Beacon Roofing Supply (BECN) 10-Q 4 Aug 23 2023 Q2 Quarterly report Financial data

Cover

Cover - shares	6 Months Ended
	Jun. 30, 2023	Jul. 31, 2023
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2023
Document Transition Report	false
Entity File Number	000-50924
Entity Registrant Name	BEACON ROOFING SUPPLY, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	36-4173371
Entity Address, Address Line One	505 Huntmar Park Drive
Entity Address, Address Line Two	Suite 300
Entity Address, City or Town	Herndon
Entity Address, State or Province	VA
Entity Address, Postal Zip Code	20170
City Area Code	571
Local Phone Number	323-3939
Title of 12(b) Security	Common Stock, $0.01 par value
Trading Symbol	BECN
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		63,096,013
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2023
Entity Central Index Key	0001124941

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022	Jun. 30, 2022
Current assets:
Cash and cash equivalents	$ 65.8	$ 67.7	$ 54.6
Accounts receivable, less allowance of $17.0, $17.2 and $18.2 as of June 30, 2023, December 31, 2022 and June 30, 2022, respectively	1,361.7	1,009.1	1,321.7
Inventories, net	1,352.8	1,322.9	1,548.7
Prepaid expenses and other current assets	512.1	417.8	422.6
Total current assets	3,292.4	2,817.5	3,347.6
Property and equipment, net	380.8	337	289.1
Goodwill	1,922.9	1,916.3	1,785.2
Intangibles, net	415.8	447.7	383.4
Operating lease right-of-use assets, net	470.3	467.6	418
Deferred income taxes, net	6.8	9.9	58
Other assets, net	11.3	7.5	1.4
Total assets	6,500.3	6,003.5	6,282.7
Current liabilities:
Accounts payable	1,317.4	821	1,168.9
Accrued expenses	498	448	476.5
Current portion of operating lease liabilities	97.2	94.5	89.7
Current portion of finance lease liabilities	20.4	16.1	10.9
Current portion of long-term debt/obligations	10	10	10
Total current liabilities	1,943	1,389.6	1,756
Borrowings under revolving lines of credit, net	67.5	254.9	461.3
Long-term debt, net	1,603.2	1,606.4	1,609.6
Other long-term liabilities	0.7	0.2	0.6
Operating lease liabilities	385.1	382.1	334.4
Finance lease liabilities	78.9	67	45.3
Total liabilities	4,078.4	3,700.2	4,207.2
Commitments and contingencies (Note 13)
Convertible Preferred Stock (voting); $0.01 par value; aggregate liquidation preference $400.0; 0.4 shares authorized, issued and outstanding as of June 30, 2023, December 31, 2022 and June 30, 2022 (Note 5)	399.2	399.2	399.2
Stockholders’ equity:
Common stock (voting); $0.01 par value; 100.0 shares authorized; 63.4, 64.2 and 65.0 shares issued and outstanding as of June 30, 2023, December 31, 2022 and June 30, 2022, respectively	0.6	0.6	0.6
Undesignated preferred stock; 5.0 shares authorized, none issued or outstanding	0	0	0
Additional paid-in capital	1,208.1	1,187.2	1,123.5
Retained earnings	820.1	728.8	562.8
Accumulated other comprehensive income (loss)	(6.1)	(12.5)	(10.6)
Total stockholders’ equity	2,022.7	1,904.1	1,676.3
Total liabilities and stockholders’ equity	$ 6,500.3	$ 6,003.5	$ 6,282.7

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022	Jun. 30, 2022
Statement of Financial Position [Abstract]
Accounts receivable, allowances	$ (17)	$ (17.2)	$ (18.2)
Convertible preferred stock, par value (us dollar per share)	$ 0.01	$ 0.01	$ 0.01
Convertible preferred stock. aggregate liquidation preference	$ 400	$ 400	$ 400
Convertible preferred stock, shares authorized ( in shares)	400,000	400,000	400,000
Convertible preferred stock, shares issued ( in shares)	400,000	400,000	400,000
Convertible preferred stock, shares outstanding ( in shares)	400,000	400,000	400,000
Common stock (voting), par value (in usd per share)	$ 0.01	$ 0.01	$ 0.01
Common stock (voting), shares authorized ( in shares)	100,000,000	100,000,000	100,000,000
Common Stock (voting), issued ( in shares)	63,400,000	64,200,000	65,000,000
Common Stock (voting), outstanding ( in shares)	63,400,000	64,200,000	65,000,000
Undesignated Preferred Stock, shares authorized ( in shares)	5,000,000	5,000,000	5,000,000
Undesignated Preferred Stock, issued ( in shares)	0	0	0
Undesignated Preferred Stock, outstanding ( in shares)	0	0	0

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Income Statement [Abstract]
Net sales	$ 2,503.7	$ 2,358.2	$ 4,236	$ 4,045.1
Cost of products sold	1,867.5	1,708	3,157.9	2,955.4
Gross profit	636.2	650.2	1,078.1	1,089.7
Operating expense:
Selling, general and administrative	358.7	355.4	697	664.7
Depreciation	21.8	18.9	42.5	36.4
Amortization	21.4	21.5	43.7	42.9
Total operating expense	401.9	395.8	783.2	744
Income (loss) from operations	234.3	254.4	294.9	345.7
Interest expense, financing costs and other, net	26	18.9	53.8	35.5
Income (loss) before provision for income taxes	208.3	235.5	241.1	310.2
Provision for (benefit from) income taxes	54.5	61	62.5	79.9
Net income (loss)	153.8	174.5	178.6	230.3
Reconciliation of net income (loss) to net income (loss) attributable to common stockholders:
Net income (loss)	153.8	174.5	178.6	230.3
Dividends on Preferred Stock	(6)	(6)	(12)	(12)
Undistributed income allocated to participating securities	(19.5)	(20.9)	(21.9)	(26.8)
Net income (loss) attributable to common stockholders	$ 128.3	$ 147.6	$ 144.7	$ 191.5
Weighted-average common stock outstanding:
Basic (in shares)	63.7	68.1	64	69.1
Diluted ( in shares)	65.1	69.5	65.3	70.4
Net income (loss) per share:
Basic (usd per share)	$ 2.02	$ 2.17	$ 2.26	$ 2.77
Diluted (usd per share)	$ 1.97	$ 2.12	$ 2.22	$ 2.72

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 153.8	$ 174.5	$ 178.6	$ 230.3
Other comprehensive income (loss):
Foreign currency translation adjustment	2.5	(3.1)	2.3	(1.6)
Unrealized gain (loss) due to change in fair value of derivative financial instruments, net of tax	7.9	2.6	5.1	10.4
Derivative financial instruments reclassified to earnings, net of tax	(0.8)	0	(1)	0
Other comprehensive income (loss)	9.6	(0.5)	6.4	8.8
Comprehensive income (loss)	$ 163.4	$ 174	$ 185	$ 239.1

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Stockholders' Equity - USD ($) $ in Millions		Total	Common Stock		APIC		Retained Earnings	AOCI	[2]
Beginning Balance at Dec. 31, 2021		$ 1,812.4	$ 0.7		$ 1,148.6	[1]	$ 682.5	$ (19.4)
Balance (in shares) at Dec. 31, 2021			70,400,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Repurchase and retirement of common stock net	[3]	$ (338.1)	$ (0.1)				(338)
Repurchase and retirement of common stock net ( in shares)		(5,800,000)	(5,800,000)	[3]
Net change in equity forward contracts	[3]	$ (50)			(50)
Issuance of common stock, net of shares withheld for taxes		11.8			11.8	[1]
Issuance of common stock, net of shares withheld for taxes ( in shares)			400,000
Stock-based compensation		13.1			13.1	[1]
Other comprehensive income (loss)		8.8						8.8
Net income (loss)		230.3					230.3
Dividends on Preferred Stock		(12)					(12)
Ending Balance at Jun. 30, 2022		1,676.3	$ 0.6		1,123.5	[1]	562.8	(10.6)
Balance (in shares) at Jun. 30, 2022			65,000,000
Beginning Balance at Mar. 31, 2022		1,745.8	$ 0.7		1,135.9	[1]	619.3	(10.1)
Balance (in shares) at Mar. 31, 2022			68,700,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Repurchase and retirement of common stock net	[3]	$ (225.1)	$ (0.1)				(225)
Repurchase and retirement of common stock net ( in shares)		(3,900,000)	(3,900,000)	[3]
Net change in equity forward contracts		$ (25)			(25)	[1]
Issuance of common stock, net of shares withheld for taxes		4.6			4.6	[1]
Issuance of common stock, net of shares withheld for taxes ( in shares)			200,000
Stock-based compensation		8			8	[1]
Other comprehensive income (loss)		(0.5)						(0.5)
Net income (loss)		174.5					174.5
Dividends on Preferred Stock		(6)					(6)
Ending Balance at Jun. 30, 2022		1,676.3	$ 0.6		1,123.5	[1]	562.8	(10.6)
Balance (in shares) at Jun. 30, 2022			65,000,000
Beginning Balance at Dec. 31, 2022		1,904.1	$ 0.6		1,187.2	[1]	728.8	(12.5)
Balance (in shares) at Dec. 31, 2022			64,200,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Repurchase and retirement of common stock net	[3]	$ (75.3)					(75.3)
Repurchase and retirement of common stock net ( in shares)		(1,200,000)	(1,100,000)	[3]
Issuance of common stock, net of shares withheld for taxes		$ 6.6			6.6	[1],[3]
Issuance of common stock, net of shares withheld for taxes ( in shares)			300,000
Stock-based compensation		14.3			14.3	[1],[3]
Other comprehensive income (loss)		6.4						6.4
Net income (loss)		178.6					178.6
Dividends on Preferred Stock		(12)					(12)
Ending Balance at Jun. 30, 2023		2,022.7	$ 0.6		1,208.1	[1]	820.1	(6.1)
Balance (in shares) at Jun. 30, 2023			63,400,000
Beginning Balance at Mar. 31, 2023		1,906.6	$ 0.6		1,197.2	[1]	724.5	(15.7)
Balance (in shares) at Mar. 31, 2023			64,000,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Repurchase and retirement of common stock net	[3]	$ (52.2)					(52.2)
Repurchase and retirement of common stock net ( in shares)		(800,000)	(700,000)	[3]
Issuance of common stock, net of shares withheld for taxes		$ 2.6			2.6	[1]
Issuance of common stock, net of shares withheld for taxes ( in shares)			100,000
Stock-based compensation		8.3			8.3	[1]
Other comprehensive income (loss)		9.6						9.6
Net income (loss)		153.8					153.8
Dividends on Preferred Stock		(6)					(6)
Ending Balance at Jun. 30, 2023		$ 2,022.7	$ 0.6		$ 1,208.1	[1]	$ 820.1	$ (6.1)
Balance (in shares) at Jun. 30, 2023			63,400,000
[1]Additional Paid-in Capital (“APIC”).[2]Accumulated Other Comprehensive Income (Loss) (“AOCI”).[3]See Note 7 for additional information.

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions		6 Months Ended
		Jun. 30, 2023	Jun. 30, 2022
Operating Activities
Net income (loss)		$ 178.6	$ 230.3
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization		86.2	79.3
Stock-based compensation		14.3	13.1
Certain interest expense and other financing costs		1.3	2.6
Gain on sale of fixed assets and other		(9.5)	(2.9)
Deferred income taxes		1.6	0.7
Changes in operating assets and liabilities:
Accounts receivable		(346.5)	(466.1)
Inventories		(19.5)	(385)
Prepaid expenses and other current assets		(87.2)	(47.1)
Accounts payable and accrued expenses		539.2	383.7
Other assets and liabilities		0.2	4.4
Net cash provided by (used in) operating activities		358.7	(187)
Investing Activities
Purchases of property and equipment		(60.3)	(39.8)
Acquisition of business, net		(30.5)	(16.7)
Proceeds from sale of assets		10.7	3
Purchases of investments		(0.9)	0
Net cash provided by (used in) investing activities		(81)	(53.5)
Financing Activities
Borrowings under revolving lines of credit		840.7	1,365.9
Payments under revolving lines of credit		(1,028.8)	(898.1)
Payments under term loan		(5)	(5)
Payments under equipment financing facilities and finance leases		(9.1)	(4.9)
Repurchase and retirement of common stock, net		(72.4)	(338.1)
Advance payment for equity forward contract		0	(50)
Payment of dividends on Preferred Stock		(12)	(12)
Proceeds from issuance of common stock related to equity awards		8.1	12.2
Payment of taxes related to net share settlement of equity awards		(1.5)	(0.4)
Net cash provided by (used in) financing activities		(280)	69.6
Effect of exchange rate changes on cash and cash equivalents		0.4	(0.3)
Net increase (decrease) in cash and cash equivalents		(1.9)	(171.2)
Cash and cash equivalents, beginning of period		67.7	225.8
Cash and cash equivalents, end of period		65.8	54.6
Supplemental Cash Flow Information
Interest		53.4	37.1
Income taxes, net of refunds1	[1]	31.3	57.4
Supplemental Disclosure of Non-Cash Activities
Amounts accrued for repurchases of common stock, inclusive of excise tax		$ 2.9	$ 0
[1]Six months ended June 30, 2022 amount includes $18.6 million related to the transition period from October 1, 2021 to December 31, 2021.

Company Overview

Company Overview	6 Months Ended
	Jun. 30, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Company Overview	Company Overview Beacon Roofing Supply, Inc. (“Beacon” or the “Company”) was incorporated in the state of Delaware on August 22, 1997 and is the largest publicly traded distributor of roofing materials and complementary building products, such as siding and waterproofing, in North America. The Company operates its business primarily under the trade name “Beacon Building Products” and services customers in all 50 states throughout the U.S. and six provinces in Canada. The Company’s material subsidiaries are Beacon Sales Acquisition, Inc. and Beacon Roofing Supply Canada Company.

