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Restructuring Activities (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Mar. 31, 2015 | Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2015 | Mar. 31, 2014 | Mar. 31, 2013 | Apr. 30, 2015
Restructuring and repositioning expenses [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Employee severance and related benefits |  |  |  |  |  |  |  |  | $ 1.2 us-gaap_SeveranceCosts1 | $ 14.8 us-gaap_SeveranceCosts1 | $ 14.9 us-gaap_SeveranceCosts1 |
Accelerated depreciation |  |  |  |  |  |  |  |  | 0 us-gaap_RestructuringReserveAcceleratedDepreciation | 4.3 us-gaap_RestructuringReserveAcceleratedDepreciation | 0 us-gaap_RestructuringReserveAcceleratedDepreciation |
Other restructuring and repositioning expenses |  |  |  |  |  |  |  |  | 3.5 us-gaap_OtherRestructuringCosts | 1.3 us-gaap_OtherRestructuringCosts | 2.1 us-gaap_OtherRestructuringCosts |
Total |  |  |  |  |  |  |  |  | 4.7 us-gaap_RestructuringAndRelatedCostIncurredCost | 20.4 us-gaap_RestructuringAndRelatedCostIncurredCost | 17.0 us-gaap_RestructuringAndRelatedCostIncurredCost |
Changes in accrued severance [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | 19.4 us-gaap_RestructuringReserve |  |  |  | 11.6 us-gaap_RestructuringReserve | 19.4 us-gaap_RestructuringReserve | 11.6 us-gaap_RestructuringReserve |  |
Additions |  |  |  |  |  |  |  |  | 1.2 us-gaap_RestructuringReserveAccrualAdjustment | 14.8 us-gaap_RestructuringReserveAccrualAdjustment |  |
Payments |  |  |  |  |  |  |  |  | (7.3)us-gaap_PaymentsForRestructuring | (7.8)us-gaap_PaymentsForRestructuring |  |
Effect of exchange rate changes |  |  |  |  |  |  |  |  | (3.4)us-gaap_RestructuringReserveTranslationAdjustment | 0.8 us-gaap_RestructuringReserveTranslationAdjustment |  |
Ending balance | 9.9 us-gaap_RestructuringReserve |  |  |  | 19.4 us-gaap_RestructuringReserve |  |  |  | 9.9 us-gaap_RestructuringReserve | 19.4 us-gaap_RestructuringReserve | 11.6 us-gaap_RestructuringReserve |
Other [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Restructuring expenses | 1.0 us-gaap_RestructuringCharges | 1.9 us-gaap_RestructuringCharges | 1.0 us-gaap_RestructuringCharges | 0.8 us-gaap_RestructuringCharges | 5.6 us-gaap_RestructuringCharges | 9.4 us-gaap_RestructuringCharges | 0.6 us-gaap_RestructuringCharges | 0.5 us-gaap_RestructuringCharges | 4.7 us-gaap_RestructuringCharges | 16.1 us-gaap_RestructuringCharges | 17.0 us-gaap_RestructuringCharges |
Asset impairment charges | 7.8 us-gaap_AssetImpairmentCharges |  |  |  | 1.2 us-gaap_AssetImpairmentCharges | 2.0 us-gaap_AssetImpairmentCharges |  |  | 7.8 us-gaap_AssetImpairmentCharges | 3.2 us-gaap_AssetImpairmentCharges | 25.9 us-gaap_AssetImpairmentCharges |
Proceeds from the sale of assets |  |  |  |  |  |  |  |  | 7.6 us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment | 2.9 us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment | 0.4 us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment |
Gain on the sale of assets |  | 3.2 us-gaap_GainLossOnSaleOfProperties |  |  |  |  |  |  | 3.2 us-gaap_GainLossOnSaleOfProperties | 0 us-gaap_GainLossOnSaleOfProperties | 0 us-gaap_GainLossOnSaleOfProperties |
Assets held for sale | 3.2 us-gaap_AssetsHeldForSaleLongLivedFairValueDisclosure |  |  |  | 11.6 us-gaap_AssetsHeldForSaleLongLivedFairValueDisclosure |  |  |  | 3.2 us-gaap_AssetsHeldForSaleLongLivedFairValueDisclosure | 11.6 us-gaap_AssetsHeldForSaleLongLivedFairValueDisclosure |  |
Cost of Sales [Member] |  |  |  |  |  |  |  |  |  |  |  |
Restructuring and repositioning expenses [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Total |  |  |  |  |  |  |  |  |  | 4.3 us-gaap_RestructuringAndRelatedCostIncurredCost / us-gaap_IncomeStatementLocationAxis = us-gaap_CostOfSalesMember |  |
Europe Segment [Member] |  |  |  |  |  |  |  |  |  |  |  |
Other [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Asset impairment charges |  |  |  |  |  |  |  |  |  | 2.0 us-gaap_AssetImpairmentCharges / us-gaap_StatementBusinessSegmentsAxis = mod_EuropeSegmentMember | 24.1 us-gaap_AssetImpairmentCharges / us-gaap_StatementBusinessSegmentsAxis = mod_EuropeSegmentMember |
