Segments - Schedule of Results of Operations by Reportable Segment (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Segment Reporting Information [Line Items]
Total revenue	$ 295.0	$ 220.6	$ 856.5	$ 593.2
Interest expense	6.0	6.1	17.6	17.7
Depreciation and amortization	24.4	21.0	69.2	51.6
Net income (loss)	(0.5)	0.3	(21.9)	(20.8)
New and Used Equipment Sales
Segment Reporting Information [Line Items]
Total revenue	136.8	97.9	392.6	275.2
Parts Sales
Segment Reporting Information [Line Items]
Total revenue	44.8	35.5	130.3	92.3
Service Revenue
Segment Reporting Information [Line Items]
Total revenue	41.9	35.5	123.0	94.1
Rental Revenue
Segment Reporting Information [Line Items]
Total revenue	41.7	32.2	113.0	83.4
Rental Equipment Sales
Segment Reporting Information [Line Items]
Total revenue	29.8	19.5	97.6	48.2
Operating Segments | Material Handling Segment
Segment Reporting Information [Line Items]
Total revenue	110.3	103.0	328.7	273.4
Interest expense	2.0	1.3	6.1	4.0
Depreciation and amortization	4.6	5.6	13.6	15.0
Net income (loss)	3.4	2.1	6.7	5.7
Operating Segments | Construction Segment
Segment Reporting Information [Line Items]
Total revenue	184.7	117.6	527.8	319.8
Interest expense	3.4	2.8	10.1	8.1
Depreciation and amortization	19.8	15.4	55.6	36.6
Net income (loss)	(0.2)	(7.9)	(5.2)	(12.6)
Operating Segments | New and Used Equipment Sales | Material Handling Segment
Segment Reporting Information [Line Items]
Total revenue	57.2	53.1	174.7	137.5
Operating Segments | New and Used Equipment Sales | Construction Segment
Segment Reporting Information [Line Items]
Total revenue	79.6	44.8	217.9	137.7
Operating Segments | Parts Sales | Material Handling Segment
Segment Reporting Information [Line Items]
Total revenue	16.8	15.4	47.7	40.2
Operating Segments | Parts Sales | Construction Segment
Segment Reporting Information [Line Items]
Total revenue	28.0	20.1	82.6	52.1
Operating Segments | Service Revenue | Material Handling Segment
Segment Reporting Information [Line Items]
Total revenue	23.7	22.1	70.4	58.5
Operating Segments | Service Revenue | Construction Segment
Segment Reporting Information [Line Items]
Total revenue	18.2	13.4	52.6	35.6
Operating Segments | Rental Revenue | Material Handling Segment
Segment Reporting Information [Line Items]
Total revenue	12.6	11.0	35.1	31.2
Operating Segments | Rental Revenue | Construction Segment
Segment Reporting Information [Line Items]
Total revenue	29.1	21.2	77.9	52.2
Operating Segments | Rental Equipment Sales | Material Handling Segment
Segment Reporting Information [Line Items]
Total revenue		1.4	0.8	6.0
Operating Segments | Rental Equipment Sales | Construction Segment
Segment Reporting Information [Line Items]
Total revenue	29.8	18.1	96.8	42.2
Corporate, Non-Segment
Segment Reporting Information [Line Items]
Interest expense	0.6	2.0	1.4	5.6
Net income (loss)	$ (3.7)	$ 6.1	$ (23.4)	$ (13.9)