CDW (CDW) 10-Q 1 May 24 2024 Q1 Quarterly report Financial data

Cover Page

Cover Page - shares	3 Months Ended
	Mar. 31, 2024	Apr. 26, 2024
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2024
Document Transition Report	false
Entity File Number	001-35985
Entity Registrant Name	CDW CORP
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	26-0273989
Entity Address, Address Line One	200 N. Milwaukee Avenue
Entity Address, City or Town	Vernon Hills
Entity Address, State or Province	IL
Entity Address, Postal Zip Code	60061
City Area Code	847
Local Phone Number	465-6000
Title of 12(b) Security	Common stock, par value $0.01 per share
Trading Symbol	CDW
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		134,397,680
Entity Central Index Key	0001402057
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q1
Amendment Flag	false

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 803.8	$ 588.7
Accounts receivable, net of allowance for credit losses of $30.2 and $28.8, respectively	4,310.4	4,567.5
Merchandise inventory	670.8	668.1
Miscellaneous receivables	482.2	470.5
Prepaid expenses and other	366.6	410.2
Total current assets	6,633.8	6,705
Operating lease right-of-use assets	135.1	128.8
Property and equipment, net	190.2	195.5
Goodwill	4,409.8	4,413.4
Other intangible assets, net	1,331.2	1,369.7
Other assets	492.7	472.2
Total Assets	13,192.8	13,284.6
Current liabilities:
Accounts payable-trade	2,741.1	2,881
Accounts payable-inventory financing	384.8	430.9
Current maturities of long-term debt	604.7	613.1
Contract liabilities	469.5	487.4
Accrued expenses and other current liabilities:
Compensation	250.7	303
Advertising	136	119.9
Sales and income taxes	110.1	52.4
Other	564.1	554.3
Total current liabilities	5,261	5,442
Long-term liabilities:
Debt	5,027.6	5,031.8
Deferred income taxes	161.7	171.4
Operating lease liabilities	167.5	164
Other liabilities	436.3	432.9
Total long-term liabilities	5,793.1	5,800.1
Commitments and contingencies (Note 9)
Stockholders’ equity:
Preferred stock, $0.01 par value, 100.0 shares authorized; no shares issued or outstanding for both periods	0	0
Common stock, $0.01 par value, 1,000.0 shares authorized; 134.4 and 134.1 shares outstanding, respectively	1.3	1.3
Paid-in capital	3,745	3,691.3
Accumulated deficit	(1,474.2)	(1,525.5)
Accumulated other comprehensive loss	(133.4)	(124.6)
Total stockholders’ equity	2,138.7	2,042.5
Total Liabilities and Stockholders’ Equity	$ 13,192.8	$ 13,284.6

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Statement of Financial Position [Abstract]
Allowance for credit loss, current	$ 30.2	$ 28.8
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, authorized (in shares)	100,000,000	100,000,000
Preferred stock, issued (in shares)	0	0
Preferred stock, outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	1,000,000,000	1,000,000,000
Common stock, shares outstanding (in shares)	134,400,000	134,100,000

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Income Statement [Abstract]
Net sales	$ 4,872.7	$ 5,103.1
Cost of sales	3,809.4	4,013.7
Gross profit	1,063.3	1,089.4
Selling and administrative expenses	735.3	734.1
Operating income	328	355.3
Interest expense, net	(51.3)	(57.7)
Other expense, net	(0.1)	(1.3)
Income before income taxes	276.6	296.3
Income tax expense	(60.5)	(66.2)
Net income	$ 216.1	$ 230.1
Net income per common share:
Basic (in dollars per share)	$ 1.61	$ 1.70
Diluted (in dollars per share)	$ 1.59	$ 1.68
Weighted-average common shares outstanding:
Basic (in shares)	134.4	135.6
Diluted (in shares)	136	137.3

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 216.1	$ 230.1
Other comprehensive income (loss), net of tax:
Unrealized gain from cash flow hedge	1.8	0
Foreign currency translation adjustments	(10.6)	9.6
Other comprehensive (loss) income	(8.8)	9.6
Comprehensive income	$ 207.3	$ 239.7

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Cash flows from operating activities:
Net income	$ 216.1	$ 230.1
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	67.3	70.7
Equity-based compensation expense	19.4	20.8
Deferred income taxes	(10)	(10.9)
Provision for credit losses	4.2	6.2
Other	1.5	3.4
Changes in assets and liabilities:
Accounts receivable	253.5	208.9
Merchandise inventory	(3.7)	22
Other assets	(46)	102.5
Accounts payable-trade	(138.9)	(248.7)
Other liabilities	76.6	(39.6)
Net cash provided by operating activities	440	365.4
Cash flows from investing activities:
Capital expenditures	(29.5)	(31.7)
Acquisitions of businesses, net of cash acquired	(0.2)	(22.5)
Net cash used in investing activities	(29.7)	(54.2)
Cash flows from financing activities:
Repayments of borrowings under revolving credit facility	0	(49.1)
Repayments of long-term debt	0	(50)
Repayments of receivable financing liability	(13.9)	(31.5)
Net change in accounts payable-inventory financing	(46.1)	77.6
Repurchases of common stock	(52.1)	(200)
Proceeds from stock option exercises	28.9	12.8
Payment of incentive compensation plan withholding taxes	(29.9)	(31.6)
Dividend payments	(83.3)	(79.9)
Other	3.8	3.5
Net cash used in financing activities	(192.6)	(348.2)
Effect of exchange rate changes on cash and cash equivalents	(2.6)	1.2
Net increase (decrease) in cash and cash equivalents	215.1	(35.8)
Cash and cash equivalents—beginning of period	588.7	315.2
Cash and cash equivalents—end of period	803.8	279.4
Supplementary disclosure of cash flow information:
Interest paid	(22.5)	(24.9)
Income taxes paid, net	$ (16.8)	$ (21.5)

