Industry Segments and Geographic Area Information (Tables)

12 Months Ended

Dec. 31, 2025

Segment Reporting [Abstract]

Schedule of Industry Segment Data

INDUSTRY SEGMENT DATA

	2025			2024			2023
Net Sales:
Utility Solutions	$	3,672.3		$	3,600.7		$	3,261.7
Electrical Solutions	2,172.3			2,027.8			2,111.2
TOTAL NET SALES	$	5,844.6		$	5,628.5		$	5,372.9
Cost of Goods Sold:
Utility Solutions	$	2,396.3		$	2,418.4		$	2,129.8
Electrical Solutions	1,384.2			1,304.5			1,366.1
Total Cost of Goods Sold	$	3,780.5		$	3,722.9		$	3,495.9
Gross Profit:
Utility Solutions	$	1,276.0		$	1,182.3		$	1,131.9
Electrical Solutions	788.1			723.3			745.1
Total Gross Profit	$	2,064.1		$	1,905.6		$	1,877.0
Selling and Administrative Expenses:
Utility Solutions	$	486.1		$	450.5		$	433.5
Electrical Solutions	369.2			362.0			416.1
Total Selling and Administrative Expenses	$	855.3		$	812.5		$	849.6
Operating Income:
Utility Solutions	$	789.9		$	731.8		$	698.4
Electrical Solutions	418.9			361.3			329.0
Total Operating Income	$	1,208.8		$	1,093.1		$	1,027.4
Loss on disposition of business (Note 3)	(0.4)			(5.3)			—
Interest expense, net	(64.1)			(73.8)			(36.7)
Other expense, net	(25.2)			(7.2)			(18.5)
INCOME BEFORE INCOME TAXES	$	1,119.1		$	1,006.8		$	972.2
Operating Income as a % of Net Sales
Utility Solutions	21.5		%	20.3		%	21.4		%
Electrical Solutions	19.3		%	17.8		%	15.6		%
Total Operating Income as % of Net Sales	20.7		%	19.4		%	19.1		%

	2025		2024		2023
Assets:
Utility Solutions	$	5,603.8	$	4,569.1	$	4,690.1
Electrical Solutions	2,238.8		1,943.4		2,001.1
General Corporate	386.2		335.2		389.9
TOTAL ASSETS	$	8,228.8	$	6,847.7	$	7,081.1
Capital Expenditures:
Utility Solutions	$	81.3	$	103.6	$	99.5
Electrical Solutions	73.8		76.8		66.2
TOTAL CAPITAL EXPENDITURES	$	155.1	$	180.4	$	165.7
Depreciation and Amortization:
Utility Solutions	$	151.8	$	164.5	$	103.4
Electrical Solutions	54.3		47.6		46.3
TOTAL DEPRECIATION AND AMORTIZATION	$	206.1	$	212.1	$	149.7

Schedule of Geographic Area Data

GEOGRAPHIC AREA DATA

	2025		2024		2023
Net Sales:
United States	$	5,411.3	$	5,159.3	$	4,922.4
International	433.3		469.2		450.5
TOTAL NET SALES	$	5,844.6	$	5,628.5	$	5,372.9
Operating Income:
United States	$	1,123.6	$	1,008.6	$	925.9
International	85.2		84.5		101.5
TOTAL OPERATING INCOME	$	1,208.8	$	1,093.1	$	1,027.4
Long-lived Assets:
United States	$	5,122.9	$	4,128.9	$	4,250.7
International	486.1		457.3		488.8
TOTAL LONG-LIVED ASSETS	$	5,609.0	$	4,586.2	$	4,739.5