Restructuring Costs (Tables)

3 Months Ended

Mar. 31, 2021

Restructuring And Related Activities [Abstract]

Reconciliation of Accrued Restructuring Costs

The following is a reconciliation of the accrued restructuring costs between January 1, 2021 and March 31, 2021:

	2017 Altra Plan			2019 Altra Plan			Total All Plans
Balance at January 1, 2021	$	0.5		$	1.8		$	2.3
Restructuring expense incurred		—			0.9			0.9
Cash payments		(0.1	)		(1.4	)		(1.5	)
Balance at March 31, 2021		0.4			1.3			1.7

The following is a reconcilation of the accrued restructuring costs between January 1, 2020 and March 31, 2020:

	2017 Altra Plan			2019 Altra Plan			Total All Plans
Balance at January 1, 2020	$	1.5		$	2.6		$	4.1
Restructuring expense incurred		0.2			1.4			1.6
Cash payments		(0.4	)		(1.4	)		(1.8	)
Balance at March 31, 2020		1.3			2.6			3.9

Reconciliation of Restructuring Expense by Segment

The following is a reconciliation of restructuring expense by segment for the quarter ended March 31, 2021:

	2017 Altra Plan		2019 Altra Plan		Total All Plans
Power Transmission Technologies	$	—	$	0.6	$	0.6
Automation & Specialty		—		0.3		0.3
Total restructuring expense	$	—	$	0.9	$	0.9

The following is a reconciliation of restructuring expense by segment for the quarter ended March 31, 2020:

	2017 Altra Plan		2019 Altra Plan		Total All Plans
Power Transmission Technologies	$	0.2	$	0.4	$	0.6
Automation & Specialty		—		1.0		1.0
Total restructuring expense	$	0.2	$	1.4	$	1.6