Consolidated Statement of Stock

Consolidated Statement of Stockholders' Equity - USD ($) shares in Millions, $ in Millions	Total	Common Stock	Paid-in Capital	Accumulated Deficit	Accumulated Other Comprehensive Loss
Beginning balance (in shares) at Dec. 31, 2022		135.5
Beginning balance at Dec. 31, 2022	$ 1,603.3	$ 1.4	$ 3,518.1	$ (1,763.8)	$ (152.4)
Shareholders' Equity (Deficit) [Roll Forward]
Net income	230.1			230.1
Equity-based compensation expense	20.8		20.8
Stock option exercises (in shares)		0.5
Stock option exercises	12.8		12.8
Coworker Stock Purchase Plan	5		5
Repurchases of common stock (in shares)		(1)
Repurchases of common stock	(200)			(200)
Dividends paid	(79.9)		0.6	(80.5)
Incentive compensation plan stock withheld for taxes	(31.6)			(31.6)
Unrealized gain on cash flow hedge	0
Foreign currency translation and other	8.4			(1.2)	9.6
Ending balance (in shares) at Mar. 31, 2023		135
Ending balance at Mar. 31, 2023	1,568.9	$ 1.4	3,557.3	(1,847)	(142.8)
Beginning balance (in shares) at Dec. 31, 2023		134.1
Beginning balance at Dec. 31, 2023	2,042.5	$ 1.3	3,691.3	(1,525.5)	(124.6)
Shareholders' Equity (Deficit) [Roll Forward]
Net income	216.1			216.1
Equity-based compensation expense	19.4		19.4
Stock option exercises (in shares)		0.5
Stock option exercises	28.9		28.9
Coworker Stock Purchase Plan	4.9		4.9
Repurchases of common stock (in shares)		(0.2)
Repurchases of common stock	(52.1)			(52.1)
Dividends paid	(83.3)		0.5	(83.8)
Incentive compensation plan stock withheld for taxes	(29.9)			(29.9)
Unrealized gain on cash flow hedge	1.8				1.8
Foreign currency translation and other	(9.6)			1	(10.6)
Ending balance (in shares) at Mar. 31, 2024		134.4
Ending balance at Mar. 31, 2024	$ 2,138.7	$ 1.3	$ 3,745	$ (1,474.2)	$ (133.4)

Consolidated Statements of Shar

Consolidated Statements of Shareholders' Equity (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Statement of Stockholders' Equity [Abstract]
Dividends (in dollars per share)	$ 0.62	$ 0.59

Description of Business and Sum

Description of Business and Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2024
Accounting Policies [Abstract]
Description of Business and Summary of Significant Accounting Policies	Description of Business and Summary of Significant Accounting Policies Description of Business CDW Corporation (“Parent”), a Fortune 500 company and member of the S&P 500 Index, is a leading multi-brand provider of information technology (“IT”) solutions to small, medium and large business, government, education and healthcare customers in the United States (“US”), the United Kingdom (“UK”) and Canada. The Company’s broad array of offerings ranges from discrete hardware and software products to integrated IT solutions and services that include on-premise and cloud capabilities across hybrid infrastructure, digital experience and security. Throughout this report, the terms the “Company” and “CDW” refer to Parent and its 100% owned subsidiaries. Parent has two 100% owned subsidiaries, CDW LLC and CDW Finance Corporation. CDW LLC is an Illinois limited liability company that, together with its 100% owned subsidiaries, holds all material assets and conducts all business activities and operations of the Company. CDW Finance Corporation is a Delaware corporation formed for the sole purpose of acting as co-issuer of certain debt obligations and does not hold any material assets or engage in any business activities or operations. Basis of Presentation The accompanying unaudited interim Consolidated Financial Statements as of March 31, 2024 and for the three months ended March 31, 2024 and 2023 (the “Consolidated Financial Statements”) have been prepared in conformity with accounting principles generally accepted in the United States of America (“US GAAP”) and the rules and regulations of the US Securities and Exchange Commission (the “SEC”) for interim financial statements. Certain information and footnote disclosures normally included in financial statements prepared in accordance with US GAAP have been condensed or omitted pursuant to the rules and regulations of the SEC. The presentation of the Consolidated Financial Statements requires the Company to make estimates and assumptions that affect reported amounts and related disclosures. In the opinion of management, the Consolidated Financial Statements contain all adjustments (consisting of a normal, recurring nature) necessary to present fairly the Company’s financial position, results of operations, comprehensive income, cash flows and changes in stockholders’ equity as of the dates and for the periods indicated. The unaudited results of operations for such interim periods reported are not necessarily indicative of results for the full year. These Consolidated Financial Statements should be read in conjunction with the audited Consolidated Financial Statements and the notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2023 (the “December 31, 2023 Consolidated Financial Statements”). The significant accounting policies and estimates used in preparing these Consolidated Financial Statements were applied on a basis consistent with those reflected in the December 31, 2023 Consolidated Financial Statements. Principles of Consolidation The Consolidated Financial Statements include the accounts of Parent and its 100% owned subsidiaries. All intercompany transactions and accounts are eliminated in consolidation.