Summary of Significant Accounti

Summary of Significant Accounting Policies	6 Months Ended
	Jun. 30, 2023
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Basis of Presentation The Company prepared the condensed consolidated financial statements in accordance with U.S. generally accepted accounting principles (“GAAP”) for interim financial information and the requirements of the Securities and Exchange Commission (“SEC”). As permitted under those rules, certain footnotes or other financial information have been condensed or omitted. Certain prior period amounts have been reclassified to conform to current period presentation. The balance sheet as of June 30, 2022 has been presented for a better understanding of the impact of seasonal fluctuations on the Company’s financial condition. The three-month periods ended June 30, 2023 and 2022 each had 64 business days. The six-month periods ended June 30, 2023 and 2022 had 128 and 127 business days, respectively. In management’s opinion, the unaudited condensed consolidated financial statements include all normal and recurring adjustments that are considered necessary for the fair presentation of the Company’s financial position and operating results. The results for the three and six months ended June 30, 2023 are not necessarily indicative of the results to be expected for the twelve months ending December 31, 2023. These unaudited condensed consolidated financial statements should be read in conjunction with the audited Consolidated Financial Statements and Notes thereto contained in the Company’s most recent Annual Report on Form 10-K for the fiscal year ended December 31, 2022. Recent Accounting Pronouncements— Adopted In October 2021, the Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update (“ASU”) 2021-08, “Business Combinations – Accounting for Contract Assets and Contract Liabilities from Contracts with Customers.” The guidance is intended to improve the accounting for acquired revenue contracts with customers in a business combination by addressing diversity in practice. The guidance requires an acquirer to recognize and measure contract assets and liabilities acquired in a business combination in accordance with Topic 606 as if it had originated the contracts, as opposed to at fair value on the acquisition date. The standard became effective for the Company on January 1, 2023 and was applied prospectively to acquisitions occurring after the adoption date. The adoption of this new guidance did not have a material impact on the Company’s financial statements and related disclosures. In March 2020, the FASB issued ASU 2020-04, “Reference Rate Reform (Topic 848), Facilitation of the Effects of Reference Rate Reform on Financial Reporting.” The guidance provides optional practical expedients to ease the potential burden in accounting for contract modifications and hedge accounting related to reference rate reform. The provisions apply only to those transactions that reference LIBOR or another reference rate expected to be discontinued due to reference rate reform. Specifically, entities can elect to not apply certain modification accounting requirements to contracts affected by reference rate reform if certain criteria are met. Also, entities can elect various optional expedients that would allow it to continue to apply hedge accounting for hedging relationships affected by reference rate reform if certain criteria are met. Adoption of the provisions of ASU 2020-04 are optional and expedients may be elected over time as reference rate reform activities occur. Further, in December 2022, the FASB issued ASU 2022-06, “Reference Rate Reform (Topic 848): Deferral of the Sunset Date of Topic 848,” extending the sunset date under Topic 848 from December 31, 2022 to December 31, 2024 to align the temporary accounting relief guidance with the LIBOR cessation date of June 30, 2023. During the three months ended March 31, 2023, the Company adopted the optional relief guidance provided under ASU 2020-04 after entering into a new interest rate swap agreement with a reference rate indexed to SOFR, thereby creating a temporary mismatch in the referenced interest rate index of the Company’s interest rate swap and the hedged variable rate interest payments pursuant to the Company’s Term Loan. See Note 17 for further details of the transaction. The optional expedient did not have a material impact on the Company’s financial statements and related disclosures. Additionally, during the three months ended June 30, 2023, the Company entered into the second amendment to the 2026 ABL, which replaced the reference rate from LIBOR with a Secured Overnight Financing Rate (“Term SOFR”). See Note 11 for further details of the transaction. In connection with this amendment, the Company adopted ASU 2020-04 and elected the debt accounting optional expedient. The optional expedient did not have a material impact on the Company’s financial statements and related disclosures. In July 2023, the Company entered into the second amendment to the 2028 Term Loan, which replaced the reference rate from LIBOR with a Secured Overnight Financing Rate (“Term SOFR”). See Note 11 for further details of the transaction. In connection with this amendment, the Company will elect the debt accounting optional expedient. The Company may also take advantage of other optional relief guidance offered under ASU 2020-04 in the future and will evaluate and disclose the impact of this guidance in the period of election, as well as the nature and reason for doing so. Recent Accounting Pronouncements—Not Yet Adopted There were no recent accounting pronouncements not yet adopted through June 30, 2023 that are applicable to the Company except as discussed in ASU 2020-04 above.

Acquisitions

Acquisitions	6 Months Ended
	Jun. 30, 2023
Business Combination and Asset Acquisition [Abstract]
Acquisitions	Acquisitions The following table presents the Company’s acquisitions between January 1, 2022 and June 30, 2023. The Company acquired 100% of the equity or substantially all of the assets in each case. The Company has not provided pro forma results of operations for any of the transactions below, as the transactions individually and in the aggregate for the respective year are not material to the Company. The results of operations for these transactions are included in the Company’s condensed consolidated statements of operations from the date of the acquisition (dollars in millions): Date Acquired Company Name Region Branches Goodwill Recognized 1 Intangible Assets Acquired 1 June 12, 2023 Silver State Building Materials, Inc. Nevada 1 $ 0.5 $ 0.9 March 31, 2023 Al's Roofing Supply, Inc. California 4 $ 3.1 $ 7.1 March 31, 2023 Prince Building Systems, LLC Wisconsin 1 $ 0.1 $ 2.0 January 4, 2023 First Coastal Exteriors, LLC Alabama and Mississippi 2 $ 0.7 $ 1.9 December 30, 2022 Whitney Building Products Massachusetts 1 $ 2.7 $ 2.8 November 1, 2022 Coastal Construction Products Florida, Illinois, Alabama, Georgia, Arkansas, Tennessee, and North Carolina 18 $ 131.9 $ 102.7 June 1, 2022 Complete Supply, Inc. Illinois 1 $ 8.6 $ 4.6 April 29, 2022 Wichita Falls Builders Wholesale, Inc. Texas 1 $ 0.4 $ 0.5 January 1, 2022 Crabtree Siding and Supply Tennessee 1 $ 0.1 $ 0.1 1. For Silver State Building Materials, Inc., Al’s Roofing Supply, Inc., Prince Building Systems, LLC, First Coastal Exteriors, LLC, Whitney Building Products and Coastal Construction Products, the measurement period is still open and amounts are based on provisional estimates of the fair value of assets acquired and liabilities assumed as of June 30, 2023 . In each company’s respective fiscal year prior to being acquired by Beacon, the companies listed above produced aggregate annual sales of approximately $346.1 million. The total transaction costs incurred by the Company for these acquisitions for the three and six months ended June 30, 2023 were $1.2 million and $2.8 million, respectively. Of the $148.1 million of goodwill recognized for these acquisitions, $73.0 million is deductible for tax purposes.

Net Sales

Net Sales	6 Months Ended
	Jun. 30, 2023
Revenue from Contract with Customer [Abstract]
Net Sales	Net Sales The following table presents the Company’s net sales by line of business and geography (in millions): U.S. Canada Total Three Months Ended June 30, 2023 Residential roofing products $ 1,276.1 $ 21.9 $ 1,298.0 Non-residential roofing products 615.7 55.1 670.8 Complementary building products 531.7 3.2 534.9 Total net sales $ 2,423.5 $ 80.2 $ 2,503.7 Three Months Ended June 30, 2022 Residential roofing products $ 1,168.6 $ 27.5 $ 1,196.1 Non-residential roofing products 634.8 47.8 682.6 Complementary building products 476.1 3.4 479.5 Total net sales $ 2,279.5 $ 78.7 $ 2,358.2 Six Months Ended June 30, 2023 Residential roofing products $ 2,120.1 $ 28.0 $ 2,148.1 Non-residential roofing products 1,041.8 79.0 1,120.8 Complementary building products 962.5 4.6 967.1 Total net sales $ 4,124.4 $ 111.6 $ 4,236.0 Six Months Ended June 30, 2022 Residential roofing products $ 2,004.4 $ 38.2 $ 2,042.6 Non-residential roofing products 1,092.2 78.1 1,170.3 Complementary building products 826.9 5.3 832.2 Total net sales $ 3,923.5 $ 121.6 $ 4,045.1

Net Income (Loss) Per Share

Net Income (Loss) Per Share	6 Months Ended
	Jun. 30, 2023
Earnings Per Share [Abstract]
Net Income (Loss) Per Share	Net Income (Loss) Per Share Basic net income (loss) per share is calculated by dividing net income (loss) attributable to common stockholders by the weighted-average number of common shares outstanding during the period, without consideration for common share equivalents or the conversion of Preferred Stock (as defined below). Common share equivalents consist of the incremental common shares issuable upon the exercise of stock options and vesting of restricted stock unit awards. Diluted net income (loss) per common share is calculated by dividing net income (loss) attributable to common stockholders by the fully diluted weighted-average number of common shares outstanding during the period. In connection with the acquisition of Allied Building Products Corp. on January 2, 2018, the Company completed the sale of 400,000 shares of Series A Cumulative Convertible Participating Preferred Stock, par value $0.01 per share (the “Preferred Stock”), with an aggregate liquidation preference of $400.0 million, at a purchase price of $1,000 per share, to CD&R Boulder Holdings, L.P. (“CD&R Holdings”). On July 6, 2023, the Company reached an agreement with Clayton, Dubilier & Rice, LLC (“CD&R”) to repurchase all 400,000 issued and outstanding shares of Preferred Stock held by CD&R’s affiliate, CD&R Holdings, with such transaction completed on July 31, 2023. Refer to Note 18 for further details regarding this transaction. Before such repurchase occurred, the Preferred Stock was convertible perpetual participating preferred stock of the Company, and conversion of the Preferred Stock into $0.01 par value shares of the Company’s common stock would have been at a conversion price of $41.26 per share (or 9,694,619 shares of common stock). The Preferred Stock accumulated dividends at a rate of 6.0% per annum (payable quarterly in cash or in-kind, subject to certain conditions). The Preferred Stock was not mandatorily redeemable; therefore, it was classified as mezzanine equity in the Company’s condensed consolidated balance sheets. Holders of Preferred Stock would have participated in dividends on an as-converted basis if declared on common shares. As a result, Preferred Stock was classified as a participating security and thereby required the allocation of income that would have otherwise been available to common stockholders when calculating net income (loss) per share. Diluted net income (loss) per share is calculated by utilizing the most dilutive result of the if-converted and two-class methods. In both methods, net income (loss) attributable to common stockholders and the weighted-average common shares outstanding are adjusted to account for the impact of the assumed issuance of potential common shares that are dilutive, subject to dilution sequencing rules. The following table presents the components and calculations of basic and diluted net income (loss) per share (in millions, except per share amounts; certain amounts may not recalculate due to rounding): Three Months Ended June 30, Six Months Ended June 30, 2023 2022 2023 2022 Numerator: Net income (loss) $ 153.8 $ 174.5 $ 178.6 $ 230.3 Dividends on Preferred Stock (6.0) (6.0) (12.0) (12.0) Undistributed income allocated to participating securities (19.5) (20.9) (21.9) (26.8) Net income (loss) attributable to common stockholders – Basic and Diluted $ 128.3 $ 147.6 $ 144.7 $ 191.5 Denominator: Weighted-average common shares outstanding – Basic 63.7 68.1 64.0 69.1 Effect of common share equivalents 1.4 1.4 1.3 1.3 Weighted-average common shares outstanding – Diluted 65.1 69.5 65.3 70.4 Net income (loss) per share: Net income (loss) per share – Basic $ 2.02 $ 2.17 $ 2.26 $ 2.77 Net income (loss) per share – Diluted $ 1.97 $ 2.12 $ 2.22 $ 2.72 The following table includes the number of shares that may be dilutive common shares in the future. These shares were not included in the computation of diluted net income (loss) per share because the effect was either anti-dilutive or the requisite performance conditions were not met (in millions): Three Months Ended June 30, Six Months Ended June 30, 2023 2022 2023 2022 Stock options 0.3 0.2 0.3 0.1 Restricted stock units — — 0.1 — Preferred Stock 9.7 9.7 9.7 9.7 Equity forward contract — 0.9 — 0.9

Stock-based Compensation

Stock-based Compensation	6 Months Ended
	Jun. 30, 2023
Share-Based Payment Arrangement [Abstract]
Stock-based Compensation	Stock-based Compensation On December 23, 2019, the Board of Directors of the Company (the “Board”) approved the Beacon Roofing Supply, Inc. Second Amended and Restated 2014 Stock Plan (the “2014 Plan”). On February 11, 2020, the stockholders of the Company approved an additional 4,850,000 shares to be reserved for issuance under the 2014 Plan. The 2014 Plan, which was originally approved by the stockholders on February 12, 2014, provides for discretionary awards of stock options, stock awards, restricted stock units, and stock appreciation rights to selected employees and non-employee directors. The 2014 Plan mandates that all shares underlying lapsed, forfeited, expired, terminated, cancelled and withheld awards, including those from the predecessor plan, be returned to the 2014 Plan and made available for issuance. As of June 30, 2023, there were 2,900,286 shares of common stock available for issuance pursuant to the 2014 Plan. The 2014 Plan is the only plan maintained by the Company pursuant to which equity awards are granted. All unvested employee equity awards contain a “double trigger” change in control mechanism to the extent such employee equity award is continued or assumed after a change in control. If an award is not continued or assumed by a public company in an equitable manner, such award shall become vested immediately prior to a change in control (in the case of a restricted stock unit award with performance conditions at the then-calculable payout percentage for any completed annual performance periods and at 100% for any annual performance periods not yet calculable, and in the case of a restricted stock unit award with market performance conditions at 100% of the award then earned but not then vested). If an award is so continued or assumed, vesting will continue in accordance with the terms of the award, unless there is a qualifying termination (without cause or for good reason) within one-year following the change in control, in which event the award shall immediately become vested (in the case of a restricted stock unit award with performance conditions at the then-calculable payout percentage for any completed annual performance periods and at 100% for any annual performance periods not yet calculable, and in the case of a restricted stock unit award with market performance conditions at 100% of the award then earned but not then vested). Stock Options Non-qualified stock options generally expire 10 years after the grant date and, except under certain conditions, the options are subject to continued employment and vest in three annual installments over the three-year period following the grant date. The fair values of the options granted for the periods presented were estimated on the dates of grants using the Black-Scholes option-pricing model with the following weighted-average assumptions: Six Months Ended June 30, 2023 2022 Risk-free interest rate 4.26 % 1.93 % Expected volatility 49.92 % 48.89 % Expected life (in years) 5.12 5.14 Dividend yield — — The following table summarizes all stock option activity for the six months ended June 30, 2023 (in millions, except per share amounts and time periods): Options Outstanding Weighted-Average Exercise Price Weighted-Average Remaining Contractual Term (Years) Aggregate Intrinsic Value 1 Balance as of December 31, 2022 1.3 $ 38.73 6.0 $ 20.7 Granted 0.1 65.00 Exercised (0.2) 37.99 Canceled/Forfeited (0.0) 49.68 Balance as of June 30, 2023 1.2 $ 41.09 6.2 $ 52.5 Vested and expected to vest after June 30, 2023 1.2 $ 40.76 6.1 $ 52.0 Exercisable as of June 30, 2023 0.9 $ 36.19 5.3 $ 43.4 1. Aggregate intrinsic value represents the difference between the closing fair value of the underlying common stock and the exercise price of outstanding, in-the-money options on the date of measurement. During each of the three months ended June 30, 2023 and 2022, the Company recorded stock-based compensation expense related to stock options of $1.1 million. During the six months ended June 30, 2023 and 2022, the Company recorded stock-based compensation expense related to stock options of $2.0 million and $1.9 million, respectively. As of June 30, 2023, there was $5.9 million of total unrecognized compensation cost related to unvested stock options, which is expected to be recognized over a weighted-average period of 2.0 years. The following table summarizes additional information on stock options (in millions, except per share amounts): Six Months Ended June 30, 2023 2022 Weighted-average fair value per share of stock options granted $ 31.86 $ 26.50 Total grant date fair value of stock options vested $ 1.9 $ 0.2 Total intrinsic value of stock options exercised $ 5.9 $ 7.6 Restricted Stock Units Time-based restricted stock unit (“RSU”) awards granted to employees are subject to continued employment and generally vest on the third anniversary of the grant date. The Company also grants certain RSU awards to management that additionally may contain market or performance conditions. Market conditions are incorporated into the grant date fair value of the management awards with market conditions using a Monte Carlo valuation model. Compensation expense for management awards with market conditions is recognized over the service period and is not reversed if the market condition is not met. For awards with performance conditions, the actual number of awards that will vest can range from 0% to 200% of the original grant amount, depending upon actual Company performance below or above the established performance metric targets. At each reporting date, the Company estimates performance in relation to the defined targets when determining the projected number of management awards with performance conditions that are expected to vest and calculating the related stock-based compensation expense. Management awards with performance conditions are amortized over the service period if, and to the extent that, it is determined that achievement of the performance condition is probable. If awards with market, performance and/or service conditions are forfeited due to failure to achieve performance conditions or failure to satisfy service conditions, any previously recognized expense for such awards is reversed. RSUs granted to non-employee directors are subject to continued service and vest on the first anniversary of the grant date (except under certain conditions). Generally, the common shares underlying the RSUs are not eligible for distribution until the non-employee director’s service on the Board has terminated, and for non-employee director RSU grants made prior to fiscal year 2014, the share distribution date is six months after the director’s termination of service on the Board. Any non-employee directors who have Beacon equity holdings (defined as common stock and outstanding vested equity awards) with a total fair value that is greater than or equal to five times the annual Board cash retainer may elect to have any future RSU grants settle simultaneously with vesting. The following table summarizes all RSU activity for the six months ended June 30, 2023 (in millions, except grant date fair value amounts): RSUs Outstanding Weighted-Average Grant Date Fair Value Balance as of December 31, 2022 1.2 $ 45.60 Granted 0.4 $ 62.98 Released (0.1) $ 45.74 Canceled/Forfeited (0.0) $ 53.40 Balance as of June 30, 2023 1.5 $ 50.13 Vested and expected to vest after June 30, 2023 1 1.6 $ 48.94 1. As of June 30, 2023, outstanding awards with performance conditions were expected to vest at greater than 100% of their original grant amount. During the three months ended June 30, 2023 and 2022, the Company recorded stock-based compensation expense related to RSUs of $7.2 million and $6.9 million, respectively. During the six months ended June 30, 2023 and 2022, the Company recorded stock-based compensation expense related to RSUs of $12.3 million and $11.2 million, respectively. As of June 30, 2023, there was $39.0 million of unrecognized compensation expense related to unvested RSUs (including unrecognized expense for RSUs with performance conditions at their estimated value as of June 30, 2023), which is expected to be recognized over a weighted-average period of 2.2 years. The following table summarizes additional information regarding RSUs (in millions, except per share amounts): Six Months Ended June 30, 2023 2022 Weighted-average fair value per share of RSUs granted $ 62.98 $ 50.94 Total grant date fair value of RSUs vested $ 4.1 $ 2.1 Total intrinsic value of RSUs released $ 5.3 $ 2.0 Employee Stock Purchase Plan On March 20, 2023, the Board adopted the Company’s 2023 Employee Stock Purchase Plan (the “ESPP”), subject to stockholder approval, which was subsequently obtained on May 17, 2023 in conjunction with the 2023 Annual Meeting of Stockholders. The ESPP allows eligible employees to acquire shares of the Company’s common stock through payroll deductions over six-month offering periods. The purchase price per share is equal to 85% of the lesser of (1) the fair market value of a share of the Company’s common stock on the offering date, defined as the first trading day of the offering period, or (2) the fair market value of a share of the Company’s common stock on the purchase date, defined as the last trading day of the offering period; provided that the purchase price is not less than the $0.01 par value per share of the common stock. Participant purchases are limited to a maximum of $12,500 per offering period (or $25,000 per calendar year). The Company is authorized to grant up to 1,000,000 shares of its common stock under the ESPP.

