Republic Services (RSG) 10-Q 30 Apr 24 2024 Q1 Quarterly report Financial data

Cover Page

Cover Page - shares	3 Months Ended
	Mar. 31, 2024	Apr. 23, 2024
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2024
Document Transition Report	false
Entity File Number	1-14267
Entity Registrant Name	REPUBLIC SERVICES, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	65-0716904
Entity Address, Address Line One	18500 North Allied Way
Entity Address, City or Town	Phoenix,
Entity Address, State or Province	AZ
Entity Address, Postal Zip Code	85054
City Area Code	480
Local Phone Number	627-2700
Title of 12(b) Security	Common Stock, par value $0.01 per share
Trading Symbol	RSG
Security Exchange Name	NYSE
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		314,932,459
Amendment Flag	false
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q1
Entity Central Index Key	0001060391
Current Fiscal Year End Date	--12-31

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 91.6	$ 140
Accounts receivable, less allowance for doubtful accounts and other of $82.6 and $83.2, respectively	1,763	1,768.4
Prepaid expenses and other current assets	419	472.6
Total current assets	2,273.6	2,381
Restricted cash and marketable securities	143.3	163.6
Property and equipment, net	11,310.5	11,350.9
Goodwill	15,852.3	15,834.5
Other intangible assets, net	482.6	496.2
Other assets	1,319.4	1,183.9
Total assets	31,381.7	31,410.1
Current liabilities:
Accounts payable	1,179.2	1,411.5
Notes payable and current maturities of long-term debt	1,431.9	932.3
Deferred revenue	472.2	467.3
Accrued landfill and environmental costs, current portion	141.2	141.6
Accrued interest	106.2	104.1
Other accrued liabilities	995.2	1,171.5
Total current liabilities	4,325.9	4,228.3
Long-term debt, net of current maturities	11,400.1	11,887.1
Accrued landfill and environmental costs, net of current portion	2,306.5	2,281
Deferred income taxes and other long-term tax liabilities, net	1,577.6	1,526.8
Insurance reserves, net of current portion	348.4	348.8
Other long-term liabilities	602.6	594.6
Commitments and contingencies
Stockholders’ equity:
Preferred stock, par value $0.01 per share; 50 shares authorized; none issued	0	0
Common stock, par value $0.01 per share; 750 shares authorized; 321.2 and 320.7 issued including shares held in treasury, respectively	3.2	3.2
Additional paid-in capital	2,916	2,900.8
Retained earnings	8,717.9	8,433.9
Treasury stock, at cost; 6.3 and 6.1 shares, respectively	(812)	(783.5)
Accumulated other comprehensive loss, net of tax	(5.3)	(12.1)
Total Republic Services, Inc. stockholders’ equity	10,819.8	10,542.3
Non-controlling interests in consolidated subsidiary	0.8	1.2
Total stockholders’ equity	10,820.6	10,543.5
Total liabilities and stockholders’ equity	$ 31,381.7	$ 31,410.1

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Current assets:
Allowance for doubtful accounts	$ 82.6	$ 83.2
Stockholders’ equity:
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	50,000,000	50,000,000
Preferred stock, shares issued (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	750,000,000	750,000,000
Common stock, shares issued (in shares)	321,200,000	320,700,000
Treasury stock (in shares)	6,300,000	6,100,000

Unaudited Consolidated Statemen

Unaudited Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Income Statement [Abstract]
Revenue	$ 3,861,700	$ 3,581,100
Expenses:
Cost of operations	2,283,200	2,169,500
Depreciation, amortization and depletion	399,200	358,700
Accretion	26,600	24,100
Selling, general and administrative	414,000	379,200
Restructuring charges	5,900	5,500
Operating income	732,800	644,100
Interest expense	(139,300)	(126,700)
Loss on extinguishment of debt	0	(200)
(Loss) income from unconsolidated equity method investments	(8,700)	1,000
Interest income	1,500	1,400
Other income, net	12,600	2,500
Income before income taxes	598,900	522,100
Provision for income taxes	145,200	138,200
Net income	453,700	383,900
Net loss attributable to non-controlling interests in consolidated subsidiary	100	0
Net income attributable to Republic Services, Inc.	$ 453,794	$ 383,852
Basic earnings per share attributable to Republic Services, Inc. stockholders:
Basic earnings per share (in dollars per share)	$ 1.44	$ 1.21
Weighted average common shares outstanding (in shares)	315,294	316,712
Diluted earnings per share attributable to Republic Services, Inc. stockholders:
Diluted earnings per share (in dollars per share)	$ 1.44	$ 1.21
Weighted average common and common equivalent shares outstanding (in shares)	315,693	317,142
Cash dividends per common share (in dollars per share)	$ 0.535	$ 0.495

Unaudited Consolidated Statem_2

Unaudited Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 453.7	$ 383.9
Hedging activity:
Realized income reclassified into earnings	(2.1)	(2.6)
Unrealized gain	5.1	5.2
Pension activity:
Change in funded status of pension plan obligations	0	0.2
Foreign currency activity:
Unrealized gain on foreign currency translation	3.8	0
Other comprehensive income, net of tax	6.8	2.8
Comprehensive income	460.5	386.7
Comprehensive loss attributable to non-controlling interests	0.1	0
Comprehensive income attributable to Republic Services, Inc.	$ 460.6	$ 386.7

Unaudited Consolidated Statem_3

Unaudited Consolidated Statements of Stockholders' Equity - USD ($) shares in Millions, $ in Millions	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Loss, Net of Tax	Non-controlling Interests In Consolidated Subsidiary
Balance (in shares) at Dec. 31, 2022		320.3
Balance (in shares) at Dec. 31, 2022					(4.2)
Balance at beginning of period at Dec. 31, 2022	$ 9,686.8	$ 3.2	$ 2,843.2	$ 7,356.3	$ (504.6)	$ (12.1)	$ 0.8
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	383.9			383.9
Other comprehensive income	2.8					2.8
Cash dividends declared	(156.5)			(156.5)
Issuances of common stock (in shares)		0.3			0.1
Issuances of common stock	(11)		2.9		$ (13.9)
Stock-based compensation	11.3		12.3	(1)
Balance (in shares) at Mar. 31, 2023		320.6
Balance (in shares) at Mar. 31, 2023					(4.3)
Balance at end of period at Mar. 31, 2023	$ 9,917.3	$ 3.2	2,858.4	7,582.7	$ (518.5)	(9.3)	0.8
Balance (in shares) at Dec. 31, 2023		320.7
Balance (in shares) at Dec. 31, 2023	(6.1)				(6.1)
Balance at beginning of period at Dec. 31, 2023	$ 10,543.5	$ 3.2	2,900.8	8,433.9	$ (783.5)	(12.1)	1.2
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	453.7			453.8			(0.1)
Other comprehensive income	6.8					6.8
Cash dividends declared	(168.5)			(168.5)
Issuances of common stock (in shares)		0.5			0.2
Issuances of common stock	(25.3)		3.2		$ (28.5)
Stock-based compensation	10.7		12	(1.3)
Distributions paid	$ (0.3)						(0.3)
Balance (in shares) at Mar. 31, 2024		321.2
Balance (in shares) at Mar. 31, 2024	(6.3)				(6.3)
Balance at end of period at Mar. 31, 2024	$ 10,820.6	$ 3.2	$ 2,916	$ 8,717.9	$ (812)	$ (5.3)	$ 0.8

Unaudited Consolidated Statem_4

Unaudited Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Cash provided by operating activities:
Net income	$ 453.7	$ 383.9
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation, amortization, depletion and accretion	425.8	382.8
Non-cash interest expense	22	24.7
Stock-based compensation	11.2	11.6
Deferred tax provision	47.5	14.5
Provision for doubtful accounts, net of adjustments	7.3	7.8
Loss on extinguishment of debt	0	0.2
Gain on disposition of assets and asset impairments, net	(0.1)	(3.8)
Loss (gain) from unconsolidated equity method investments	8.7	(1)
Other non-cash items	(0.1)	(1.6)
Change in assets and liabilities, net of effects from business acquisitions and divestitures:
Accounts receivable	(1.1)	(3.3)
Prepaid expenses and other assets	18.1	87.2
Accounts payable	(1.2)	(71.1)
Capping, closure and post-closure expenditures	(8.9)	(8.8)
Remediation expenditures	(9.8)	(11.6)
Other liabilities	(161.6)	(126.2)
Proceeds for retirement of certain hedging relationships	0	2.4
Cash provided by operating activities	811.5	687.7
Cash used in investing activities:
Purchases of property and equipment	(514.5)	(378.6)
Proceeds from sales of property and equipment	2.4	6
Cash used in acquisitions and investments, net of cash and restricted cash acquired	(166.3)	(290.9)
Cash paid for business divestitures	0	(0.7)
Purchases of restricted marketable securities	(12)	(4.5)
Sales of restricted marketable securities	11.5	4.4
Other	0	11
Cash used in investing activities	(678.9)	(653.3)
Cash used in financing activities:
Proceeds from credit facilities and notes payable, net of fees	6,436.8	6,675.5
Proceeds from issuance of senior notes, net of discount and fees	0	1,183.6
Payments of credit facilities and notes payable	(6,440.8)	(7,729.5)
Issuances of common stock, net	(25.3)	(11)
Cash dividends paid	(168.3)	(156.4)
Distributions paid to non-controlling interests in consolidated subsidiary	(0.3)	0
Contingent consideration payments	(3.3)	(4.2)
Cash used in financing activities	(201.2)	(42)
Effect of foreign exchange rate changes on cash	(0.5)	0
Increase in cash, cash equivalents, restricted cash and restricted cash equivalents	(69.1)	(7.6)
Cash, cash equivalents, restricted cash and restricted cash equivalents at beginning of period	227.5	214.3
Cash, cash equivalents, restricted cash and restricted cash equivalents at end of period	$ 158.4	$ 206.7

Basis of Presentation

Basis of Presentation	3 Months Ended
	Mar. 31, 2024
Accounting Policies [Abstract]
BASIS OF PRESENTATION	BASIS OF PRESENTATION Republic Services, Inc., a Delaware corporation, and its consolidated subsidiaries (also referred to collectively as Republic, the Company, we, us, or our), is one of the largest providers of environmental services in the United States, as measured by revenue. Our senior management evaluates, oversees and manages the financial performance of our operations through three field groups, referred to as Group 1, Group 2 and Group 3. Group 1 is our recycling and waste business operating primarily in geographic areas located in the western United States. Group 2 is our recycling and waste business operating primarily in geographic areas located in the southeastern and mid-western United States, the eastern seaboard of the United States, and Canada. Group 3 is our environmental solutions business operating primarily in geographic areas located across the United States and Canada. These groups represent our reportable segments, which each provide integrated environmental services, including but not limited to collection, transfer, recycling, and disposal. The unaudited consolidated financial statements include the accounts of Republic Services, Inc. and its wholly owned and majority owned subsidiaries in accordance with accounting principles generally accepted in the United States of America (U.S. GAAP). We account for investments in entities in which we do not have a controlling financial interest under the equity method of accounting or, for investments that do not meet the criteria to be accounted for under the equity method, we reflect these investments at their fair value when it is readily determinable. If fair value is not readily determinable, we use an alternative measurement approach. All material intercompany accounts and transactions have been eliminated in consolidation. We have prepared these unaudited consolidated financial statements pursuant to the rules and regulations of the Securities and Exchange Commission (SEC). Certain information related to our organization, significant accounting policies and footnote disclosures normally included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted. In the opinion of management, these financial statements include all adjustments that, unless otherwise disclosed, are of a normal recurring nature and necessary for a fair presentation of the financial position, results of operations and cash flows for the periods presented. Operating results for interim periods are not necessarily indicative of the results you can expect for a full year. You should read these financial statements in conjunction with our audited consolidated financial statements and notes thereto appearing in our Annual Report on Form 10-K for the fiscal year ended December 31, 2023. For comparative purposes, certain prior year amounts have been reclassified to conform to the current year presentation and are not material to our consolidated financial statements. All dollar amounts in tabular presentations are in millions, except per share amounts and unless otherwise noted. Management’s Estimates and Assumptions In preparing our financial statements, we make numerous estimates and assumptions that affect the amounts reported in these financial statements and accompanying notes. We must make these estimates and assumptions because certain information we use is dependent on future events, cannot be calculated with a high degree of precision from data available or simply cannot be readily calculated based on generally accepted methodologies. In preparing our financial statements, the more critical and subjective areas that deal with the greatest amount of uncertainty relate to our accounting for our long-lived assets, including recoverability, landfill development costs and final capping, closure and post-closure costs; our valuation allowances for accounts receivable and deferred tax assets; our liabilities for potential litigation, claims and assessments; our liabilities for environmental remediation, multiemployer pension plans, employee benefit plans, deferred taxes, uncertain tax positions and insurance reserves; and our estimates of the fair values of assets acquired and liabilities assumed in any acquisition. Each of these items is discussed in more detail in our description of our significant accounting policies in Note 2, Summary of Significant Accounting Policies , of the Notes to Consolidated Financial Statements in our Annual Report on Form 10-K for the fiscal year ended December 31, 2023. Our actual results may differ significantly from our estimates. New Accounting Pronouncements Accounting Standards Updates Issued but not yet Adopted Climate-Related Disclosures In March 2024, the SEC adopted Final Rule 33-11275 and 34-99678 - The Enhancement and Standardization of Climate-Related Disclosures for Investors . The rules require registrants to provide standardized disclosures related to material climate-related risks, governance and risk management strategies, and the financial impact of severe weather events and material Scope 1 and 2 greenhouse gas emissions. The rules require implementation in phases between 2025 and 2033. In April 2024, the SEC announced that it would voluntarily stay its final climate disclosure rules pending judicial review. The Company is currently evaluating the impact of the rules on its future consolidated financial statements. Codification Amendments in Response to the SEC's Disclosure Update and Simplification Initiative In October 2023, the FASB issued ASU 2023-06 to modify the disclosure or presentation requirements of a variety of topics, which will allow users to more easily compare entities subject to the SEC's existing disclosures with those entities that were not previously subject to the SEC's requirements, and to align the requirements in the FASB accounting standard codification with the SEC's regulations. The Company is currently evaluating the provisions of the amendments and the impact on its future consolidated financial statements. Improvements to Reportable Segment Disclosures In November 2023, the FASB issued ASU 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures (ASU 2023-07) . ASU 2023-07 improves the reportable segment disclosure requirements, primarily through enhanced disclosures about significant segment expenses. The amendments in this update are effective for fiscal years beginning after December 15, 2023 and interim periods beginning after December 14, 2024. We are currently assessing the effect this guidance may have on our consolidated financial statements. Improvements to Income Tax Disclosures In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures (ASU 2023-09). ASU 2023-09 requires entities to provide additional information in the rate reconciliation and additional disclosures about income taxes paid. The amendments in this update are effective for fiscal years beginning after December 15, 2024. We are currently assessing the effect this guidance may have on our consolidated financial statements.

