REVENUE - Disaggregation of Revenue (Details) - USD ($) $ in Millions	2 Months Ended	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Disaggregation of Revenue [Line Items]
Net sales		$ 6,863.2	$ 5,691.5	$ 4,998.1
Operating Segments
Disaggregation of Revenue [Line Items]
Net sales		7,233.1	6,029.1	5,167.4
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		5,038.6	4,153.3	3,838.4
Products and services transferred over time
Disaggregation of Revenue [Line Items]
Net sales		1,824.6	1,538.2	1,159.7
Product And Service Total
Disaggregation of Revenue [Line Items]
Net sales		6,863.2	5,691.5	4,998.1
Critical infrastructure & solutions
Disaggregation of Revenue [Line Items]
Net sales		4,449.1	3,475.3	2,900.4
Services & spares
Disaggregation of Revenue [Line Items]
Net sales		1,592.0	1,480.6	1,438.7
Integrated rack solutions
Disaggregation of Revenue [Line Items]
Net sales		822.1	735.6	659.0
Americas | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales		3,885.2	2,773.0	2,206.4
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		2,932.3	1,925.0	1,514.6
Americas | Products and services transferred over time
Disaggregation of Revenue [Line Items]
Net sales		912.2	803.6	672.8
Americas | Product And Service Total
Disaggregation of Revenue [Line Items]
Net sales		3,844.5	2,728.6	2,187.4
Americas | Critical infrastructure & solutions
Disaggregation of Revenue [Line Items]
Net sales		2,560.5	1,608.4	1,189.6
Americas | Services & spares
Disaggregation of Revenue [Line Items]
Net sales		823.3	754.6	705.1
Americas | Integrated rack solutions
Disaggregation of Revenue [Line Items]
Net sales		460.7	365.6	292.7
Asia Pacific | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales		1,615.6	1,699.3	1,693.6
Asia Pacific | Products and services transferred at a point in time
Disaggregation of Revenue [Line Items]
Net sales		1,163.9	1,242.6	1,304.3
Asia Pacific | Products and services transferred over time
Disaggregation of Revenue [Line Items]
Net sales		363.9	358.7	304.7
Asia Pacific | Product And Service Total
Disaggregation of Revenue [Line Items]
Net sales		1,527.8	1,601.3	1,609.0
Asia Pacific | Critical infrastructure & solutions
Disaggregation of Revenue [Line Items]
Net sales		911.4	949.3	971.7
Asia Pacific | Services & spares
Disaggregation of Revenue [Line Items]
Net sales		429.7	441.7	421.5
Asia Pacific | Integrated rack solutions
Disaggregation of Revenue [Line Items]
Net sales		186.7	210.3	215.8
Europe, Middle East, & Africa | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales		1,732.3	1,556.8	1,267.4
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		942.4	985.7	1,019.5
Europe, Middle East, & Africa | Products and services transferred over time
Disaggregation of Revenue [Line Items]
Net sales		548.5	375.9	182.2
Europe, Middle East, & Africa | Product And Service Total
Disaggregation of Revenue [Line Items]
Net sales		1,490.9	1,361.6	1,201.7
Europe, Middle East, & Africa | Critical infrastructure & solutions
Disaggregation of Revenue [Line Items]
Net sales		977.2	917.6	739.1
Europe, Middle East, & Africa | Services & spares
Disaggregation of Revenue [Line Items]
Net sales		339.0	284.3	312.1
Europe, Middle East, & Africa | Integrated rack solutions
Disaggregation of Revenue [Line Items]
Net sales		$ 174.7	$ 159.7	$ 150.5