Share Repurchase Program

Share Repurchase Program	6 Months Ended
	Jun. 30, 2023
Equity [Abstract]
Share Repurchase Program	Share Repurchase Program On February 24, 2022, the Company announced a new share repurchase program (the “Repurchase Program”), pursuant to which the Company may purchase up to $500.0 million of its common stock. On February 23, 2023, the Company announced that its Board authorized and approved an increase of the Repurchase Program by approximately $387.9 million, permitting future share repurchases of $500.0 million after considering actual share repurchases as of such re-authorization date. Share repurchases under the Repurchase Program may be made from time to time through various means, including open market purchases (including block trades), privately negotiated transactions, accelerated share repurchase transactions (“ASR”) or through a series of forward purchase agreements, option contracts or similar agreements and contracts (including Rule 10b5-1 plans) adopted by the Company, in each case in accordance with the rules and regulations of the Securities and Exchange Commission, including, if applicable, Rule 10b-18 of the Securities Exchange Act of 1934, as amended. The timing, volume, and nature of share repurchases pursuant to the Repurchase Program are at the discretion of management and may be suspended or discontinued at any time. Shares repurchased under the Repurchase Program are retired immediately and are included in the category of authorized but unissued shares. Direct and incremental costs associated with the Repurchase Program are deferred and included as a component of the purchase price. The excess of the purchase price over the par value of the common shares is reflected in retained earnings. The following table sets forth the Company’s share repurchases (in millions, except per share data): Three Months Ended June 30, Six Months Ended June 30, 2023 2022 2023 2022 Total number of shares repurchased 1 0.8 3.9 1.2 5.8 Amount repurchased 1,2 $ 51.6 $ 250.0 $ 74.8 $ 387.9 Average price per share $ 66.72 $ 57.90 $ 63.82 $ 58.28 1. Total shares repurchased for the three months ended June 30, 2022 includes 406,200 shares received for $25 million of the March 2022 ASR repurchase price that was evaluated as an unsettled equity forward contract indexed to the Company’s common stock as of March 31, 2022. 2. Amount paid for the three and six months ended June 30, 2022 includes $50 million of the June 2022 ASR repurchase price that was evaluated as an unsettled equity forward contract indexed to the Company’s common stock and classified within stockholders’ equity as a reduction to additional paid in capital. The final settlement of the June 2022 ASR occurred in the fourth quarter of 2022 and resulted in the delivery of an additional 1.1 million shares of the Company’s common stock. Share repurchases for the three and six months ended June 30, 2023 were made on the open market through a Rule 10b5-1 repurchase plan. During the three and six months ended June 30, 2023, the Company incurred costs directly attributable to the Repurchase Program of approximately $0.6 million. Share repurchases for the three and six months ended June 30, 2022 were made through a combination of open market transactions as well as through two ASRs. During the three and six months ended June 30, 2022, the Company incurred costs directly attributable to the Repurchase Program of approximately $0.2 million and $0.3 million, respectively. As of June 30, 2023, the Company had approximately $425.3 million available for repurchases remaining under the Repurchase Program.

Prepaid Expenses and Other Curr

Prepaid Expenses and Other Current Assets	6 Months Ended
	Jun. 30, 2023
Other Income and Expenses [Abstract]
Prepaid Expenses and Other Current Assets	Prepaid Expenses and Other Current Assets The following table summarizes the significant components of prepaid expenses and other current assets (in millions): June 30, December 31, June 30, 2023 2022 2022 Vendor rebates $ 413.7 $ 335.9 $ 364.2 Other 98.4 81.9 58.4 Total prepaid expenses and other current assets $ 512.1 $ 417.8 $ 422.6

Goodwill and Intangible Assets

Goodwill and Intangible Assets	6 Months Ended
	Jun. 30, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	Goodwill and Intangible Assets Goodwill The following table sets forth the change in the carrying amount of goodwill during the six months ended June 30, 2023 (in millions): Balance as of December 31, 2022 $ 1,916.3 Acquisitions 6.0 Translation and other adjustments 0.6 Balance as of June 30, 2023 $ 1,922.9 The changes in the carrying amount of goodwill for the six months ended June 30, 2023 were driven primarily by the Company’s recent acquisitions. See Note 3 for additional information. Intangible Assets The intangible asset lives range from 2 to 20 years. The following table summarizes intangible assets by category (in millions, except time periods): June 30, December 31, June 30, Weighted-Average Remaining 2023 2022 2022 Life 1 (Years) Amortizable intangible assets: Customer relationships $ 1,210.2 $ 1,198.1 $ 1,097.5 15.6 Trademarks 4.5 4.5 1.0 1.3 Total amortizable intangible assets 1,214.7 1,202.6 1,098.5 15.5 Accumulated amortization (808.7) (764.7) (724.9) Total amortizable intangible assets, net 406.0 437.9 373.6 Indefinite-lived trademarks 9.8 9.8 9.8 Total intangibles, net $ 415.8 $ 447.7 $ 383.4 1. As of June 30, 2023. Amortization expense relating to the above-listed intangible assets for the three months ended June 30, 2023 and 2022 was $21.4 million and $21.5 million, respectively. Amortization expense relating to the above-listed intangible assets for the six months ended June 30, 2023 and 2022 was $43.7 million and $42.9 million, respectively. The following table summarizes the estimated future amortization expense for intangible assets (in millions): Year Ending December 31, 2023 (July - December) $ 39.7 2024 69.4 2025 56.8 2026 48.2 2027 39.2 Thereafter 152.7 Total future amortization expense $ 406.0

Accrued Expenses

Accrued Expenses	6 Months Ended
	Jun. 30, 2023
Payables and Accruals [Abstract]
Accrued Expenses	Accrued Expenses The following table summarizes the significant components of accrued expenses (in millions): June 30, December 31, June 30, 2023 2022 2022 Inventory $ 229.5 $ 106.9 $ 187.7 Customer rebates 63.3 112.8 56.8 Payroll and employee benefit costs 60.4 118.6 102.4 Selling, general and administrative 106.3 96.0 88.2 Income taxes 35.8 7.8 38.2 Interest and other 2.7 5.9 3.2 Total accrued expenses $ 498.0 $ 448.0 $ 476.5