Business Acquisitions, Investme

Business Acquisitions, Investments and Restructuring Charges	3 Months Ended
	Mar. 31, 2024
Business Combination and Asset Acquisition [Abstract]
BUSINESS ACQUISITIONS, INVESTMENTS AND RESTRUCTURING CHARGES	BUSINESS ACQUISITIONS, INVESTMENTS AND RESTRUCTURING CHARGES Acquisitions We acquired various environmental services businesses during the three months ended March 31, 2024 and 2023. The aggregate purchase price paid for these business acquisitions and the allocations of the aggregate purchase price follows: 2024 2023 Purchase price: Cash used in acquisitions, net of cash acquired of $0.8 and $9.5, respectively $ 41.0 $ 221.9 Holdbacks — 2.2 Total $ 41.0 $ 224.1 Allocated as follows: Accounts receivable $ 1.8 $ 14.2 Prepaid expenses — 0.8 Property and equipment 20.6 31.6 Inventory 0.1 0.9 Accounts payable (0.4) (5.3) Deferred revenue (0.2) — Deferred income tax liabilities (1.3) (9.2) Other liabilities (0.2) (3.7) Fair value of tangible assets acquired and liabilities assumed 20.4 29.3 Excess purchase price to be allocated $ 20.6 $ 194.8 Excess purchase price allocated as follows: Other intangible assets $ 4.2 $ 23.4 Goodwill 16.4 171.4 Total allocated $ 20.6 $ 194.8 Certain of the purchase price allocations are preliminary and based on information existing at the acquisition dates. Accordingly, the purchase price allocations are subject to change. For the acquisitions that closed during the three months ended March 31, 2024, we expect that a majority of the goodwill and intangible assets recognized as a result of these acquisitions will not be deductible for tax purposes. These acquisitions are not material to the Company's results of operations, individually or in the aggregate. As a result, no pro forma financial information is provided. In November 2023, we acquired all of the issued and outstanding capital stock or other ownership interests of Advanced Chemical Transport LLC (ACT). ACT's environmental solutions operations are primarily located in the western United States and provide us with additional growth opportunities in our environmental solutions line of business. The purchase price allocation is preliminary and remains subject to revision as additional information is obtained about the facts and circumstances that existed at the valuation date. The preliminary allocation of purchase price, including the value assigned to tangible and intangible assets acquired, is based on the best estimates of management and is subject to revision based on the final valuations. We expect our final valuations to be completed in the fourth quarter of 2024. In December 2023, we acquired all of the issued and outstanding membership and other equity interests of Central Texas Refuse, LLC and an affiliate thereof (CTR). CTR's vertically integrated recycling and waste services operations are located in and around Austin, Texas and provide us with the opportunity to re-enter the high growth Austin market. The purchase price allocation is preliminary and remains subject to revision as additional information is obtained about the facts and circumstances that existed at the valuation date. The preliminary allocation of purchase price, including the value assigned to tangible and intangible assets acquired as well as certain landfill and environmental liabilities assumed, is based on the best estimates of management and is subject to revision based on the final valuations. We expect our final valuations to be completed in the fourth quarter of 2024. Investments In 2024 , we acquired a non-controlling equity interest in a joint venture with a landfill gas-to-energy developer to construct a renewable natural gas project at one of our landfill locations in Illinois. As of March 31, 2024 , we had contributed $29 million in the joint venture. The investment is accounted for under the equity method of accounting. In 2024 and 2023, we acquired non-controlling equity interests in certain limited liability companies that qualified for investment tax credits under Section 48 of the Internal Revenue Code. In exchange for our non-controlling interests, we made capital contributions of $87.3 million and $1.5 million, which were recorded to other assets in our March 31, 2024 and 2023 consolidated balance sheets, respectively. During the three months ended March 31, 2024 , we decreased the carrying value of these investments by $9.2 million and during the three months ended March 31, 2023, we increased the carrying value of these investments by $1.3 million, as a result of cash distributions and our share of income and loss pursuant to the terms of the limited liability company agreements. Additionally, our tax provisions reflect benefits of approximately $8 million for the three months ended March 31, 2024 due to the tax credits related to these investments, compared to no benefits for the three months ended March 31, 2023. For further discussion of the income tax benefits, refer to Note 11, Income Taxes, in Part II, Item 8 of our Annual Report on Form 10-K for the year ended December 31, 2023. Restructuring Charges During the three months ended March 31, 2024 and 2023, we incurred restructuring charges of $5.9 million and $5.5 million, respectively. These charges related to the redesign of our asset management, and customer and order management software systems. During the three months ended March 31, 2024 and 2023, we paid $5.7 million and $5.0 million, respectively, related to these restructuring efforts.

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets, Net	3 Months Ended
	Mar. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
GOODWILL AND OTHER INTANGIBLE ASSETS, NET	GOODWILL AND OTHER INTANGIBLE ASSETS, NET Goodwill A summary of the activity and balances in goodwill accounts by reporting segment follows: Balance as of December 31, 2023 Acquisitions Divestitures Adjustments to Acquisitions and Other Balance as of March 31, 2024 Group 1 $ 7,312.4 $ 1.2 $ — $ 1.0 $ 7,314.6 Group 2 6,445.5 0.3 — 0.3 6,446.1 Group 3 2,076.6 14.9 — 0.1 2,091.6 Total $ 15,834.5 $ 16.4 $ — $ 1.4 $ 15,852.3 Adjustments to acquisitions during the three months ended March 31, 2024 primarily related to changes in our valuation of tangible assets acquired and certain environmental liabilities assumed as a result of obtaining new information regarding the acquisitions that closed in 2023. Other Intangible Assets, Net Other intangible assets, net, include values assigned to customer relationships, non-compete agreements and trade names, and are amortized over periods ranging from 1 to 15 years. A summary of the activity and balances by intangible asset type follows: Gross Intangible Assets Accumulated Amortization Balance as of December 31, 2023 Acquisitions Adjustments and Other Balance as of March 31, 2024 Balance as of December 31, 2023 Additions Charged to Expense Adjustments and Other Balance as of March 31, 2024 Other Intangible Assets, Net as of March 31, 2024 Customer relationships $ 631.7 $ 3.3 $ — $ 635.0 $ (165.7) $ (15.3) $ — $ (181.0) $ 454.0 Non-compete agreements 30.4 0.9 — 31.3 (15.7) (1.5) — (17.2) 14.1 Other intangible assets 23.2 — — 23.2 (7.7) (1.0) — (8.7) 14.5 Total $ 685.3 $ 4.2 $ — $ 689.5 $ (189.1) $ (17.8) $ — $ (206.9) $ 482.6

Other Assets

Other Assets	3 Months Ended
	Mar. 31, 2024
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
OTHER ASSETS	OTHER ASSETS Prepaid Expenses and Other Current Assets A summary of prepaid expenses and other current assets as of March 31, 2024 and December 31, 2023 follows: 2024 2023 Prepaid expenses $ 124.3 $ 123.0 Inventories 101.4 97.3 Other non-trade receivables 73.5 63.2 Income taxes receivable 47.4 126.3 Reinsurance receivable 35.4 35.4 Prepaid fees for cloud-based hosting arrangements, current 24.6 17.0 Derivative and hedging assets 5.1 4.2 Other current assets 7.3 6.2 Total $ 419.0 $ 472.6 Other Assets A summary of other assets as of March 31, 2024 and December 31, 2023 follows: 2024 2023 Investments $ 584.2 $ 469.4 Operating right-of-use lease assets 228.9 238.1 Deferred compensation plan 119.6 112.7 Reinsurance receivable 91.8 92.1 Derivative and hedging assets 87.9 74.1 Deferred contract costs and sales commissions 82.1 82.5 Prepaid fees and capitalized implementation costs for cloud-based hosting arrangements 79.9 67.6 Amounts recoverable for capping, closure and post-closure obligations 22.5 21.9 Deferred financing costs 3.3 3.6 Other 19.2 21.9 Total $ 1,319.4 $ 1,183.9

Other Liabilities

Other Liabilities	3 Months Ended
	Mar. 31, 2024
Other Liabilities Disclosure [Abstract]
OTHER LIABILITIES	OTHER LIABILITIES Other Accrued Liabilities A summary of other accrued liabilities as of March 31, 2024 and December 31, 2023 follows: 2024 2023 Accrued payroll and benefits $ 225.5 $ 350.5 Insurance reserves, current 215.0 216.6 Accrued dividends 168.5 168.3 Accrued fees and taxes 167.8 182.9 Operating right-of-use lease liabilities, current 53.0 54.8 Ceded insurance reserves, current 35.4 35.4 Accrued professional fees and legal settlement reserves 19.5 17.9 Derivative and hedging liabilities 7.2 8.3 Other 103.3 136.8 Total $ 995.2 $ 1,171.5 Other Long-Term Liabilities A summary of other long-term liabilities as of March 31, 2024 and December 31, 2023 follows: 2024 2023 Operating right-of-use lease liabilities $ 185.8 $ 194.9 Deferred compensation plan liability 122.1 114.7 Ceded insurance reserves 91.8 92.1 Derivative and hedging liabilities 86.0 71.3 Contingent purchase price and acquisition holdbacks 59.3 59.1 Withdrawal liability - multiemployer pension funds 19.5 19.6 Other 38.1 42.9 Total $ 602.6 $ 594.6

Landfill and Environmental Cost

Landfill and Environmental Costs	3 Months Ended
	Mar. 31, 2024
Environmental Remediation Obligations [Abstract]
LANDFILL AND ENVIRONMENTAL COSTS	LANDFILL AND ENVIRONMENTAL COSTS As of March 31, 2024, we owned or operated 207 active landfills with total available disposal capacity estimated to be 5.1 billion in-place cubic yards. Additionally, we had post-closure responsibility for 126 closed landfills. Accrued Landfill and Environmental Costs A summary of accrued landfill and environmental liabilities as of March 31, 2024 and December 31, 2023 follows: 2024 2023 Landfill final capping, closure and post-closure liabilities $ 1,967.9 $ 1,937.2 Environmental remediation 479.8 485.4 Total accrued landfill and environmental costs 2,447.7 2,422.6 Less: current portion (141.2) (141.6) Long-term portion $ 2,306.5 $ 2,281.0 Final Capping, Closure and Post-Closure Costs The following table summarizes the activity in our asset retirement obligation liabilities, which includes liabilities for final capping, closure and post-closure, for the three months ended March 31, 2024 and 2023: 2024 2023 Asset retirement obligation liabilities, beginning of year $ 1,937.2 $ 1,786.4 Non-cash additions 14.3 15.0 Asset retirement obligation adjustments (1.3) (8.4) Payments (8.9) (8.8) Accretion expense 26.6 24.1 Asset retirement obligation liabilities, end of period 1,967.9 1,808.3 Less: current portion (72.4) (73.9) Long-term portion $ 1,895.5 $ 1,734.4 We review annually, in the fourth quarter, and update as necessary, our estimates of asset retirement obligation liabilities. However, if there are significant changes in the facts and circumstances related to a site during the year, we will update our assumptions prospectively in the period that we know all the relevant facts and circumstances and make adjustments as appropriate. Landfill Operating Expenses In the normal course of business, we incur various operating costs associated with environmental compliance. These costs include, among other things, leachate treatment and disposal, methane gas and groundwater monitoring, systems maintenance, interim cap maintenance, costs associated with the application of daily cover materials, and the legal and administrative costs of ongoing environmental compliance. These costs are expensed as cost of operations in the periods in which they are incurred. Environmental Remediation Liabilities We accrue for remediation costs when they become probable and can be reasonably estimated. There can sometimes be a range of reasonable estimates of the costs associated with remediation of a site. In these cases, we use the amount within the range that constitutes our best estimate. If no amount within the range appears to be a better estimate than any other, we use the amount that is at the low end of such range. It is reasonably possible that we will need to adjust the liabilities recorded for remediation to reflect the effects of new or additional information, to the extent such information impacts the costs, timing or duration of the required actions. If we used the reasonably possible high ends of our ranges, our aggregate potential remediation liability as of March 31, 2024 would be approximately $375 million higher than the amount recorded. Future changes in our estimates of the cost, timing or duration of the required actions could have a material adverse effect on our consolidated financial position, results of operations and cash flows. The following table summarizes the activity in our environmental remediation liabilities for the three months ended March 31, 2024 and 2023: 2024 2023 Environmental remediation liabilities, beginning of year $ 485.4 $ 487.5 Payments (9.8) (11.6) Accretion expense (non-cash interest expense) 4.2 4.6 Environmental remediation liabilities, end of period 479.8 480.5 Less: current portion (68.8) (61.3) Long-term portion $ 411.0 $ 419.2 Bridgeton Landfill. During the three months ended March 31, 2024, we paid $2.4 million related to management and monitoring of the remediation area for our closed Bridgeton Landfill in Missouri. We continue to work with state and federal regulatory agencies on our remediation efforts. From time to time, this may require us to modify our future operating timeline and procedures, which could result in changes to our expected liability. As of March 31, 2024, the remediation liability recorded for this site was $71.2 million, of which approximately $11 million is expected to be paid during the remainder of 2024. West Lake Landfill Superfund Site . Our subsidiary Bridgeton Landfill, LLC is one of several currently designated Potentially Responsible Parties for the West Lake Landfill Superfund site (West Lake) in Missouri. On September 27, 2018, the United States Environmental Protection Agency (EPA) issued a Record of Decision Amendment for West Lake that includes a total undiscounted cost estimate of $229 million over a four

