REVENUE - Disaggregation of Revenue (Details) - USD ($) $ in Millions	2 Months Ended	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disaggregation of Revenue [Line Items]
Net sales		$ 5,691.5	$ 4,998.1	$ 4,370.6
E&I Acquisition
Disaggregation of Revenue [Line Items]
Net sales			67.4
Products and services transferred at a point in time
Disaggregation of Revenue [Line Items]
Net sales		4,153.3	3,838.4	3,249.3
Products and services transferred over time
Disaggregation of Revenue [Line Items]
Net sales		1,538.2	1,159.7	1,121.3
Critical infrastructure & solutions
Disaggregation of Revenue [Line Items]
Net sales		3,475.3	2,900.4	2,434.6
Services & spares
Disaggregation of Revenue [Line Items]
Net sales		1,480.6	1,438.7	1,317.1
Integrated rack solutions
Disaggregation of Revenue [Line Items]
Net sales		735.6	659.0	618.9
Americas
Disaggregation of Revenue [Line Items]
Net sales		2,728.6	2,187.4	2,040.6
Americas | E&I Acquisition
Disaggregation of Revenue [Line Items]
Net sales	$ 21.7
Americas | Products and services transferred at a point in time
Disaggregation of Revenue [Line Items]
Net sales		1,925.0	1,514.6	1,418.9
Americas | Products and services transferred over time
Disaggregation of Revenue [Line Items]
Net sales		803.6	672.8	621.7
Americas | Critical infrastructure & solutions
Disaggregation of Revenue [Line Items]
Net sales		1,608.4	1,189.6	1,074.2
Americas | Services & spares
Disaggregation of Revenue [Line Items]
Net sales		754.6	705.1	662.6
Americas | Integrated rack solutions
Disaggregation of Revenue [Line Items]
Net sales		365.6	292.7	303.8
Asia Pacific
Disaggregation of Revenue [Line Items]
Net sales		1,601.3	1,609.0	1,368.4
Asia Pacific | Products and services transferred at a point in time
Disaggregation of Revenue [Line Items]
Net sales		1,242.6	1,304.3	1,078.5
Asia Pacific | Products and services transferred over time
Disaggregation of Revenue [Line Items]
Net sales		358.7	304.7	289.9
Asia Pacific | Critical infrastructure & solutions
Disaggregation of Revenue [Line Items]
Net sales		949.3	971.7	830.7
Asia Pacific | Services & spares
Disaggregation of Revenue [Line Items]
Net sales		441.7	421.5	366.3
Asia Pacific | Integrated rack solutions
Disaggregation of Revenue [Line Items]
Net sales		210.3	215.8	171.4
Europe, Middle East, & Africa
Disaggregation of Revenue [Line Items]
Net sales		1,361.6	1,201.7	961.6
Europe, Middle East, & Africa | E&I Acquisition
Disaggregation of Revenue [Line Items]
Net sales	$ 45.7
Europe, Middle East, & Africa | Products and services transferred at a point in time
Disaggregation of Revenue [Line Items]
Net sales		985.7	1,019.5	751.9
Europe, Middle East, & Africa | Products and services transferred over time
Disaggregation of Revenue [Line Items]
Net sales		375.9	182.2	209.7
Europe, Middle East, & Africa | Critical infrastructure & solutions
Disaggregation of Revenue [Line Items]
Net sales		917.6	739.1	529.7
Europe, Middle East, & Africa | Services & spares
Disaggregation of Revenue [Line Items]
Net sales		284.3	312.1	288.2
Europe, Middle East, & Africa | Integrated rack solutions
Disaggregation of Revenue [Line Items]
Net sales		$ 159.7	$ 150.5	$ 143.7