Financing Arrangements

Financing Arrangements	6 Months Ended
	Jun. 30, 2023
Debt Disclosure [Abstract]
Financing Arrangements	Financing Arrangements The following table summarizes all outstanding debt (presented net of unamortized debt issuance costs) and other financing arrangements (in millions): June 30, December 31, June 30, 2023 2022 2022 Revolving Lines of Credit 2026 ABL: 2026 U.S. Revolver 1 $ 67.5 $ 254.9 $ 455.1 2026 Canada Revolver — — 6.2 Borrowings under revolving lines of credit, net $ 67.5 $ 254.9 $ 461.3 Long-term Debt, net Term Loan: 2028 Term Loan 2 $ 968.3 $ 972.2 $ 975.9 Current portion (10.0) (10.0) (10.0) Long-term borrowings under term loan 958.3 962.2 965.9 Senior Notes: 2026 Senior Notes 3 297.8 297.4 297.1 2029 Senior Notes 4 347.1 346.8 346.6 Long-term borrowings under senior notes 644.9 644.2 643.7 Long-term debt, net $ 1,603.2 $ 1,606.4 $ 1,609.6 1. Effective rate on borrowings of 7.21%, 5.45%, and 2.48% as of June 30, 2023, December 31, 2022 and June 30, 2022, respectively. 2. Interest rate of 7.40%, 6.32% and 3.31% as of June 30, 2023, December 31, 2022 and June 30, 2022, respectively. 3. Interest rate of 4.50% for all periods presented. 4. Interest rate of 4.125% for all periods presented. 2021 Debt Refinancing In May 2021, the Company entered into various financing arrangements to refinance certain debt instruments to take advantage of lower market interest rates for the Company’s fixed rate indebtedness and to extend maturities (the “2021 Debt Refinancing”). The transactions included a new $350.0 million issuance of senior notes (the “2029 Senior Notes”). In addition, the Company entered into a second amended and restated credit agreement for its $1.30 billion asset-based revolving line of credit (the “2026 ABL”), and an amended and restated term loan credit agreement for a term loan of $1.00 billion (the “2028 Term Loan”), which together are defined as the “Senior Secured Credit Facilities.” On May 19, 2021, the Company used the net proceeds from the 2029 Senior Notes offering, together with cash on hand and borrowings under the Senior Secured Credit Facilities, to redeem all $1.30 billion aggregate principal amount outstanding of the Company’s 4.875% Senior Notes due 2025 at a redemption price of 102.438%, to refinance all outstanding borrowings under the Company’s previous term loan, and to pay all related accrued interest, fees and expenses. The Company capitalized debt issuance costs totaling $29.0 million related to the 2029 Senior Notes, 2026 ABL and 2028 Term Loan, which are being amortized over the terms of the financing arrangements. 2029 Senior Notes On May 10, 2021, the Company and certain subsidiaries of the Company as guarantors completed a private offering of $350.0 million aggregate principal amount of 4.125% senior unsecured notes due 2029 at an issue price equal to par. The 2029 Senior Notes mature on May 15, 2029 and bear interest at a rate of 4.125% per annum, payable on May 15 and November 15 of each year, which commenced on November 15, 2021. The 2029 Senior Notes are fully and unconditionally guaranteed, on a joint and several basis, by certain of the Company’s active United States subsidiaries. The 2029 Senior Notes and related subsidiary guarantees were offered and sold in a private transaction exempt from the registration requirements of the Securities Act of 1933, as amended (the “Securities Act”), to qualified institutional buyers in accordance with Rule 144A under the Securities Act and to non-U.S. persons outside of the United States pursuant to Regulation S under the Securities Act. The 2029 Senior Notes and related subsidiary guarantees have not been, and will not be, registered under the Securities Act or the securities laws of any state or other jurisdiction, and may not be offered or sold in the United States absent registration or an applicable exemption from the registration requirements of the Securities Act and other applicable securities laws. As of June 30, 2023, the outstanding balance on the 2029 Senior Notes, net of $2.9 million of unamortized debt issuance costs, was $347.1 million. 2026 ABL On May 19, 2021, the Company entered into a $1.30 billion senior secured asset-based revolving credit facility with Wells Fargo Bank, N.A. and a syndicate of other lenders. The 2026 ABL provides for revolving loan commitments in both the United States in an amount up to $1.25 billion (“2026 U.S. Revolver”) and Canada in an amount up to $50.0 million (“2026 Canada Revolver”) (as such amounts may be reallocated pursuant to the terms of the 2026 ABL). The 2026 ABL has a maturity date of May 19, 2026. The 2026 ABL has various borrowing tranches with an interest rate based, at the Company’s option, on a base rate, plus an applicable margin, or a reserve adjusted LIBOR rate, plus an applicable margin. The applicable margin for borrowings is based on the Company’s quarterly average excess availability as determined by reference to a borrowing base and ranges from 0.25% to 0.75% per annum in the case of base rate borrowings and 1.25% to 1.75% per annum in the case of LIBOR borrowings. The unused commitment fees on the 2026 ABL are 0.20% per annum. On June 6, 2023, the Company entered into Amendment No. 2 to the 2026 ABL (the “2026 ABL Amendment No. 2”) with Wells Fargo Bank, N.A., as administrative agent and collateral agent, and the lenders party thereto. The 2026 ABL Amendment No. 2, among other things, (i) replaces the LIBOR interest rate index and its related borrowing mechanics under the 2026 ABL with a Term SOFR interest rate index and its related borrowing mechanics, and (ii) updates certain other provisions of the 2026 ABL to reflect the transition from LIBOR to Term SOFR. Except as amended by the 2026 ABL Amendment No. 2, the remaining terms of the 2026 ABL remain in full force and effect. The 2026 ABL contains a springing financial covenant that requires a minimum 1.00 : 1.00 Fixed Charge Coverage Ratio (consolidated EBITDA less capital expenditures to fixed charges, each as defined in the 2026 ABL credit agreement) as of the end of each fiscal quarter (in each case, calculated on a trailing four fiscal quarter basis). The covenant would become operative if the Company failed to maintain a specified minimum amount of availability to borrow under the 2026 ABL, which was not applicable to the Company as of June 30, 2023. In addition, the Senior Secured Credit Facilities and the 2029 Senior Notes are subject to negative covenants that, among other things and subject to certain exceptions, limit the Company’s ability and the ability of its restricted subsidiaries to: (i) incur indebtedness (including guarantee obligations); (ii) incur liens; (iii) engage in mergers or other fundamental changes; (iv) dispose of certain property or assets; (v) make certain payments, dividends or other distributions; (vi) make certain acquisitions, investments, loans and advances; (vii) prepay certain indebtedness; (viii) change the nature of their business; (ix) engage in certain transactions with affiliates; (x) engage in sale-leaseback transactions; and (xi) enter into certain other restrictive agreements. The 2026 ABL is secured by a first priority lien over substantially all of the Company’s and each guarantor’s accounts and other receivables, chattel paper, deposit accounts (excluding any such account containing identifiable proceeds of Term Priority Collateral (as defined below)), inventory, and, to the extent related to the foregoing and other ABL Priority Collateral, general intangibles (excluding equity interests in any subsidiary of the Company and all intellectual property), instruments, investment property (but not equity interests in any subsidiary of the Company), commercial tort claims, letters of credit, supporting obligations and letter of credit rights, together with all books, records and documents related to, and all proceeds and products of, the foregoing, subject to certain customary exceptions (the “ABL Priority Collateral”), and a second priority lien over substantially all of the Company’s and each guarantor’s other assets, including all of the equity interests of any subsidiary held by the Company or any guarantor, subject to certain customary exceptions (the “Term Priority Collateral”). Beacon Sales Acquisition, Inc., a Delaware corporation and subsidiary of the Company, is a U.S. Borrower under the 2026 ABL and Beacon Roofing Supply Canada Company, an unlimited liability company organized under the laws of Nova Scotia and subsidiary of the Company, is a Canadian borrower under the 2026 ABL. The 2026 ABL is fully and unconditionally guaranteed, on a joint and several basis, by the Company’s active U.S. subsidiaries. As of June 30, 2023, the outstanding balance on the 2026 ABL, net of $4.8 million of unamortized debt issuance costs, was $67.5 million. The Company also had outstanding standby letters of credit related to the 2026 U.S. Revolver in the amount of $15.7 million as of June 30, 2023. 2028 Term Loan On May 19, 2021, the Company entered into a $1.00 billion senior secured term loan B facility with Citibank, N.A. and a syndicate of other lenders. The 2028 Term Loan requires quarterly principal payments in the amount of $2.5 million, with the remaining outstanding principal to be paid on its May 19, 2028 maturity date. The interest rate is based, at the Company’s option, on a base rate, plus an applicable margin, or a reserve adjusted LIBOR rate, plus an applicable margin. The applicable margin for the 2028 Term Loan ranges, depending on the Company’s consolidated total leverage ratio (consolidated total indebtedness to consolidated EBITDA, each as defined in the 2028 Term Loan credit agreement), from 1.25% to 1.50% per annum in the case of base rate borrowings and 2.25% to 2.50% per annum in the case of LIBOR borrowings. On July 3, 2023, the Company entered into Amendment No. 2 to the 2028 Term Loan (the “2028 Term Loan Amendment No. 2”) with Citibank, N.A., as administrative agent and collateral agent, and the lenders party thereto. The 2028 Term Loan Amendment No. 2, among other things, (i) replaces the LIBOR interest rate index and its related borrowing mechanics under the 2028 Term Loan with a Term SOFR interest rate index and its related borrowing mechanics, and (ii) updates certain other provisions of the 2028 Term Loan to reflect the transition from LIBOR to Term SOFR. Except as amended by the 2028 Term Loan Amendment No. 2, the remaining terms of the 2028 Term Loan remain in full force and effect. The 2028 Term Loan is secured by a shared first-priority lien on the Term Priority Collateral and a shared second-priority lien on the ABL Priority Collateral. Certain excluded assets will not be included in the Term Priority Collateral and the ABL Priority Collateral. The 2028 Term Loan is fully and unconditionally guaranteed, on a joint and several basis, by certain of the Company’s active U.S. subsidiaries. On March 16, 2023, the Company novated and amended its interest rate swap agreement related to the 2028 Term Loan. For additional information, see Note 17. As of June 30, 2023, the outstanding balance on the 2028 Term Loan, net of $11.7 million of unamortized debt issuance costs, was $968.3 million. Other Financing Arrangements 2026 Senior Notes On October 9, 2019, the Company, and certain subsidiaries of the Company as guarantors, completed a private offering of $300.0 million aggregate principal amount of 4.50% Senior Secured Notes due 2026 (the “2026 Senior Notes”) at an issue price equal to par. The 2026 Senior Notes mature on November 15, 2026 and bear interest at a rate of 4.50% per annum, payable on May 15 and November 15 of each year, commencing on May 15, 2020. The 2026 Senior Notes and related subsidiary guarantees are secured by a shared first-priority lien on the Term Priority Collateral and a shared second-priority lien on the ABL Priority Collateral. Certain excluded assets will not be included in the Term Priority Collateral and the ABL Priority Collateral. The 2026 Senior Notes are fully and unconditionally guaranteed, on a joint and several basis, by certain of the Company’s active U.S. subsidiaries. The 2026 Senior Notes and related subsidiary guarantees were offered and sold in a private transaction exempt from the registration requirements of the Securities Act, to qualified institutional buyers in accordance with Rule 144A under the Securities Act and to non-U.S. persons outside of the United States pursuant to Regulation S under the Securities Act. The 2026 Senior Notes and related subsidiary guarantees have not been, and will not be, registered under the Securities Act or the securities laws of any state or other jurisdiction, and may not be offered or sold in the United States absent registration or an applicable exemption from the registration requirements of the Securities Act and other applicable securities laws. On October 28, 2019, the Company used the net proceeds from the offering, together with cash on hand and available borrowings under the Company’s previous asset-based revolving credit facility, to redeem all $300.0 million aggregate principal amount outstanding of the Company’s 6.375% Senior Notes due 2023. The Company capitalized debt issuance costs of $4.7 million related to the 2026 Senior Notes, which are being amortized over the term of the financing arrangements. As of June 30, 2023, the outstanding balance on the 2026 Senior Notes, net of $2.2 million of unamortized debt issuance costs, was $297.8 million. 2030 Senior Notes On July 31, 2023, the Company, and certain subsidiaries of the Company as guarantors, completed a private offering of $600.0 million aggregate principal amount of 6.500% Senior Secured Notes due 2030 (the “2030 Senior Notes”) at an issue price equal to par. The 2030 Senior Notes mature on August 1, 2030 and bear interest at a rate of 6.500% per annum, payable on February 1 and August 1 of each year, commencing on February 1, 2024. The 2030 Senior Notes and related subsidiary guarantees were offered and sold in a private transaction exempt from the registration requirements of the Securities Act, to qualified institutional buyers in accordance with Rule 144A under the Securities Act and to non-U.S. persons outside of the United States pursuant to Regulation S under the Securities Act. The 2030 Senior Notes and related subsidiary guarantees have not been, and will not be, registered under the Securities Act or the securities laws of any state or other jurisdiction, and may not be offered or sold in the United States absent registration or an applicable exemption from the registration requirements of the Securities Act and other applicable securities laws. Due to the 2030 Senior Notes being issued after the quarter end, as of June 30, 2023, there was no outstanding balance on the 2030 Senior Notes. The Company will account for the 2030 Senior Notes as a new debt issuance.

Leases

Leases	6 Months Ended
	Jun. 30, 2023
Leases [Abstract]
Leases	Leases The following table summarizes components of lease costs recognized in the condensed consolidated statements of operations (in millions): Three Months Ended June 30, Six Months Ended June 30, 2023 2022 2023 2022 Operating lease costs $ 30.6 $ 27.3 $ 60.6 $ 54.7 Finance lease costs: Amortization of right-of-use assets 5.2 3.1 9.8 5.8 Interest on lease obligations 1.3 0.5 2.4 1.0 Variable lease costs 3.1 2.2 5.9 4.4 Total lease costs $ 40.1 $ 33.2 $ 78.7 $ 65.9 The following table presents supplemental cash flow information related to the Company’s leases (in millions): Six Months Ended June 30, 2023 2022 Cash paid for amounts included in measurement of lease obligations: Operating cash flows from operating leases $ 57.7 $ 51.7 Operating cash flows from finance leases $ 2.3 $ 0.9 Financing cash flows from finance leases $ 9.1 $ 4.9 Right-of-use assets obtained in exchange for new finance lease liabilities $ 25.3 $ 30.5 Right-of-use assets obtained in exchange for new operating lease liabilities $ 22.5 $ 14.4 As of June 30, 2023, the Company’s operating leases had a weighted-average remaining lease term of 6.1 years and a weighted-average discount rate of 4.79%, and the Company’s finance leases had a weighted-average remaining lease term of 4.7 years and a weighted-average discount rate of 5.47%. The following table summarizes future lease payments as of June 30, 2023 (in millions): Year Ending December 31, Operating Leases Finance Leases 2023 (July - December) $ 59.4 $ 12.6 2024 112.1 25.1 2025 93.7 24.8 2026 80.7 23.3 2027 64.1 18.3 Thereafter 148.2 8.5 Total future lease payments 558.2 112.6 Imputed interest (75.9) (13.3) Total lease liabilities $ 482.3 $ 99.3
Leases	Leases The following table summarizes components of lease costs recognized in the condensed consolidated statements of operations (in millions): Three Months Ended June 30, Six Months Ended June 30, 2023 2022 2023 2022 Operating lease costs $ 30.6 $ 27.3 $ 60.6 $ 54.7 Finance lease costs: Amortization of right-of-use assets 5.2 3.1 9.8 5.8 Interest on lease obligations 1.3 0.5 2.4 1.0 Variable lease costs 3.1 2.2 5.9 4.4 Total lease costs $ 40.1 $ 33.2 $ 78.7 $ 65.9 The following table presents supplemental cash flow information related to the Company’s leases (in millions): Six Months Ended June 30, 2023 2022 Cash paid for amounts included in measurement of lease obligations: Operating cash flows from operating leases $ 57.7 $ 51.7 Operating cash flows from finance leases $ 2.3 $ 0.9 Financing cash flows from finance leases $ 9.1 $ 4.9 Right-of-use assets obtained in exchange for new finance lease liabilities $ 25.3 $ 30.5 Right-of-use assets obtained in exchange for new operating lease liabilities $ 22.5 $ 14.4 As of June 30, 2023, the Company’s operating leases had a weighted-average remaining lease term of 6.1 years and a weighted-average discount rate of 4.79%, and the Company’s finance leases had a weighted-average remaining lease term of 4.7 years and a weighted-average discount rate of 5.47%. The following table summarizes future lease payments as of June 30, 2023 (in millions): Year Ending December 31, Operating Leases Finance Leases 2023 (July - December) $ 59.4 $ 12.6 2024 112.1 25.1 2025 93.7 24.8 2026 80.7 23.3 2027 64.1 18.3 Thereafter 148.2 8.5 Total future lease payments 558.2 112.6 Imputed interest (75.9) (13.3) Total lease liabilities $ 482.3 $ 99.3

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2023
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies The Company is subject to loss contingencies pursuant to various federal, state and local environmental laws and regulations; however, the Company is not aware of any reasonably possible losses that would have a material impact on its results of operations, financial position, or liquidity. Potential environmental loss contingencies include possible obligations to remove or mitigate the effects on the environment of the placement, storage, disposal or release of certain chemical or other substances by the Company or by other parties. Historically, environmental liabilities have not had a material impact on the Company’s results of operations, financial position or liquidity. The Company is subject to litigation and governmental investigations from time to time in the ordinary course of business; however, the Company does not expect the results, if any, to have a material adverse impact on its results of operations, financial position or liquidity. The Company accrues a liability for legal claims when payments associated with the claims become probable and the costs can be reasonably estimated. The Company also considers whether an insurance recovery receivable is applicable and appropriate based on the specific legal claim. The actual costs of resolving legal claims and governmental investigations may be substantially higher or lower than the amounts accrued for those activities. In December 2018, a Company vehicle was involved in an accident that resulted in a fatality. The estate of the decedent and two bystanders filed a lawsuit in October 2019 in the Fourth Judicial District Court for Utah County, Provo Division, against the driver and the Company. Trial was held in late August 2022; the jury determined that the truck driver was not liable for the accident. The plaintiffs filed post-trial motions seeking a judgment as a matter of law or for a new trial. In April 2023, the trial court ruled on the plaintiffs’ motions, granting plaintiffs’ judgment against the driver and ordering that the second phase of the trial proceed. On June 29, 2023, the Utah appeals court granted the Company’s petition for an interlocutory appeal. As the trial court ruling is under appeal, there is not a probable loss with respect to this matter, and any potential loss in regard to this matter is not reasonably estimable. Accordingly, the Company has not accrued any amounts related to this matter within its financial statements as of June 30, 2023.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	6 Months Ended
	Jun. 30, 2023
Equity [Abstract]
Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Income (Loss) Other comprehensive income (loss) is composed of certain gains and losses that are excluded from net income under GAAP and instead recorded as a separate element of stockholders’ equity. The following table summarizes the components of, and changes in, AOCI (in millions): Foreign Currency Translation Derivative Financial Instruments AOCI Balance as of December 31, 2022 $ (22.2) $ 9.7 $ (12.5) Other comprehensive income before reclassifications 2.3 5.1 7.4 Reclassifications out of other comprehensive loss — (1.0) (1.0) Balance as of June 30, 2023 $ (19.9) $ 13.8 $ (6.1) Gains (losses) on derivative instruments are reclassified in the condensed consolidated statements of operations in interest expense, financing costs and other, net in the period in which the hedged transaction affects earnings.

Geographic Data

Geographic Data	6 Months Ended
	Jun. 30, 2023
Segment Reporting [Abstract]
Geographic Data	Geographic Data The following table summarizes certain geographic information (in millions): June 30, December 31, June 30, 2023 2022 2022 Long-lived assets: U.S. $ 786.2 $ 770.6 $ 653.8 Canada 11.9 11.8 10.3 Total long-lived assets $ 798.1 $ 782.4 $ 664.1

Fair Value Measurement

Fair Value Measurement	6 Months Ended
	Jun. 30, 2023
Fair Value Disclosures [Abstract]
Fair Value Measurement	Fair Value Measurement As of June 30, 2023, the carrying amount of cash and cash equivalents, accounts receivable, prepaid and other current assets, accounts payable and accrued expenses approximated fair value because of the short-term nature of these instruments. The Company measures its cash equivalents at amortized cost, which approximates fair value based upon quoted market prices (Level 1). As of June 30, 2023, based upon recent trading prices (Level 2), the fair value of the Company’s $300.0 million 2026 Senior Notes was $285.0 million, and the fair value of the $350.0 million 2029 Senior Notes was $309.8 million.