Debt

Debt	3 Months Ended
	Mar. 31, 2024
Debt Disclosure [Abstract]
DEBT	DEBT The carrying value of our credit facilities, finance leases and long-term debt as of March 31, 2024 and December 31, 2023 is listed in the following table, and is adjusted for the fair value of interest rate swaps, unamortized discounts, deferred issuance costs and the unamortized portion of adjustments to fair value recorded in purchase accounting. Original issue discounts, deferred issuance costs, and adjustments to fair value recorded in purchase accounting are amortized to interest expense over the term of the applicable instrument using the effective interest method. March 31, 2024 December 31, 2023 Maturity Interest Rate Principal Adjustments Carrying Value Principal Adjustments Carrying Value Credit facilities: Uncommitted Credit Facility Variable $ 24.2 $ — $ 24.2 $ — $ — $ — $3.5 billion - August 2026 Variable 162.9 — 162.9 297.1 — 297.1 Term Loan Variable 500.0 — 500.0 500.0 — 500.0 Commercial Paper Variable 509.0 (0.7) 508.3 496.0 (0.7) 495.3 Senior notes: August 2024 2.500 900.0 (0.7) 899.3 900.0 (1.2) 898.8 March 2025 3.200 500.0 (0.7) 499.3 500.0 (0.9) 499.1 November 2025 0.875 350.0 (1.1) 348.9 350.0 (1.2) 348.8 July 2026 2.900 500.0 (1.5) 498.5 500.0 (1.6) 498.4 November 2027 3.375 650.0 (2.3) 647.7 650.0 (2.5) 647.5 May 2028 3.950 800.0 (8.4) 791.6 800.0 (8.9) 791.1 April 2029 4.875 750.0 (6.9) 743.1 750.0 (6.9) 743.1 March 2030 2.300 600.0 (4.4) 595.6 600.0 (4.5) 595.5 February 2031 1.450 650.0 (6.0) 644.0 650.0 (6.2) 643.8 February 2032 1.750 750.0 (5.2) 744.8 750.0 (5.4) 744.6 March 2033 2.375 700.0 (6.3) 693.7 700.0 (6.5) 693.5 December 2033 5.000 650.0 (9.3) 640.7 650.0 (8.9) 641.1 April 2034 5.000 800.0 (10.5) 789.5 800.0 (10.7) 789.3 March 2035 6.086 181.9 (11.3) 170.6 181.9 (11.5) 170.4 March 2040 6.200 399.9 (3.2) 396.7 399.9 (3.3) 396.6 May 2041 5.700 385.7 (4.7) 381.0 385.7 (4.7) 381.0 March 2050 3.050 400.0 (6.8) 393.2 400.0 (6.8) 393.2 Debentures: September 2035 7.400 148.1 (28.5) 119.6 148.1 (28.8) 119.3 Tax-exempt: 2024 - 2054 3.700 - 4.900 1,389.1 (9.3) 1,379.8 1,289.1 (8.5) 1,280.6 Finance leases: 2024 - 2063 0.806 - 9.750 259.0 — 259.0 251.3 — 251.3 Total Debt $ 12,959.8 $ (127.8) 12,832.0 $ 12,949.1 $ (129.7) 12,819.4 Less: current portion (1,431.9) (932.3) Long-term portion $ 11,400.1 $ 11,887.1 Credit Facilities Uncommitted Credit Facility In January 2022, we entered into a $200.0 million unsecured uncommitted revolving credit facility (the Uncommitted Credit Facility). The Uncommitted Credit Facility bears interest at an annual percentage rate to be agreed upon by both parties. Borrowings under the Uncommitted Credit Facility can be used for working capital, letters of credit, and other general corporate purposes. The agreement governing our Uncommitted Credit Facility requires us to comply with certain covenants. The Uncommitted Credit Facility may be terminated by either party at any time. As of March 31, 2024, we had $24.2 million of borrowings outstanding under our Uncommitted Credit Facility. As of December 31, 2023, we had no borrowings outstanding under our Uncommitted Credit Facility. The Credit Facility In August 2021, we entered into a $3.0 billion unsecured revolving credit facility (as amended, the Credit Facility). Borrowings under the Credit Facility mature in August 2026. As permitted by the Credit Facility, we have the right to request two one-year extensions of the maturity date, but none of the lenders are committed to participate in such extensions. The Credit Facility also includes a feature that allows us to increase availability, at our option, by an aggregate amount of up to $1.0 billion through increased commitments from existing lenders or the addition of new lenders. In October 2023, we completed an upsize of the Credit Facility to $3.5 billion. In February 2023, we entered into Amendment No. 1 to the Credit Facility to add our subsidiary, USE Canada Holdings, Inc. (the Canadian Borrower), as an additional borrower under the Credit Facility, and provided that the aggregate of (i) all loans to the Canadian Borrower and (ii) all loans denominated in Canadian dollars cannot exceed $500.0 million (the Canadian Sublimit). In October 2023, we entered into Amendment No. 2 to the Credit Facility which increased the Canadian Sublimit to $1.0 billion. The Canadian Sublimit is part of, and not in addition to, the aggregate commitments under the Credit Facility. Borrowings under the Credit Facility in United States dollars bear interest at a Base Rate, a daily floating SOFR or a term SOFR plus a current applicable margin of 0.910% based on our Debt Ratings (all as defined in the Credit Facility agreement). The Canadian dollar-denominated loans bear interest based on the Canadian Prime Rate or the Canadian Dollar Offered Rate plus a current applicable margin of 0.910% based on our Debt Ratings. As of March 31, 2024 and December 31, 2023, C$220.6 million and C$201.5 million, respectively, were outstanding against the Canadian Sublimit. The weighted average interest rate for borrowings outstanding as of March 31, 2024 was 6.225%. The Credit Facility is subject to facility fees based on applicable rates defined in the Credit Facility agreement and the aggregate commitment, regardless of usage. The Credit Facility can be used for working capital, capital expenditures, acquisitions, letters of credit and other general corporate purposes. The Credit Facility agreement requires us to comply with financial and other covenants. We may pay dividends and repurchase common stock if we are in compliance with these covenants. We had $162.9 million and $297.1 million of borrowings outstanding under the Credit Facility as of March 31, 2024 and December 31, 2023, respectively. We had $332.8 million and $336.5 million of letters of credit outstanding under the Credit Facility as of March 31, 2024 and December 31, 2023, respectively. We also had $508.3 million and $495.3 million of principal borrowings outstanding (net of related discount on issuance) under the commercial paper program as of March 31, 2024 and December 31, 2023, respectively. As a result, availability under our Credit Facility was $2,495.3 million and $2,371.2 million as of March 31, 2024 and December 31, 2023, respectively. Term Loan Facility On April 29, 2022, we entered into a $1.0 billion term loan facility (the Term Loan Facility). The Term Loan Facility will mature on April 29, 2025 and bears interest at a base rate or a forward-looking SOFR, plus an applicable margin based on our debt ratings. The weighted average interest rate for borrowings outstanding as of March 31, 2024 was 6.227%. We may prepay, without penalty, all or any part of the borrowings under the Term Loan Facility at any time. We had $500.0 million of borrowings outstanding under the Term Loan Facility as of both March 31, 2024 and December 31, 2023. Commercial Paper Program In May 2022, we entered into a commercial paper program for the issuance and sale of unsecured commercial paper in an aggregate principal amount not to exceed $500.0 million outstanding at any one time (the Commercial Paper Cap). In October 2023, the Commercial Paper Cap was increased to $1.5 billion. The weighted average interest rate for borrowings outstanding as of March 31, 2024 was 5.483% with a weighted average maturity of 18 days. We had $509.0 million and $496.0 million in aggregate principal amount of commercial paper issued and outstanding under the program as of March 31, 2024 and December 31, 2023, respectively. In the event of a failed re-borrowing, we currently have availability under our Credit Facility to fund the commercial paper program until it is re-borrowed successfully. Accordingly, we have classified these borrowings as long-term in our consolidated balance sheet as of March 31, 2024. Senior Notes In March 2023, we issued $400.0 million of 4.875% senior notes due 2029 (the Existing 2029 Notes) and $800.0 million of 5.000% senior notes due 2034 (the 2034 Notes, and together, the Notes). We used the proceeds from the Notes for general corporate purposes, including the repayment of a portion of amounts outstanding under the Uncommitted Credit Facility, the Commercial Paper Program, the Credit Facility, and the Term Loan Facility. As a result of the Term Loan Facility repayment, we incurred a non-cash loss on the early extinguishment of debt related to the ratable portion of unamortized deferred issuance costs of $0.2 million. In December 2023, we issued an additional $350.0 million of 4.875% senior notes due 2029 (the New 2029 Notes, and together with the Existing 2029 Notes, the 2029 Notes). After giving effect to the issuance of the New 2029 Notes, $750.0 million in aggregate principal amount of the 2029 Notes is outstanding. The New 2029 Notes are fungible with the Existing 2029 Notes, and taken together, the 2029 Notes are treated as a single series. In December 2023, we also issued $650.0 million of 5.000% senior notes due 2033 (the 2033 Notes). The proceeds of the New 2029 Notes and the 2033 Notes were used for general corporate purposes, including the repayment of a portion of amounts outstanding under the Uncommitted Credit Facility, the Commercial Paper Program, the Credit Facility, and the Term Loan Facility. Our senior notes and debentures are general unsecured and unsubordinated obligations and rank equally with our other unsecured obligations. Interest Rate Swap and Lock Agreements Our ability to obtain financing through the capital markets is a key component of our financial strategy. Historically, we have managed risk associated with executing this strategy, particularly as it relates to fluctuations in interest rates, by using a combination of fixed and floating rate debt. From time to time, we also have entered into interest rate swap and lock agreements to manage risk associated with interest rates, either to effectively convert specific fixed rate debt to a floating rate (fair value hedges), or to lock interest rates in anticipation of future debt issuances (cash flow hedges). Cash Flow Hedges We have historically entered into multiple swap agreements designated as cash flow hedges to manage exposure to fluctuations in interest rates in anticipation of planned future issuances of senior notes. Upon the expected issuance of senior notes, we terminate the interest rate locks and settle with our counterparties. These transactions are accounted for as cash flow hedges. The fair value of our interest rate locks is determined using standard valuation models with assumptions about interest rates being based on those observed in underlying markets (Level 2 in the fair value hierarchy). During the three months ended March 31, 2023, we recognized an unrealized gain in other comprehensive loss of $1.7 million, net of tax, related to terminated interest rate locks issued in conjunction with the issuance of our 5.000% Notes in March 2023. As of March 31, 2024 and December 31, 2023, our previously terminated interest rate locks were recorded as components of accumulated other comprehensive loss of $15.0 million and $15.9 million, respectively, net of tax. The effective portion of the interest rate locks is amortized as an adjustment to interest expense over the life of the issued debt using the effective interest method. For the three months ended March 31, 2024 and 2023, we recognized losses, net of tax, of $0.9 million and $1.0 million, respectively. Over the next 12 months, we expect to amortize $2.0 million, net of tax, from accumulated other comprehensive loss to interest expense as a yield adjustment of our senior notes. In connection with our acquisition of US Ecology, in the second quarter of 2022, we acquired and novated a floating-to-fixed interest rate swap agreement (the 2022 Interest Rate Swap) with an initial effective date of March 6, 2020, an initial notional amount of $500 million relative to our Term Loan Facility and an initial fair value of $29.1 million. The initial fair value is reclassified into earnings as non-cash interest expense on a systematic basis over the life of the interest rate swap. As of March 31, 2024, the 2022 Interest Rate Swap has a notional value of $340 million. The interest rate swap matures in November 2026. The goal was to reduce overall borrowing costs. We pay interest at a fixed interest rate of 0.832% and receive interest at floating rates based on changes in SOFR. The interest rate swap is designated as a cash flow hedge. Changes in the fair value of the interest rate swap are recorded as a component of accumulated other comprehensive loss and are recognized in interest expense in the period in which the payment is settled. The fair value of our floating-to-fixed swap is determined using standard valuation models with assumptions about interest rates being based on those observed in underlying markets (Level 2 in the fair value hierarchy). As of March 31, 2024 and December 31, 2023, the 2022 Interest Rate Swap was recorded at its fair value of $25.6 million and $24.3 million, respectively, and is included in other assets in our consolidated balance sheets. For the three months ended March 31, 2024 and 2023, we recognized unrealized gains of $5.1 million and $3.5 million, respectively, in accumulated other comprehensive income for the 2022 Interest Rate Swap. As of March 31, 2024 and December 31, 2023, the 2022 Interest Rate Swap was recorded as a gain within accumulated other comprehensive loss of $6.4 million and $4.3 million, respectively, net of tax. The effective portion of the 2022 Interest Rate Swap is amortized as an adjustment to interest expense over the life of the instrument using the effective interest method. For the three months ended March 31, 2024 and 2023, we recognized gains, net of tax, of $3.0 million and $3.6 million, respectively, related to this amortization. Over the next 12 months, we expect to amortize approximately $5 million, net of tax, from accumulated other comprehensive loss as an offset to interest expense in the period in which payments are settled. For further detail regarding the effect of our cash flow hedging on interest expense, refer to Note 11, Financial Instruments , of the notes to our unaudited consolidated financial statements in Part I, Item 1 of this Quarterly Report on Form 10-Q. Derivative Contracts Contemporaneously with the issuance of our 2.300% Notes in February 2020, we amended interest rate lock agreements with an aggregate notional value of $550.0 million, extending the mandatory maturity date from 2020 to 2030, and dedesignated them as cash flow hedges (2020 Extended Interest Rate Locks). Contemporaneously with the issuance of our 2.500% Notes in August 2019, we amended interest rate lock agreements with an aggregate notional value of $375.0 million, extending the mandatory maturity date from 2019 to 2024, and dedesignated them as cash flow hedges (2019 Extended Interest Rate Locks and collectively with the 2020 Extended Interest Rate Locks, the Extended Interest Rate Locks). There was no ineffectiveness recognized in the termination of these cash flow hedges. In addition, we entered into offsetting interest rate swaps to offset future exposures to fair value fluctuations of the Extended Interest Rate Locks (2019 Offsetting Interest Rate Swap and the 2020 Offsetting Interest Rate Swap, or collectively the Offsetting Interest Rate Swaps). The fair value of these free-standing derivatives was determined using standard valuation models with assumptions about interest rates being based on those observed in underlying markets (Level 2 in the fair value hierarchy). As of March 31, 2024 and December 31, 2023, the fair value of the Extended Interest Rate Locks were assets of $67.4 million and $54.0 million, respectively, which were included in prepaid and other current assets and other assets in our consolidated balance sheets. As of March 31, 2024 and December 31, 2023, the fair value of the Offsetting Interest Rate Swaps were liabilities of $87.8 million and $78.2 million, respectively, which were included in other accrued liabilities and other long-term liabilities in our consolidated balance sheets. For the three months ended March 31, 2024, we recognized a gain of $13.6 million on the change in fair value of the Extended Interest Rate Locks with an offsetting loss of $13.6 million on the change in fair value of the Offsetting Interest Rate Swaps. For the three months ended March 31, 2023, we recognized a loss of $9.8 million on the change in fair value of the Extended Interest Rate Locks with an offsetting gain of $8.7 million on the change in fair value of the Offsetting Interest Rate Swaps. The changes in fair value were recorded directly in earnings as an adjustment to interest expense in our consolidated statements of income. Tax-Exempt Financings As of March 31, 2024 and December 31, 2023, we had $1,379.8 million and $1,280.6 million, respectively, of certain variable rate tax-exempt financings outstanding, with maturities ranging from 2024 to 2054 and from 2024 to 2053, respectively. In both March 2024 and September 2023, the California Municipal Finance Authority issued, for our benefit, $100 million of Solid Waste Disposal Revenue Bonds each. The proceeds from the issuances, after deferred issuance costs, were used to fund the acquisition, construction, improvement, installation, and/or equipping of certain solid waste disposal facilities located within California. The initial remarketing period for these tax-exempt financings is 10 years. Our remaining tax-exempt financings are remarketed either quarterly or semiannually by remarketing agents to effectively maintain a variable yield. The holders of the bonds can put them back to the remarketing agents at the end of each interest period. If the remarketing agents are unable to remarket our bonds, the remarketing agents can put the bonds to us. In the event of a failed remarketing, we currently have availability under our Credit Facility to fund these bonds until they are remarketed successfully. Accordingly, we classified these borrowings as long-term in our consolidated balance sheets as of March 31, 2024 and December 31, 2023. Finance Leases As of March 31, 2024 and December 31, 2023, we had finance lease liabilities of $259.0 million and $251.3 million, respectively, with maturities ranging from 2024 to 2063 for both periods.

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2024
Income Tax Disclosure [Abstract]
INCOME TAXES	INCOME TAXES Our effective tax rate, exclusive of non-controlling interests, for the three months ended March 31, 2024 and 2023 was 24.2% and 26.5%, respectively. Our effective tax rate for the three months ended March 31, 2024 reflected benefits from investments in renewable energy assets qualifying for tax credits under Section 48 of the Internal Revenue Code. For the three months ended March 31, 2024 and 2023, net cash paid for income taxes was $7.8 million and $7.7 million, respectively. We have deferred tax assets related to state net operating loss carryforwards. We provide a partial valuation allowance due to uncertainty surrounding the future utilization of these carryforwards in the taxing jurisdictions where the loss carryforwards exist. When determining the need for a valuation allowance, we consider all positive and negative evidence, including recent financial results, scheduled reversals of deferred tax liabilities, projected future taxable income and tax planning strategies. The realization of our deferred tax asset for state loss carryforwards ultimately depends upon the existence of sufficient taxable income in the appropriate state taxing jurisdictions in future periods. The weight given to the positive and negative evidence is commensurate with the extent such evidence can be objectively verified. We continue to regularly monitor both positive and negative evidence in determining the ongoing need for a valuation allowance. As of March 31, 2024, the valuation allowance associated with our state loss carryforwards was $43.6 million. We are subject to income tax in the United States, as well as income tax in multiple state and foreign jurisdictions. Our compliance with income tax rules and regulations is periodically audited by taxing authorities. These authorities may challenge the positions taken in our tax filings. Thus, to provide for certain potential tax exposures, we maintain liabilities for uncertain tax positions for our estimate of the final outcome of these examinations. Our federal statute of limitations is closed through 2019. In addition, we are currently under state examination or administrative review in various jurisdictions for tax years 2012 through 2021. We believe the recorded liabilities for uncertain tax positions are adequate. However, a significant assessment against us in excess of the liabilities recorded could have a material adverse effect on our consolidated financial position, results of operations and cash flows. As of March 31, 2024, we are unable to estimate the resolution of our gross unrecognized benefits over the next 12 months. We recognize interest and penalties as incurred within the provision for income taxes in the consolidated statement of income. As of March 31, 2024, we accrued a liability for penalties of $0.3 million and a liability for interest (including interest on penalties) of $14.2 million related to our uncertain tax positions.

Stock Repurchases, Dividends an

Stock Repurchases, Dividends and Earnings per Share	3 Months Ended
	Mar. 31, 2024
Equity [Abstract]
STOCK REPURCHASES, DIVIDENDS AND EARNINGS PER SHARE	STOCK REPURCHASES, DIVIDENDS AND EARNINGS PER SHARE Available Shares We currently have approximately 11.3 million shares of common stock reserved for future grants under the Republic Services, Inc. 2021 Stock Incentive Plan. Stock Repurchases In October 2023, our Board of Directors approved a $3.0 billion share repurchase authorization effective January 1, 2024 and extending through December 31, 2026. Share repurchases under the program may be made through open market purchases or privately negotiated transactions in accordance with applicable federal securities laws. While the Board of Directors has approved the program, the timing of any purchases, the prices and the number of shares of common stock to be purchased will be determined by our management, at its discretion, and will depend upon market conditions and other factors. On a quarterly basis, our Board of Directors reviews the intrinsic value of our stock and the parameters around which we repurchase our shares. The share repurchase program may be extended, suspended or discontinued at any time. During both the three months ended March 31, 2024 and 2023, there were no shares repurchased and as of both March 31, 2024 and 2023, no repurchased shares pending settlement. As of March 31, 2024, the remaining authorized purchase capacity under our October 2023 repurchase program was $3.0 billion. Dividends In February 2024, our Board of Directors approved a quarterly dividend of $0.535 per share. Cash dividends declared were $168.5 million for the three months ended March 31, 2024. As of March 31, 2024, we recorded a quarterly dividend payable of $168.5 million to shareholders of record at the close of business on April 2, 2024. Earnings per Share Basic earnings per share is computed by dividing net income attributable to Republic Services, Inc. by the weighted average number of common shares (including vested but unissued restricted stock units and performance stock units) outstanding during the period. Diluted earnings per share is based on the combined weighted average number of common shares and common share equivalents outstanding, which include, where appropriate, the unvested restricted stock units (RSUs) and the unvested performance stock units (PSUs) at the expected attainment levels. We use the treasury stock method in computing diluted earnings per share. Earnings per share for the three months ended March 31, 2024 and 2023 are calculated as follows (in thousands, except per share amounts): Three Months Ended March 31, 2024 2023 Basic earnings per share: Net income attributable to Republic Services, Inc. $ 453,794 $ 383,852 Weighted average common shares outstanding 315,294 316,712 Basic earnings per share $ 1.44 $ 1.21 Diluted earnings per share: Net income attributable to Republic Services, Inc. $ 453,794 $ 383,852 Weighted average common shares outstanding 315,294 316,712 Effect of dilutive securities: Unvested RSU awards 125 75 Unvested PSU awards 274 355 Weighted average common and common equivalent shares outstanding 315,693 317,142 Diluted earnings per share $ 1.44 $ 1.21

Changes in Accumulated Other Co

Changes in Accumulated Other Comprehensive Loss by Component	3 Months Ended
	Mar. 31, 2024
Equity [Abstract]
CHANGES IN ACCUMULATED OTHER COMPREHENSIVE LOSS BY COMPONENT	CHANGES IN ACCUMULATED OTHER COMPREHENSIVE LOSS BY COMPONENT A summary of changes in accumulated other comprehensive loss, net of tax, by component, for the three months ended March 31, 2024 follows: Cash Flow Hedges Defined Benefit Pension Items Foreign Currency Translation Total Balance as of December 31, 2023 $ (11.6) $ 8.9 $ (9.4) $ (12.1) Other comprehensive income before reclassifications 5.1 — 3.8 8.9 Amounts reclassified from accumulated other comprehensive loss (2.1) — — (2.1) Net current period other comprehensive income 3.0 — 3.8 6.8 Balance as of March 31, 2024 $ (8.6) $ 8.9 $ (5.6) $ (5.3) A summary of reclassifications out of accumulated other comprehensive loss for the three months ended March 31, 2024 and 2023 follows: Three Months Ended March 31, 2024 2023 Details about Accumulated Other Comprehensive Loss Components Amount Reclassified from Accumulated Other Comprehensive Loss Affected Line Item in the Statement where Net Income is Presented Gain (loss) on cash flow hedges: Terminated interest rate locks $ (1.2) $ (1.4) Interest expense 2022 interest rate swap 4.0 4.9 Interest expense Total before tax 2.8 3.5 Tax provision (0.7) (0.9) Total income reclassified into earnings, net of tax $ 2.1 $ 2.6

Financial Instruments

Financial Instruments	3 Months Ended
	Mar. 31, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]
FINANCIAL INSTRUMENTS	FINANCIAL INSTRUMENTS The effect of our hedging relationships and derivative instruments on the consolidated statements of income for the three months ended March 31, 2024 and 2023 follows (in millions): Classification and amount of gain (loss) recognized in income on hedging relationships and derivative instruments Three Months Ended March 31, 2024 2023 Interest Expense Interest Expense Total amount of expense line items presented in the consolidated statements of income in which the effects of hedging relationships and derivative instruments are recorded $ (139.3) $ (126.7) The effects of cash flow hedging relationships in Subtopic 815-20: (Loss) gain on cash flow hedging relationships: Amount of (loss) gain reclassified from accumulated other comprehensive loss into earnings, net of tax: Interest rate swap locks $ (0.9) $ (1.0) 2022 interest rate swap $ 3.0 $ 3.6 The effects of derivative instruments not in Subtopic 815-20: Gain (loss) on free-standing derivative instruments: Interest rate contract: Net gain (loss) on change in fair value of free-standing derivative instruments $ — $ (1.1) Fair Value Measurements In measuring fair values of assets and liabilities, we use valuation techniques that maximize the use of observable inputs (Level 1) and minimize the use of unobservable inputs (Level 3). We also use market data or assumptions that we believe market participants would use in pricing an asset or liability, including assumptions about risk when appropriate. The carrying value for certain of our financial instruments, including cash, accounts receivable, current investments, accounts payable and certain other accrued liabilities, approximates fair value because of their short-term nature. As of March 31, 2024 and December 31, 2023, our assets and liabilities that are measured at fair value on a recurring basis include the following: March 31, 2024 Fair Value Carrying Amount Total Quoted Significant Significant Assets: Money market mutual funds $ 44.1 $ 44.1 $ 44.1 $ — $ — Bonds - restricted cash and marketable securities and other assets 76.8 76.8 — 76.8 — Derivative and hedging assets - prepaid and other current assets and other assets 93.0 93.0 — 93.0 — Total assets $ 213.9 $ 213.9 $ 44.1 $ 169.8 $ — Liabilities: Derivative and hedging liabilities - other accrued liabilities and other long-term liabilities $ 93.2 $ 93.2 $ — $ 93.2 $ — Contingent consideration - other accrued liabilities and other long-term liabilities 63.7 63.7 — — 63.7 Total liabilities $ 156.9 $ 156.9 $ — $ 93.2 $ 63.7 December 31, 2023 Fair Value Carrying Amount Total Quoted Significant Significant Assets: Money market mutual funds $ 43.1 $ 43.1 $ 43.1 $ — $ — Bonds - restricted cash and marketable securities and other assets 76.3 76.3 — 76.3 — Derivative and hedging assets - prepaid and other current assets and other assets 78.3 78.3 — 78.3 — Total assets $ 197.7 $ 197.7 $ 43.1 $ 154.6 $ — Liabilities: Derivative and hedging liabilities - other accrued liabilities and other long-term liabilities $ 79.6 $ 79.6 $ — $ 79.6 $ — Contingent consideration - other accrued liabilities and other long-term liabilities 63.6 63.6 — — 63.6 Total liabilities $ 143.2 $ 143.2 $ — $ 79.6 $ 63.6 Total Debt The carrying value of our total debt was $12.8 billion as of both March 31, 2024 and December 31, 2023, and the fair value of our total debt was $12.3 billion and $12.5 billion, respectively. The estimated fair value of our fixed rate senior notes and debentures is based on quoted market prices. The fair value of our remaining notes payable, tax-exempt financings and borrowings under our credit facilities approximates the carrying value because the interest rates are variable. The fair value estimates were based on Level 2 inputs of the fair value hierarchy as of March 31, 2024 and December 31, 2023. See Note 7, Debt , for further information related to our debt. Contingent Consideration In 2015, we entered into a waste management contract with the County of Sonoma, California to operate the county's waste management facilities. As of March 31, 2024, the Sonoma contingent consideration represents the fair value of $59.0 million payable to the County of Sonoma based on the achievement of future annual tonnage targets through the expected remaining capacity of the landfill. The potential undiscounted amount of all future contingent payments that we could be required to make under the waste management contract is estimated to be between approximately $81 million and $114 million. During the three months ended March 31, 2024, the activity in the contingent consideration liability included accretion, which was offset by concession payments made in the ordinary course of business. There were no changes to the estimate of fair value.

Segment Reporting

Segment Reporting	3 Months Ended
	Mar. 31, 2024
Segment Reporting [Abstract]
SEGMENT REPORTING	SEGMENT REPORTING Our senior management evaluates, oversees and manages the financial performance of our operations through three field groups, referred to as Group 1, Group 2 and Group 3. Group 1 is our recycling and waste business operating primarily in geographic areas located in the western United States. Group 2 is our recycling and waste business operating primarily in geographic areas located in the southeastern and mid-western United States, the eastern seaboard of the United States, and Canada. Group 3 is our environmental solutions business operating primarily in geographic areas located across the United States and Canada. These groups are presented below as our reportable segments, which each provide integrated environmental services, including but not limited to collection, transfer, recycling, and disposal. Adjusted EBITDA is the single financial measure our chief operating decision maker (CODM) uses to evaluate operating segment profitability and determine resource allocations. Summarized financial information concerning our reportable segments for the three months ended March 31, 2024 and 2023 follows: Group 1 Group 2 Recycling & Waste Subtotal (1) Group 3 Corporate entities and other Total Three Months Ended March 31, 2024 Gross Revenue $ 2,018.0 $ 1,913.2 $ 3,931.2 $ 428.4 $ 79.6 $ 4,439.2 Intercompany Revenue (300.7) (248.4) (549.1) (11.4) (17.0) (577.5) Revenue allocations 29.1 27.2 56.3 6.3 (62.6) — Net Revenue $ 1,746.4 $ 1,692.0 $ 3,438.4 $ 423.3 $ — $ 3,861.7 Adjusted EBITDA $ 558.8 $ 519.0 $ 1,077.8 $ 86.7 $ — $ 1,164.5 Capital Expenditures $ 186.5 $ 120.7 $ 307.2 $ 34.7 $ 172.6 $ 514.5 Total Assets 13,632.1 10,929.6 $ 24,561.7 $ 4,374.8 $ 2,445.2 $ 31,381.7 Three Months Ended March 31, 2023 Gross Revenue $ 1,840.3 $ 1,818.3 $ 3,658.6 $ 421.2 $ 67.4 $ 4,147.2 Intercompany Revenue (287.1) (242.6) (529.7) (14.8) (21.6) (566.1) Revenue allocations 22.3 21.6 43.9 1.9 (45.8) — Net Revenue $ 1,575.5 $ 1,597.3 $ 3,172.8 $ 408.3 $ — $ 3,581.1 Adjusted EBITDA $ 489.4 $ 464.9 $ 954.3 $ 85.7 $ — $ 1,040.0 Capital Expenditures $ 112.5 $ 85.3 $ 197.8 $ 22.4 $ 158.4 $ 378.6 Total Assets $ 12,357.4 $ 10,630.9 $ 22,988.3 $ 3,992.2 $ 2,100.9 $ 29,081.4 (1) The Recycling & Waste Subtotal represents the combined results of our Group 1 and Group 2 reportable segments. Corporate functions include legal, tax, treasury, information technology, risk management, human resources, closed landfills, and other administrative functions. National Accounts revenue included in Corporate entities and other represents the portion of revenue generated from nationwide and regional contracts in markets outside our operating areas where the associated material handling is subcontracted to local operators. Revenue and overhead costs of Corporate entities and other are either specifically assigned or allocated on a rational and consistent basis among our reportable segments to calculate Adjusted EBITDA. As presented in the tables below, Adjusted EBITDA reflects certain adjustments for US Ecology, Inc., acquisition, integration and deal costs, (income) losses from unconsolidated equity method investments, losses on extinguishment of debt, and restructuring expenses. This presentation is consistent with how our CODM reviews results of operations to make resource allocation decisions. Intercompany revenue reflects transactions within and between segments that generally are made on a basis intended to reflect the market value of such services. Capital expenditures for Corporate entities and other primarily include vehicle inventory acquired but not yet assigned to operating locations and facilities. A reconciliation of the Company's single measure of segment profitability (segment Adjusted EBITDA) to Income before income tax provision in the Consolidated Statements of Net Income is as follows: Three Months Ended March 31, 2024 2023 Group 1 Adjusted EBITDA $ 558.8 $ 489.4 Group 2 Adjusted EBITDA 519.0 464.9 Group 3 Adjusted EBITDA 86.7 85.7 Total Adjusted EBITDA 1,164.5 1,040.0 Other income, net (12.6) (2.5) Interest income (1.5) (1.4) Interest expense 139.3 126.7 Depreciation, amortization and depletion 399.2 358.7 Accretion 26.6 24.1 Loss (income) from unconsolidated equity method investment 8.7 (1.0) Loss on extinguishment of debt and other related costs — 0.2 Restructuring charges 5.9 5.5 US Ecology, Inc. acquisition integration and deal costs — 7.6 Income before income taxes $ 598.9 $ 522.1

Revenue and Credit Losses

Revenue and Credit Losses	3 Months Ended
	Mar. 31, 2024
Revenue from Contract with Customer [Abstract]
REVENUE AND CREDIT LOSSES	REVENUE AND CREDIT LOSSES Our operations primarily consist of providing environmental services. The following table disaggregates our revenue by service line for the three months ended March 31, 2024 and 2023 (in millions of dollars and as a percentage of revenue): Three Months Ended March 31, 2024 2023 Collection: Residential $ 723.3 18.7 % $ 685.1 19.1 % Small-container 1,189.0 30.8 1,056.3 29.5 Large-container 732.8 19.0 701.9 19.6 Other 17.7 0.5 15.1 0.4 Total collection 2,662.8 69.0 2,458.4 68.6 Transfer 419.3 401.0 Less: intercompany (236.5) (227.3) Transfer, net 182.8 4.7 173.7 4.8 Landfill 704.8 688.7 Less: intercompany (300.4) (296.1) Landfill, net 404.4 10.4 392.6 11.0 Environmental solutions 439.2 430.3 Less: intercompany (15.9) (22.0) Environmental solutions, net 423.3 11.0 408.3 11.4 Other: Recycling processing and commodity sales 95.5 2.5 70.7 2.0 Other non-core 92.9 2.4 77.4 2.2 Total other 188.4 4.9 148.1 4.2 Total revenue $ 3,861.7 100.0 % $ 3,581.1 100.0 % Other non-core revenue consists primarily of revenue from National Accounts, which represents the portion of revenue generated from nationwide or regional contracts in markets outside our operating areas where the associated material handling is subcontracted to local operators. Consequently, substantially all of this revenue is offset with related subcontract costs, which are recorded in cost of operations. See Note 12, Segment Reporting , for additional information regarding revenue by reportable segment. Revenue Recognition Our service obligations of a long-term nature, e.g., certain collection service contracts, are satisfied over time, and we recognize revenue based on the value provided to the customer during the period. The amount billed to the customer is based on variable elements such as the number of residential homes or businesses for which collection services are provided, the volume of material collected, treated, transported and disposed, and the nature of the material accepted. We do not disclose the value of unsatisfied performance obligations for these contracts as our right to consideration corresponds directly to the value provided to the customer for services completed to date and all future variable consideration is allocated to wholly unsatisfied performance obligations. Additionally, certain elements of our long-term customer contracts are unknown upon entering into the contract, including the amount that will be billed in accordance with annual price escalation clauses, our fuel recovery fee program and commodity prices. The amount to be billed is often tied to changes in an underlying base index such as a consumer price index or a fuel or commodity index, and revenue can be recognized once the index is established for the period. Environmental solutions revenue is primarily generated from the fees we charge for the collection, treatment, consolidation, disposal and recycling of hazardous and non-hazardous waste, field and industrial services, equipment rental, emergency response and standby services and in-plant services, such as transportation and logistics, including at our transfer, storage and disposal facilities (TSDF). Activity for this service line varies across markets and reflects the regulatory environment, pricing and disposal alternatives available in any given market. Revenue recognized is variable in nature and primarily based on the volume and type of waste accepted or processed during the period. For certain field and industrial services contracts, we have a right to consideration from our customers in an amount that corresponds directly with the value to the customer of the Company's performance completed to date. Therefore, we have applied the practical expedient to recognize revenue in the amount to which we have the right to invoice. Deferred Revenue The factors that impact the timing and amount of revenue recognized for each service line may vary based on the nature of the service performed. Generally, we recognize revenue at the time we perform a service. In the event that we bill for services in advance of performance, we recognize deferred revenue for the amount billed and subsequently recognize revenue at the time the service is provided. Depending on the nature of the contract, we may also generate revenue through the collection of fuel recovery fees and environmental fees which are designed to recover our internal costs of providing services to our customers. Substantially all of the deferred revenue recognized as of December 31, 2023 was recognized as revenue during the three months ended March 31, 2024 when the service was performed. Deferred Contract Costs We incur certain upfront payments to acquire customer contracts which are recognized as other assets in our consolidated balance sheet, and we amortize the asset over the respective contract life. In addition, we recognize sales commissions that represent an incremental cost of the contract as other assets in our consolidated balance sheets, and we amortize the asset over the average life of the customer relationship. As of March 31, 2024 and December 31, 2023, we recognized $82.1 million and $82.5 million, respectively, of deferred contract costs and capitalized sales commissions. During the three months ended March 31, 2024, we amortized $3.8 million of capitalized sales commissions to selling, general and administrative expenses and we amortized $1.1 million of other deferred contract costs as a reduction of revenue. During the three months ended March 31, 2023, we amortized $3.6 million of capitalized sales commissions to selling, general and administrative expenses and we amortized $1.3 million of other deferred contract costs as a reduction of revenue. Credit Losses Accounts receivable represent receivables from customers for environmental services, including collection and processing of recyclable materials, collection, transfer, and disposal of solid waste, and other environmental solutions. Our receivables are recorded when billed or when the related revenue is earned and represent claims against third parties that will be settled in cash. The carrying value of our receivables, net of the allowance for doubtful accounts and customer credits, represents their estimated net realizable value. We establish an allowance for doubtful accounts based on various factors including the age of receivables outstanding, historical trends, economic conditions and other information. We also review outstanding balances on an account-specific basis based on the credit risk of the customer. We determined that all of our accounts receivable share similar risk characteristics. We monitor our credit exposure on an ongoing basis and assess whether assets in the pool continue to display similar risk characteristics. We perform ongoing credit evaluations of our customers, but generally do not require collateral to support customer receivables. The following table reflects the activity in our allowance for doubtful accounts for the three months ended March 31, 2024 and 2023: 2024 2023 Balance at beginning of year $ 83.2 $ 51.9 Additions charged to expense 7.3 7.8 Accounts written-off (7.9) (0.9) Balance at end of period $ 82.6 $ 58.8

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2024
Commitments and Contingencies Disclosure [Abstract]
COMMITMENTS AND CONTINGENCIES	COMMITMENTS AND CONTINGENCIES Legal Proceedings We are subject to extensive and evolving laws and regulations and have implemented safeguards to respond to regulatory requirements. In the normal course of our business, we become involved in legal proceedings. Some may result in fines, penalties or judgments against us, or settlements, which may impact earnings and cash flows for a particular period. Although we cannot predict the ultimate outcome of any legal matter with certainty, we do not believe the outcome of any of our pending legal proceedings will have a material adverse impact on our consolidated financial position, results of operations or cash flows. As used herein, the term legal proceedings refers to litigation and similar claims against us and our subsidiaries, excluding: (1) ordinary course accidents, general commercial liability and workers' compensation claims, which are covered by insurance programs, subject to customary deductibles, and which, together with insured employee health care costs, are discussed in Note 5, Other Liabilities; and (2) environmental remediation liabilities, which are discussed in Note 6, Landfill and Environmental Costs. We accrue for legal proceedings when losses become probable and reasonably estimable. We have recorded an aggregate accrual of approximately $18 million relating to our outstanding legal proceedings as of March 31, 2024. As of the end of each applicable reporting period, we review each of our legal proceedings and, where it is probable that a liability has been incurred, we accrue for all probable and reasonably estimable losses. Where we can reasonably estimate a range of losses we may incur regarding such a matter, we record an accrual for the amount within the range that constitutes our best estimate. If we can reasonably estimate a range but no amount within the range appears to be a better estimate than any other, we use the amount that is the low end of such range. If we had used the high ends of such ranges, our aggregate potential liability would be approximately $13 million higher than the amount recorded as of March 31, 2024. Multiemployer Pension Plans We participate in multiemployer pension plans that generally provide retirement benefits to participants of contributing employers. We do not administer these plans. Under current law regarding multiemployer pension plans, our withdrawal (which we consider from time to time) or the mass withdrawal from any under-funded multiemployer pension plan (each, a Withdrawal Event) could require us to make payments to the plan for our proportionate share of the plan’s unfunded vested liabilities. During the course of operating our business, we incur Withdrawal Events regarding certain of the multiemployer pension plans in which we participate. We accrue for such events when losses become probable and reasonably estimable. Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Restricted cash and restricted cash equivalents are included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. Beginning-of-period and end-of-period cash, cash equivalents, restricted cash and restricted cash equivalents as presented in the statement of cash flows is reconciled as follows: March 31, 2024 December 31, 2023 March 31, 2023 December 31, 2022 Cash and cash equivalents $ 91.6 $ 140.0 $ 132.2 $ 143.4 Restricted cash and marketable securities 143.3 163.6 132.7 127.6 Less: restricted marketable securities (76.5) (76.1) (58.2) (56.7) Cash, cash equivalents, restricted cash and restricted cash equivalents $ 158.4 $ 227.5 $ 206.7 $ 214.3 Our restricted cash and marketable securities includes amounts pledged to regulatory agencies and governmental entities as financial guarantees of our performance under certain collection, landfill and transfer station contracts and permits, and relating to our final capping, closure and post-closure obligations at our landfills as well as restricted cash and marketable securities related to our insurance obligations. The following table summarizes our restricted cash and marketable securities: March 31, 2024 December 31, 2023 Capping, closure and post-closure obligations $ 43.7 $ 43.2 Insurance 99.6 120.4 Total restricted cash and marketable securities $ 143.3 $ 163.6 Off-Balance Sheet Arrangements We have no off-balance sheet debt or similar obligations, other than short-term operating leases and financial assurances, which are not classified as debt. We have no transactions or obligations with related parties that are not disclosed, consolidated into or reflected in our reported financial position or results of operations. We have not guaranteed any third-party debt.

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Pay vs Performance Disclosure
Net Income (Loss) Attributable to Parent	$ 453,794	$ 383,852

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
	Mar. 31, 2024
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

Basis of Presentation (Policies

Basis of Presentation (Policies)	3 Months Ended
	Mar. 31, 2024
Accounting Policies [Abstract]
Management's Estimates and Assumptions	Management’s Estimates and Assumptions In preparing our financial statements, we make numerous estimates and assumptions that affect the amounts reported in these financial statements and accompanying notes. We must make these estimates and assumptions because certain information we use is dependent on future events, cannot be calculated with a high degree of precision from data available or simply cannot be readily calculated based on generally accepted methodologies. In preparing our financial statements, the more critical and subjective areas that deal with the greatest amount of uncertainty relate to our accounting for our long-lived assets, including recoverability, landfill development costs and final capping, closure and post-closure costs; our valuation allowances for accounts receivable and deferred tax assets; our liabilities for potential litigation, claims and assessments; our liabilities for environmental remediation, multiemployer pension plans, employee benefit plans, deferred taxes, uncertain tax positions and insurance reserves; and our estimates of the fair values of assets acquired and liabilities assumed in any acquisition. Each of these items is discussed in more detail in our description of our significant accounting policies in Note 2, Summary of Significant Accounting Policies , of the Notes to Consolidated Financial Statements in our Annual Report on Form 10-K for the fiscal year ended December 31, 2023. Our actual results may differ significantly from our estimates.
New Accounting Pronouncements	New Accounting Pronouncements Accounting Standards Updates Issued but not yet Adopted Climate-Related Disclosures In March 2024, the SEC adopted Final Rule 33-11275 and 34-99678 - The Enhancement and Standardization of Climate-Related Disclosures for Investors . The rules require registrants to provide standardized disclosures related to material climate-related risks, governance and risk management strategies, and the financial impact of severe weather events and material Scope 1 and 2 greenhouse gas emissions. The rules require implementation in phases between 2025 and 2033. In April 2024, the SEC announced that it would voluntarily stay its final climate disclosure rules pending judicial review. The Company is currently evaluating the impact of the rules on its future consolidated financial statements. Codification Amendments in Response to the SEC's Disclosure Update and Simplification Initiative In October 2023, the FASB issued ASU 2023-06 to modify the disclosure or presentation requirements of a variety of topics, which will allow users to more easily compare entities subject to the SEC's existing disclosures with those entities that were not previously subject to the SEC's requirements, and to align the requirements in the FASB accounting standard codification with the SEC's regulations. The Company is currently evaluating the provisions of the amendments and the impact on its future consolidated financial statements. Improvements to Reportable Segment Disclosures In November 2023, the FASB issued ASU 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures (ASU 2023-07) . ASU 2023-07 improves the reportable segment disclosure requirements, primarily through enhanced disclosures about significant segment expenses. The amendments in this update are effective for fiscal years beginning after December 15, 2023 and interim periods beginning after December 14, 2024. We are currently assessing the effect this guidance may have on our consolidated financial statements. Improvements to Income Tax Disclosures In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures (ASU 2023-09). ASU 2023-09 requires entities to provide additional information in the rate reconciliation and additional disclosures about income taxes paid. The amendments in this update are effective for fiscal years beginning after December 15, 2024. We are currently assessing the effect this guidance may have on our consolidated financial statements.

Business Acquisitions, Invest_2

Business Acquisitions, Investments and Restructuring Charges (Tables)	3 Months Ended
	Mar. 31, 2024
Business Combination and Asset Acquisition [Abstract]
Purchase price paid for business acquisition and allocation of purchase price	The aggregate purchase price paid for these business acquisitions and the allocations of the aggregate purchase price follows: 2024 2023 Purchase price: Cash used in acquisitions, net of cash acquired of $0.8 and $9.5, respectively $ 41.0 $ 221.9 Holdbacks — 2.2 Total $ 41.0 $ 224.1 Allocated as follows: Accounts receivable $ 1.8 $ 14.2 Prepaid expenses — 0.8 Property and equipment 20.6 31.6 Inventory 0.1 0.9 Accounts payable (0.4) (5.3) Deferred revenue (0.2) — Deferred income tax liabilities (1.3) (9.2) Other liabilities (0.2) (3.7) Fair value of tangible assets acquired and liabilities assumed 20.4 29.3 Excess purchase price to be allocated $ 20.6 $ 194.8 Excess purchase price allocated as follows: Other intangible assets $ 4.2 $ 23.4 Goodwill 16.4 171.4 Total allocated $ 20.6 $ 194.8

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets, Net (Tables)	3 Months Ended
	Mar. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Summary of the activity and balances in goodwill accounts by reporting segment	A summary of the activity and balances in goodwill accounts by reporting segment follows: Balance as of December 31, 2023 Acquisitions Divestitures Adjustments to Acquisitions and Other Balance as of March 31, 2024 Group 1 $ 7,312.4 $ 1.2 $ — $ 1.0 $ 7,314.6 Group 2 6,445.5 0.3 — 0.3 6,446.1 Group 3 2,076.6 14.9 — 0.1 2,091.6 Total $ 15,834.5 $ 16.4 $ — $ 1.4 $ 15,852.3
Summary of the activity and balances by intangible asset type	A summary of the activity and balances by intangible asset type follows: Gross Intangible Assets Accumulated Amortization Balance as of December 31, 2023 Acquisitions Adjustments and Other Balance as of March 31, 2024 Balance as of December 31, 2023 Additions Charged to Expense Adjustments and Other Balance as of March 31, 2024 Other Intangible Assets, Net as of March 31, 2024 Customer relationships $ 631.7 $ 3.3 $ — $ 635.0 $ (165.7) $ (15.3) $ — $ (181.0) $ 454.0 Non-compete agreements 30.4 0.9 — 31.3 (15.7) (1.5) — (17.2) 14.1 Other intangible assets 23.2 — — 23.2 (7.7) (1.0) — (8.7) 14.5 Total $ 685.3 $ 4.2 $ — $ 689.5 $ (189.1) $ (17.8) $ — $ (206.9) $ 482.6

Other Assets (Tables)

Other Assets (Tables)	3 Months Ended
	Mar. 31, 2024
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Summary of prepaid expenses and other current assets	A summary of prepaid expenses and other current assets as of March 31, 2024 and December 31, 2023 follows: 2024 2023 Prepaid expenses $ 124.3 $ 123.0 Inventories 101.4 97.3 Other non-trade receivables 73.5 63.2 Income taxes receivable 47.4 126.3 Reinsurance receivable 35.4 35.4 Prepaid fees for cloud-based hosting arrangements, current 24.6 17.0 Derivative and hedging assets 5.1 4.2 Other current assets 7.3 6.2 Total $ 419.0 $ 472.6
Summary of other assets	A summary of other assets as of March 31, 2024 and December 31, 2023 follows: 2024 2023 Investments $ 584.2 $ 469.4 Operating right-of-use lease assets 228.9 238.1 Deferred compensation plan 119.6 112.7 Reinsurance receivable 91.8 92.1 Derivative and hedging assets 87.9 74.1 Deferred contract costs and sales commissions 82.1 82.5 Prepaid fees and capitalized implementation costs for cloud-based hosting arrangements 79.9 67.6 Amounts recoverable for capping, closure and post-closure obligations 22.5 21.9 Deferred financing costs 3.3 3.6 Other 19.2 21.9 Total $ 1,319.4 $ 1,183.9

Other Liabilities (Tables)

Other Liabilities (Tables)	3 Months Ended
	Mar. 31, 2024
Other Liabilities Disclosure [Abstract]
Summary of other accrued liabilities	A summary of other accrued liabilities as of March 31, 2024 and December 31, 2023 follows: 2024 2023 Accrued payroll and benefits $ 225.5 $ 350.5 Insurance reserves, current 215.0 216.6 Accrued dividends 168.5 168.3 Accrued fees and taxes 167.8 182.9 Operating right-of-use lease liabilities, current 53.0 54.8 Ceded insurance reserves, current 35.4 35.4 Accrued professional fees and legal settlement reserves 19.5 17.9 Derivative and hedging liabilities 7.2 8.3 Other 103.3 136.8 Total $ 995.2 $ 1,171.5
Summary of other long-term liabilities	A summary of other long-term liabilities as of March 31, 2024 and December 31, 2023 follows: 2024 2023 Operating right-of-use lease liabilities $ 185.8 $ 194.9 Deferred compensation plan liability 122.1 114.7 Ceded insurance reserves 91.8 92.1 Derivative and hedging liabilities 86.0 71.3 Contingent purchase price and acquisition holdbacks 59.3 59.1 Withdrawal liability - multiemployer pension funds 19.5 19.6 Other 38.1 42.9 Total $ 602.6 $ 594.6

Landfill and Environmental Co_2

Landfill and Environmental Costs (Tables)	3 Months Ended
	Mar. 31, 2024
Environmental Remediation Obligations [Abstract]
Schedule of accrued landfill and environmental costs	A summary of accrued landfill and environmental liabilities as of March 31, 2024 and December 31, 2023 follows: 2024 2023 Landfill final capping, closure and post-closure liabilities $ 1,967.9 $ 1,937.2 Environmental remediation 479.8 485.4 Total accrued landfill and environmental costs 2,447.7 2,422.6 Less: current portion (141.2) (141.6) Long-term portion $ 2,306.5 $ 2,281.0
Schedule of final capping, closure and post-closure costs	The following table summarizes the activity in our asset retirement obligation liabilities, which includes liabilities for final capping, closure and post-closure, for the three months ended March 31, 2024 and 2023: 2024 2023 Asset retirement obligation liabilities, beginning of year $ 1,937.2 $ 1,786.4 Non-cash additions 14.3 15.0 Asset retirement obligation adjustments (1.3) (8.4) Payments (8.9) (8.8) Accretion expense 26.6 24.1 Asset retirement obligation liabilities, end of period 1,967.9 1,808.3 Less: current portion (72.4) (73.9) Long-term portion $ 1,895.5 $ 1,734.4
Summary of activity in environmental remediation liabilities	The following table summarizes the activity in our environmental remediation liabilities for the three months ended March 31, 2024 and 2023: 2024 2023 Environmental remediation liabilities, beginning of year $ 485.4 $ 487.5 Payments (9.8) (11.6) Accretion expense (non-cash interest expense) 4.2 4.6 Environmental remediation liabilities, end of period 479.8 480.5 Less: current portion (68.8) (61.3) Long-term portion $ 411.0 $ 419.2

Debt (Tables)

Debt (Tables)	3 Months Ended
	Mar. 31, 2024
Debt Disclosure [Abstract]
Carrying value of notes payable, capital leases and long-term debt	The carrying value of our credit facilities, finance leases and long-term debt as of March 31, 2024 and December 31, 2023 is listed in the following table, and is adjusted for the fair value of interest rate swaps, unamortized discounts, deferred issuance costs and the unamortized portion of adjustments to fair value recorded in purchase accounting. Original issue discounts, deferred issuance costs, and adjustments to fair value recorded in purchase accounting are amortized to interest expense over the term of the applicable instrument using the effective interest method. March 31, 2024 December 31, 2023 Maturity Interest Rate Principal Adjustments Carrying Value Principal Adjustments Carrying Value Credit facilities: Uncommitted Credit Facility Variable $ 24.2 $ — $ 24.2 $ — $ — $ — $3.5 billion - August 2026 Variable 162.9 — 162.9 297.1 — 297.1 Term Loan Variable 500.0 — 500.0 500.0 — 500.0 Commercial Paper Variable 509.0 (0.7) 508.3 496.0 (0.7) 495.3 Senior notes: August 2024 2.500 900.0 (0.7) 899.3 900.0 (1.2) 898.8 March 2025 3.200 500.0 (0.7) 499.3 500.0 (0.9) 499.1 November 2025 0.875 350.0 (1.1) 348.9 350.0 (1.2) 348.8 July 2026 2.900 500.0 (1.5) 498.5 500.0 (1.6) 498.4 November 2027 3.375 650.0 (2.3) 647.7 650.0 (2.5) 647.5 May 2028 3.950 800.0 (8.4) 791.6 800.0 (8.9) 791.1 April 2029 4.875 750.0 (6.9) 743.1 750.0 (6.9) 743.1 March 2030 2.300 600.0 (4.4) 595.6 600.0 (4.5) 595.5 February 2031 1.450 650.0 (6.0) 644.0 650.0 (6.2) 643.8 February 2032 1.750 750.0 (5.2) 744.8 750.0 (5.4) 744.6 March 2033 2.375 700.0 (6.3) 693.7 700.0 (6.5) 693.5 December 2033 5.000 650.0 (9.3) 640.7 650.0 (8.9) 641.1 April 2034 5.000 800.0 (10.5) 789.5 800.0 (10.7) 789.3 March 2035 6.086 181.9 (11.3) 170.6 181.9 (11.5) 170.4 March 2040 6.200 399.9 (3.2) 396.7 399.9 (3.3) 396.6 May 2041 5.700 385.7 (4.7) 381.0 385.7 (4.7) 381.0 March 2050 3.050 400.0 (6.8) 393.2 400.0 (6.8) 393.2 Debentures: September 2035 7.400 148.1 (28.5) 119.6 148.1 (28.8) 119.3 Tax-exempt: 2024 - 2054 3.700 - 4.900 1,389.1 (9.3) 1,379.8 1,289.1 (8.5) 1,280.6 Finance leases: 2024 - 2063 0.806 - 9.750 259.0 — 259.0 251.3 — 251.3 Total Debt $ 12,959.8 $ (127.8) 12,832.0 $ 12,949.1 $ (129.7) 12,819.4 Less: current portion (1,431.9) (932.3) Long-term portion $ 11,400.1 $ 11,887.1

Stock Repurchases, Dividends _2

Stock Repurchases, Dividends and Earnings per Share (Tables)	3 Months Ended
	Mar. 31, 2024
Equity [Abstract]
Earnings per share	Earnings per share for the three months ended March 31, 2024 and 2023 are calculated as follows (in thousands, except per share amounts): Three Months Ended March 31, 2024 2023 Basic earnings per share: Net income attributable to Republic Services, Inc. $ 453,794 $ 383,852 Weighted average common shares outstanding 315,294 316,712 Basic earnings per share $ 1.44 $ 1.21 Diluted earnings per share: Net income attributable to Republic Services, Inc. $ 453,794 $ 383,852 Weighted average common shares outstanding 315,294 316,712 Effect of dilutive securities: Unvested RSU awards 125 75 Unvested PSU awards 274 355 Weighted average common and common equivalent shares outstanding 315,693 317,142 Diluted earnings per share $ 1.44 $ 1.21

Changes in Accumulated Other _2

Changes in Accumulated Other Comprehensive Loss by Component (Tables)	3 Months Ended
	Mar. 31, 2024
Equity [Abstract]
Summary of changes in accumulated other comprehensive income by component	A summary of changes in accumulated other comprehensive loss, net of tax, by component, for the three months ended March 31, 2024 follows: Cash Flow Hedges Defined Benefit Pension Items Foreign Currency Translation Total Balance as of December 31, 2023 $ (11.6) $ 8.9 $ (9.4) $ (12.1) Other comprehensive income before reclassifications 5.1 — 3.8 8.9 Amounts reclassified from accumulated other comprehensive loss (2.1) — — (2.1) Net current period other comprehensive income 3.0 — 3.8 6.8 Balance as of March 31, 2024 $ (8.6) $ 8.9 $ (5.6) $ (5.3)
Schedule of reclassifications out of accumulated other comprehensive income	A summary of reclassifications out of accumulated other comprehensive loss for the three months ended March 31, 2024 and 2023 follows: Three Months Ended March 31, 2024 2023 Details about Accumulated Other Comprehensive Loss Components Amount Reclassified from Accumulated Other Comprehensive Loss Affected Line Item in the Statement where Net Income is Presented Gain (loss) on cash flow hedges: Terminated interest rate locks $ (1.2) $ (1.4) Interest expense 2022 interest rate swap 4.0 4.9 Interest expense Total before tax 2.8 3.5 Tax provision (0.7) (0.9) Total income reclassified into earnings, net of tax $ 2.1 $ 2.6

Financial Instruments (Tables)

Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of fair value hedging instruments	The effect of our hedging relationships and derivative instruments on the consolidated statements of income for the three months ended March 31, 2024 and 2023 follows (in millions): Classification and amount of gain (loss) recognized in income on hedging relationships and derivative instruments Three Months Ended March 31, 2024 2023 Interest Expense Interest Expense Total amount of expense line items presented in the consolidated statements of income in which the effects of hedging relationships and derivative instruments are recorded $ (139.3) $ (126.7) The effects of cash flow hedging relationships in Subtopic 815-20: (Loss) gain on cash flow hedging relationships: Amount of (loss) gain reclassified from accumulated other comprehensive loss into earnings, net of tax: Interest rate swap locks $ (0.9) $ (1.0) 2022 interest rate swap $ 3.0 $ 3.6 The effects of derivative instruments not in Subtopic 815-20: Gain (loss) on free-standing derivative instruments: Interest rate contract: Net gain (loss) on change in fair value of free-standing derivative instruments $ — $ (1.1)
Assets and liabilities measured at fair value on a recurring basis	As of March 31, 2024 and December 31, 2023, our assets and liabilities that are measured at fair value on a recurring basis include the following: March 31, 2024 Fair Value Carrying Amount Total Quoted Significant Significant Assets: Money market mutual funds $ 44.1 $ 44.1 $ 44.1 $ — $ — Bonds - restricted cash and marketable securities and other assets 76.8 76.8 — 76.8 — Derivative and hedging assets - prepaid and other current assets and other assets 93.0 93.0 — 93.0 — Total assets $ 213.9 $ 213.9 $ 44.1 $ 169.8 $ — Liabilities: Derivative and hedging liabilities - other accrued liabilities and other long-term liabilities $ 93.2 $ 93.2 $ — $ 93.2 $ — Contingent consideration - other accrued liabilities and other long-term liabilities 63.7 63.7 — — 63.7 Total liabilities $ 156.9 $ 156.9 $ — $ 93.2 $ 63.7 December 31, 2023 Fair Value Carrying Amount Total Quoted Significant Significant Assets: Money market mutual funds $ 43.1 $ 43.1 $ 43.1 $ — $ — Bonds - restricted cash and marketable securities and other assets 76.3 76.3 — 76.3 — Derivative and hedging assets - prepaid and other current assets and other assets 78.3 78.3 — 78.3 — Total assets $ 197.7 $ 197.7 $ 43.1 $ 154.6 $ — Liabilities: Derivative and hedging liabilities - other accrued liabilities and other long-term liabilities $ 79.6 $ 79.6 $ — $ 79.6 $ — Contingent consideration - other accrued liabilities and other long-term liabilities 63.6 63.6 — — 63.6 Total liabilities $ 143.2 $ 143.2 $ — $ 79.6 $ 63.6

Segment Reporting (Tables)

Segment Reporting (Tables)	3 Months Ended
	Mar. 31, 2024
Segment Reporting [Abstract]
Summarized financial information concerning reportable segments	Summarized financial information concerning our reportable segments for the three months ended March 31, 2024 and 2023 follows: Group 1 Group 2 Recycling & Waste Subtotal (1) Group 3 Corporate entities and other Total Three Months Ended March 31, 2024 Gross Revenue $ 2,018.0 $ 1,913.2 $ 3,931.2 $ 428.4 $ 79.6 $ 4,439.2 Intercompany Revenue (300.7) (248.4) (549.1) (11.4) (17.0) (577.5) Revenue allocations 29.1 27.2 56.3 6.3 (62.6) — Net Revenue $ 1,746.4 $ 1,692.0 $ 3,438.4 $ 423.3 $ — $ 3,861.7 Adjusted EBITDA $ 558.8 $ 519.0 $ 1,077.8 $ 86.7 $ — $ 1,164.5 Capital Expenditures $ 186.5 $ 120.7 $ 307.2 $ 34.7 $ 172.6 $ 514.5 Total Assets 13,632.1 10,929.6 $ 24,561.7 $ 4,374.8 $ 2,445.2 $ 31,381.7 Three Months Ended March 31, 2023 Gross Revenue $ 1,840.3 $ 1,818.3 $ 3,658.6 $ 421.2 $ 67.4 $ 4,147.2 Intercompany Revenue (287.1) (242.6) (529.7) (14.8) (21.6) (566.1) Revenue allocations 22.3 21.6 43.9 1.9 (45.8) — Net Revenue $ 1,575.5 $ 1,597.3 $ 3,172.8 $ 408.3 $ — $ 3,581.1 Adjusted EBITDA $ 489.4 $ 464.9 $ 954.3 $ 85.7 $ — $ 1,040.0 Capital Expenditures $ 112.5 $ 85.3 $ 197.8 $ 22.4 $ 158.4 $ 378.6 Total Assets $ 12,357.4 $ 10,630.9 $ 22,988.3 $ 3,992.2 $ 2,100.9 $ 29,081.4 (1) The Recycling & Waste Subtotal represents the combined results of our Group 1 and Group 2 reportable segments.
Schedule of adjusted EBITDA and EBITDA margin	A reconciliation of the Company's single measure of segment profitability (segment Adjusted EBITDA) to Income before income tax provision in the Consolidated Statements of Net Income is as follows: Three Months Ended March 31, 2024 2023 Group 1 Adjusted EBITDA $ 558.8 $ 489.4 Group 2 Adjusted EBITDA 519.0 464.9 Group 3 Adjusted EBITDA 86.7 85.7 Total Adjusted EBITDA 1,164.5 1,040.0 Other income, net (12.6) (2.5) Interest income (1.5) (1.4) Interest expense 139.3 126.7 Depreciation, amortization and depletion 399.2 358.7 Accretion 26.6 24.1 Loss (income) from unconsolidated equity method investment 8.7 (1.0) Loss on extinguishment of debt and other related costs — 0.2 Restructuring charges 5.9 5.5 US Ecology, Inc. acquisition integration and deal costs — 7.6 Income before income taxes $ 598.9 $ 522.1

Revenue and Credit Losses (Tabl

Revenue and Credit Losses (Tables)	3 Months Ended
	Mar. 31, 2024
Revenue from Contract with Customer [Abstract]
Disaggregation of revenue	The following table disaggregates our revenue by service line for the three months ended March 31, 2024 and 2023 (in millions of dollars and as a percentage of revenue): Three Months Ended March 31, 2024 2023 Collection: Residential $ 723.3 18.7 % $ 685.1 19.1 % Small-container 1,189.0 30.8 1,056.3 29.5 Large-container 732.8 19.0 701.9 19.6 Other 17.7 0.5 15.1 0.4 Total collection 2,662.8 69.0 2,458.4 68.6 Transfer 419.3 401.0 Less: intercompany (236.5) (227.3) Transfer, net 182.8 4.7 173.7 4.8 Landfill 704.8 688.7 Less: intercompany (300.4) (296.1) Landfill, net 404.4 10.4 392.6 11.0 Environmental solutions 439.2 430.3 Less: intercompany (15.9) (22.0) Environmental solutions, net 423.3 11.0 408.3 11.4 Other: Recycling processing and commodity sales 95.5 2.5 70.7 2.0 Other non-core 92.9 2.4 77.4 2.2 Total other 188.4 4.9 148.1 4.2 Total revenue $ 3,861.7 100.0 % $ 3,581.1 100.0 %
Schedule of activity in allowance for doubtful accounts	The following table reflects the activity in our allowance for doubtful accounts for the three months ended March 31, 2024 and 2023: 2024 2023 Balance at beginning of year $ 83.2 $ 51.9 Additions charged to expense 7.3 7.8 Accounts written-off (7.9) (0.9) Balance at end of period $ 82.6 $ 58.8

Commitments and Contingencies (

Commitments and Contingencies (Tables)	3 Months Ended
	Mar. 31, 2024
Commitments and Contingencies Disclosure [Abstract]
Schedule of cash equivalents, restricted cash and marketable securities	Beginning-of-period and end-of-period cash, cash equivalents, restricted cash and restricted cash equivalents as presented in the statement of cash flows is reconciled as follows: March 31, 2024 December 31, 2023 March 31, 2023 December 31, 2022 Cash and cash equivalents $ 91.6 $ 140.0 $ 132.2 $ 143.4 Restricted cash and marketable securities 143.3 163.6 132.7 127.6 Less: restricted marketable securities (76.5) (76.1) (58.2) (56.7) Cash, cash equivalents, restricted cash and restricted cash equivalents $ 158.4 $ 227.5 $ 206.7 $ 214.3
Summary of restricted cash and marketable securities	The following table summarizes our restricted cash and marketable securities: March 31, 2024 December 31, 2023 Capping, closure and post-closure obligations $ 43.7 $ 43.2 Insurance 99.6 120.4 Total restricted cash and marketable securities $ 143.3 $ 163.6

Basis of Presentation (Details)

Basis of Presentation (Details)	3 Months Ended
	Mar. 31, 2024 segment
Accounting Policies [Abstract]
Number of operating segments	3

Business Acquisitions, Invest_3

Business Acquisitions, Investments and Restructuring Charges - Acquisitions (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Purchase price:
Cash used in acquisitions, net of cash acquired of $0.8 and $9.5, respectively	$ 166.3	$ 290.9
Excess purchase price allocated as follows:
Goodwill	15,852.3		$ 15,834.5
Series of Individually Immaterial Business Acquisitions
Purchase price:
Cash acquired	0.8	9.5
Cash used in acquisitions, net of cash acquired of $0.8 and $9.5, respectively	41	221.9
Holdbacks	0	2.2
Total	41	224.1
Allocated as follows:
Accounts receivable	1.8	14.2
Prepaid expenses	0	0.8
Property and equipment	20.6	31.6
Inventory	0.1	0.9
Accounts payable	(0.4)	(5.3)
Deferred revenue	(0.2)	0
Deferred income tax liabilities	(1.3)	(9.2)
Other liabilities	(0.2)	(3.7)
Fair value of tangible assets acquired and liabilities assumed	20.4	29.3
Excess purchase price to be allocated	20.6	194.8
Excess purchase price allocated as follows:
Other intangible assets	4.2	23.4
Goodwill	16.4	171.4
Total allocated	$ 20.6	$ 194.8

Business Acquisitions, Invest_4

Business Acquisitions, Investments and Restructuring Charges - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Business Acquisition [Line Items]
(Loss) income from unconsolidated equity method investments	$ (8.7)	$ 1
Restructuring charges	5.9	5.5
Restructuring expenditures	5.7	5
Investment Tax Credit Carryforward
Business Acquisition [Line Items]
Increase (decrease) in income taxes	(8)	0
Other Noncurrent Assets
Business Acquisition [Line Items]
Capital contributions to noncontrolling equity interest	87.3	1.5
Joint Venture with Landfill Gas to Energy Developer
Business Acquisition [Line Items]
Equity method investments	29
Certain Limited Liability Companies
Business Acquisition [Line Items]
(Loss) income from unconsolidated equity method investments	$ (9.2)	$ 1.3

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets, Net - Goodwill (Details) $ in Millions	3 Months Ended
	Mar. 31, 2024 USD ($)
Goodwill [Roll forward]
Beginning balance	$ 15,834.5
Acquisitions	16.4
Divestitures	0
Adjustments to Acquisitions and Other	1.4
Ending balance	15,852.3
Group 1
Goodwill [Roll forward]
Beginning balance	7,312.4
Acquisitions	1.2
Divestitures	0
Adjustments to Acquisitions and Other	1
Ending balance	7,314.6
Group 2
Goodwill [Roll forward]
Beginning balance	6,445.5
Acquisitions	0.3
Divestitures	0
Adjustments to Acquisitions and Other	0.3
Ending balance	6,446.1
Group 3
Goodwill [Roll forward]
Beginning balance	2,076.6
Acquisitions	14.9
Divestitures	0
Adjustments to Acquisitions and Other	0.1
Ending balance	$ 2,091.6

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets, Net - Narrative (Details)	Mar. 31, 2024
Minimum
Finite-Lived Intangible Assets [Line Items]
Amortization period for other intangible assets	1 year
Maximum
Finite-Lived Intangible Assets [Line Items]
Amortization period for other intangible assets	15 years

Goodwill and Other Intangible_5

Goodwill and Other Intangible Assets, Net - Other Intangible Assets, Net (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
Gross Intangible Assets
Beginning balance	$ 685.3
Acquisitions	4.2
Adjustments and Other	0
Ending balance	689.5
Accumulated Amortization
Beginning balance	(189.1)
Additions Charged to Expense	(17.8)
Adjustments and Other	0
Ending balance	(206.9)
Other Intangible Assets, Net	482.6	$ 496.2
Customer relationships
Gross Intangible Assets
Beginning balance	631.7
Acquisitions	3.3
Adjustments and Other	0
Ending balance	635
Accumulated Amortization
Beginning balance	(165.7)
Additions Charged to Expense	(15.3)
Adjustments and Other	0
Ending balance	(181)
Other Intangible Assets, Net	454
Non-compete agreements
Gross Intangible Assets
Beginning balance	30.4
Acquisitions	0.9
Adjustments and Other	0
Ending balance	31.3
Accumulated Amortization
Beginning balance	(15.7)
Additions Charged to Expense	(1.5)
Adjustments and Other	0
Ending balance	(17.2)
Other Intangible Assets, Net	14.1
Other intangible assets
Gross Intangible Assets
Beginning balance	23.2
Acquisitions	0
Adjustments and Other	0
Ending balance	23.2
Accumulated Amortization
Beginning balance	(7.7)
Additions Charged to Expense	(1)
Adjustments and Other	0
Ending balance	(8.7)
Other Intangible Assets, Net	$ 14.5

Other Assets - Prepaid Expenses

Other Assets - Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Prepaid Expenses and Other Current Assets
Prepaid expenses	$ 124.3	$ 123
Inventories	101.4	97.3
Other non-trade receivables	73.5	63.2
Income taxes receivable	47.4	126.3
Reinsurance receivable	35.4	35.4
Prepaid fees for cloud-based hosting arrangements, current	24.6	17
Derivative and hedging assets	5.1	4.2
Other current assets	7.3	6.2
Total	$ 419	$ 472.6

Other Assets - Other Assets (De

Other Assets - Other Assets (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Other Assets
Investments	$ 584.2	$ 469.4
Operating right-of-use lease assets	228.9	238.1
Deferred compensation plan	119.6	112.7
Derivative and hedging assets	87.9	74.1
Reinsurance receivable	91.8	92.1
Deferred contract costs and sales commissions	82.1	82.5
Prepaid fees and capitalized implementation costs for cloud-based hosting arrangements	79.9	67.6
Amounts recoverable for capping, closure and post-closure obligations	22.5	21.9
Deferred financing costs	3.3	3.6
Other	19.2	21.9
Total	$ 1,319.4	$ 1,183.9

Other Liabilities (Details)

Other Liabilities (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Other Accrued Liabilities
Accrued payroll and benefits	$ 225.5	$ 350.5
Insurance reserves, current	215	216.6
Accrued fees and taxes	167.8	182.9
Accrued dividends	168.5	168.3
Operating right-of-use lease liabilities, current	53	54.8
Ceded insurance reserves, current	35.4	35.4
Accrued professional fees and legal settlement reserves	19.5	17.9
Derivative and hedging liabilities	7.2	8.3
Other	103.3	136.8
Total	995.2	1,171.5
Other Long-Term Liabilities
Operating right-of-use lease liabilities	185.8	194.9
Deferred compensation plan liability	122.1	114.7
Derivative and hedging liabilities	86	71.3
Ceded insurance reserves	91.8	92.1
Contingent purchase price and acquisition holdbacks	59.3	59.1
Withdrawal liability - multiemployer pension funds	19.5	19.6
Other	38.1	42.9
Total	$ 602.6	$ 594.6

