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Income Taxes (Details 6) (USD $) In Millions, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Income Tax Disclosure [Abstract] |  |  |
Change to gross unrecognized tax benefits including interest and penalties | $ (9.8)us-gaap_UnrecognizedTaxBenefitsPeriodIncreaseDecrease | $ (20.7)us-gaap_UnrecognizedTaxBenefitsPeriodIncreaseDecrease | $ (10.4)us-gaap_UnrecognizedTaxBenefitsPeriodIncreaseDecrease
Reserve released due to favorable audit | 8.3 mtw_EffectiveTaxRateReserveReleasedDueToFavorableAudit | 9.4 mtw_EffectiveTaxRateReserveReleasedDueToFavorableAudit | 11.6 mtw_EffectiveTaxRateReserveReleasedDueToFavorableAudit
Uncertain tax liabilities interest and penalties | (5.2)us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense | (9.3)us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense | (1.4)us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense
Uncertain tax liabilities interest and penalties accrued | 5.6 us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued | 12.8 us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued |
Unrecognized tax benefits and income tax expense possibly reduced from audit resolutions | 3.7 mtw_UnrecognizedTaxBenefitsDecreaseResultingFromSettlementsWithTaxingAuthoritiesDuringNextTwelveMonths |  |
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] |  |  |
Balance at beginning of year | 35.9 us-gaap_UnrecognizedTaxBenefits | 47.3 us-gaap_UnrecognizedTaxBenefits | 56.3 us-gaap_UnrecognizedTaxBenefits
Additions based on tax positions related to the current year | 15.5 us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions | 2.0 us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions | 1.8 us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions
Additions for tax positions of prior years | 0.1 us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions | 3.7 us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions | 3.6 us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions
Reductions for tax positions of prior years | (2.7)us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions | (8.1)us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions | (11.9)us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions
Reductions based on settlements with taxing authorities | (7.3)us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities | (3.6)us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities | (1.1)us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities
Reductions for lapse of statute | (8.2)us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations | (5.4)us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations | (1.4)us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations
Balance at end of year | $ 33.3 us-gaap_UnrecognizedTaxBenefits | $ 35.9 us-gaap_UnrecognizedTaxBenefits | $ 47.3 us-gaap_UnrecognizedTaxBenefits

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- Definition Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities During Next Twelve Months + References No definition available. + Details
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- Definition Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Unrecognized Tax Benefit -URI http://asc.fasb.org/extlink&oid=6527854 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 + Details
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- Definition Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 + Details
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