Recent Accounting Pronouncement

Recent Accounting Pronouncements	3 Months Ended
	Mar. 31, 2024
Accounting Standards Update and Change in Accounting Principle [Abstract]
Recent Accounting Pronouncements	Recent Accounting Pronouncements In December 2023, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures. This ASU enhances existing income tax disclosures primarily through standardization and disaggregation of rate reconciliation categories and income taxes paid by jurisdiction. The ASU is effective for all public entities for annual periods beginning after December 15, 2024, with early adoption permitted. Entities should apply the amendments on a prospective basis, but retrospective application is permitted. The Company is currently evaluating the impact this ASU will have on its disclosures. In November 2023, the FASB issued ASU 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures. This ASU improves reportable segment disclosure requirements, primarily through enhanced disclosures about significant segment expenses included in a segment’s profit or loss measure on an annual and interim basis. The ASU is effective for all public entities for fiscal years beginning after December 15, 2023, and interim

Accounts Receivable and Contrac

Accounts Receivable and Contract Balances	3 Months Ended
	Mar. 31, 2024
Revenue from Contract with Customer [Abstract]
Accounts Receivable and Contract Balances	Accounts Receivable and Contract Balances Accounts Receivable The following table details the total accounts receivable recognized and the related classification on the Consolidated Balance Sheets: March 31, 2024 December 31, 2023 Accounts receivable, current (1) $ 4,310.4 $ 4,567.5 Accounts receivable, noncurrent (2) 405.1 337.5 Total accounts receivable $ 4,715.5 $ 4,905.0 (1) Accounts receivable, current are presented within Accounts receivable, net of allowance for credit losses on the Consolidated Balance Sheets. (2) Accounts receivable, noncurrent are presented within Other assets on the Consolidated Balance Sheets. From time to time, the Company transfers certain accounts receivable, without recourse, to third-party financial companies as a method to reduce the Company’s credit exposure and accelerate cash collections. Such transfers are recognized as a sale and the related accounts receivable is derecognized from the Consolidated Balance Sheet upon receipt of payment from the third-party financing company. During the three months ended March 31, 2024 and 2023, the Company sold approximately $93 million and $124 million of accounts receivable, respectively. Contract Balances Contract assets and liabilities represent the difference in the timing of revenue recognition from receipt of cash from customers. Contract assets represent revenue recognized on performance obligations satisfied or partially satisfied for which the Company has no unconditional right to consideration. Contract liabilities consist of payments received from customers, or such consideration that is contractually due, in advance of providing the product or performing services. The following table details information about the Company’s contract balances recognized on the Consolidated Balance Sheets: March 31, 2024 December 31, 2023 Contract assets (1) $ 95.5 $ 111.8 Contract liabilities (2)(3) 507.6 527.4 (1) Contract assets are presented within Prepaid expenses and other on the Consolidated Balance Sheets. (2) Includes $38 million and $40 million of long-term contract liabilities that are presented within Other liabilities on the Consolidated Balance Sheets as of March 31, 2024 and December 31, 2023, respectively. (3) During the three months ended March 31, 2024 and 2023, the Company recognized revenue of $175 million and $190 million, respectively, related to its contract liabilities that were included in the beginning balance of the respective periods. A contract’s transaction price is allocated to each distinct performance obligation and recognized as revenue when, or as, the performance obligation is satisfied. The following table represents the total transaction price for the remaining performance obligations as of March 31, 2024 related to non-cancelable contracts longer than 12 months in duration that is expected to be recognized over future periods. Within 1 Year Years 1-2 Years 2-3 Thereafter Remaining performance obligations $ 98.6 $ 56.3 $ 28.4 $ 8.3

Inventory Financing Agreements

Inventory Financing Agreements	3 Months Ended
	Mar. 31, 2024
Inventory Financing Agreements [Abstract]
Inventory Financing Agreements	Inventory Financing Agreements The Company has entered into agreements with financial institutions to facilitate the purchase of inventory from designated suppliers under certain terms and conditions to enhance liquidity. Under these agreements, the Company receives extended payment terms and agrees to pay the financial institutions a stated amount of confirmed invoices from its designated suppliers. The Company does not incur any interest or other incremental expenses associated with these agreements as balances are paid when they are due. Additionally, the Company has no involvement in establishing the terms or conditions of the arrangements between its suppliers and the financial institutions. The amounts outstanding under these agreements as of March 31, 2024 and December 31, 2023 were $385 million and $431 million, respectively, and are separately presented as Accounts payable-inventory financing on the Consolidated Balance Sheets. The majority of such outstanding amounts relates to a floorplan sub-facility that is incorporated in the Company’s Revolving Loan Facility, as defined within Note 6 (Debt). A portion of the Company’s availability under the Revolving Loan Facility is reserved to cover the obligation to pay the financial institution. For additional information regarding the Revolving Loan Facility, see Note 6 (Debt).

Financial Instruments

Financial Instruments	3 Months Ended
	Mar. 31, 2024
Financial Instruments [Abstract]
Financial Instruments	Financial Instruments The Company does not hold or issue derivative financial instruments for trading or speculative purposes. The Company’s indebtedness creates interest rate risk on its variable-rate debt. The Company may use derivative financial instruments to manage its exposure to interest rate risk. For additional information, see Note 6 (Debt). The Company has interest rate collar agreements that provide for a contractually specified interest rate cap and an interest rate floor based on a Secured Overnight Financing Rate (“SOFR”). The Company receives payment from the counterparty if SOFR is greater than the cap or pays the counterparty if SOFR is below the floor. If SOFR is between the floor and cap, no payment is due to either party. There were no new interest rate collar agreements executed during the three months ended March 31, 2024. As of March 31, 2024 and December 31, 2023, the interest rate collar agreements were classified within Long-term liabilities - Other liabilities on the Consolidated Balance Sheets for which the fair value was not material. The total notional amount of the interest rate collar agreements was $400 million as of March 31, 2024 and December 31, 2023, and these agreements mature on September 30, 2026. The fair values of the Company’s interest rate collar agreements are classified as Level 2 in the fair value hierarchy. The valuation of the interest rate collar agreements is derived using a discounted cash flow analysis on the expected cash receipts or cash disbursements that would occur if variable interest rates rise above or fall below the strike rates of the interest rate cap and interest rate floor, respectively. This analysis reflects the contractual terms of the interest rate collar agreements, including the period to maturity, and uses observable market-based inputs, including SOFR curves and implied volatilities. The Company also incorporates insignificant credit valuation adjustments to appropriately reflect the respective counterparty’s nonperformance risk in the fair value measurements. The counterparty credit spreads are based on publicly available credit information obtained from a third-party credit data provider.

