Segment Information (Tables)

3 Months Ended

Mar. 31, 2024

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment

Information about the Company’s segments is as follows:

	Corporate		Small Business		Public		Other		Headquarters		Total
Three Months Ended March 31, 2024
Net sales	$	2,135.9	$	380.9	$	1,724.7	$	631.2	$	—	$	4,872.7
Operating income (loss)	178.0		46.5		126.0		25.3		(47.8)		328.0
Depreciation and amortization expense	(19.8)		(1.0)		(13.4)		(7.1)		(26.0)		(67.3)
Three Months Ended March 31, 2023
Net sales	$	2,203.7	$	411.4	$	1,812.8	$	675.2	$	—	$	5,103.1
Operating income (loss)	193.3		41.5		127.5		36.5		(43.5)		355.3
Depreciation and amortization expense	(22.8)		(1.3)		(16.2)		(7.8)		(22.6)		(70.7)

Schedule of Disaggregation of Revenue

Geographic Areas and Revenue Mix

	Three Months Ended March 31, 2024
	Corporate		Small Business		Public		Other		Total
Geography(1)
United States	$	2,115.9	$	376.0	$	1,722.8	$	5.9	$	4,220.6
Rest of World	20.0		4.9		1.9		625.3		652.1
Total Net sales	$	2,135.9	$	380.9	$	1,724.7	$	631.2	$	4,872.7
Major Product and Services
Hardware	$	1,465.6	$	300.0	$	1,316.4	$	464.1	$	3,546.1
Software	437.5		59.9		276.9		100.1		874.4
Services	218.0		16.6		127.0		64.2		425.8
Other(2)	14.8		4.4		4.4		2.8		26.4
Total Net sales	$	2,135.9	$	380.9	$	1,724.7	$	631.2	$	4,872.7
Sales by Channel
Corporate	$	2,135.9	$	—	$	—	$	—	$	2,135.9
Small Business	—		380.9		—		—		380.9
Government	—		—		543.3		—		543.3
Education	—		—		596.8		—		596.8
Healthcare	—		—		584.6		—		584.6
Other	—		—		—		631.2		631.2
Total Net sales	$	2,135.9	$	380.9	$	1,724.7	$	631.2	$	4,872.7
Timing of Revenue Recognition
Transferred at a point in time where CDW is principal	$	1,779.3	$	331.7	$	1,515.7	$	542.1	$	4,168.8
Transferred at a point in time where CDW is agent	194.8		39.1		108.2		31.2		373.3
Transferred over time where CDW is principal	161.8		10.1		100.8		57.9		330.6
Total Net sales	$	2,135.9	$	380.9	$	1,724.7	$	631.2	$	4,872.7
(1)Net sales by geography is generally based on the ship-to address with the exception of certain services that may be performed at, or on behalf of, multiple locations. Such service arrangements are categorized based on the bill-to address.
(2)Includes items such as delivery charges to customers.

	Three Months Ended March 31, 2023
	Corporate		Small Business		Public		Other		Total
Geography(1)
United States	$	2,199.2	$	409.6	$	1,812.6	$	8.5	$	4,429.9
Rest of World	4.5		1.8		0.2		666.7		673.2
Total Net sales	$	2,203.7	$	411.4	$	1,812.8	$	675.2	$	5,103.1
Major Product and Services
Hardware	$	1,519.4	$	334.7	$	1,362.5	$	471.6	$	3,688.2
Software	453.0		56.2		301.5		134.0		944.7
Services	215.5		15.7		144.4		66.5		442.1
Other(2)	15.8		4.8		4.4		3.1		28.1
Total Net sales	$	2,203.7	$	411.4	$	1,812.8	$	675.2	$	5,103.1
Sales by Channel
Corporate	$	2,203.7	$	—	$	—	$	—	$	2,203.7
Small Business	—		411.4		—		—		411.4
Government	—		—		551.5		—		551.5
Education	—		—		665.7		—		665.7
Healthcare	—		—		595.6		—		595.6
Other	—		—		—		675.2		675.2
Total Net sales	$	2,203.7	$	411.4	$	1,812.8	$	675.2	$	5,103.1
Timing of Revenue Recognition
Transferred at a point in time where CDW is principal	$	1,861.4	$	365.3	$	1,608.6	$	590.5	$	4,425.8
Transferred at a point in time where CDW is agent	185.4		36.8		101.5		28.4		352.1
Transferred over time where CDW is principal	156.9		9.3		102.7		56.3		325.2
Total Net sales	$	2,203.7	$	411.4	$	1,812.8	$	675.2	$	5,103.1
(1)Net sales by geography is generally based on the ship-to address with the exception of certain services that may be performed at, or on behalf of, multiple locations. Such service arrangements are categorized based on the bill-to address.
(2)Includes items such as delivery charges to customers.

The following tables present Net sales by major category for the three months ended March 31, 2024 and 2023. Categories are based upon internal classifications.

	Three Months Ended March 31,
	2024				2023
	Net Sales		Percentage of Total Net Sales		Net Sales		Percentage of Total Net Sales
Hardware:
Notebooks/Mobile Devices	$	1,141.3	23.4	%	$	1,064.6	20.9	%
Netcomm Products	569.9		11.7		744.5		14.6
Collaboration	415.3		8.5		476.0		9.3
Data Storage and Servers	540.6		11.1		541.9		10.6
Desktops	258.4		5.3		257.9		5.1
Other Hardware	620.6		12.8		603.3		11.8
Total Hardware	3,546.1		72.8		3,688.2		72.3
Software(1)	874.4		17.9		944.7		18.5
Services(1)	425.8		8.7		442.1		8.7
Other(2)	26.4		0.6		28.1		0.5
Total Net sales	$	4,872.7	100.0	%	$	5,103.1	100.0	%

(1)Certain software and services revenues are recorded on a net basis as the Company is acting as an agent in the transaction. As a result, the category percentage of net revenues is not representative of the category percentage of gross profits.

(2)Includes items such as delivery charges to customers.