GFL Environmental (GFL) 20-F26 Feb 212020 FY Annual report (foreign)Financial data

Company Profile

Cover

Cover	12 Months Ended
Cover	Dec. 31, 2020shares
Document Information [Line Items]
Document Type	20-F
Document Annual Report	true
Document Period End Date	Dec. 31, 2020
Document Transition Report	false
Document Shell Company Report	false
Entity File Number	001-39240
Entity Registrant Name	GFL ENVIRONMENTAL INC.
Entity Address, Address Line One	100 New Park Place,
Entity Address, Address Line Two	Suite 500,
Entity Address, City or Town	Vaughan,
Entity Address, State or Province	ON
Entity Address, Postal Zip Code	L4K 0H9
Entity Address, Country	CA
Entity Incorporation, State or Country Code	A6
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	false
Document Accounting Standard	International Financial Reporting Standards
Entity Shell Company	false
Current Fiscal Year End Date	--12-31
Amendment Flag	false
Document Fiscal Year Focus	2020
Entity Central Index Key	0001780232
Document Fiscal Period Focus	FY
Document Registration Statement	false
Subordinate voting shares
Document Information [Line Items]
Trading Symbol	GFL
Title of 12(b) Security	Subordinate voting shares
Security Exchange Name	NYSE
Entity Common Stock, Shares Outstanding	314,300,421
Tangible equity units
Document Information [Line Items]
Trading Symbol	GFLU
Title of 12(b) Security	Tangible equity units
Security Exchange Name	NYSE
Multiple voting shares
Document Information [Line Items]
Entity Common Stock, Shares Outstanding	12,062,964
Series A perpetual convertible preferred shares
Document Information [Line Items]
Entity Common Stock, Shares Outstanding	28,571,428
Business Contact
Document Information [Line Items]
Entity Address, Address Line One	100 New Park Place,
Entity Address, Address Line Two	Suite 500,
Entity Address, City or Town	Vaughan,
Entity Address, State or Province	ON
Entity Address, Postal Zip Code	L4K 0H9
Contact Personnel Name	Patrick Dovigi
City Area Code	905
Local Phone Number	326-0101

Consolidated Statements of Oper

Consolidated Statements of Operations and Comprehensive Loss - CAD ($) $ in Millions	5 Months Ended	7 Months Ended	12 Months Ended
	May 31, 2018	Dec. 31, 2018	Dec. 31, 2020	Dec. 31, 2019
Consolidated Statements of Operations and Comprehensive Loss
Revenue	$ 627.8	$ 1,224.8	$ 4,196.2	$ 3,346.9
Expenses
Cost of sales	551.2	1,152.3	4,006.1	3,073.1
Selling, general and administrative expenses	126.5	217.7	508.4	396.5
Interest and other finance costs	127.4	242.2	597.6	532.2
Deferred purchase consideration	1	1	2	2
Loss (gain) on sale of property and equipment	(0.1)	4.7	4.6	1.2
(Gain) loss on foreign exchange	16.6	39.6	(37.3)	(48.9)
Mark-to-market loss on Purchase Contracts	0	0	449.2	0
Impairment and other charges	0	0	21.4	0
Other income	(3.2)	0	0	0
Total expenses by nature	819.4	1,657.5	5,552	3,956.1
Loss before income taxes	(191.6)	(432.7)	(1,355.8)	(609.2)
Current income tax expense	1.8	1.3	1.3	3.1
Deferred tax recovery	(28.7)	(115.3)	(362.2)	(160.6)
Income tax recovery	(26.9)	(114)	(360.9)	(157.5)
Net loss	(164.7)	(318.7)	(994.9)	(451.7)
Items that may be subsequently reclassified to net loss
Currency translation adjustment	13.2	72.4	(227.5)	(102.8)
Reclassification to net loss of fair value movements on cash flow hedges, net of tax			(13.1)
Fair value movements on cash flow hedges, net of tax	3.8	(33.5)	1.8	61.2
Other comprehensive (loss) income	17	38.9	(238.8)	(41.6)
Total comprehensive loss	$ (147.7)	$ (279.7)	$ (1,233.7)	$ (493.3)
Loss per share
Basic and Diluted	$ (0.29)	$ (2.14)	$ (2.80)	$ (2.50)
Basic (in dollars per share)	$ (0.29)	$ (2.14)	$ (2.80)	$ (2.50)