Debt

Debt	3 Months Ended
	Mar. 31, 2024
Debt Disclosure [Abstract]
Debt	Debt March 31, 2024 December 31, 2023 Maturity Date Interest Rate Amount Amount Credit Facility Senior unsecured revolving loan facility December 2026 Variable $ — $ — Term Loan Senior unsecured term loan facility December 2026 Variable 634.5 634.5 Unsecured Senior Notes Senior notes due 2024 December 2024 5.500 % 575.0 575.0 Senior notes due 2025 May 2025 4.125 % 600.0 600.0 Senior notes due 2026 December 2026 2.670 % 1,000.0 1,000.0 Senior notes due 2028 April 2028 4.250 % 600.0 600.0 Senior notes due 2028 December 2028 3.276 % 500.0 500.0 Senior notes due 2029 February 2029 3.250 % 700.0 700.0 Senior notes due 2031 December 2031 3.569 % 1,000.0 1,000.0 Total unsecured senior notes 4,975.0 4,975.0 Receivable financing liability 43.3 56.9 Other long-term obligations 5.9 6.9 Unamortized deferred financing fees (26.4) (28.4) Current maturities of long-term debt (604.7) (613.1) Total long-term debt $ 5,027.6 $ 5,031.8 As of March 31, 2024, the Company is in compliance with the covenants under its credit agreements and indentures. Credit Facility The Company has a variable rate senior unsecured revolving loan facility (the “Revolving Loan Facility”) from which it may draw tranches denominated in US dollars, British pounds or Euros. The interest rate is based on SOFR plus a spread adjustment and a margin based on the Company’s senior unsecured rating. The Revolving Loan Facility is used by the Company for borrowings, issuances of letters of credit and floorplan financing. As of March 31, 2024, the Company could have borrowed up to an additional $1.3 billion under the Revolving Loan Facility. As of March 31, 2024, the Revolving Loan Facility had $348 million reserved for the floorplan sub-facility. Term Loan The senior unsecured term loan facility (the “Term Loan Facility”) has a variable interest rate. The interest rate is based on SOFR plus a spread adjustment and a margin based on the Company’s senior unsecured rating. No mandatory payments are required on the remaining principal amount until its maturity date on December 1, 2026. Unsecured Senior Notes The unsecured senior notes have a fixed interest rate, which is paid semi-annually. Receivable Financing The receivable financing liability relates to certain accounts receivable transferred to third-party financial institutions that did not qualify as a sale under the terms of the agreements. While the terms of such agreements are on a nonrecourse basis, the transfers of accounts receivable could not achieve certain criteria that would allow derecognition of the accounts receivable. The proceeds from these arrangements are recognized as a liability and the associated accounts receivable remains on the Consolidated Balance Sheet until the liability is settled. The Company did not execute any transfers under these agreements during the three months ended March 31, 2024. Fair Value The fair values of the unsecured senior notes were estimated using quoted market prices for identical liabilities that are traded in over-the-counter secondary markets. The fair value of the Term Loan Facility was estimated using dealer quotes and other market observable inputs for comparable liabilities. The unsecured senior notes and Term Loan Facility were classified as Level 2 within the fair value hierarchy. The carrying value of the Revolving Loan Facility approximates fair value. The approximate fair values and related carrying values of the Company’s long-term debt, including current maturities and excluding unamortized discount and unamortized deferred financing costs, were as follows: March 31, 2024 December 31, 2023 Fair value $ 5,320.4 $ 5,348.2 Carrying value 5,658.7 5,673.3

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2024
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Income tax expense was $61 million and $66 million for the three months ended March 31, 2024 and 2023, respectively. The effective tax rate, expressed by calculating the income tax expense as a percentage of Income before income taxes, was 21.9% and 22.3% for the three months ended March 31, 2024 and 2023, respectively.

Earnings Per Share

Earnings Per Share	3 Months Ended
	Mar. 31, 2024
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share The numerator for both basic and diluted earnings per share is Net income. The denominator for basic earnings per share is the weighted-average shares outstanding during the period. A reconciliation of basic weighted-average shares outstanding to diluted weighted-average shares outstanding is as follows: Three Months Ended March 31, 2024 2023 Basic weighted-average shares outstanding 134.4 135.6 Effect of dilutive securities (1) 1.6 1.7 Diluted weighted-average shares outstanding (2) 136.0 137.3 (1) The dilutive effect of outstanding stock options, restricted stock units, performance share units and Coworker Stock Purchase Plan units is reflected in the diluted weighted-average shares outstanding using the treasury stock method. (2) There were fewer than 0.2 million potential common shares excluded from diluted weighted-average shares outstanding for both the three months ended March 31, 2024 and 2023. Inclusion of these common shares in diluted weighted-average shares outstanding would have had an anti-dilutive effect.

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2024
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies The Company is party to various legal proceedings that arise in the ordinary course of its business, which include commercial, intellectual property, employment, tort and other litigation matters. The Company is also subject to audit by federal, state, international, national, provincial and local authorities, and by various partners, group purchasing organizations and customers, including government agencies, relating to purchases and sales under various contracts. In addition, the Company is subject to indemnification claims under various contracts. From time to time, certain customers of the Company file voluntary petitions for reorganization or liquidation under the US bankruptcy laws or similar laws of the jurisdictions for the Company’s business activities outside of the US. In such cases, certain pre- petition payments received by the Company could be considered preference items and subject to return to the bankruptcy administrator. As of March 31, 2024, the Company does not believe that there is a reasonable possibility that any material loss exceeding the amounts already recognized for these proceedings and matters, if any, has been incurred. However, the ultimate resolutions of these proceedings and matters are inherently unpredictable. As such, the Company’s Consolidated Financial Statements could be adversely affected in any particular period by the unfavorable resolution of one or more of these proceedings or matters.

Segment Information

Segment Information	3 Months Ended
	Mar. 31, 2024
Segment Reporting [Abstract]
Segment Information	Segment Information The Company’s segment information reflects the way the chief operating decision maker uses internal reporting to evaluate business performance, allocate resources and manage operations. The Company has three reportable segments: Corporate, which is comprised primarily of private sector business customers with more than 250 employees in the US, Small Business, primarily servicing private sector business customers with up to 250 employees in the US, and Public, which is comprised of government agencies and education and healthcare institutions in the US. The Company has two other operating segments: CDW UK and CDW Canada, both of which do not meet the reportable segment quantitative thresholds and, accordingly, are included in an all other category (“Other”). The Company has centralized logistics and headquarters functions that provide services to the segments. The logistics function includes purchasing, distribution and fulfillment services to support the Corporate, Small Business and Public segments. As a result, costs and intercompany charges associated with the logistics function are fully allocated to all of these segments based on a percent of Net sales. The centralized headquarters function provides services in areas such as accounting, information technology, marketing, legal and coworker services. Headquarters function costs that are not allocated to the segments are included under the heading of “Headquarters” in the tables below. 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) 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 Net Sales Percentage 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.

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Pay vs Performance Disclosure
Net income	$ 216.1	$ 230.1

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
	Mar. 31, 2024 shares
Trading Arrangements, by Individual
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false
Sona Chawla [Member]
Trading Arrangements, by Individual
Material Terms of Trading Arrangement	On February 29, 2024, Sona Chawla, Chief Growth and Innovation Officer of the Company, adopted a Rule 10b5-1 trading plan that is intended to satisfy the affirmative defense of Rule 10b5-1(c) under the Exchange Act. Ms. Chawla’s plan provides for the exercise of stock options and sale of up to an aggregate of 51,828 underlying shares of common stock of the Company during the period from May 30, 2024 through February 28, 2025.
Name	Sona Chawla
Title	Chief Growth and Innovation Officer
Rule 10b5-1 Arrangement Adopted	true
Adoption Date	February 29, 2024
Arrangement Duration	274 days
Aggregate Available	51,828

Description of Business and S_2

Description of Business and Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2024
Accounting Policies [Abstract]
Description of Business	Description of Business CDW Corporation (“Parent”), a Fortune 500 company and member of the S&P 500 Index, is a leading multi-brand provider of information technology (“IT”) solutions to small, medium and large business, government, education and healthcare customers in the United States (“US”), the United Kingdom (“UK”) and Canada. The Company’s broad array of offerings ranges from discrete hardware and software products to integrated IT solutions and services that include on-premise and cloud capabilities across hybrid infrastructure, digital experience and security. Throughout this report, the terms the “Company” and “CDW” refer to Parent and its 100% owned subsidiaries. Parent has two 100% owned subsidiaries, CDW LLC and CDW Finance Corporation. CDW LLC is an Illinois limited liability company that, together with its 100% owned subsidiaries, holds all material assets and conducts all business activities and operations of the Company. CDW Finance Corporation is a Delaware corporation formed for the sole purpose of acting as co-issuer of certain debt obligations and does not hold any material assets or engage in any business activities or operations.
Basis of Presentation	Basis of Presentation The accompanying unaudited interim Consolidated Financial Statements as of March 31, 2024 and for the three months ended March 31, 2024 and 2023 (the “Consolidated Financial Statements”) have been prepared in conformity with accounting principles generally accepted in the United States of America (“US GAAP”) and the rules and regulations of the US Securities and Exchange Commission (the “SEC”) for interim financial statements. Certain information and footnote disclosures normally included in financial statements prepared in accordance with US GAAP have been condensed or omitted pursuant to the rules and regulations of the SEC. The presentation of the Consolidated Financial Statements requires the Company to make estimates and assumptions that affect reported amounts and related disclosures. In the opinion of management, the Consolidated Financial Statements contain all adjustments (consisting of a normal, recurring nature) necessary to present fairly the Company’s financial position, results of operations, comprehensive income, cash flows and changes in stockholders’ equity as of the dates and for the periods indicated. The unaudited results of operations for such interim periods reported are not necessarily indicative of results for the full year.
Principles of Consolidation	Principles of Consolidation The Consolidated Financial Statements include the accounts of Parent and its 100% owned subsidiaries. All intercompany transactions and accounts are eliminated in consolidation.
Recent Accounting Pronouncements	Recent Accounting Pronouncements In December 2023, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures. This ASU enhances existing income tax disclosures primarily through standardization and disaggregation of rate reconciliation categories and income taxes paid by jurisdiction. The ASU is effective for all public entities for annual periods beginning after December 15, 2024, with early adoption permitted. Entities should apply the amendments on a prospective basis, but retrospective application is permitted. The Company is currently evaluating the impact this ASU will have on its disclosures. In November 2023, the FASB issued ASU 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures. This ASU improves reportable segment disclosure requirements, primarily through enhanced disclosures about significant segment expenses included in a segment’s profit or loss measure on an annual and interim basis. The ASU is effective for all public entities for fiscal years beginning after December 15, 2023, and interim

