Restructuring Costs (Tables)

12 Months Ended

Dec. 31, 2017

Restructuring and Related Activities [Abstract]

Summary of Restructuring Costs

Pre-tax restructuring costs incurred in each of our segments and the location of the costs in the Consolidated Statement of Income for the years ended December 31, 2017, 2016 and 2015 are as follows (in millions):

Year Ended December 31, 2015	Cost of goods sold		Selling & administrative expense		Total
Electrical Segment	$	14.5	$	7.2	$	21.7
Power Segment	0.8		1.1		1.9
Total 2015 Restructuring Costs	$	15.3	$	8.3	$	23.6
Year Ended December 31, 2016
Electrical Segment	$	27.3	$	6.6	$	33.9
Power Segment	0.2		0.9		1.1
Total 2016 Restructuring Costs	$	27.5	$	7.5	$	35.0
Year Ended December 31, 2017
Electrical Segment	$	11.5	$	5.4	$	16.9
Power Segment	2.2		1.2		3.4
Total 2017 Restructuring Costs	$	13.7	$	6.6	$	20.3

Schedule of Restructuring Reserve by Type of Cost

The actual and expected costs for our restructuring actions are as follows (in millions):

	Expected Costs		Costs incurred in 2015		Costs incurred in 2016		Costs incurred in 2017		Remaining costs at 12/31/17
2017 Restructuring Actions
Electrical Segment	$	13.0	$	—	$	—	$	10.6	$	2.4
Power Segment	3.9		—		—		3.4		0.5
Total 2017 Restructuring Actions	$	16.9	$	—	$	—	$	14.0	$	2.9
2016 Restructuring Actions
Electrical Segment	$	35.4	$	—	$	30.7	$	3.8	$	0.9
Power Segment	1.3		—		1.1		—		0.2
Total 2016 Restructuring Actions	$	36.7	$	—	$	31.8	$	3.8	$	1.1
2015 Restructuring Actions
Electrical Segment	$	23.0	$	17.3	$	3.2	$	2.5	$	—
Power Segment	1.9		1.9		—		—		—
Total 2015 and Prior Restructuring Actions	$	24.9	$	19.2	$	3.2	$	2.5	$	—
Total Restructuring Actions	$	78.5	$	19.2	$	35.0	$	20.3	$	4.0

The following table summarizes the accrued liabilities for our restructuring actions (in millions):

	Beginning Accrued Restructuring Balance 1/1/17		Pre-tax Restructuring Costs			Utilization and Foreign Exchange			Ending Accrued Restructuring Balance 12/31/2017
2017 Restructuring Actions
Severance	$	—	$	7.4		$	(3.8	)	$	3.6
Asset write-downs	—		0.5			(0.5		)	—
Facility closure and other costs	—		6.1			(4.3		)	1.8
Total 2017 Restructuring Actions	$	—	$	14.0		$	(8.6	)	$	5.4
2016 and Prior Restructuring Actions
Severance	$	10.4	$	(2.2	)	$	(6.4	)	$	1.8
Asset write-downs	—		—			—			—
Facility closure and other costs (a)	14.1		8.5			(8.9		)	13.7
Total 2016 and Prior Restructuring Actions	$	24.5	$	6.3		$	(15.3	)	$	15.5
Total Restructuring Actions	$	24.5	$	20.3		$	(23.9	)	$	20.9

^(a) The beginning and ending accrual for Facility closure and other costs includes a charge of approximately $12.5 million to accrue the estimated liability associated with the withdrawal from a multi-employer pension plan as a result of a restructuring action in 2016.