Landfill and Environmental Co_3

Landfill and Environmental Costs - Narrative (Details) $ in Millions, cubicYard in Billions		3 Months Ended
	Sep. 27, 2018 USD ($)	Mar. 31, 2024 USD ($) cubicYard landfill	Mar. 31, 2023 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Environmental Exit Cost [Line Items]
Number of active solid waste landfills | landfill		207
Total available disposal capacity (in cubic yards) | cubicYard		5.1
Number of closed landfills | landfill		126
Amount of aggregate potential remediation liability		$ 375
Payments for management and monitoring of remediation area		9.8	$ 11.6
Remediation liability		479.8	$ 480.5	$ 485.4	$ 487.5
Bridgeton Landfill
Environmental Exit Cost [Line Items]
Payments for management and monitoring of remediation area		2.4
Remediation liability		71.2
Remediation liability expected to be paid during the remainder of the year		$ 11
West Lake Landfill Superfund Site
Environmental Exit Cost [Line Items]
Environmental exit costs, anticipated cost	$ 229
West Lake Landfill Superfund Site | Minimum
Environmental Exit Cost [Line Items]
Environmental exit costs, time period allotted for completion	4 years
West Lake Landfill Superfund Site | Maximum
Environmental Exit Cost [Line Items]
Environmental exit costs, time period allotted for completion	5 years

Landfill and Environmental Co_4

Landfill and Environmental Costs - Accrued Landfill and Environmental Costs (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023	Dec. 31, 2022
Environmental Remediation Obligations [Abstract]
Landfill final capping, closure and post-closure liabilities	$ 1,967.9	$ 1,937.2	$ 1,808.3	$ 1,786.4
Environmental remediation	479.8	485.4	$ 480.5	$ 487.5
Total accrued landfill and environmental costs	2,447.7	2,422.6
Less: current portion	(141.2)	(141.6)
Long-term portion	$ 2,306.5	$ 2,281

Landfill and Environmental Co_5

Landfill and Environmental Costs - Final Capping, Closure and Post-Closure Costs (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Activity in asset retirement obligation liabilities, which includes liabilities for final capping, closure and post-closure
Asset retirement obligation liabilities, beginning of year	$ 1,937.2	$ 1,786.4
Non-cash additions	14.3	15
Asset retirement obligation adjustments	(1.3)	(8.4)
Payments	(8.9)	(8.8)
Accretion expense	26.6	24.1
Asset retirement obligation liabilities, end of period	1,967.9	1,808.3
Less: current portion	(72.4)	(73.9)
Long-term portion	$ 1,895.5	$ 1,734.4

Landfill and Environmental Co_6

Landfill and Environmental Costs - Environmental Remediation Liability (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Activity in environmental remediation liabilities
Environmental remediation liabilities, beginning of year	$ 485.4	$ 487.5
Payments	(9.8)	(11.6)
Accretion expense (non-cash interest expense)	4.2	4.6
Environmental remediation liabilities, end of period	479.8	480.5
Less: current portion	(68.8)	(61.3)
Long-term portion	$ 411	$ 419.2

Debt - Carrying Values of Debt

Debt - Carrying Values of Debt Instruments (Details) - USD ($)	Mar. 31, 2024	Dec. 31, 2023	Oct. 31, 2023	Mar. 31, 2023	May 31, 2022	Jan. 31, 2022	Aug. 31, 2021	Mar. 06, 2020
Debt Instrument [Line Items]
Long-term debt, gross and lease obligation	$ 12,959,800,000	$ 12,949,100,000
Adjustments	(127,800,000)	(129,700,000)
Total Debt	12,832,000,000	12,819,400,000
Less: current portion	(1,431,900,000)	(932,300,000)
Long-term portion	11,400,100,000	11,887,100,000
Credit facilities: Uncommitted Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity						$ 200,000,000
Principal	24,200,000	0
Adjustments	0	0
Carrying Value	24,200,000	0
Credit facilities: August 2026
Debt Instrument [Line Items]
Principal	162,900,000	297,100,000
Adjustments	0	0
Carrying Value	162,900,000	297,100,000
Credit facilities: August 2026 | Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity			$ 3,500,000,000				$ 3,000,000,000
Credit facilities: Term Loan
Debt Instrument [Line Items]
Interest Rate								0.832%
Principal	500,000,000	500,000,000
Adjustments	0	0
Carrying Value	500,000,000	500,000,000
Credit facilities: Commercial Paper Facility
Debt Instrument [Line Items]
Maximum borrowing capacity			$ 1,500,000,000		$ 500,000,000
Principal	509,000,000	496,000,000
Adjustments	(700,000)	(700,000)
Carrying Value	$ 508,300,000	495,300,000
Senior notes: August 2024
Debt Instrument [Line Items]
Interest Rate	2.50%
Principal	$ 900,000,000	900,000,000
Adjustments	(700,000)	(1,200,000)
Carrying Value	$ 899,300,000	898,800,000
Senior notes: March 2025
Debt Instrument [Line Items]
Interest Rate	3.20%
Principal	$ 500,000,000	500,000,000
Adjustments	(700,000)	(900,000)
Carrying Value	$ 499,300,000	499,100,000
Senior notes: November 2025
Debt Instrument [Line Items]
Interest Rate	0.875%
Principal	$ 350,000,000	350,000,000
Adjustments	(1,100,000)	(1,200,000)
Carrying Value	$ 348,900,000	348,800,000
Senior notes: July 2026
Debt Instrument [Line Items]
Interest Rate	2.90%
Principal	$ 500,000,000	500,000,000
Adjustments	(1,500,000)	(1,600,000)
Carrying Value	$ 498,500,000	498,400,000
Senior notes: November 2027
Debt Instrument [Line Items]
Interest Rate	3.375%
Principal	$ 650,000,000	650,000,000
Adjustments	(2,300,000)	(2,500,000)
Carrying Value	$ 647,700,000	647,500,000
Senior notes: May 2028
Debt Instrument [Line Items]
Interest Rate	3.95%
Principal	$ 800,000,000	800,000,000
Adjustments	(8,400,000)	(8,900,000)
Carrying Value	$ 791,600,000	$ 791,100,000
Senior notes: April 2029
Debt Instrument [Line Items]
Interest Rate	4.875%	4.875%		4.875%
Principal	$ 750,000,000	$ 750,000,000
Adjustments	(6,900,000)	(6,900,000)
Carrying Value	$ 743,100,000	743,100,000
Senior notes: March 2030
Debt Instrument [Line Items]
Interest Rate	2.30%
Principal	$ 600,000,000	600,000,000
Adjustments	(4,400,000)	(4,500,000)
Carrying Value	$ 595,600,000	595,500,000
Senior notes: February 2031
Debt Instrument [Line Items]
Interest Rate	1.45%
Principal	$ 650,000,000	650,000,000
Adjustments	(6,000,000)	(6,200,000)
Carrying Value	$ 644,000,000	643,800,000
Senior notes: February 2032
Debt Instrument [Line Items]
Interest Rate	1.75%
Principal	$ 750,000,000	750,000,000
Adjustments	(5,200,000)	(5,400,000)
Carrying Value	$ 744,800,000	744,600,000
Senior notes: March 2033
Debt Instrument [Line Items]
Interest Rate	2.375%
Principal	$ 700,000,000	700,000,000
Adjustments	(6,300,000)	(6,500,000)
Carrying Value	$ 693,700,000	$ 693,500,000
Senior notes: December 2033
Debt Instrument [Line Items]
Interest Rate	5%	5%
Principal	$ 650,000,000	$ 650,000,000
Adjustments	(9,300,000)	(8,900,000)
Carrying Value	$ 640,700,000	641,100,000
Senior notes: April 2034
Debt Instrument [Line Items]
Interest Rate	5%			5%
Principal	$ 800,000,000	800,000,000		$ 800,000,000
Adjustments	(10,500,000)	(10,700,000)
Carrying Value	$ 789,500,000	789,300,000
Senior notes: March 2035
Debt Instrument [Line Items]
Interest Rate	6.086%
Principal	$ 181,900,000	181,900,000
Adjustments	(11,300,000)	(11,500,000)
Carrying Value	$ 170,600,000	170,400,000
Senior notes: March 2040
Debt Instrument [Line Items]
Interest Rate	6.20%
Principal	$ 399,900,000	399,900,000
Adjustments	(3,200,000)	(3,300,000)
Carrying Value	$ 396,700,000	396,600,000
Senior notes: May 2041
Debt Instrument [Line Items]
Interest Rate	5.70%
Principal	$ 385,700,000	385,700,000
Adjustments	(4,700,000)	(4,700,000)
Carrying Value	$ 381,000,000	381,000,000
Senior notes: March 2050
Debt Instrument [Line Items]
Interest Rate	3.05%
Principal	$ 400,000,000	400,000,000
Adjustments	(6,800,000)	(6,800,000)
Carrying Value	$ 393,200,000	393,200,000
Debentures: September 2035
Debt Instrument [Line Items]
Interest Rate	7.40%
Principal	$ 148,100,000	148,100,000
Adjustments	(28,500,000)	(28,800,000)
Carrying Value	119,600,000	119,300,000
Tax-exempt
Debt Instrument [Line Items]
Principal	1,389,100,000	1,289,100,000
Adjustments	(9,300,000)	(8,500,000)
Carrying Value	$ 1,379,800,000	1,280,600,000
Tax-exempt | Minimum
Debt Instrument [Line Items]
Interest Rate	3.70%
Tax-exempt | Maximum
Debt Instrument [Line Items]
Interest Rate	4.90%
Finance leases
Debt Instrument [Line Items]
Finance leases	$ 259,000,000	$ 251,300,000
Finance leases | Minimum
Debt Instrument [Line Items]
Interest Rate	0.806%
Finance leases | Maximum
Debt Instrument [Line Items]
Interest Rate	9.75%

Debt - Narrative (Details)

Debt - Narrative (Details) $ in Millions	1 Months Ended		3 Months Ended		12 Months Ended
	Sep. 30, 2023 USD ($)	Aug. 31, 2021 USD ($) extension	Mar. 31, 2024 USD ($)	Mar. 31, 2023 USD ($)	Mar. 31, 2025 USD ($)	Mar. 31, 2024 CAD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2023 CAD ($)	Oct. 31, 2023 USD ($)	Feb. 28, 2023 USD ($)	May 31, 2022 USD ($)	Apr. 29, 2022 USD ($)	Jan. 31, 2022 USD ($)	Mar. 06, 2020 USD ($)	Feb. 29, 2020 USD ($)	Aug. 31, 2019 USD ($)
Debt Instrument [Line Items]
Letters of credit utilizing availability under our credit facilities			$ 332,800,000				$ 336,500,000
Remaining borrowing capacity			2,495,300,000				2,371,200,000
Loss on extinguishment of debt			0	$ 200,000
Other comprehensive income (loss), cash flow hedge, gain (loss), before reclassification, after tax			5,100,000	5,200,000
(Loss) gain on cash flow hedging relationships			2,100,000	2,600,000
Derivative assets, noncurrent			87,900,000				74,100,000
Interest rate swap locks
Debt Instrument [Line Items]
Other comprehensive income (loss), cash flow hedge, gain (loss), before reclassification, after tax				1,700,000
Accumulated other comprehensive income (loss)			(15,000,000)				(15,900,000)
Effective portion of interest rate locks amortized as an adjustment to interest expense expected over the next twelve months			2,000,000
Interest rate swap locks | Interest Expense | Cash Flow Hedging
Debt Instrument [Line Items]
(Loss) gain on cash flow hedging relationships			(900,000)	(1,000,000)
2022 interest rate swap
Debt Instrument [Line Items]
Other comprehensive income (loss), cash flow hedge, gain (loss), before reclassification, after tax			5,100,000	3,500,000
Accumulated other comprehensive income (loss)			(6,400,000)				(4,300,000)
2022 interest rate swap | Interest Expense | Cash Flow Hedging
Debt Instrument [Line Items]
(Loss) gain on cash flow hedging relationships			3,000,000	3,600,000
Extended Interest Rate Swaps
Debt Instrument [Line Items]
Derivative asset			67,400,000				54,000,000
Terminated derivative, notional amount															$ 550,000,000	$ 375,000,000
Net gain (loss) on change in fair value of free-standing derivative instruments			13,600,000	(9,800,000)
Offsetting Interest Rate Swap
Debt Instrument [Line Items]
Derivative liabilities			87,800,000				78,200,000
Net gain (loss) on change in fair value of free-standing derivative instruments			(13,600,000)	$ 8,700,000
Revolving Credit Facility
Debt Instrument [Line Items]
Long-term debt			$ 162,900,000				297,100,000
Line of Credit | Revolving Credit Facility
Debt Instrument [Line Items]
Number of available extensions | extension		2
Extension period		1 year
Facility feature, increase limit		$ 1,000,000,000
Basis spread			0.91%
Term Loan Facility
Debt Instrument [Line Items]
Principal face amount of debt issued												$ 1,000,000,000
Term Loan Facility | US Ecology
Debt Instrument [Line Items]
Weighted average interest rate												6.227%
Uncommitted Revolver
Debt Instrument [Line Items]
Maximum borrowing capacity													$ 200,000,000
Principal			$ 24,200,000				0
Long-term debt			24,200,000				0
Credit facilities: August 2026
Debt Instrument [Line Items]
Principal			162,900,000				297,100,000
Long-term debt			$ 162,900,000				297,100,000
Credit facilities: August 2026 | Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity		$ 3,000,000,000							$ 3,500,000,000
Canadian Sublimit | Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity									1,000,000,000	$ 500,000,000
Long-term debt						$ 220.6		$ 201.5
Interest rate			6.225%			6.225%
Credit facilities: Commercial Paper Facility
Debt Instrument [Line Items]
Maximum borrowing capacity									$ 1,500,000,000		$ 500,000,000
Principal			$ 509,000,000				496,000,000
Long-term debt			$ 508,300,000				495,300,000
Weighted average interest rate			5.483%			5.483%
Credit facilities: Commercial Paper Facility | Weighted Average
Debt Instrument [Line Items]
Debt instrument, term			18 days
Term Loan Facility
Debt Instrument [Line Items]
Principal			$ 500,000,000				500,000,000
Long-term debt			500,000,000				500,000,000
Interest rate														0.832%
Term Loan Facility | 2022 interest rate swap
Debt Instrument [Line Items]
Derivative assets, noncurrent			25,600,000				24,300,000
Term Loan Facility | 2022 interest rate swap | Forecast
Debt Instrument [Line Items]
Effective portion of interest rate locks amortized as an adjustment to interest expense expected over the next twelve months					$ 5,000,000
Term Loan Facility | US Ecology | 2022 interest rate swap
Debt Instrument [Line Items]
Derivative, notional amount			340,000,000											$ 500,000,000
Derivative asset														$ 29,100,000
Senior notes: April 2029
Debt Instrument [Line Items]
Principal			750,000,000				750,000,000
Long-term debt			$ 743,100,000				$ 743,100,000
Interest rate			4.875%	4.875%		4.875%	4.875%	4.875%
Senior Notes Due April 2029 March Issuance
Debt Instrument [Line Items]
Principal				$ 400,000,000
Senior Notes Due April 2029 December Issuance
Debt Instrument [Line Items]
Principal							$ 350,000,000
Senior notes: March 2023
Debt Instrument [Line Items]
Interest rate				5%
Senior notes: March 2030
Debt Instrument [Line Items]
Principal			$ 600,000,000				600,000,000
Long-term debt			$ 595,600,000				595,500,000
Interest rate			2.30%			2.30%
Senior notes: August 2024
Debt Instrument [Line Items]
Principal			$ 900,000,000				900,000,000
Long-term debt			$ 899,300,000				898,800,000
Interest rate			2.50%			2.50%
Tax-exempt financings
Debt Instrument [Line Items]
Principal			$ 1,389,100,000				1,289,100,000
Long-term debt			1,379,800,000				1,280,600,000
Solid Waste Disposal Revenue Bonds
Debt Instrument [Line Items]
Principal	$ 100,000,000		100,000,000
Debt instrument, term	10 years
Finance leases
Debt Instrument [Line Items]
Present value of lease liabilities			$ 259,000,000				$ 251,300,000

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Tax Credit Carryforward [Line Items]
Effective tax rate	24.20%	26.50%
Cash paid (refunded) for income taxes	$ 7.8	$ 7.7
Liability for penalties	0.3
Liability for interest related to uncertain tax positions	14.2
State Loss Carryforwards
Tax Credit Carryforward [Line Items]
Deferred tax assets, valuation allowance	$ 43.6

