Revenue (Tables)

12 Months Ended

Dec. 31, 2021

Revenue from Contract with Customer [Abstract]

The following table disaggregates our revenue by product and service offering and timing of transfer of control:


	Year Ended December 31, 2021
	Americas		Asia Pacific		Europe, Middle East, & Africa		Total
Sales by Product and Service Offering:
Critical infrastructure & solutions(1)	$	1,189.6	$	971.7	$	739.1	$	2,900.4
Services & spares	705.1		421.5		312.1		1,438.7
Integrated rack solutions	292.7		215.8		150.5		659.0
Total	$	2,187.4	$	1,609.0	$	1,201.7	$	4,998.1

Timing of revenue recognition:
Products and services transferred at a point in time	$	1,514.6	$	1,304.3	$	1,019.5	$	3,838.4
Products and services transferred over time	672.8		304.7		182.2		1,159.7
Total	$	2,187.4	$	1,609.0	$	1,201.7	$	4,998.1

(1) For the year ended December 31, 2021, E&I sales from November 1, 2021 to December 31, 2021 of $21.7 and $45.7 are included in Americas; and Europe, Middle East & Africa reportable segments, respectively.


	Year Ended December 31, 2020
	Americas		Asia Pacific		Europe, Middle East, & Africa		Total
Sales by Product and Service Offering: (1)
Critical infrastructure & solutions	$	1,074.2	$	830.7	$	529.7	$	2,434.6
Services & spares	662.6		366.3		288.2		1,317.1
Integrated rack solutions	303.8		171.4		143.7		618.9
Total	$	2,040.6	$	1,368.4	$	961.6	$	4,370.6

Timing of revenue recognition:
Products and services transferred at a point in time	$	1,418.9	$	1,078.5	$	751.9	$	3,249.3
Products and services transferred over time	621.7		289.9		209.7		1,121.3
Total	$	2,040.6	$	1,368.4	$	961.6	$	4,370.6

(1)Comparative results for Critical infrastructure & solutions, Services & spares and Integrated rack solutions for the year ended December 31, 2020 have been adjusted by $(23.1), $(7.7), and $30.8, respectively, to reflect the strategic realignment described above.


	Year Ended December 31, 2019
	Americas		Asia Pacific		Europe, Middle East, & Africa		Total
Sales by Product and Service Offering:
Critical infrastructure & solutions	$	1,225.6	$	755.5	$	486.4	$	2,467.5
Services & spares	689.8		361.1		287.2		1,338.1
Integrated rack solutions	313.7		161.4		150.5		625.6
Total	$	2,229.1	$	1,278.0	$	924.1	$	4,431.2

Timing of revenue recognition:
Products and services transferred at a point in time	$	1,592.4	$	1,007.1	$	748.9	$	3,348.4
Products and services transferred over time	636.7		270.9		175.2		1,082.8
Total	$	2,229.1	$	1,278.0	$	924.1	$	4,431.2

Schedule of Contract Assets, Liabilities and Deferred Revenue

The opening and closing balances of our current and long-term contract liabilities and current and long-term deferred revenue are as follows:


	Balances at December 31, 2021		Balances at December 31, 2020

Deferred revenue - current (1)	$	238.9	$	199.6
Deferred revenue - noncurrent (2)	59.9		38.8
Other contract liabilities - current (1)	52.1		36.1

(1) Current deferred revenue and contract liabilities are included within accrued expenses.

(2) Noncurrent deferred revenue is recorded within other long-term liabilities.