Financial Derivatives

Financial Derivatives	6 Months Ended
	Jun. 30, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Financial Derivatives	Financial Derivatives The Company uses interest rate derivative instruments to manage the risk related to fluctuating cash flows from interest rate changes by converting a portion of its variable-rate borrowings into fixed-rate borrowings. On September 11, 2019, the Company entered into two interest rate swap agreements to manage the interest rate risk associated with the variable rate on the Company’s previous term loan. Each swap agreement has a notional amount of $250.0 million. As part of the 2021 Debt Refinancing, Beacon refinanced its previous term loan, resulting in the issuance of the 2028 Term Loan; the two interest rate swaps were designed and executed such that they continue to hedge against a total notional amount of $500.0 million related to the refinanced 2028 Term Loan. One agreement (the “5-year swap”) was scheduled to expire on August 30, 2024 and swaps the thirty-day LIBOR with a fixed-rate of 1.49%. The second agreement (the “3-year swap”) expired on August 30, 2022 and swapped the thirty-day LIBOR with a fixed-rate of 1.50%. At the inception of the swap agreements, the Company determined that both swaps qualified for cash flow hedge accounting under ASC 815. Therefore, changes in the fair value of the swaps, net of taxes, were recognized in other comprehensive income each period, then reclassified into the condensed consolidated statements of operations as a component of interest expense, financing costs and other, net in the period in which the hedged transaction affects earnings. On March 16, 2023, the Company novated its 5-year swap agreement to another counterparty and, in connection with such novation, amended the interest rate swap agreement. The amendment changed the index rate from LIBOR to Term SOFR, increased the total notional amount of the interest rate swap to $500.0 million, and extended the termination date to March 31, 2027 (the “2027 interest rate swap”). Specifically, the fixed rate of 1.49% indexed to LIBOR was modified to 3.00% indexed to Term SOFR. The Company used a strategy commonly referred to as “blend and extend” which allows the asset position of the novated 5-year swap agreement of approximately $9.9 million to be effectively blended into the new 2027 interest rate swap agreement. As a result of this transaction, on March 16, 2023, the 5-year swap agreement was de-designated and the unrealized gain of $9.9 million included within accumulated other comprehensive income was frozen and will be ratably reclassified as a reduction to interest expense, financing costs and other, net over the original term of the 5-year swap, or through August 30, 2024 as the hedged transactions affect earnings. Additionally, the 2027 interest rate swap had a fair value of $9.9 million at inception and will be ratably recorded to accumulated other comprehensive income and reclassified to interest expense, financing costs and other, net over the term of the 2027 interest rate swap, or through March 31, 2027 as the hedged transactions affect earnings. At the inception of the 2027 interest rate swap, the Company determined that the swap qualified for cash flow hedge accounting under ASC 815. Therefore, changes in the fair value of the swap, net of taxes, will be recognized in other comprehensive income each period, then reclassified into the condensed consolidated statements of operations as a component of interest expense, financing costs and other, net in the period in which the hedged transaction affects earnings. The 2027 interest rate swap is the only swap agreement outstanding as of June 30, 2023. The effectiveness of the outstanding 2027 interest rate swap will be assessed qualitatively by the Company during the life of the hedge by (i) comparing the current terms of the hedge with the related hedged debt to assure they continue to coincide and (ii) through an evaluation of the ability of the counterparty to the hedge to honor its obligations under the hedge. The Company performed a qualitative analysis as of June 30, 2023 and concluded that the outstanding 2027 interest rate swap continues to meet the requirements under ASC 815 to qualify for cash flow hedge accounting. As of June 30, 2023, the fair value of the 2027 interest rate swap, net of tax, was $14.8 million in favor of the Company. During the three and six months ended June 30, 2023, the Company reclassified a gain of $0.8 million and $1.0 million out of accumulated other comprehensive income and to interest expense, financing costs and other, net, respectively. Approximately $11.0 million of net gains included in accumulated other comprehensive income (loss) at June 30, 2023 is expected to be reclassified into earnings within the next 12 months as interest payments are made on the Company’s Term Loan and amortization of the frozen AOCI on the 5-year swap and inception date fair value of the 2027 interest rate swap occurs. The Company records any differences paid or received on its interest rate hedges to interest expense, financing costs and other, net within the condensed consolidated statements of operations. The fair value of the interest rate swap is determined through the use of a pricing model, which utilizes verifiable inputs such as market interest rates that are observable at commonly quoted intervals (generally referred to as the “forward curve”) for the full terms of the hedge agreements. These values reflect a Level 2 measurement under the applicable fair value hierarchy. The following table summarizes the combined fair values, net of tax, of the interest rate derivative instrument (in millions): Net Assets (Liabilities) as of June 30, December 31, June 30, Instrument Fair Value Hierarchy 2023 2022 2022 Designated interest rate swaps 1 Level 2 $ 14.8 $ 9.7 $ 6.3 1. Assets are included in the condensed consolidated balance sheets in prepaid expenses and other current assets, while liabilities are included in accrued expenses. The following table summarizes the amounts of gain (loss) on the change in fair value of the designated interest rate swaps recognized in other comprehensive income (in millions): Three Months Ended June 30, Six Months Ended June 30, Instrument 2023 2022 2023 2022 Designated interest rate swaps $ 7.9 $ 2.6 $ 5.1 $ 10.4

Subsequent Events

Subsequent Events	6 Months Ended
	Jun. 30, 2023
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events On July 31, 2023 (the “Repurchase Date”), the Company repurchased (the “Repurchase”) all 400,000 issued and outstanding shares of the Preferred Stock, held by CD&R’s affiliate, CD&R Holdings (the shares of Preferred Stock held by CD&R Holdings, the “Shares”), pursuant to a letter agreement dated July 6, 2023 (the “Repurchase Letter Agreement”). On the Repurchase Date, the Company repurchased the Shares in cash for $805.4 million, including $0.9 million of accrued but unpaid dividends as of the Repurchase Date (the “Repurchase Price”). In connection with the Repurchase, CD&R Holdings agreed that for as long as Philip Knisely or Nathan Sleeper remains a member of the Company’s board of directors and for a period of six months thereafter, the customary voting, standstill, and transfer restrictions set forth in the original Investment Agreement with respect to the Preferred Stock will continue to apply to CD&R Holdings and its related fund in accordance with their terms. Following the closing of the repurchase, Mr. Sleeper resigned from the Company’s board; Mr. Knisely remains a member. The aggregate Repurchase Price and related transaction fees and expenses were financed by a combination of proceeds from the 2030 Senior Notes, which are further described in Note 11, as well as the 2026 ABL and cash on hand. On and after the Repurchase Date, all dividends and distributions ceased to accrue on the Shares, the repurchased Shares are no longer deemed outstanding, and all rights of CD&R Holdings with respect to the repurchased Shares terminated.

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Pay vs Performance Disclosure
Net income (loss)	$ 153.8	$ 174.5	$ 178.6	$ 230.3

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
	Jun. 30, 2023
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 30, 2023
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The Company prepared the condensed consolidated financial statements in accordance with U.S. generally accepted accounting principles (“GAAP”) for interim financial information and the requirements of the Securities and Exchange Commission (“SEC”). As permitted under those rules, certain footnotes or other financial information have been condensed or omitted. Certain prior period amounts have been reclassified to conform to current period presentation. The balance sheet as of June 30, 2022 has been presented for a better understanding of the impact of seasonal fluctuations on the Company’s financial condition. The three-month periods ended June 30, 2023 and 2022 each had 64 business days. The six-month periods ended June 30, 2023 and 2022 had 128 and 127 business days, respectively. In management’s opinion, the unaudited condensed consolidated financial statements include all normal and recurring adjustments that are considered necessary for the fair presentation of the Company’s financial position and operating results. The results for the three and six months ended June 30, 2023 are not necessarily indicative of the results to be expected for the twelve months ending December 31, 2023. These unaudited condensed consolidated financial statements should be read in conjunction with the audited Consolidated Financial Statements and Notes thereto contained in the Company’s most recent Annual Report on Form 10-K for the fiscal year ended December 31, 2022.
Recent Accounting Pronouncements-Adpoted and Not Yet Adopted	Recent Accounting Pronouncements— Adopted In October 2021, the Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update (“ASU”) 2021-08, “Business Combinations – Accounting for Contract Assets and Contract Liabilities from Contracts with Customers.” The guidance is intended to improve the accounting for acquired revenue contracts with customers in a business combination by addressing diversity in practice. The guidance requires an acquirer to recognize and measure contract assets and liabilities acquired in a business combination in accordance with Topic 606 as if it had originated the contracts, as opposed to at fair value on the acquisition date. The standard became effective for the Company on January 1, 2023 and was applied prospectively to acquisitions occurring after the adoption date. The adoption of this new guidance did not have a material impact on the Company’s financial statements and related disclosures. In March 2020, the FASB issued ASU 2020-04, “Reference Rate Reform (Topic 848), Facilitation of the Effects of Reference Rate Reform on Financial Reporting.” The guidance provides optional practical expedients to ease the potential burden in accounting for contract modifications and hedge accounting related to reference rate reform. The provisions apply only to those transactions that reference LIBOR or another reference rate expected to be discontinued due to reference rate reform. Specifically, entities can elect to not apply certain modification accounting requirements to contracts affected by reference rate reform if certain criteria are met. Also, entities can elect various optional expedients that would allow it to continue to apply hedge accounting for hedging relationships affected by reference rate reform if certain criteria are met. Adoption of the provisions of ASU 2020-04 are optional and expedients may be elected over time as reference rate reform activities occur. Further, in December 2022, the FASB issued ASU 2022-06, “Reference Rate Reform (Topic 848): Deferral of the Sunset Date of Topic 848,” extending the sunset date under Topic 848 from December 31, 2022 to December 31, 2024 to align the temporary accounting relief guidance with the LIBOR cessation date of June 30, 2023. During the three months ended March 31, 2023, the Company adopted the optional relief guidance provided under ASU 2020-04 after entering into a new interest rate swap agreement with a reference rate indexed to SOFR, thereby creating a temporary mismatch in the referenced interest rate index of the Company’s interest rate swap and the hedged variable rate interest payments pursuant to the Company’s Term Loan. See Note 17 for further details of the transaction. The optional expedient did not have a material impact on the Company’s financial statements and related disclosures. Additionally, during the three months ended June 30, 2023, the Company entered into the second amendment to the 2026 ABL, which replaced the reference rate from LIBOR with a Secured Overnight Financing Rate (“Term SOFR”). See Note 11 for further details of the transaction. In connection with this amendment, the Company adopted ASU 2020-04 and elected the debt accounting optional expedient. The optional expedient did not have a material impact on the Company’s financial statements and related disclosures. In July 2023, the Company entered into the second amendment to the 2028 Term Loan, which replaced the reference rate from LIBOR with a Secured Overnight Financing Rate (“Term SOFR”). See Note 11 for further details of the transaction. In connection with this amendment, the Company will elect the debt accounting optional expedient. The Company may also take advantage of other optional relief guidance offered under ASU 2020-04 in the future and will evaluate and disclose the impact of this guidance in the period of election, as well as the nature and reason for doing so. Recent Accounting Pronouncements—Not Yet Adopted There were no recent accounting pronouncements not yet adopted through June 30, 2023 that are applicable to the Company except as discussed in ASU 2020-04 above.

Acquisitions (Tables)

Acquisitions (Tables)	6 Months Ended
	Jun. 30, 2023
Business Combination and Asset Acquisition [Abstract]
Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination	The results of operations for these transactions are included in the Company’s condensed consolidated statements of operations from the date of the acquisition (dollars in millions): Date Acquired Company Name Region Branches Goodwill Recognized 1 Intangible Assets Acquired 1 June 12, 2023 Silver State Building Materials, Inc. Nevada 1 $ 0.5 $ 0.9 March 31, 2023 Al's Roofing Supply, Inc. California 4 $ 3.1 $ 7.1 March 31, 2023 Prince Building Systems, LLC Wisconsin 1 $ 0.1 $ 2.0 January 4, 2023 First Coastal Exteriors, LLC Alabama and Mississippi 2 $ 0.7 $ 1.9 December 30, 2022 Whitney Building Products Massachusetts 1 $ 2.7 $ 2.8 November 1, 2022 Coastal Construction Products Florida, Illinois, Alabama, Georgia, Arkansas, Tennessee, and North Carolina 18 $ 131.9 $ 102.7 June 1, 2022 Complete Supply, Inc. Illinois 1 $ 8.6 $ 4.6 April 29, 2022 Wichita Falls Builders Wholesale, Inc. Texas 1 $ 0.4 $ 0.5 January 1, 2022 Crabtree Siding and Supply Tennessee 1 $ 0.1 $ 0.1 1. For Silver State Building Materials, Inc., Al’s Roofing Supply, Inc., Prince Building Systems, LLC, First Coastal Exteriors, LLC, Whitney Building Products and Coastal Construction Products, the measurement period is still open and amounts are based on provisional estimates of the fair value of assets acquired and liabilities assumed as of June 30, 2023 .

Net Sales (Tables)

Net Sales (Tables)	6 Months Ended
	Jun. 30, 2023
Revenue from Contract with Customer [Abstract]
Summary of Net Sales by Product Line and Geography	The following table presents the Company’s net sales by line of business and geography (in millions): U.S. Canada Total Three Months Ended June 30, 2023 Residential roofing products $ 1,276.1 $ 21.9 $ 1,298.0 Non-residential roofing products 615.7 55.1 670.8 Complementary building products 531.7 3.2 534.9 Total net sales $ 2,423.5 $ 80.2 $ 2,503.7 Three Months Ended June 30, 2022 Residential roofing products $ 1,168.6 $ 27.5 $ 1,196.1 Non-residential roofing products 634.8 47.8 682.6 Complementary building products 476.1 3.4 479.5 Total net sales $ 2,279.5 $ 78.7 $ 2,358.2 Six Months Ended June 30, 2023 Residential roofing products $ 2,120.1 $ 28.0 $ 2,148.1 Non-residential roofing products 1,041.8 79.0 1,120.8 Complementary building products 962.5 4.6 967.1 Total net sales $ 4,124.4 $ 111.6 $ 4,236.0 Six Months Ended June 30, 2022 Residential roofing products $ 2,004.4 $ 38.2 $ 2,042.6 Non-residential roofing products 1,092.2 78.1 1,170.3 Complementary building products 826.9 5.3 832.2 Total net sales $ 3,923.5 $ 121.6 $ 4,045.1

Net Income (Loss) Per Share (Ta

Net Income (Loss) Per Share (Tables)	6 Months Ended
	Jun. 30, 2023
Earnings Per Share [Abstract]
Components and Calculation of Basic and Diluted Net Income (Loss) Per Share	The following table presents the components and calculations of basic and diluted net income (loss) per share (in millions, except per share amounts; certain amounts may not recalculate due to rounding): Three Months Ended June 30, Six Months Ended June 30, 2023 2022 2023 2022 Numerator: Net income (loss) $ 153.8 $ 174.5 $ 178.6 $ 230.3 Dividends on Preferred Stock (6.0) (6.0) (12.0) (12.0) Undistributed income allocated to participating securities (19.5) (20.9) (21.9) (26.8) Net income (loss) attributable to common stockholders – Basic and Diluted $ 128.3 $ 147.6 $ 144.7 $ 191.5 Denominator: Weighted-average common shares outstanding – Basic 63.7 68.1 64.0 69.1 Effect of common share equivalents 1.4 1.4 1.3 1.3 Weighted-average common shares outstanding – Diluted 65.1 69.5 65.3 70.4 Net income (loss) per share: Net income (loss) per share – Basic $ 2.02 $ 2.17 $ 2.26 $ 2.77 Net income (loss) per share – Diluted $ 1.97 $ 2.12 $ 2.22 $ 2.72
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share	The following table includes the number of shares that may be dilutive common shares in the future. These shares were not included in the computation of diluted net income (loss) per share because the effect was either anti-dilutive or the requisite performance conditions were not met (in millions): Three Months Ended June 30, Six Months Ended June 30, 2023 2022 2023 2022 Stock options 0.3 0.2 0.3 0.1 Restricted stock units — — 0.1 — Preferred Stock 9.7 9.7 9.7 9.7 Equity forward contract — 0.9 — 0.9