Accounts Receivable and Contr_2

Accounts Receivable and Contract Balances (Tables)	3 Months Ended
	Mar. 31, 2024
Revenue from Contract with Customer [Abstract]
Schedule of Accounts Receivable	The following table details the total accounts receivable recognized and the related classification on the Consolidated Balance Sheets: March 31, 2024 December 31, 2023 Accounts receivable, current (1) $ 4,310.4 $ 4,567.5 Accounts receivable, noncurrent (2) 405.1 337.5 Total accounts receivable $ 4,715.5 $ 4,905.0 (1) Accounts receivable, current are presented within Accounts receivable, net of allowance for credit losses on the Consolidated Balance Sheets. (2) Accounts receivable, noncurrent are presented within Other assets on the Consolidated Balance Sheets.
Schedule of Contract with Customer	The following table details information about the Company’s contract balances recognized on the Consolidated Balance Sheets: March 31, 2024 December 31, 2023 Contract assets (1) $ 95.5 $ 111.8 Contract liabilities (2)(3) 507.6 527.4 (1) Contract assets are presented within Prepaid expenses and other on the Consolidated Balance Sheets. (2) Includes $38 million and $40 million of long-term contract liabilities that are presented within Other liabilities on the Consolidated Balance Sheets as of March 31, 2024 and December 31, 2023, respectively. (3) During the three months ended March 31, 2024 and 2023, the Company recognized revenue of $175 million and $190 million, respectively, related to its contract liabilities that were included in the beginning balance of the respective periods.
Schedule of Remaining Performance Obligations	The following table represents the total transaction price for the remaining performance obligations as of March 31, 2024 related to non-cancelable contracts longer than 12 months in duration that is expected to be recognized over future periods. Within 1 Year Years 1-2 Years 2-3 Thereafter Remaining performance obligations $ 98.6 $ 56.3 $ 28.4 $ 8.3

Debt (Tables)

Debt (Tables)	3 Months Ended
	Mar. 31, 2024
Debt Disclosure [Abstract]
Schedule of Long-term Debt Instruments	March 31, 2024 December 31, 2023 Maturity Date Interest Rate Amount Amount Credit Facility Senior unsecured revolving loan facility December 2026 Variable $ — $ — Term Loan Senior unsecured term loan facility December 2026 Variable 634.5 634.5 Unsecured Senior Notes Senior notes due 2024 December 2024 5.500 % 575.0 575.0 Senior notes due 2025 May 2025 4.125 % 600.0 600.0 Senior notes due 2026 December 2026 2.670 % 1,000.0 1,000.0 Senior notes due 2028 April 2028 4.250 % 600.0 600.0 Senior notes due 2028 December 2028 3.276 % 500.0 500.0 Senior notes due 2029 February 2029 3.250 % 700.0 700.0 Senior notes due 2031 December 2031 3.569 % 1,000.0 1,000.0 Total unsecured senior notes 4,975.0 4,975.0 Receivable financing liability 43.3 56.9 Other long-term obligations 5.9 6.9 Unamortized deferred financing fees (26.4) (28.4) Current maturities of long-term debt (604.7) (613.1) Total long-term debt $ 5,027.6 $ 5,031.8
Schedule of Carrying Value of Long-Term Debt	The approximate fair values and related carrying values of the Company’s long-term debt, including current maturities and excluding unamortized discount and unamortized deferred financing costs, were as follows: March 31, 2024 December 31, 2023 Fair value $ 5,320.4 $ 5,348.2 Carrying value 5,658.7 5,673.3

Earnings Per Share (Tables)

Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2024
Earnings Per Share [Abstract]
Schedule of Weighted Average Number of Shares	A reconciliation of basic weighted-average shares outstanding to diluted weighted-average shares outstanding is as follows: Three Months Ended March 31, 2024 2023 Basic weighted-average shares outstanding 134.4 135.6 Effect of dilutive securities (1) 1.6 1.7 Diluted weighted-average shares outstanding (2) 136.0 137.3 (1) The dilutive effect of outstanding stock options, restricted stock units, performance share units and Coworker Stock Purchase Plan units is reflected in the diluted weighted-average shares outstanding using the treasury stock method. (2) There were fewer than 0.2 million potential common shares excluded from diluted weighted-average shares outstanding for both the three months ended March 31, 2024 and 2023. Inclusion of these common shares in diluted weighted-average shares outstanding would have had an anti-dilutive effect.

Segment Information (Tables)

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 Net Sales Percentage 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.

Description of Business and S_3

Description of Business and Summary of Significant Accounting Policies (Details)	Mar. 31, 2024 subsidiary
Accounting Policies [Abstract]
Number of owned subsidiaries	2

Accounts Receivable and Contr_3

Accounts Receivable and Contract Balances - Schedule of Accounts Receivable (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Revenue from Contract with Customer [Abstract]
Accounts receivable, current	$ 4,310.4	$ 4,567.5
Accounts receivable, noncurrent	405.1	337.5
Total accounts receivable	$ 4,715.5	$ 4,905

Accounts Receivable and Contr_4

Accounts Receivable and Contract Balances - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Revenue from Contract with Customer [Abstract]
Accounts receivable, sale	$ 93	$ 124

Accounts Receivable and Contr_5

Accounts Receivable and Contract Balances - Schedule of Contract with Customer (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Contract assets	$ 95.5		$ 111.8
Contract liabilities	507.6		527.4
Revenue recognized from contract with customer	175	$ 190
Long-term Contract with Customer
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Contract liabilities	$ 38		$ 40

Accounts Receivable and Contr_6

Accounts Receivable and Contract Balances - Schedule of Remaining Performance Obligations (Details) $ in Millions	Mar. 31, 2024 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligations, expected timing of satisfaction, period	9 months
Remaining performance obligations	$ 98.6
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligations, expected timing of satisfaction, period	1 year
Remaining performance obligations	$ 56.3
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligations, expected timing of satisfaction, period	1 year
Remaining performance obligations	$ 28.4
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligations, expected timing of satisfaction, period
Remaining performance obligations	$ 8.3

Inventory Financing Agreements

Inventory Financing Agreements (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Inventory Financing Agreements [Abstract]
Accounts payable-inventory financing	$ 384.8	$ 430.9

Financial Instruments - (Detail

Financial Instruments - (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Interest Rate Cap
Derivative [Line Items]
Notional amount	$ 400	$ 400

Debt - Debt Balances and Intere

Debt - Debt Balances and Interest Rates (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Long-term debt	$ 5,658.7	$ 5,673.3
Unamortized deferred financing fees	(26.4)	(28.4)
Current maturities of long-term debt	(604.7)	(613.1)
Total long-term debt	5,027.6	5,031.8
Senior unsecured revolving loan facility
Debt Instrument [Line Items]
Long-term debt	0	0
Senior unsecured term loan facility
Debt Instrument [Line Items]
Long-term debt	634.5	634.5
Total unsecured senior notes
Debt Instrument [Line Items]
Long-term debt	$ 4,975	4,975
Senior notes due 2024
Debt Instrument [Line Items]
Interest rate in effect	5.50%
Long-term debt	$ 575	575
Senior notes due 2025
Debt Instrument [Line Items]
Interest rate in effect	4.125%
Long-term debt	$ 600	600
Senior notes due 2026
Debt Instrument [Line Items]
Interest rate in effect	2.67%
Long-term debt	$ 1,000	1,000
Senior notes due 2028
Debt Instrument [Line Items]
Interest rate in effect	4.25%
Long-term debt	$ 600	600
Senior notes due 2028
Debt Instrument [Line Items]
Interest rate in effect	3.276%
Long-term debt	$ 500	500
Senior notes due 2029
Debt Instrument [Line Items]
Interest rate in effect	3.25%
Long-term debt	$ 700	700
Senior notes due 2031
Debt Instrument [Line Items]
Interest rate in effect	3.569%
Long-term debt	$ 1,000	1,000
Receivable financing liability
Debt Instrument [Line Items]
Long-term debt	43.3	56.9
Other long-term obligations
Debt Instrument [Line Items]
Long-term debt	$ 5.9	$ 6.9

Debt - Narrative (Details)

Debt - Narrative (Details) - Senior unsecured revolving loan facility $ in Millions	Mar. 31, 2024 USD ($)
Debt Instrument [Line Items]
Additional borrowing capacity	$ 1,300
Accounts Payable, Inventory Financing
Debt Instrument [Line Items]
Amount owed under Revolving loan financing agreement	$ 348

Debt - Fair Value of Long-Term

Debt - Fair Value of Long-Term Debt (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying value	$ 5,658.7	$ 5,673.3
Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value	$ 5,320.4	$ 5,348.2

Income Taxes - Narrative (Detai

Income Taxes - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Income Tax Disclosure [Abstract]
Income tax expense	$ 60.5	$ 66.2
Effective income tax rate reconciliation, percent	21.90%	22.30%

Earnings Per Share (Details)

Earnings Per Share (Details) - shares shares in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Earnings Per Share [Abstract]
Basic weighted-average shares outstanding (in shares)	134.4	135.6
Effect of dilutive securities (in shares)	1.6	1.7
Diluted weighted-average shares outstanding (in shares)	136	137.3
Anti-dilutive shares (fewer than) (in shares)	0.2	0.2

Segment Information - Narrative

Segment Information - Narrative (Details)	3 Months Ended
	Mar. 31, 2024 employee segment
Segment Reporting Information [Line Items]
Number of reportable segments | segment	3
Number of operating segments which do not meet reportable unit quantitative threshold | segment	2
Minimum | Corporate
Segment Reporting Information [Line Items]
Customer segments, customer employee headcount | employee	250
Maximum | Small Business
Segment Reporting Information [Line Items]
Customer segments, customer employee headcount | employee	250

Segment Information - Schedule

Segment Information - Schedule of Segment Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Segment Reporting Information [Line Items]
Net sales	$ 4,872.7	$ 5,103.1
Operating income (loss)	328	355.3
Depreciation and amortization expense	(67.3)	(70.7)
Operating Segments | Corporate
Segment Reporting Information [Line Items]
Net sales	2,135.9	2,203.7
Operating income (loss)	178	193.3
Depreciation and amortization expense	(19.8)	(22.8)
Operating Segments | Small Business
Segment Reporting Information [Line Items]
Net sales	380.9	411.4
Operating income (loss)	46.5	41.5
Depreciation and amortization expense	(1)	(1.3)
Operating Segments | Public
Segment Reporting Information [Line Items]
Net sales	1,724.7	1,812.8
Operating income (loss)	126	127.5
Depreciation and amortization expense	(13.4)	(16.2)
Operating Segments | Other
Segment Reporting Information [Line Items]
Net sales	631.2	675.2
Operating income (loss)	25.3	36.5
Depreciation and amortization expense	(7.1)	(7.8)
Headquarters
Segment Reporting Information [Line Items]
Net sales	0	0
Operating income (loss)	(47.8)	(43.5)
Depreciation and amortization expense	$ (26)	$ (22.6)