Consolidated Statements of Fina

Consolidated Statements of Financial Position - CAD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Assets
Cash	$ 27.2	$ 574.8
Trade and other receivables, net of allowance	867.3	713.4
Prepaid expenses and other assets	133.7	132.1
Current assets	1,028.2	1,420.3
Property and equipment, net	5,074.8	2,850.1
Intangible assets, net	3,093.4	2,848
Other long-term assets	33.2	31.6
Goodwill	6,500.4	5,173.8
Non-current assets	14,701.8	10,903.5
Total assets	15,730	12,323.8
Liabilities
Accounts payable and accrued liabilities	1,014.8	732
Income taxes payable	9.1	2.9
Current portion of long-term debt	4.6	64.4
Current portion of lease obligations	37.5	33.2
Current portion of due to related party	12.8	7
Current portion of tangible equity units	59.2	0
Current portion of landfill closure and post-closure obligations	55.3	25.6
Current liabilities	1,193.3	865.1
Long-term debt	6,161.5	7,560.7
Lease obligations	153.7	158.9
Other long-term liabilities	37.2	12.4
Due to related party	30.8	14
Deferred income tax liabilities	466	733.8
Tangible equity units	1,327.9	0
Landfill closure and post-closure obligations	680.3	211
Non-current liabilities	8,857.4	8,690.8
Total liabilities	10,050.7	9,555.9
Shareholders' equity
Share capital	7,644.8	3,524.5
Contributed surplus	54.3	16.4
Deficit	(1,778.3)	(770.3)
Accumulated other comprehensive loss	(241.5)	(2.7)
Total shareholders' equity	5,679.3	2,767.9
Total liabilities and shareholders' equity	$ 15,730	$ 12,323.8

Consolidated Statements of Chan

Consolidated Statements of Changes in Shareholders' Equity - CAD ($) $ in Millions	Share capital	Contributed surplus	Deficit	Total	Cash flow hedges, net of tax	Currency translation	Total
Equity at beginning of period (in shares) at Dec. 31, 2017	0
Equity at beginning of period at Dec. 31, 2017	$ 879.5	$ 21.1	$ (381.6)	$ (10)	$ 9	$ (19)	$ 509
Changes in equity [abstract]
Net loss and comprehensive loss			(164.7)	17	3.8	13.2	(147.7)
Return of capital	(25.2)						(25.2)
Share capital issued, net of cancelled shares	$ 8.3	384.2					392.5
Share-based payments		18.8					18.8
Equity at end of period (in shares) at May. 31, 2018	0
Equity at end of period at May. 31, 2018	$ 862.6	424.1	(546.3)	7	12.8	(5.8)	747.4
Changes in equity [abstract]
Net loss and comprehensive loss			(318.7)	38.9	(33.5)	72.4	(279.7)
Share capital issued upon acquisition of subsidiary (in shares)	121,700,362
Share capital issued upon acquisition of subsidiary	$ 261.2						261.2
Share capital issued upon loan to related party (in shares)	1,226,571
Share capital issued upon loan to related party	$ 1.2						1.2
Share capital issued, net of cancelled shares (in shares)	54,966,815
Share capital issued, net of cancelled shares	$ 3,208						3,208
Share-based payments		2					2
Equity at end of period (in shares) at Dec. 31, 2018	177,893,748
Equity at end of period at Dec. 31, 2018	$ 3,470.4	2	(318.7)	38.9	(33.5)	72.4	3,192.6
Changes in equity [abstract]
Net loss and comprehensive loss			(451.7)	(41.6)	61.2	(102.8)	(493.3)
Return of capital	$ (5.8)						(5.8)
Share capital issued, net of cancelled shares (in shares)	2,900,455
Share capital issued, net of cancelled shares	$ 59.9						59.9
Share-based payments		14.5					14.5
Equity at end of period (in shares) at Dec. 31, 2019	180,794,203
Equity at end of period at Dec. 31, 2019	$ 3,524.5	16.4	(770.3)	(2.7)	27.6	(30.4)	2,767.9
Changes in equity [abstract]
Net loss and comprehensive loss			(994.9)	(238.8)	(11.3)	(227.5)	(1,233.7)
Return of capital	$ (0.8)						(0.8)
Dividends issued and paid			(13.1)				(13.1)
Share capital issued upon acquisition of subsidiary (in shares)	3,092,118
Share capital issued upon acquisition of subsidiary	$ 78.4						78.4
Share capital issued, net of cancelled shares (in shares)	171,048,492
Share capital issued, net of cancelled shares	$ 4,103.4						4,103.4
Share issuance costs	$ (60.7)						(60.7)
Share-based payments		37.9					37.9
Equity at end of period (in shares) at Dec. 31, 2020	354,934,813
Equity at end of period at Dec. 31, 2020	$ 7,644.8	$ 54.3	$ (1,778.3)	$ (241.5)	$ 16.3	$ (257.9)	$ 5,679.3

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - CAD ($) $ in Millions	5 Months Ended	7 Months Ended	12 Months Ended
	May 31, 2018	Dec. 31, 2018	Dec. 31, 2020	Dec. 31, 2019
Operating activities
Net loss	$ (164.7)	$ (318.7)	$ (994.9)	$ (451.7)
Adjustments for non-cash items
Depreciation of property and equipment	66.3	178.2	810.6	465.3
Amortization of intangible assets	40.9	127.5	427	334.1
Impairment and other charges	0	0	21.4	0
Interest and other finance costs	127.4	242.2	597.6	532.2
Share based payments	18.8	2	37.9	14.5
(Gain) loss on unrealized foreign exchange on long-term debt and TEUs	6	36.6	(37.3)	(50.1)
Loss (gain) on sale of property and equipment	(0.1)	4.7	4.6	1.2
Mark-to-market loss on Purchase Contracts	0	0	449.2	0
Mark-to-market loss on fuel hedges	0	2.8	1.8	1
Current income tax expense	1.8	1.3	1.3	3.1
Deferred tax recovery	(28.7)	(115.3)	(362.2)	(160.6)
Interest paid in cash, net	(119.9)	(91.3)	(442.6)	(343.7)
Income taxes refund received (paid) in cash, net	(0.4)	0.6	4.3	(4.1)
Changes in non-cash working capital items	44.3	(30.3)	5.2	(74.9)
Landfill closure and post-closure expenditures	(1.8)	(10.9)	(21.7)	(15.3)
Cash flows from (used in) operating activities	(10.1)	29.4	502.2	251
Investing activities
Proceeds on disposal of assets	0.6	2	16	20.8
Purchase of property and equipment and intangible assets	(52.3)	(160.3)	(428.3)	(457.8)
Business acquisitions, net of cash acquired	(332.1)	(6,648.3)	(3,941.2)	(721.3)
Cash released from escrow for acquisitions	12.6	0	0	0
Cash flows from (used in) investing activities	(371.2)	(6,806.6)	(4,353.5)	(1,158.3)
Financing activities
Repayment of lease obligations	0	0	(72.7)	(57.8)
Issuance of long-term debt	2,205.4	3,559.4	4,667.9	3,143.8
Repayment of long-term debt	(2,117.4)	(72.2)	(6,200.3)	(1,569.9)
Payment of contingent purchase consideration	0	0	(31.1)	(8.6)
Issuance of share capital, net of issuance costs	384.2	3,208	4,042.7	0
Issuance of TEUs, net of issuance costs	0	0	1,006.9	0
Repayment of Amortizing Notes	0	0	(42.8)	0
Dividends issued and paid	0	0	(13.1)	0
Return of capital	(5.1)	0	(0.8)	(5.8)
Payment of financing costs	(42.4)	(63.6)	(41)	(20.7)
Issuance of loan from related party	67.9	35	29	0
Repayment of loan to related party	0	(3.5)	(6.4)	(10.5)
Cheques issued in excess of cash on hand	(3.9)	0	0	0
Cash flows from (used in) financing activities	488.7	6,663.1	3,338.3	1,470.5
(Decrease) increase in cash	107.4	(114.1)	(513)	563.2
Changes due to foreign exchange revaluation of cash	(12.9)	27	(34.6)	4.2
Cash, beginning of year	0	94.5	574.8	7.4
Cash, end of year	$ 94.5	$ 7.4	$ 27.2	$ 574.8

