Segment Information - Net Sales and Expense by Segment (Details) $ in Millions	12 Months Ended
Dec. 31, 2025 USD ($) segment	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Segment Reporting [Abstract]
Number of reportable segments \| segment	2
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net sales	$ 3,893.1	$ 3,006.1	$ 2,668.9
Cost of goods sold(1)	2,424.0	1,797.0	1,593.7
Selling, general and administrative	773.8	615.9	557.3
Research and development	78.5	66.1	55.2
Reportable segment income	$ 616.8	527.1	462.7
One Customer \| Net Sales Benchmark \| Customer Concentration Risk
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Concentration risk, percentage	11.00%
Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net sales	$ 3,893.1	3,006.1	2,668.9
Reportable segment income	909.6	757.6	677.2
Systems Protection
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net sales	2,592.9	1,823.3	1,605.9
Systems Protection \| Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net sales	2,592.9	1,823.3	1,605.9
Cost of goods sold(1)	1,686.5	1,143.4	1,011.6
Selling, general and administrative	320.1	239.1	218.0
Research and development	49.3	37.7	29.7
Reportable segment income	537.0	403.1	346.6
Electrical Connections
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net sales	1,300.2	1,182.8	1,063.0
Electrical Connections \| Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net sales	1,300.2	1,182.8	1,063.0
Cost of goods sold(1)	721.0	637.1	549.5
Selling, general and administrative	184.8	167.5	163.1
Research and development	21.8	23.7	19.8
Reportable segment income	$ 372.6	$ 354.5	$ 330.6

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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