Segment Information - Schedul_2

Segment Information - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Disaggregation of Revenue [Line Items]
Net sales	$ 4,872.7	$ 5,103.1
Percentage of Total Net Sales	100%	100%
Corporate | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	$ 2,135.9	$ 2,203.7
Small Business | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	380.9	411.4
Public | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,724.7	1,812.8
Other | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	631.2	675.2
Transferred at a point in time where CDW is principal
Disaggregation of Revenue [Line Items]
Net sales	4,168.8	4,425.8
Transferred at a point in time where CDW is principal | Corporate | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,779.3	1,861.4
Transferred at a point in time where CDW is principal | Small Business | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	331.7	365.3
Transferred at a point in time where CDW is principal | Public | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,515.7	1,608.6
Transferred at a point in time where CDW is principal | Other | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	542.1	590.5
Transferred at a point in time where CDW is agent
Disaggregation of Revenue [Line Items]
Net sales	373.3	352.1
Transferred at a point in time where CDW is agent | Corporate | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	194.8	185.4
Transferred at a point in time where CDW is agent | Small Business | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	39.1	36.8
Transferred at a point in time where CDW is agent | Public | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	108.2	101.5
Transferred at a point in time where CDW is agent | Other | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	31.2	28.4
Transferred over time where CDW is principal
Disaggregation of Revenue [Line Items]
Net sales	330.6	325.2
Transferred over time where CDW is principal | Corporate | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	161.8	156.9
Transferred over time where CDW is principal | Small Business | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	10.1	9.3
Transferred over time where CDW is principal | Public | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	100.8	102.7
Transferred over time where CDW is principal | Other | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	57.9	56.3
Corporate
Disaggregation of Revenue [Line Items]
Net sales	2,135.9	2,203.7
Corporate | Corporate | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	2,135.9	2,203.7
Corporate | Small Business | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	0	0
Corporate | Public | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	0	0
Corporate | Other | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	0	0
Small Business
Disaggregation of Revenue [Line Items]
Net sales	380.9	411.4
Small Business | Corporate | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	0	0
Small Business | Small Business | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	380.9	411.4
Small Business | Public | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	0	0
Small Business | Other | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	0	0
Government
Disaggregation of Revenue [Line Items]
Net sales	543.3	551.5
Government | Corporate | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	0	0
Government | Small Business | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	0	0
Government | Public | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	543.3	551.5
Government | Other | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	0	0
Education
Disaggregation of Revenue [Line Items]
Net sales	596.8	665.7
Education | Corporate | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	0	0
Education | Small Business | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	0	0
Education | Public | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	596.8	665.7
Education | Other | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	0	0
Healthcare
Disaggregation of Revenue [Line Items]
Net sales	584.6	595.6
Healthcare | Corporate | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	0	0
Healthcare | Small Business | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	0	0
Healthcare | Public | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	584.6	595.6
Healthcare | Other | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	0	0
Other
Disaggregation of Revenue [Line Items]
Net sales	631.2	675.2
Other | Corporate | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	0	0
Other | Small Business | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	0	0
Other | Public | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	0	0
Other | Other | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	631.2	675.2
Hardware
Disaggregation of Revenue [Line Items]
Net sales	$ 3,546.1	$ 3,688.2
Percentage of Total Net Sales	72.80%	72.30%
Hardware | Corporate | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	$ 1,465.6	$ 1,519.4
Hardware | Small Business | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	300	334.7
Hardware | Public | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,316.4	1,362.5
Hardware | Other | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	464.1	471.6
Notebooks/Mobile Devices
Disaggregation of Revenue [Line Items]
Net sales	$ 1,141.3	$ 1,064.6
Percentage of Total Net Sales	23.40%	20.90%
Netcomm Products
Disaggregation of Revenue [Line Items]
Net sales	$ 569.9	$ 744.5
Percentage of Total Net Sales	11.70%	14.60%
Collaboration
Disaggregation of Revenue [Line Items]
Net sales	$ 415.3	$ 476
Percentage of Total Net Sales	8.50%	9.30%
Data Storage and Servers
Disaggregation of Revenue [Line Items]
Net sales	$ 540.6	$ 541.9
Percentage of Total Net Sales	11.10%	10.60%
Desktops
Disaggregation of Revenue [Line Items]
Net sales	$ 258.4	$ 257.9
Percentage of Total Net Sales	5.30%	5.10%
Other Hardware
Disaggregation of Revenue [Line Items]
Net sales	$ 620.6	$ 603.3
Percentage of Total Net Sales	12.80%	11.80%
Software
Disaggregation of Revenue [Line Items]
Net sales	$ 874.4	$ 944.7
Percentage of Total Net Sales	17.90%	18.50%
Software | Corporate | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	$ 437.5	$ 453
Software | Small Business | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	59.9	56.2
Software | Public | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	276.9	301.5
Software | Other | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	100.1	134
Services
Disaggregation of Revenue [Line Items]
Net sales	$ 425.8	$ 442.1
Percentage of Total Net Sales	8.70%	8.70%
Services | Corporate | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	$ 218	$ 215.5
Services | Small Business | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	16.6	15.7
Services | Public | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	127	144.4
Services | Other | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	64.2	66.5
Other
Disaggregation of Revenue [Line Items]
Net sales	$ 26.4	$ 28.1
Percentage of Total Net Sales	0.60%	0.50%
Other | Corporate | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	$ 14.8	$ 15.8
Other | Small Business | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	4.4	4.8
Other | Public | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	4.4	4.4
Other | Other | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	2.8	3.1
United States
Disaggregation of Revenue [Line Items]
Net sales	4,220.6	4,429.9
United States | Corporate | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	2,115.9	2,199.2
United States | Small Business | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	376	409.6
United States | Public | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,722.8	1,812.6
United States | Other | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	5.9	8.5
Rest of World
Disaggregation of Revenue [Line Items]
Net sales	652.1	673.2
Rest of World | Corporate | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	20	4.5
Rest of World | Small Business | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	4.9	1.8
Rest of World | Public | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1.9	0.2
Rest of World | Other | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	$ 625.3	$ 666.7