Stock Repurchases, Dividends _3

Stock Repurchases, Dividends and Earnings per Share - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended	3 Months Ended
	Feb. 29, 2024	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023	Oct. 31, 2023
Dividends Payable [Line Items]
Reserve for stock issuance (in shares)		11,300,000
Share repurchase authorized amount					$ 3,000
Number of shares repurchased (in shares)		0	0
Stock repurchased and pending settlement (in shares)		0	0
Remaining authorized repurchase amount		$ 3,000
Quarterly dividend declared (in dollars per share)	$ 0.535	$ 0.535	$ 0.495
Cash dividends declared		$ 168.5	$ 156.5
Quarterly dividend payable		$ 168.5		$ 168.3
Antidilutive securities (in shares)		0	100,000
Retained Earnings
Dividends Payable [Line Items]
Cash dividends declared		$ 168.5	$ 156.5

Stock Repurchases, Dividends _4

Stock Repurchases, Dividends and Earnings per Share - Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Basic earnings per share:
Net income attributable to Republic Services, Inc.	$ 453,794	$ 383,852
Weighted average common shares outstanding (in shares)	315,294	316,712
Basic earnings per share (in dollars per share)	$ 1.44	$ 1.21
Effect of dilutive securities:
Weighted average common and common equivalent shares outstanding (in shares)	315,693	317,142
Diluted earnings per share (in dollars per share)	$ 1.44	$ 1.21
Restricted stock units
Effect of dilutive securities:
Unvested awards (in shares)	125	75
Phantom Share Units (PSUs)
Effect of dilutive securities:
Unvested awards (in shares)	274	355

Changes in Accumulated Other _3

Changes in Accumulated Other Comprehensive Loss by Component - Summary of Changes in AOCI (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	$ 10,543.5	$ 9,686.8
Other comprehensive income before reclassifications	8.9
Amounts reclassified from accumulated other comprehensive loss	(2.1)
Net current period other comprehensive income	6.8	2.8
Balance at end of period	10,820.6	$ 9,917.3
Total
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(12.1)
Balance at end of period	(5.3)
Cash Flow Hedges
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(11.6)
Other comprehensive income before reclassifications	5.1
Amounts reclassified from accumulated other comprehensive loss	(2.1)
Net current period other comprehensive income	3
Balance at end of period	(8.6)
Defined Benefit Pension Items
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	8.9
Other comprehensive income before reclassifications	0
Amounts reclassified from accumulated other comprehensive loss	0
Net current period other comprehensive income	0
Balance at end of period	8.9
Foreign Currency Translation
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(9.4)
Other comprehensive income before reclassifications	3.8
Amounts reclassified from accumulated other comprehensive loss	0
Net current period other comprehensive income	3.8
Balance at end of period	$ (5.6)

Changes in Accumulated Other _4

Changes in Accumulated Other Comprehensive Loss by Component - Summary of Reclassifications Out of AOCI (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Gain (loss) on cash flow hedges:
Interest expense	$ (139.3)	$ (126.7)
Total before tax	598.9	522.1
Tax provision	(145.2)	(138.2)
Net income	453.7	383.9
Amount Reclassified from Accumulated Other Comprehensive Income
Gain (loss) on cash flow hedges:
Net income	2.1	2.6
Amount Reclassified from Accumulated Other Comprehensive Income | Cash Flow Hedges
Gain (loss) on cash flow hedges:
Total before tax	2.8	3.5
Tax provision	(0.7)	(0.9)
Amount Reclassified from Accumulated Other Comprehensive Income | Cash Flow Hedges | Terminated interest rate locks
Gain (loss) on cash flow hedges:
Interest expense	(1.2)	(1.4)
Amount Reclassified from Accumulated Other Comprehensive Income | Cash Flow Hedges | 2022 interest rate swap
Gain (loss) on cash flow hedges:
Interest expense	$ 4	$ 4.9

Financial Instruments - Derivat

Financial Instruments - Derivative Hedging Activities (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Interest expense	$ (139.3)	$ (126.7)
Amount of (loss) gain reclassified from accumulated other comprehensive loss into earnings, net of tax:
(Loss) gain on cash flow hedging relationships	2.1	2.6
Interest Expense | Interest rate swap locks | Cash Flow Hedging
Amount of (loss) gain reclassified from accumulated other comprehensive loss into earnings, net of tax:
(Loss) gain on cash flow hedging relationships	(0.9)	(1)
Interest Expense | 2022 interest rate swap | Cash Flow Hedging
Amount of (loss) gain reclassified from accumulated other comprehensive loss into earnings, net of tax:
(Loss) gain on cash flow hedging relationships	3	3.6
Interest Expense | Interest Rate Contract
Gain (loss) on free-standing derivative instruments:
Net gain (loss) on change in fair value of free-standing derivative instruments	$ 0	$ (1.1)

Financial Instruments - Assets

Financial Instruments - Assets and Liabilities Measured at Fair Value (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Liabilities:
Contingent consideration - other accrued liabilities and other long-term liabilities	$ 59.3	$ 59.1
Fair Value, Measurements, Recurring
Assets:
Derivative and hedging assets - prepaid and other current assets and other assets	93	78.3
Total assets	213.9	197.7
Liabilities:
Derivative and hedging liabilities - other accrued liabilities and other long-term liabilities	93.2	79.6
Contingent consideration - other accrued liabilities and other long-term liabilities	63.7	63.6
Total liabilities	156.9	143.2
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets (Level 1)
Assets:
Derivative and hedging assets - prepaid and other current assets and other assets	0	0
Total assets	44.1	43.1
Liabilities:
Derivative and hedging liabilities - other accrued liabilities and other long-term liabilities	0	0
Contingent consideration - other accrued liabilities and other long-term liabilities	0	0
Total liabilities	0	0
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)
Assets:
Derivative and hedging assets - prepaid and other current assets and other assets	93	78.3
Total assets	169.8	154.6
Liabilities:
Derivative and hedging liabilities - other accrued liabilities and other long-term liabilities	93.2	79.6
Contingent consideration - other accrued liabilities and other long-term liabilities	0	0
Total liabilities	93.2	79.6
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)
Assets:
Derivative and hedging assets - prepaid and other current assets and other assets	0	0
Total assets	0	0
Liabilities:
Derivative and hedging liabilities - other accrued liabilities and other long-term liabilities	0	0
Contingent consideration - other accrued liabilities and other long-term liabilities	63.7	63.6
Total liabilities	63.7	63.6
Carrying Amount
Assets:
Derivative and hedging assets - prepaid and other current assets and other assets	93	78.3
Total assets	213.9	197.7
Liabilities:
Derivative and hedging liabilities - other accrued liabilities and other long-term liabilities	93.2	79.6
Contingent consideration - other accrued liabilities and other long-term liabilities	63.7	63.6
Total liabilities	156.9	143.2
Money market mutual funds | Fair Value, Measurements, Recurring
Assets:
Money market mutual funds	44.1	43.1
Money market mutual funds | Fair Value, Measurements, Recurring | Quoted Prices in Active Markets (Level 1)
Assets:
Money market mutual funds	44.1	43.1
Money market mutual funds | Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)
Assets:
Money market mutual funds	0	0
Money market mutual funds | Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)
Assets:
Money market mutual funds	0	0
Money market mutual funds | Carrying Amount
Assets:
Money market mutual funds	44.1	43.1
Bonds | Fair Value, Measurements, Recurring
Assets:
Bonds - restricted cash and marketable securities and other assets	76.8	76.3
Bonds | Fair Value, Measurements, Recurring | Quoted Prices in Active Markets (Level 1)
Assets:
Bonds - restricted cash and marketable securities and other assets	0	0
Bonds | Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)
Assets:
Bonds - restricted cash and marketable securities and other assets	76.8	76.3
Bonds | Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)
Assets:
Bonds - restricted cash and marketable securities and other assets	0	0
Bonds | Carrying Amount
Assets:
Bonds - restricted cash and marketable securities and other assets	$ 76.8	$ 76.3

Financial Instruments - Narrati

Financial Instruments - Narrative (Details) - USD ($)	3 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
Derivative [Line Items]
Long-term debt, carrying value	$ 12,832,000,000	$ 12,819,400,000
Contingent consideration - other accrued liabilities and other long-term liabilities	59,300,000	59,100,000
Waste Management Contract, Sonoma County
Derivative [Line Items]
Contingent consideration - other accrued liabilities and other long-term liabilities	59,000,000
Potential undiscounted future contingent liability payments, minimum	81,000,000
Potential undiscounted future contingent liability payments, maximum	114,000,000
Change in contingent consideration, liability	0
Estimate of Fair Value Measurement
Derivative [Line Items]
Long-term debt	$ 12,300,000,000	$ 12,500,000,000

Segment Reporting - Narrative (

Segment Reporting - Narrative (Details)	3 Months Ended
	Mar. 31, 2024 segment
Segment Reporting [Abstract]
Number of operating segments	3

Segment Reporting - Financial I

Segment Reporting - Financial Information by Regional Segment (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Segment Reporting Information [Line Items]
Gross Revenue	$ 4,439.2	$ 4,147.2
Intercompany Revenue	(577.5)	(566.1)
Revenue allocations	0	0
Net Revenue	3,861.7	3,581.1
Adjusted EBITDA	1,164.5	1,040
Capital Expenditures	514.5	378.6
Total assets	31,381.7	29,081.4	$ 31,410.1
Recycling & Waste Subtotal
Segment Reporting Information [Line Items]
Gross Revenue	3,931.2	3,658.6
Intercompany Revenue	(549.1)	(529.7)
Revenue allocations	56.3	43.9
Net Revenue	3,438.4	3,172.8
Adjusted EBITDA	1,077.8	954.3
Capital Expenditures	307.2	197.8
Total assets	24,561.7	22,988.3
Group 1
Segment Reporting Information [Line Items]
Gross Revenue	2,018	1,840.3
Intercompany Revenue	(300.7)	(287.1)
Revenue allocations	29.1	22.3
Net Revenue	1,746.4	1,575.5
Adjusted EBITDA	558.8	489.4
Capital Expenditures	186.5	112.5
Total assets	13,632.1	12,357.4
Group 2
Segment Reporting Information [Line Items]
Gross Revenue	1,913.2	1,818.3
Intercompany Revenue	(248.4)	(242.6)
Revenue allocations	27.2	21.6
Net Revenue	1,692	1,597.3
Adjusted EBITDA	519	464.9
Capital Expenditures	120.7	85.3
Total assets	10,929.6	10,630.9
Group 3
Segment Reporting Information [Line Items]
Gross Revenue	428.4	421.2
Intercompany Revenue	(11.4)	(14.8)
Revenue allocations	6.3	1.9
Net Revenue	423.3	408.3
Adjusted EBITDA	86.7	85.7
Capital Expenditures	34.7	22.4
Total assets	4,374.8	3,992.2
Corporate entities and other
Segment Reporting Information [Line Items]
Gross Revenue	79.6	67.4
Intercompany Revenue	(17)	(21.6)
Revenue allocations	(62.6)	(45.8)
Net Revenue	0	0
Adjusted EBITDA	0	0
Capital Expenditures	172.6	158.4
Total assets	$ 2,445.2	$ 2,100.9

Segment Reporting - Adjusted EB

Segment Reporting - Adjusted EBITDA and Adjusted EBITDA Margin (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Segment Reporting Information [Line Items]
Adjusted EBITDA	$ 1,164.5	$ 1,040
Other income, net	(12.6)	(2.5)
Interest income	(1.5)	(1.4)
Interest expense	139.3	126.7
Depreciation, amortization and depletion	399.2	358.7
Accretion	26.6	24.1
Loss (income) from unconsolidated equity method investment	8.7	(1)
Loss on extinguishment of debt and other related costs	0	0.2
Restructuring charges	5.9	5.5
US Ecology, Inc. acquisition integration and deal costs	0	7.6
Income before income taxes	598.9	522.1
Group 1
Segment Reporting Information [Line Items]
Adjusted EBITDA	558.8	489.4
Group 2
Segment Reporting Information [Line Items]
Adjusted EBITDA	519	464.9
Group 3
Segment Reporting Information [Line Items]
Adjusted EBITDA	$ 86.7	$ 85.7

Revenue and Credit Losses - Dis

Revenue and Credit Losses - Disaggregation (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Disaggregation of Revenue [Line Items]
Net Revenue	$ 3,861.7	$ 3,581.1
Revenue as a percentage of total revenue	100%	100%
Transfer
Disaggregation of Revenue [Line Items]
Net Revenue	$ 182.8	$ 173.7
Revenue as a percentage of total revenue	4.70%	4.80%
Landfill
Disaggregation of Revenue [Line Items]
Net Revenue	$ 404.4	$ 392.6
Revenue as a percentage of total revenue	10.40%	11%
Environmental solutions
Disaggregation of Revenue [Line Items]
Net Revenue	$ 423.3	$ 408.3
Revenue as a percentage of total revenue	11%	11.40%
Other
Disaggregation of Revenue [Line Items]
Net Revenue	$ 188.4	$ 148.1
Revenue as a percentage of total revenue	4.90%	4.20%
Recycling processing and commodity sales
Disaggregation of Revenue [Line Items]
Net Revenue	$ 95.5	$ 70.7
Revenue as a percentage of total revenue	2.50%	2%
Other non-core
Disaggregation of Revenue [Line Items]
Net Revenue	$ 92.9	$ 77.4
Revenue as a percentage of total revenue	2.40%	2.20%
Operating Segments | Collection
Disaggregation of Revenue [Line Items]
Net Revenue	$ 2,662.8	$ 2,458.4
Revenue as a percentage of total revenue	69%	68.60%
Operating Segments | Residential
Disaggregation of Revenue [Line Items]
Net Revenue	$ 723.3	$ 685.1
Revenue as a percentage of total revenue	18.70%	19.10%
Operating Segments | Small-container
Disaggregation of Revenue [Line Items]
Net Revenue	$ 1,189	$ 1,056.3
Revenue as a percentage of total revenue	30.80%	29.50%
Operating Segments | Large-container
Disaggregation of Revenue [Line Items]
Net Revenue	$ 732.8	$ 701.9
Revenue as a percentage of total revenue	19%	19.60%
Operating Segments | Other
Disaggregation of Revenue [Line Items]
Net Revenue	$ 17.7	$ 15.1
Revenue as a percentage of total revenue	0.50%	0.40%
Operating Segments | Transfer
Disaggregation of Revenue [Line Items]
Net Revenue	$ 419.3	$ 401
Operating Segments | Landfill
Disaggregation of Revenue [Line Items]
Net Revenue	704.8	688.7
Operating Segments | Environmental solutions
Disaggregation of Revenue [Line Items]
Net Revenue	439.2	430.3
Intersegment Eliminations | Transfer
Disaggregation of Revenue [Line Items]
Net Revenue	(236.5)	(227.3)
Intersegment Eliminations | Landfill
Disaggregation of Revenue [Line Items]
Net Revenue	(300.4)	(296.1)
Intersegment Eliminations | Environmental solutions
Disaggregation of Revenue [Line Items]
Net Revenue	$ (15.9)	$ (22)

Revenue and Credit Losses - Nar

Revenue and Credit Losses - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Capitalized Contract Cost [Line Items]
Deferred contract costs and sales commissions	$ 82.1		$ 82.5
Capitalized sales commissions to selling, general and administrative expenses
Capitalized Contract Cost [Line Items]
Capitalized contract cost, amortization	3.8	$ 3.6
Other deferred contract costs as a reduction of revenue
Capitalized Contract Cost [Line Items]
Capitalized contract cost, amortization	$ 1.1	$ 1.3

Revenue and Credit Losses - All

Revenue and Credit Losses - Allowance for Doubtful Accounts (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of year	$ 83.2	$ 51.9
Additions charged to expense	7.3	7.8
Accounts written-off	(7.9)	(0.9)
Balance at end of period	$ 82.6	$ 58.8

Commitments and Contingencies -

Commitments and Contingencies - Legal Proceedings (Details) $ in Millions	Mar. 31, 2024 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Losses accrued related to legal proceedings	$ 18
Loss contingency additional potential liability	$ 13

Commitments and Contingencies_2

Commitments and Contingencies - Cash, Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023	Dec. 31, 2022
Commitments and Contingencies Disclosure [Abstract]
Cash and cash equivalents	$ 91.6	$ 140	$ 132.2	$ 143.4
Restricted cash and marketable securities	143.3	163.6	132.7	127.6
Less: restricted marketable securities	(76.5)	(76.1)	(58.2)	(56.7)
Cash, cash equivalents, restricted cash and restricted cash equivalents	$ 158.4	$ 227.5	$ 206.7	$ 214.3

Commitments and Contingencies_3

Commitments and Contingencies - Restricted Cash and Marketable Securities (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023	Dec. 31, 2022
Restricted Cash and Marketable Securities [Abstract]
Capping, closure and post-closure obligations	$ 43.7	$ 43.2
Insurance	99.6	120.4
Total restricted cash and marketable securities	$ 143.3	$ 163.6	$ 132.7	$ 127.6