Commitments and Contingencies - Narrative (Details) - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Product liability reserves
Product liabilities	$ 20.1	$ 20.8

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No definition available.

Name:	mtw_ProductLiabilityAbstract
Namespace Prefix:	mtw_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration