Revenue - Schedule of Disaggregated Revenue by Business Group (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2025	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Disaggregation of Revenue [Line Items]
Net sales	$ 1,492.7	$ 1,502.4	$ 1,484.3	$ 1,365.2	$ 1,334.3	$ 1,442.6	$ 1,452.5	$ 1,399.1	$ 5,844.6	$ 5,628.5	$ 5,372.9
United States
Disaggregation of Revenue [Line Items]
Net sales									5,411.3	5,159.3	4,922.4
International
Disaggregation of Revenue [Line Items]
Net sales									433.3	469.2	450.5
Utility Solutions
Disaggregation of Revenue [Line Items]
Net sales									3,672.3	3,600.7	3,261.7
Utility Solutions | United States
Disaggregation of Revenue [Line Items]
Net sales									3,518.9	3,428.2	3,090.7
Utility Solutions | International
Disaggregation of Revenue [Line Items]
Net sales									153.4	172.5	171.0
Utility Solutions | Grid Infrastructure
Disaggregation of Revenue [Line Items]
Net sales									2,748.2	2,531.3	2,259.2
Utility Solutions | Grid Automation
Disaggregation of Revenue [Line Items]
Net sales									924.1	1,069.4	1,002.5
Electrical Solutions
Disaggregation of Revenue [Line Items]
Net sales									2,172.3	2,027.8	2,111.2
Electrical Solutions | United States
Disaggregation of Revenue [Line Items]
Net sales									1,892.4	1,731.1	1,831.7
Electrical Solutions | International
Disaggregation of Revenue [Line Items]
Net sales									279.9	296.7	279.5
Electrical Solutions | Electrical Products
Disaggregation of Revenue [Line Items]
Net sales									885.2	835.3	823.0
Electrical Solutions | Industrial
Disaggregation of Revenue [Line Items]
Net sales									1,287.1	1,171.3	1,101.1
Electrical Solutions | Retail and Builder
Disaggregation of Revenue [Line Items]
Net sales									$ 0.0	$ 21.2	$ 187.1