Stock-based Compensation (Table

Stock-based Compensation (Tables)	6 Months Ended
	Jun. 30, 2023
Share-Based Payment Arrangement [Abstract]
Fair Values of Options, Black-Scholes Option-Pricing Model, Weighted-Average Assumptions	The fair values of the options granted for the periods presented were estimated on the dates of grants using the Black-Scholes option-pricing model with the following weighted-average assumptions: Six Months Ended June 30, 2023 2022 Risk-free interest rate 4.26 % 1.93 % Expected volatility 49.92 % 48.89 % Expected life (in years) 5.12 5.14 Dividend yield — —
Stock Options Outstanding and Activity During the Period	The following table summarizes all stock option activity for the six months ended June 30, 2023 (in millions, except per share amounts and time periods): Options Outstanding Weighted-Average Exercise Price Weighted-Average Remaining Contractual Term (Years) Aggregate Intrinsic Value 1 Balance as of December 31, 2022 1.3 $ 38.73 6.0 $ 20.7 Granted 0.1 65.00 Exercised (0.2) 37.99 Canceled/Forfeited (0.0) 49.68 Balance as of June 30, 2023 1.2 $ 41.09 6.2 $ 52.5 Vested and expected to vest after June 30, 2023 1.2 $ 40.76 6.1 $ 52.0 Exercisable as of June 30, 2023 0.9 $ 36.19 5.3 $ 43.4
Stock Option Grants, Vesting, and Exercises	The following table summarizes additional information on stock options (in millions, except per share amounts): Six Months Ended June 30, 2023 2022 Weighted-average fair value per share of stock options granted $ 31.86 $ 26.50 Total grant date fair value of stock options vested $ 1.9 $ 0.2 Total intrinsic value of stock options exercised $ 5.9 $ 7.6
Restricted Shares and Units Outstanding and Activity During the Period	The following table summarizes all RSU activity for the six months ended June 30, 2023 (in millions, except grant date fair value amounts): RSUs Outstanding Weighted-Average Grant Date Fair Value Balance as of December 31, 2022 1.2 $ 45.60 Granted 0.4 $ 62.98 Released (0.1) $ 45.74 Canceled/Forfeited (0.0) $ 53.40 Balance as of June 30, 2023 1.5 $ 50.13 Vested and expected to vest after June 30, 2023 1 1.6 $ 48.94 1. As of June 30, 2023, outstanding awards with performance conditions were expected to vest at greater than 100% of their original grant amount.
Schedule Of Restricted Stock Units Additional Information	The following table summarizes additional information regarding RSUs (in millions, except per share amounts): Six Months Ended June 30, 2023 2022 Weighted-average fair value per share of RSUs granted $ 62.98 $ 50.94 Total grant date fair value of RSUs vested $ 4.1 $ 2.1 Total intrinsic value of RSUs released $ 5.3 $ 2.0

Share Repurchase Program (Table

Share Repurchase Program (Tables)	6 Months Ended
	Jun. 30, 2023
Equity [Abstract]
Class of Treasury Stock	The following table sets forth the Company’s share repurchases (in millions, except per share data): Three Months Ended June 30, Six Months Ended June 30, 2023 2022 2023 2022 Total number of shares repurchased 1 0.8 3.9 1.2 5.8 Amount repurchased 1,2 $ 51.6 $ 250.0 $ 74.8 $ 387.9 Average price per share $ 66.72 $ 57.90 $ 63.82 $ 58.28 1. Total shares repurchased for the three months ended June 30, 2022 includes 406,200 shares received for $25 million of the March 2022 ASR repurchase price that was evaluated as an unsettled equity forward contract indexed to the Company’s common stock as of March 31, 2022.

Prepaid Expenses and Other Cu_2

Prepaid Expenses and Other Current Assets (Tables)	6 Months Ended
	Jun. 30, 2023
Other Income and Expenses [Abstract]
Schedule of Other Current Assets	The following table summarizes the significant components of prepaid expenses and other current assets (in millions): June 30, December 31, June 30, 2023 2022 2022 Vendor rebates $ 413.7 $ 335.9 $ 364.2 Other 98.4 81.9 58.4 Total prepaid expenses and other current assets $ 512.1 $ 417.8 $ 422.6

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	6 Months Ended
	Jun. 30, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Summary of Changes in goodwill	The following table sets forth the change in the carrying amount of goodwill during the six months ended June 30, 2023 (in millions): Balance as of December 31, 2022 $ 1,916.3 Acquisitions 6.0 Translation and other adjustments 0.6 Balance as of June 30, 2023 $ 1,922.9
Summary of Intangible Assets	The following table summarizes intangible assets by category (in millions, except time periods): June 30, December 31, June 30, Weighted-Average Remaining 2023 2022 2022 Life 1 (Years) Amortizable intangible assets: Customer relationships $ 1,210.2 $ 1,198.1 $ 1,097.5 15.6 Trademarks 4.5 4.5 1.0 1.3 Total amortizable intangible assets 1,214.7 1,202.6 1,098.5 15.5 Accumulated amortization (808.7) (764.7) (724.9) Total amortizable intangible assets, net 406.0 437.9 373.6 Indefinite-lived trademarks 9.8 9.8 9.8 Total intangibles, net $ 415.8 $ 447.7 $ 383.4
Summary of Estimated Future Amortization	The following table summarizes the estimated future amortization expense for intangible assets (in millions): Year Ending December 31, 2023 (July - December) $ 39.7 2024 69.4 2025 56.8 2026 48.2 2027 39.2 Thereafter 152.7 Total future amortization expense $ 406.0

Accrued Expenses (Tables)

Accrued Expenses (Tables)	6 Months Ended
	Jun. 30, 2023
Payables and Accruals [Abstract]
Schedule of Accrued Liabilities	The following table summarizes the significant components of accrued expenses (in millions): June 30, December 31, June 30, 2023 2022 2022 Inventory $ 229.5 $ 106.9 $ 187.7 Customer rebates 63.3 112.8 56.8 Payroll and employee benefit costs 60.4 118.6 102.4 Selling, general and administrative 106.3 96.0 88.2 Income taxes 35.8 7.8 38.2 Interest and other 2.7 5.9 3.2 Total accrued expenses $ 498.0 $ 448.0 $ 476.5

Financing Arrangements (Tables)

Financing Arrangements (Tables)	6 Months Ended
	Jun. 30, 2023
Debt Disclosure [Abstract]
Schedule of Outstanding Debt Presented Net of Unamortized Debt Issuance Costs and Other Financing Arrangements	The following table summarizes all outstanding debt (presented net of unamortized debt issuance costs) and other financing arrangements (in millions): June 30, December 31, June 30, 2023 2022 2022 Revolving Lines of Credit 2026 ABL: 2026 U.S. Revolver 1 $ 67.5 $ 254.9 $ 455.1 2026 Canada Revolver — — 6.2 Borrowings under revolving lines of credit, net $ 67.5 $ 254.9 $ 461.3 Long-term Debt, net Term Loan: 2028 Term Loan 2 $ 968.3 $ 972.2 $ 975.9 Current portion (10.0) (10.0) (10.0) Long-term borrowings under term loan 958.3 962.2 965.9 Senior Notes: 2026 Senior Notes 3 297.8 297.4 297.1 2029 Senior Notes 4 347.1 346.8 346.6 Long-term borrowings under senior notes 644.9 644.2 643.7 Long-term debt, net $ 1,603.2 $ 1,606.4 $ 1,609.6 1. Effective rate on borrowings of 7.21%, 5.45%, and 2.48% as of June 30, 2023, December 31, 2022 and June 30, 2022, respectively. 2. Interest rate of 7.40%, 6.32% and 3.31% as of June 30, 2023, December 31, 2022 and June 30, 2022, respectively. 3. Interest rate of 4.50% for all periods presented. 4. Interest rate of 4.125% for all periods presented.

Leases (Tables)

Leases (Tables)	6 Months Ended
	Jun. 30, 2023
Leases [Abstract]
Components of Operating Lease Costs Recognized in Condensed Consolidated Statements of Operations Amounts Include Both Continuing and Discontinued Operations	The following table summarizes components of lease costs recognized in the condensed consolidated statements of operations (in millions): Three Months Ended June 30, Six Months Ended June 30, 2023 2022 2023 2022 Operating lease costs $ 30.6 $ 27.3 $ 60.6 $ 54.7 Finance lease costs: Amortization of right-of-use assets 5.2 3.1 9.8 5.8 Interest on lease obligations 1.3 0.5 2.4 1.0 Variable lease costs 3.1 2.2 5.9 4.4 Total lease costs $ 40.1 $ 33.2 $ 78.7 $ 65.9
Summary of Supplemental Cash Flow Information Related to Leases	The following table presents supplemental cash flow information related to the Company’s leases (in millions): Six Months Ended June 30, 2023 2022 Cash paid for amounts included in measurement of lease obligations: Operating cash flows from operating leases $ 57.7 $ 51.7 Operating cash flows from finance leases $ 2.3 $ 0.9 Financing cash flows from finance leases $ 9.1 $ 4.9 Right-of-use assets obtained in exchange for new finance lease liabilities $ 25.3 $ 30.5 Right-of-use assets obtained in exchange for new operating lease liabilities $ 22.5 $ 14.4
Lessee, Operating Lease, Liability, Maturity	The following table summarizes future lease payments as of June 30, 2023 (in millions): Year Ending December 31, Operating Leases Finance Leases 2023 (July - December) $ 59.4 $ 12.6 2024 112.1 25.1 2025 93.7 24.8 2026 80.7 23.3 2027 64.1 18.3 Thereafter 148.2 8.5 Total future lease payments 558.2 112.6 Imputed interest (75.9) (13.3) Total lease liabilities $ 482.3 $ 99.3
Finance Lease, Liability, Fiscal Year Maturity	The following table summarizes future lease payments as of June 30, 2023 (in millions): Year Ending December 31, Operating Leases Finance Leases 2023 (July - December) $ 59.4 $ 12.6 2024 112.1 25.1 2025 93.7 24.8 2026 80.7 23.3 2027 64.1 18.3 Thereafter 148.2 8.5 Total future lease payments 558.2 112.6 Imputed interest (75.9) (13.3) Total lease liabilities $ 482.3 $ 99.3

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Loss) (Tables)	6 Months Ended
	Jun. 30, 2023
Equity [Abstract]
Reclassification out of Accumulated Other Comprehensive Income	The following table summarizes the components of, and changes in, AOCI (in millions): Foreign Currency Translation Derivative Financial Instruments AOCI Balance as of December 31, 2022 $ (22.2) $ 9.7 $ (12.5) Other comprehensive income before reclassifications 2.3 5.1 7.4 Reclassifications out of other comprehensive loss — (1.0) (1.0) Balance as of June 30, 2023 $ (19.9) $ 13.8 $ (6.1)

Geographic Data (Tables)

Geographic Data (Tables)	6 Months Ended
	Jun. 30, 2023
Segment Reporting [Abstract]
Schedule of Geographic Information	The following table summarizes certain geographic information (in millions): June 30, December 31, June 30, 2023 2022 2022 Long-lived assets: U.S. $ 786.2 $ 770.6 $ 653.8 Canada 11.9 11.8 10.3 Total long-lived assets $ 798.1 $ 782.4 $ 664.1

Financial Derivatives (Tables)

Financial Derivatives (Tables)	6 Months Ended
	Jun. 30, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Summary of Combined Fair Values, Net of Tax of Interest Rate Derivative Instruments	The following table summarizes the combined fair values, net of tax, of the interest rate derivative instrument (in millions): Net Assets (Liabilities) as of June 30, December 31, June 30, Instrument Fair Value Hierarchy 2023 2022 2022 Designated interest rate swaps 1 Level 2 $ 14.8 $ 9.7 $ 6.3 1. Assets are included in the condensed consolidated balance sheets in prepaid expenses and other current assets, while liabilities are included in accrued expenses.
Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss)	The following table summarizes the amounts of gain (loss) on the change in fair value of the designated interest rate swaps recognized in other comprehensive income (in millions): Three Months Ended June 30, Six Months Ended June 30, Instrument 2023 2022 2023 2022 Designated interest rate swaps $ 7.9 $ 2.6 $ 5.1 $ 10.4

Company Overview - Additional I

Company Overview - Additional Information (Detail)	Jun. 30, 2023 Province State
U.S.
Company Overview [Line Items]
Number of states in which entity operates | State	50
Canada
Company Overview [Line Items]
Number of provinces in which entity operates | Province	6

Acquisitions - Additional Infor

Acquisitions - Additional Information (Details) - USD ($) $ in Millions

3 Months Ended

6 Months Ended

Jun. 30, 2023

Jun. 30, 2023

Mar. 31, 2023

Jan. 04, 2023

Dec. 31, 2022

Dec. 30, 2022

Nov. 01, 2022

Jun. 30, 2022

Jun. 01, 2022

Apr. 29, 2022

Jan. 01, 2022

Dec. 31, 2021

Business Acquisition [Line Items]

Prior to acquisition annual sales

$ 346.1

Business combination, acquisition related costs

$ 1.2

$ 2.8

Goodwill recognized

$ 1,922.9

$ 1,922.9

$ 1,916.3

$ 1,785.2

Al's Roofing Supply, Inc.

Business Acquisition [Line Items]

Business acquisition, percentage of equity interests acquired

100%

100%

Goodwill recognized

$ 3.1

Prince Building Systems, LLC

Business Acquisition [Line Items]

Business acquisition, percentage of equity interests acquired

100%

100%

Goodwill recognized

$ 0.1

First Coastal Exteriors, LLC

Business Acquisition [Line Items]

Business acquisition, percentage of equity interests acquired

100%

100%

Goodwill recognized

$ 0.7

Whitney Building Products

Business Acquisition [Line Items]

Business acquisition, percentage of equity interests acquired

100%

100%

Goodwill recognized

$ 2.7

Coastal Construction Products

Business Acquisition [Line Items]

Business acquisition, percentage of equity interests acquired

100%

100%

Goodwill recognized

$ 131.9

Complete Supply, Inc.

Business Acquisition [Line Items]

Business acquisition, percentage of equity interests acquired

100%

100%

Goodwill recognized

$ 8.6

Wichita Falls Builders Wholesale, Inc.