Proceeds from the sale of assets |  |  |  |  |  |  |  |  | 5.8 us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment / us-gaap_StatementBusinessSegmentsAxis = mod_EuropeSegmentMember |  |  |
Gain on the sale of assets |  |  |  |  |  |  |  |  | 3.2 us-gaap_GainLossOnSaleOfProperties / us-gaap_StatementBusinessSegmentsAxis = mod_EuropeSegmentMember |  |  |
Amount reclassified from assets held for sale to property, plant and equipment | 4.7 mod_ReclassifiedFromAssetsHeldForSaleToPropertyPlantAndEquipment / us-gaap_StatementBusinessSegmentsAxis = mod_EuropeSegmentMember |  |  |  |  |  |  |  | 4.7 mod_ReclassifiedFromAssetsHeldForSaleToPropertyPlantAndEquipment / us-gaap_StatementBusinessSegmentsAxis = mod_EuropeSegmentMember |  |  |
North America Segment [Member] |  |  |  |  |  |  |  |  |  |  |  |
Other [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Asset impairment charges |  |  |  |  |  |  |  |  |  | 1.2 us-gaap_AssetImpairmentCharges / us-gaap_StatementBusinessSegmentsAxis = mod_OriginalEquipmentNorthAmericaSegmentMember | 1.8 us-gaap_AssetImpairmentCharges / us-gaap_StatementBusinessSegmentsAxis = mod_OriginalEquipmentNorthAmericaSegmentMember |
North America Segment [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |  |
Other [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Expected employee severance costs during fiscal 2016 due to planned plant closure |  |  |  |  |  |  |  |  |  |  |  | $ 2.0 us-gaap_RestructuringAndRelatedCostExpectedCostRemaining1 / us-gaap_StatementBusinessSegmentsAxis = mod_OriginalEquipmentNorthAmericaSegmentMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember

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- Definition Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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- Definition The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585 + Details
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- Definition Amount of expected cost remaining for the specified restructuring cost. + References No definition available. + Details
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- Definition Discloses the amount charged against the accrued restructuring reserves, or earnings if not previously accrued, during the period for the specified type of restructuring cost. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section P -Subsection 3, 4 + Details
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- Definition Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 5.P.3) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140864-122747 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section P -Subsection 3, 4 + Details
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- Definition Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section P -Subsection 3, 4 + Details
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- Definition Amount of any reversal and other adjustment made during the period to the amount of a previously accrued liability for a specified type of restructuring cost, excluding adjustments for costs incurred during the period, costs settled during the period, and foreign currency translation adjustments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section P -Subsection 3, 4 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 40 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6394291&loc=d3e17658-110867 + Details
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- Definition Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 5.P.3) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140864-122747 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section P -Subsection 3, 4 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(10) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 + Details
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