Segment Information - Schedule of Segment Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025	Dec. 31, 2025
Segment Reporting [Line Items]
TOTAL NET SALES	$ 1,872.5	$ 1,502.4	$ 5,101.0	$ 4,351.9
Total Cost of Goods Sold	1,184.3	958.1	3,294.5	2,812.9
Total Gross Profit	688.2	544.3	1,806.5	1,539.0
Total Selling and Administrative Expenses	279.5	213.7	785.4	641.7
Total Operating Income	408.7	330.6	1,021.1	897.3
Loss on disposition of business	0.0	0.0	0.0	(0.4)
Interest expense, net	(58.0)	(13.6)	(119.1)	(41.9)
Other expense, net	(5.4)	(5.9)	(16.6)	(17.4)
Income before income taxes	$ 345.3	$ 311.1	$ 885.4	$ 837.6
Total Operating Income as a % of Net Sales	21.80%	22.00%	20.00%	20.60%
Capital Expenditures:
TOTAL CAPITAL EXPENDITURES	$ 42.2	$ 30.5	$ 119.8	$ 96.4
Depreciation and Amortization:
TOTAL DEPRECIATION AND AMORTIZATION	92.3	49.4	220.1	144.6
Assets:
TOTAL ASSETS	11,898.3		11,898.3		$ 8,228.8
Utility Solutions
Segment Reporting [Line Items]
TOTAL NET SALES	1,027.8	943.8	3,002.5	2,736.4
Electrical Solutions
Segment Reporting [Line Items]
TOTAL NET SALES	844.7	558.6	2,098.5	1,615.5
Operating Segments | Utility Solutions
Segment Reporting [Line Items]
TOTAL NET SALES	1,027.8	943.8	3,002.5	2,736.4
Total Cost of Goods Sold	649.3	602.8	1,935.9	1,785.8
Total Gross Profit	378.5	341.0	1,066.6	950.6
Total Selling and Administrative Expenses	137.3	121.7	416.4	362.3
Total Operating Income	$ 241.2	$ 219.3	$ 650.2	$ 588.3
Total Operating Income as a % of Net Sales	23.50%	23.20%	21.70%	21.50%
Capital Expenditures:
TOTAL CAPITAL EXPENDITURES	$ 20.5	$ 18.8	$ 67.1	$ 54.7
Depreciation and Amortization:
TOTAL DEPRECIATION AND AMORTIZATION	41.1	35.6	131.1	103.8
Assets:
TOTAL ASSETS	5,694.8		5,694.8		5,603.8
Operating Segments | Electrical Solutions
Segment Reporting [Line Items]
TOTAL NET SALES	844.7	558.6	2,098.5	1,615.5
Total Cost of Goods Sold	535.0	355.3	1,358.6	1,027.1
Total Gross Profit	309.7	203.3	739.9	588.4
Total Selling and Administrative Expenses	142.2	92.0	369.0	279.4
Total Operating Income	$ 167.5	$ 111.3	$ 370.9	$ 309.0
Total Operating Income as a % of Net Sales	19.80%	19.90%	17.70%	19.10%
Capital Expenditures:
TOTAL CAPITAL EXPENDITURES	$ 21.7	$ 11.7	$ 52.7	$ 41.7
Depreciation and Amortization:
TOTAL DEPRECIATION AND AMORTIZATION	51.2	$ 13.8	89.0	$ 40.8
Assets:
TOTAL ASSETS	5,901.3		5,901.3		2,238.8
General Corporate
Assets:
TOTAL ASSETS	$ 302.2		$ 302.2		$ 386.2