Business Acquisition [Line Items]

Business acquisition, percentage of equity interests acquired

100%

100%

Goodwill recognized

$ 0.4

Crabtree Siding and Supply

Business Acquisition [Line Items]

Business acquisition, percentage of equity interests acquired

100%

100%

Goodwill recognized

$ 0.1

Series of Individually Immaterial Business Acquisitions

Business Acquisition [Line Items]

Goodwill recognized

$ 148.1

$ 148.1

Business acquisition, goodwill, tax deductible amount

$ 73

$ 73

Acquisitions - Finite-Lived and

Acquisitions - Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination (Details) $ in Millions	Jun. 30, 2023 USD ($)	Jun. 12, 2023 USD ($) branch	Mar. 31, 2023 USD ($) branch	Jan. 04, 2023 USD ($) branch	Dec. 31, 2022 USD ($)	Dec. 30, 2022 USD ($) branch	Nov. 01, 2022 USD ($) branch	Jun. 30, 2022 USD ($)	Jun. 01, 2022 USD ($) branch	Apr. 29, 2022 USD ($) branch	Jan. 01, 2022 USD ($) branch
Business Acquisition [Line Items]
Goodwill recognized	$ 1,922.9				$ 1,916.3			$ 1,785.2
Silver State Building Materials, Inc.
Business Acquisition [Line Items]
Branches | branch		1
Goodwill recognized		$ 0.5
Intangible Assets Acquired		$ 0.9
Al's Roofing Supply, Inc.
Business Acquisition [Line Items]
Branches | branch			4
Goodwill recognized			$ 3.1
Intangible Assets Acquired			$ 7.1
Prince Building Systems, LLC
Business Acquisition [Line Items]
Branches | branch			1
Goodwill recognized			$ 0.1
Intangible Assets Acquired			$ 2
First Coastal Exteriors, LLC
Business Acquisition [Line Items]
Branches | branch				2
Goodwill recognized				$ 0.7
Intangible Assets Acquired				$ 1.9
Whitney Building Products
Business Acquisition [Line Items]
Branches | branch						1
Goodwill recognized						$ 2.7
Intangible Assets Acquired						$ 2.8
Coastal Construction Products
Business Acquisition [Line Items]
Branches | branch							18
Goodwill recognized							$ 131.9
Intangible Assets Acquired							$ 102.7
Complete Supply, Inc.
Business Acquisition [Line Items]
Branches | branch									1
Goodwill recognized									$ 8.6
Intangible Assets Acquired									$ 4.6
Wichita Falls Builders Wholesale, Inc.
Business Acquisition [Line Items]
Branches | branch										1
Goodwill recognized										$ 0.4
Intangible Assets Acquired										$ 0.5
Crabtree Siding and Supply
Business Acquisition [Line Items]
Branches | branch											1
Goodwill recognized											$ 0.1
Intangible Assets Acquired											$ 0.1

Net Sales - Summary of Net Sale

Net Sales - Summary of Net Sales by Product Line and Geography (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Disaggregation Of Revenue [Line Items]
Net sales	$ 2,503.7	$ 2,358.2	$ 4,236	$ 4,045.1
Residential roofing products
Disaggregation Of Revenue [Line Items]
Net sales	1,298	1,196.1	2,148.1	2,042.6
Non-residential roofing products
Disaggregation Of Revenue [Line Items]
Net sales	670.8	682.6	1,120.8	1,170.3
Complementary building products
Disaggregation Of Revenue [Line Items]
Net sales	534.9	479.5	967.1	832.2
U.S.
Disaggregation Of Revenue [Line Items]
Net sales	2,423.5	2,279.5	4,124.4	3,923.5
U.S. | Residential roofing products
Disaggregation Of Revenue [Line Items]
Net sales	1,276.1	1,168.6	2,120.1	2,004.4
U.S. | Non-residential roofing products
Disaggregation Of Revenue [Line Items]
Net sales	615.7	634.8	1,041.8	1,092.2
U.S. | Complementary building products
Disaggregation Of Revenue [Line Items]
Net sales	531.7	476.1	962.5	826.9
Canada
Disaggregation Of Revenue [Line Items]
Net sales	80.2	78.7	111.6	121.6
Canada | Residential roofing products
Disaggregation Of Revenue [Line Items]
Net sales	21.9	27.5	28	38.2
Canada | Non-residential roofing products
Disaggregation Of Revenue [Line Items]
Net sales	55.1	47.8	79	78.1
Canada | Complementary building products
Disaggregation Of Revenue [Line Items]
Net sales	$ 3.2	$ 3.4	$ 4.6	$ 5.3

Net Income (Loss) Per Share - A

Net Income (Loss) Per Share - Additional Information (Details) - USD ($)		1 Months Ended
	Jan. 02, 2018	Jul. 31, 2023	Jun. 30, 2023	Dec. 31, 2022	Jun. 30, 2022
Sales Of Shares A Cumulative Convertible Participating Preferred Stock [Line Items]
Preferred stock, issuance (in shares)			0	0	0
Common stock, par value (in USD per share)	$ 0.01		$ 0.01	$ 0.01	$ 0.01
Allied Acquisition | Investment Agreement | Series A Cumulative Convertible Participating Preferred Stock
Sales Of Shares A Cumulative Convertible Participating Preferred Stock [Line Items]
Preferred stock, issuance (in shares)	400,000
Preferred stock, par value (in USD per share)	$ 0.01
Preferred stock, liquidation preference value	$ 400,000,000
Preferred stock, liquidation purchase price per share (in USD per share)	$ 1,000
Preferred stock conversion price per share (in USD per share)	$ 41.26
Common stock to be issued upon conversion of convertible preferred stock (in shares)	9,694,619
Preferred stock dividend rate	6%
Allied Acquisition | Investment Agreement | Series A Cumulative Convertible Participating Preferred Stock | Subsequent Event
Sales Of Shares A Cumulative Convertible Participating Preferred Stock [Line Items]
Stock repurchased during period (in shares)		400,000

Net Income (Loss) Per Share - C

Net Income (Loss) Per Share - Components and Calculation of Basic and Diluted Net Income (Loss) Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Numerator:
Net income (loss)	$ 153.8	$ 174.5	$ 178.6	$ 230.3
Dividends on Preferred Stock	(6)	(6)	(12)	(12)
Undistributed income allocated to participating securities	(19.5)	(20.9)	(21.9)	(26.8)
Net income (loss) from continuing operations attributable to common stockholders - Basic	128.3	147.6	144.7	191.5
Net income (loss) from continuing operations attributable to common stockholders - Diluted	$ 128.3	$ 147.6	$ 144.7	$ 191.5
Denominator:
Weighted-average common shares outstanding - Basic (in shares)	63.7	68.1	64	69.1
Effect of common share equivalents (in shares)	1.4	1.4	1.3	1.3
Weighted-average common shares outstanding - Diluted (in shares)	65.1	69.5	65.3	70.4
Net income (loss) per share:
Basic net income (loss) per share ( usd per share)	$ 2.02	$ 2.17	$ 2.26	$ 2.77
Diluted net income (loss) per share ( usd per share)	$ 1.97	$ 2.12	$ 2.22	$ 2.72

Net Income (Loss) Per Share - S

Net Income (Loss) Per Share - Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share (Details) - shares shares in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Preferred Stock
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from computation of diluted net income (loss) per share ( in shares)	9.7	9.7	9.7	9.7
Stock options
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from computation of diluted net income (loss) per share ( in shares)	0.3	0.2	0.3	0.1
Restricted stock units
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from computation of diluted net income (loss) per share ( in shares)	0	0	0.1	0
Equity forward contract
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from computation of diluted net income (loss) per share ( in shares)	0	0.9	0	0.9

Stock-based Compensation - Addi

Stock-based Compensation - Additional Information (Detail) - USD ($)		3 Months Ended		6 Months Ended		12 Months Ended
	Feb. 11, 2020	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022	Jan. 02, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation number of additional shares authorized (in shares)	4,850,000
Stock-based compensation number of shares authorized (in shares)		2,900,286		2,900,286
Unrecognized compensation cost related to unvested stock		$ 5,900,000		$ 5,900,000
Weighted average remaining contractual term				6 years 2 months 12 days		6 years
Common stock (voting), par value (in usd per share)		$ 0.01	$ 0.01	$ 0.01	$ 0.01	$ 0.01	$ 0.01
Maximum purchase amount per year		$ 25,000
Restricted Stock Unit Award with Performance Conditions
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of shares that will vest				100%
Restricted Stock Unit Award with Market Conditions
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of shares that will vest				100%
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-qualified options granted expiration period				10 years
Vesting period				3 years
Allocated stock-based compensation expense		$ 1,100,000	$ 1,100,000	$ 2,000,000	$ 1,900,000
Weighted average remaining contractual term				2 years
Phantom Share Units (PSUs) | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of shares that will vest		0%
Phantom Share Units (PSUs) | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of shares that will vest		200%
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated stock-based compensation expense		$ 7,200,000	$ 6,900,000	$ 12,300,000	$ 11,200,000
Unrecognized compensation cost related to unvested stock		$ 39,000,000		$ 39,000,000
Weighted average period to recognize performance conditions				2 years 2 months 12 days
Employee Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Purchase price per share, percent		85%
Maximum purchase amount		$ 12,500
Number of shares authorized (in shares)		1,000,000		1,000,000

Stock-based Compensation - Fair

Stock-based Compensation - Fair Values of Options, Black-Scholes Option-Pricing Model, Weighted-Average Assumptions (Detail)	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Share-Based Payment Arrangement [Abstract]
Risk-free interest rate	4.26%	1.93%
Expected volatility	49.92%	48.89%
Expected life (in years)	5 years 1 month 13 days	5 years 1 month 20 days
Dividend yield	0%	0%

Stock-based compensation - Stoc

Stock-based compensation - Stock Options Outstanding and Activity During the Period (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2023	Dec. 31, 2022
Options Outstanding
Beginning Balance (in shares)	1.3
Granted (in shares)	0.1
Exercised (in shares)	(0.2)
Canceled/Forfeited (in shares)	0
Ending Balance (in shares)	1.2	1.3
Vested and expected to vest (in shares)	1.2
Exercisable (in shares)	0.9
Weighted-Average Exercise Price
Beginning Balance (in usd per share)	$ 38.73
Granted (in usd per share)	65
Exercised (in usd per share)	37.99
Canceled/Forfeited (in usd per share)	49.68
Ending Balance (in usd per share)	41.09	$ 38.73
Vested and expected to vest (in usd per share)	40.76
Exercisable (in usd per share)	$ 36.19
Weighted-Average Remaining Contractual Term (Years)
Balance	6 years 2 months 12 days	6 years
Vested and expected to vest	6 years 1 month 6 days
Exercisable	5 years 3 months 18 days
Aggregate Intrinsic Value
Balance	$ 52.5	$ 20.7
Vested and expected to vest	52
Exercisable	$ 43.4

Stock-based Compensation - St_2

Stock-based Compensation - Stock Option Grants, Vesting, and Exercises (Detail) - USD ($) $ / shares in Units, $ in Millions	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Share-Based Payment Arrangement [Abstract]
Weighted-average fair value per share of stock options granted (in usd per share)	$ 31.86	$ 26.50
Total grant date fair value of stock options vested	$ 1.9	$ 0.2
Total intrinsic value of stock options exercised	$ 5.9	$ 7.6

Stock-based Compensation - Rest

Stock-based Compensation - Restricted Shares and Units Outstanding and Activity During the Period (Detail) - $ / shares shares in Millions	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Weighted-Average Grant Date Fair Value
Granted (in USD per share)	$ 62.98	$ 50.94
Restricted stock units
RSUs Outstanding
Beginning Balance (in shares)	1.2
Granted (in shares)	0.4
Released (in shares)	(0.1)
Canceled/Forfeited (in shares)	0
Ending Balance (in shares)	1.5
Vested and expected to vest (in shares)	1.6
Weighted-Average Grant Date Fair Value
Beginning Balance (in USD per share)	$ 45.60
Granted (in USD per share)	62.98
Released (in USD per share)	45.74
Canceled/Forfeited (in USD per share)	53.40
Ending Balance (in USD per share)	50.13
Vested and expected to vest (in USD per share)	$ 48.94
Performance Conditions | Minimum
Weighted-Average Grant Date Fair Value
Percentage of shares expected to be vested	100%

Stock-based Compensation - Sche

Stock-based Compensation - Schedule Of Restricted Stock Units Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Share-Based Payment Arrangement [Abstract]
Weighted-average fair value per share of RSUs granted (in USD per share)	$ 62.98	$ 50.94
Total grant date fair value of RSUs vested	$ 4.1	$ 2.1
Total intrinsic value of RSUs released	$ 5.3	$ 2

Share Repurchase Program - Addi

Share Repurchase Program - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Feb. 24, 2022
Equity, Class of Treasury Stock [Line Items]
Accelerated share repurchase program, cost	$ 600,000	$ 200,000	$ 600,000	$ 300,000
Remaining repurchase amount	$ 425,300,000		$ 425,300,000
Repurchase Program | Common Stock
Equity, Class of Treasury Stock [Line Items]
Repurchase of common stock					$ 500,000,000
Increased authorized amount					387,900,000
Repurchase Program | Maximum | Common Stock
Equity, Class of Treasury Stock [Line Items]
Repurchase of common stock					$ 500,000,000

Share Repurchase Program - Clas

Share Repurchase Program - Class of Treasury Stock (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2023	Dec. 31, 2022	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Equity, Class of Treasury Stock [Line Items]
Total number of shares repurchased (in shares)	800,000		3,900,000	1,200,000	5,800,000
Average price per share (in usd per share)	$ 66.72			$ 63.82
Stock issued during period (in shares)		1,100,000	406,200
Accelerated share repurchase price			$ 25		$ 50
Common Stock
Equity, Class of Treasury Stock [Line Items]
Amount repurchased	$ 51.6		$ 250	$ 74.8	$ 387.9
Average price per share (in usd per share)			$ 57.90		$ 58.28

Prepaid Expenses and Other Cu_3

Prepaid Expenses and Other Current Assets - Schedule of Other Current Assets (Details) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022	Jun. 30, 2022
Other Income and Expenses [Abstract]
Vendor rebates	$ 413.7	$ 335.9	$ 364.2
Other	98.4	81.9	58.4
Prepaid expenses and other current assets	$ 512.1	$ 417.8	$ 422.6

Goodwill and Intangible Asset_2

Goodwill and Intangible Assets - Summary of Changes in goodwill (Detail) $ in Millions	6 Months Ended
	Jun. 30, 2023 USD ($)
Goodwill [Roll Forward]
Beginning balance	$ 1,916.3
Acquisitions	6
Translation and other adjustments	0.6
Ending balance	$ 1,922.9

Goodwill and Intangible Asset_3

Goodwill and Intangible Assets - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Goodwill [Line Items]
Amortization of intangible assets	$ 21.4	$ 21.5	$ 43.7	$ 42.9
Minimum
Goodwill [Line Items]
Useful life	2 years		2 years
Maximum
Goodwill [Line Items]
Useful life	20 years		20 years

Goodwill and Intangible Asset_4

Goodwill and Intangible Assets - Summary of Intangible Assets (Detail) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022	Jun. 30, 2022
Finite Lived Intangible Assets [Line Items]
Amortizable intangible assets:	$ 1,214.7	$ 1,202.6	$ 1,098.5
Accumulated amortization	(808.7)	(764.7)	(724.9)
Total future amortization expense	406	437.9	373.6
Indefinite-lived trademarks	9.8	9.8	9.8
Total intangibles, net	$ 415.8	447.7	383.4
Weighted Average
Finite Lived Intangible Assets [Line Items]
Weighted-Average Remaining Life (Years)	15 years 6 months
Customer relationships
Finite Lived Intangible Assets [Line Items]
Amortizable intangible assets:	$ 1,210.2	1,198.1	1,097.5
Customer relationships | Weighted Average
Finite Lived Intangible Assets [Line Items]
Weighted-Average Remaining Life (Years)	15 years 7 months 6 days
Trademarks
Finite Lived Intangible Assets [Line Items]
Amortizable intangible assets:	$ 4.5	$ 4.5	$ 1
Trademarks | Weighted Average
Finite Lived Intangible Assets [Line Items]
Weighted-Average Remaining Life (Years)	1 year 3 months 18 days

