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.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Restructuring - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
Restructuring - Narrative (Details) - USD ($) $ in Millions	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Restructuring Cost and Reserve [Line Items]
Restructuring expense	$ 2.7	$ 3.8	$ 7.2	$ 10.0
Tansfer of Crawler Crane production to Shady Grove, PA
Restructuring Cost and Reserve [Line Items]
Restructuring expense		$ 3.8		$ 10.0
Employee Severance
Restructuring Cost and Reserve [Line Items]
Restructuring expense	$ 2.7		$ 7.2