMember |
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| Disposal Group, Not Discontinued Operations, revenue |
$ 13,100,000atu_DisposalGroupNotDiscontinuedOperationsrevenue / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atu_RecreationalvehicleMember |
$ 6,400,000atu_DisposalGroupNotDiscontinuedOperationsrevenue / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atu_RecreationalvehicleMember |
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| X | ||||||||||
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- Definition
Net loss (gain) on divested business - net tax No definition available.
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- Definition
Disposal Group, Not Discontinued Operations, revenue No definition available.
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| X | ||||||||||
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- Definition
Amount of gain (loss), before tax expense or benefit and not previously recognized, resulting from the sale of a business component. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of gain (loss), after tax expense or benefit and not previously recognized, resulting from the sale of a business component. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Date the entity disposed of a business or a group of assets, in CCYY-MM-DD format. No definition available.
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- Definition
The gain (loss) resulting from the sale of a disposal group that is not a discontinued operation. It is included in income from continuing operations before income taxes in the income statement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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| X | ||||||||||
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- Definition
This element represents the cash inflow during the period from the sale of a component of the entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Details
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