Goodwill and Intangible Asset_5

Goodwill and Intangible Assets - Summary of Estimated Future Amortization (Detail) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022	Jun. 30, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
2023 (July - December)	$ 39.7
2024	69.4
2025	56.8
2026	48.2
2027	39.2
Thereafter	152.7
Total future amortization expense	$ 406	$ 437.9	$ 373.6

Accrued Expenses - Significant

Accrued Expenses - Significant Components of Accrued Expenses (Details) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022	Jun. 30, 2022
Payables and Accruals [Abstract]
Inventory	$ 229.5	$ 106.9	$ 187.7
Customer rebates	63.3	112.8	56.8
Payroll and employee benefit costs	60.4	118.6	102.4
Selling, general and administrative	106.3	96	88.2
Income taxes	35.8	7.8	38.2
Interest and other	2.7	5.9	3.2
Accrued expenses	$ 498	$ 448	$ 476.5

Financing Arrangements - Schedu

Financing Arrangements - Schedule of Outstanding Debt Presented Net of Unamortized Debt Issuance Costs and Other Financing Arrangements (Detail) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022	Jun. 30, 2022	May 31, 2021	May 10, 2021	Oct. 28, 2019	Oct. 09, 2019
Debt Instrument [Line Items]
Borrowings under revolving lines of credit/term loans, net	$ 67.5	$ 254.9	$ 461.3
Long-term borrowings under senior notes	644.9	644.2	643.7
Long-term debt, net	$ 1,603.2	$ 1,606.4	$ 1,609.6
2028 Term Loan
Debt Instrument [Line Items]
Debt interest rate at period end	7.40%	6.32%	3.31%
2026 Senior Notes
Debt Instrument [Line Items]
Senior notes	$ 297.8	$ 297.4	$ 297.1
Debt interest rate at period end	4.50%					6.375%	4.50%
2029 Senior Notes
Debt Instrument [Line Items]
Senior notes	$ 347.1	346.8	346.6
Debt interest rate at period end	4.125%				4.125%
Revolving Lines of Credit
Debt Instrument [Line Items]
Borrowings under revolving lines of credit/term loans, net	$ 67.5	254.9	461.3
Revolving Lines of Credit | 2026 Revolver | U.S.
Debt Instrument [Line Items]
Total borrowings under revolving lines of credit/term loans	$ 67.5	$ 254.9	$ 455.1
Line of credit facility, interest rate at period end	7.21%	5.45%	2.48%
Revolving Lines of Credit | 2026 Revolver | Canada
Debt Instrument [Line Items]
Total borrowings under revolving lines of credit/term loans	$ 0	$ 0	$ 6.2
Term Loan
Debt Instrument [Line Items]
Current portion	(10)	(10)	(10)
Borrowings under revolving lines of credit/term loans, net	958.3	962.2	965.9
Term Loan | 2028 Term Loan
Debt Instrument [Line Items]
Total borrowings under revolving lines of credit/term loans	$ 968.3	$ 972.2	$ 975.9	$ 1,000

Financing Arrangements - 2021 D

Financing Arrangements - 2021 Debt Refinancing - Additional Information (Detail) - USD ($)	May 19, 2021	Jun. 30, 2023	Dec. 31, 2022	Jun. 30, 2022	May 31, 2021	May 10, 2021
Debt Instrument [Line Items]
Capitalized debt issuance costs	$ 29,000,000
Senior Notes, Matures May 2029
Debt Instrument [Line Items]
Debt instrument, aggregate principal amount		$ 350,000,000			$ 350,000,000	$ 350,000,000
Repayments of Senior Debt	$ 1,300,000,000
Debt interest rate at period end		4.125%				4.125%
Debt redemption price percentage of principal amount	102.438%
2026 ABL Facility | Revolving Lines of Credit
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	$ 1,300,000,000				1,300,000,000
2028 Term Loan
Debt Instrument [Line Items]
Debt interest rate at period end		7.40%	6.32%	3.31%
2028 Term Loan | Term Loan
Debt Instrument [Line Items]
Long-term line of credit		$ 968,300,000	$ 972,200,000	$ 975,900,000	$ 1,000,000,000
2025 Senior Note
Debt Instrument [Line Items]
Debt interest rate at period end	4.875%

Financing Arrangements - 2029 S

Financing Arrangements - 2029 Senior Notes - Additional Information (Detail) - Senior Notes, Matures May 2029 - USD ($)	Jun. 30, 2023	Dec. 31, 2022	Jun. 30, 2022	May 31, 2021	May 10, 2021
Debt Instrument [Line Items]
Debt instrument, aggregate principal amount	$ 350,000,000			$ 350,000,000	$ 350,000,000
Debt instrument interest rate	4.125%				4.125%
Debt issuance costs	$ 2,900,000
Senior notes payable	$ 347,100,000	$ 346,800,000	$ 346,600,000

Financing Arrangements - 2026 A

Financing Arrangements - 2026 ABL - Additional Information (Detail) - USD ($)		3 Months Ended
	May 19, 2021	Jun. 30, 2023	Dec. 31, 2022	Jun. 30, 2022	May 31, 2021
Debt Instrument [Line Items]
Borrowings under revolving lines of credit/term loans, net		$ 67,500,000	$ 254,900,000	$ 461,300,000
Revolving Lines of Credit
Debt Instrument [Line Items]
Borrowings under revolving lines of credit/term loans, net		$ 67,500,000	$ 254,900,000	$ 461,300,000
Revolving Lines of Credit | 2026 ABL Facility
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	$ 1,300,000,000				$ 1,300,000,000
Line of credit facility, unused fees		0.20%
Fixed charge coverage ratio		1%
Debt issuance costs		$ 4,800,000
Standby letters of credit outstanding		$ 15,700,000
Revolving Lines of Credit | U.S. | 2026 ABL Facility
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	1,250,000,000
Revolving Lines of Credit | Canada | 2026 ABL Facility
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	$ 50,000,000
Base Rate | Revolving Lines of Credit | Minimum | 2026 ABL Facility
Debt Instrument [Line Items]
Base rate borrowings	0.25%
Base Rate | Revolving Lines of Credit | Maximum | 2026 ABL Facility
Debt Instrument [Line Items]
Base rate borrowings	0.75%
London Interbank Offered Rate (LIBOR) | Revolving Lines of Credit | Minimum | 2026 ABL Facility
Debt Instrument [Line Items]
Base rate borrowings	1.25%
London Interbank Offered Rate (LIBOR) | Revolving Lines of Credit | Maximum | 2026 ABL Facility
Debt Instrument [Line Items]
Base rate borrowings	1.75%

Financing Arrangements - 2028 T

Financing Arrangements - 2028 Term Loan - Additional Information (Details) - Term Loan - USD ($) $ in Millions	May 19, 2021	Jun. 30, 2023	Dec. 31, 2022	Jun. 30, 2022	May 31, 2021
Term Loan, Matures 2028
Debt Instrument [Line Items]
Long-term line of credit	$ 1,000
Debt instrument, periodic payment	$ 2.5
Term Loan, Matures 2028 | Base Rate | Minimum
Debt Instrument [Line Items]
Base rate borrowings	1.25%
Term Loan, Matures 2028 | Base Rate | Maximum
Debt Instrument [Line Items]
Base rate borrowings	1.50%
Term Loan, Matures 2028 | London Interbank Offered Rate (LIBOR) | Minimum
Debt Instrument [Line Items]
Base rate borrowings	2.25%
Term Loan, Matures 2028 | London Interbank Offered Rate (LIBOR) | Maximum
Debt Instrument [Line Items]
Base rate borrowings	2.50%
2028 Term Loan
Debt Instrument [Line Items]
Long-term line of credit		$ 968.3	$ 972.2	$ 975.9	$ 1,000
Debt issuance costs		$ 11.7

Financing Arrangements - 2026 S

Financing Arrangements - 2026 Senior Notes - Additional Information (Detail) - Senior Notes, Matures November 2026 - USD ($)	Oct. 28, 2019	Oct. 09, 2019	Jun. 30, 2023	Dec. 31, 2022	Jun. 30, 2022
Debt Instrument [Line Items]
Debt instrument, aggregate principal amount		$ 300,000,000	$ 300,000,000
Debt instrument interest rate	6.375%	4.50%	4.50%
Repayments of Senior Debt	$ 300,000,000
Payments of Debt Issuance Costs		$ 4,700,000
Debt issuance costs			$ 2,200,000
Senior notes payable			$ 297,800,000	$ 297,400,000	$ 297,100,000

Financing Arrangements - 2023 S

Financing Arrangements - 2023 Senior Notes -Additional Information (Details) - Senior Notes Due In August Two Thousand Thirty - Subsequent Event - Senior Notes	Jul. 31, 2023 USD ($)
Debt Instrument [Line Items]
Debt instrument, aggregate principal amount	$ 600,000,000
Debt interest rate at period end	6.50%

Leases - Components of Operatin

Leases - Components of Operating Lease Costs Recognized in Condensed Consolidated Statements of Operations Amounts Include Both Continuing and Discontinued Operations (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Leases [Abstract]
Operating lease costs	$ 30.6	$ 27.3	$ 60.6	$ 54.7
Amortization of right-of-use assets	5.2	3.1	9.8	5.8
Interest on lease obligations	1.3	0.5	2.4	1
Variable lease costs	3.1	2.2	5.9	4.4
Total lease costs	$ 40.1	$ 33.2	$ 78.7	$ 65.9

Leases - Summary of Supplementa

Leases - Summary of Supplemental Cash Flow Information Related to Leases (Detail) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Leases [Abstract]
Operating cash flows from operating leases	$ 57.7	$ 51.7
Operating cash flows from finance leases	2.3	0.9
Financing cash flows from finance leases	9.1	4.9
Right-of-use assets obtained in exchange for new finance lease liabilities	25.3	30.5
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 22.5	$ 14.4

Leases - Additional Information

Leases - Additional Information (Detail)	Jun. 30, 2023
Leases [Abstract]
Operating lease, weighted-average remaining lease term	6 years 1 month 6 days
Operating lease, weighted-average discount rate	4.79%
Financing lease, weighted-average remaining lease term	4 years 8 months 12 days
Financing lease, weighted-average discount rate	5.47%

Leases - Finance Lease and Less

Leases - Finance Lease and Lessee, Operating Lease, Liability, Fiscal Year Maturity (Detail) $ in Millions	Jun. 30, 2023 USD ($)
Operating Leases
2023 (July - December)	$ 59.4
2024	112.1
2025	93.7
2026	80.7
2027	64.1
Thereafter	148.2
Total future lease payments	558.2
Imputed interest	(75.9)
Total lease liabilities	482.3
Finance Leases
2023 (July - December)	12.6
2024	25.1
2025	24.8
2026	23.3
2027	18.3
Thereafter	8.5
Total future lease payments	112.6
Imputed interest	(13.3)
Total lease liabilities	$ 99.3

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income (Loss) - Reclassification out of Accumulated Other Comprehensive Income (Detail) $ in Millions	6 Months Ended
	Jun. 30, 2023 USD ($)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	$ 1,904.1
Other comprehensive income before reclassifications	7.4
Reclassifications out of other comprehensive loss	(1)
Ending Balance	2,022.7
AOCI
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	(12.5)	[1]
Ending Balance	(6.1)	[1]
Foreign Currency Translation
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	(22.2)
Other comprehensive income before reclassifications	2.3
Reclassifications out of other comprehensive loss	0
Ending Balance	(19.9)
Derivative Financial Instruments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	9.7
Other comprehensive income before reclassifications	5.1
Reclassifications out of other comprehensive loss	(1)
Ending Balance	$ 13.8
[1]Accumulated Other Comprehensive Income (Loss) (“AOCI”).

Geographic Data - Schedule Of G

Geographic Data - Schedule Of Geographic Information (Detail) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022	Jun. 30, 2022
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 798.1	$ 782.4	$ 664.1
U.S.
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	786.2	770.6	653.8
Canada
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 11.9	$ 11.8	$ 10.3

Fair Value Measurement - Additi

Fair Value Measurement - Additional Information (Detail) - USD ($)	Jun. 30, 2023	May 31, 2021	May 10, 2021	Oct. 09, 2019
2026 Senior Notes
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Debt instrument, aggregate principal amount	$ 300,000,000			$ 300,000,000
2029 Senior Notes
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Debt instrument, aggregate principal amount	350,000,000	$ 350,000,000	$ 350,000,000
Fair Value | Fair Value, Inputs Level 2 | 2026 Senior Notes
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Senior notes	285,000,000
Fair Value | Fair Value, Inputs Level 2 | 2029 Senior Notes
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Senior notes	$ 309,800,000

Financial Derivatives - Additio

Financial Derivatives - Additional Information (Detail) $ in Millions			3 Months Ended			6 Months Ended
	Mar. 16, 2023 USD ($)	Sep. 11, 2019 USD ($) Agreement	Jun. 30, 2023 USD ($)	Mar. 31, 2023	Jun. 30, 2022 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)
Derivative [Line Items]
Number of interest rate swap agreements | Agreement		2
Reclassified gain			$ 0.8		$ 0	$ 1	$ 0
Interest rate cash flow hedge gain			11			11
5-Year Swap
Derivative [Line Items]
Derivative, notional amount	$ 500	$ 250
Term of derivative agreement	5 years	5 years		5 years
Derivative, fixed interest rate		1.49%
Unrealized gain on derivatives	$ 9.9
Fair value of unrealized gain on derivatives	$ 9.9
Designed interest rate swaps			$ 14.8			$ 14.8
5-Year Swap | London Interbank Offered Rate (LIBOR)
Derivative [Line Items]
Derivative, fixed interest rate	1.49%
5-Year Swap | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Derivative [Line Items]
Derivative, fixed interest rate	3%
3-Year Swap
Derivative [Line Items]
Derivative, notional amount		$ 250
Term of derivative agreement		3 years
Derivative, fixed interest rate		1.50%
2028 Term Loan
Derivative [Line Items]
Derivative, notional amount		$ 500

Financial Derivatives - Summary

Financial Derivatives - Summary of Combined Fair Values, Net of Tax of Interest Rate Derivative Instruments (Details) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022	Jun. 30, 2022
Designated as Hedging Instrument | Interest Rate Swaps | Fair Value, Inputs Level 2
Derivative [Line Items]
Designed interest rate swaps	$ 14.8	$ 9.7	$ 6.3

Financial Derivatives - Schedul

Financial Derivatives - Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Derivative [Line Items]
Designated interest rate swaps	$ 7.9	$ 2.6	$ 5.1	$ 10.4
Designated as Hedging Instrument | Interest Rate Swaps
Derivative [Line Items]
Designated interest rate swaps	$ 7.9	$ 2.6	$ 5.1	$ 10.4

Subsequent Events (Details)

Subsequent Events (Details) - USD ($) $ in Millions		1 Months Ended	3 Months Ended		6 Months Ended
		Jul. 31, 2023	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Subsequent Event [Line Items]
Stock repurchased during period	[1]		$ 52.2	$ 225.1	$ 75.3	$ 338.1
Subsequent Event | Repurchase Letter Agreement | Preferred Stock
Subsequent Event [Line Items]
Stock repurchased during period (in shares)		400,000
Stock repurchased during period		$ 805.4
Dividends payable		$ 0.9
[1]See Note 7 for additional information.

Uncategorized Items - becn-2023

Label	Element	Value
Income Taxes Paid, Net	us-gaap_IncomeTaxesPaidNet	$ 18,600,000