Inventories - Schedule of Retrospective Adjustment for Change in Inventory (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended									12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cost of sales												$ 1,533.5
Operating (loss) income										$ 1.1	$ (153.3)	(12.4)
Loss from continuing operations before taxes										(39.5)	(268.1)	(111.0)
Provision (benefit) for taxes on income										(49.5)	100.5	(41.1)
Loss from continuing operations										10.0	(368.6)	(69.9)
Net (loss) income												65.5
Net (loss) income attributable to Manitowoc common shareholders										$ 9.4	$ (375.8)	$ 65.5
Basic (loss) income per share from continuing operations										$ 0.28	$ (10.70)	$ (2.06)
Diluted (loss) income per share from continuing operations										$ 0.28	$ (10.70)	$ (2.06)
Deferred income taxes										$ (44.1)	$ 101.4	$ (4.4)
Inventories										$ 55.6	$ 52.7	(7.2)
Historical
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cost of sales												1,537.0
Operating (loss) income	$ 7.0	$ 7.9	$ 9.9	$ (23.7)	$ (23.8)	$ (134.2)	$ 3.9	$ 0.8				(15.9)
Loss from continuing operations before taxes	(4.6)	(3.4)	3.0	(34.5)	(34.6)	(144.2)	(4.3)	(85.0)				(114.5)
Provision (benefit) for taxes on income	(40.2)	(13.1)	2.3	1.5	(2.6)	(5.3)	0.7	107.7				(42.6)
Loss from continuing operations												(71.9)
Net (loss) income	$ 35.3	$ 9.6	0.5	$ (36.0)	$ (33.4)	$ (140.7)	$ (5.8)	$ (195.9)				63.5
Net (loss) income attributable to Manitowoc common shareholders												$ 63.5
Basic (loss) income per share from continuing operations	$ 1.01	$ 0.28		$ (1.04)	$ (0.92)	$ (4.01)	$ (0.15)	$ (5.64)				$ (2.11)
Diluted (loss) income per share from continuing operations	$ 0.98	$ 0.28		$ (1.04)	$ (0.92)	$ (4.01)	$ (0.15)	$ (5.64)				$ (2.11)
Deferred income taxes	$ 42.8	$ 1.3			$ 12.6	$ (2.6)	$ (1.1)	$ (110.3)				$ (5.9)
Inventories	$ (89.4)	$ (0.8)	$ 3.4	$ 31.2	$ (85.1)	$ (7.5)	$ 6.2	33.7				(3.7)
Impact of Change to FIFO
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cost of sales												(3.5)
Operating (loss) income												3.5
Loss from continuing operations before taxes												3.5
Provision (benefit) for taxes on income									$ 2.1			1.5
Loss from continuing operations								$ (3.5)				2.0
Net (loss) income												2.0
Net (loss) income attributable to Manitowoc common shareholders												$ 2.0
Basic (loss) income per share from continuing operations												$ 0.02
Diluted (loss) income per share from continuing operations												$ 0.02
Deferred income taxes												$ 1.5
Inventories												$ (3.5)