REPORTING ENTITY

REPORTING ENTITY	12 Months Ended
REPORTING ENTITY	Dec. 31, 2020
REPORTING ENTITY
REPORTING ENTITY	1. REPORTING ENTITY GFL Environmental Holdings Inc. (old) (the "Predecessor") was incorporated on October 30, 2014 under the laws of the Province of Ontario. The Predecessor consisted of GFL Environmental Holdings Inc., and its wholly owned subsidiaries Green Investments Two Inc., 10529273 Canada Inc. and GFL Environmental Inc., all of which the Predecessor controlled. GFL Environmental Holdings Inc. (new) (the "Successor") was formed on May 31, 2018 on the amalgamation of the Predecessor with Hulk Acquisitions Corp. (which was incorporated on April 18, 2018) under the laws of the Province of Ontario and was an investment holding company. Prior to its amalgamation with GFL Environmental Holdings Inc., Hulk Acquisitions Corp. did not have any assets or operations. On May 31, 2018, the Successor acquired control of the Predecessor. GFL Environmental Inc. (“GFL” or the “Company”) was formed on March 5, 2020 under the laws of the Province of Ontario as a result of the amalgamation of GFL Environmental Inc. and its parent company GFL Environmental Holdings Inc. (new) (“Holdings”). The amalgamation was accounted for as a transaction between entities under common control and the net assets are recorded at historical cost retrospectively. Upon amalgamation, GFL became the financial reporting entity. Concurrently with the amalgamation, GFL completed an initial public offering of subordinate voting shares and tangible equity units (“TEUs”) (collectively, “the IPO”). GFL’s subordinate voting shares trade on the New York Stock Exchange and the Toronto Stock Exchange under the symbol “GFL” and the TEUs trade on the New York Stock Exchange under the symbol “GFLU”. GFL is in the business of providing non-hazardous solid waste management, infrastructure and soil remediation services and liquid waste management services. These services are provided through wholly owned subsidiaries of GFL and a network of facilities across Canada and in 27 states in the United States. GFL’s registered office is Suite 500, 100 New Park Place, Vaughan, ON, L4K 0H9. The audited consolidated financial statements as at December 31, 2020, and December 31, 2019 and for the year ended December 31, 2020, the year ended December 31, 2019 and the period from June 1, 2018 to December 31, 2018, represent the consolidated financial information of the Successor. Prior to, and including, May 31, 2018, the audited consolidated financial statements include the accounts of the Predecessor. Due to the change in the basis of accounting resulting from the application of the acquisition method of accounting, the Predecessor’s audited consolidated financial statements and the Successor’s audited consolidated financial statements are not comparable. These audited consolidated financial statements (the “Annual Financial Statements”) include the accounts of GFL and its subsidiaries as of December 31, 2020. The Board of Directors approved these Annual Financial Statements on February 25, 2021.

SUMMARY OF SIGNIFICANT ACCOUNTI

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	12 Months Ended
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	Dec. 31, 2020
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Basis of presentation These Annual Financial Statements have been prepared in accordance with International Financial Reporting Standards ("IFRS"), as issued by the International Accounting Standards Board ("IASB"). Reclassification of prior year presentation Certain revenue disaggregation and segment reporting balances reported in prior periods have been reclassified for consistency with the current period presentation. These immaterial reclassifications had no effect on the reported consolidated results of operations. In the second quarter of 2019, GFL revised its accounting policy in regard to the presentation in certain "Other" revenue to reflect changes made in the manner in which results were being internally reported and managed. As a result of the policy revision, revenue previously disclosed as attributable to a specific service line was reclassified as "Other" revenue within the revenue by service line disclosure. During the year ended December 31, 2020, GFL moved one of its business units from its Infrastructure and soil remediation segment to its Solid waste segment to make the segment presentation consistent with an internal management reorganization. This move resulted in a decrease in Solid waste revenue and an increase in Infrastructure and soil remediation revenue. Also, during the year ended December 31, 2020, GFL harmonized the presentation of intercompany revenues across all of its business units for internal reporting purposes to align with how our chief operating decision maker (“CODM”) reviews results, which resulted in an increase to the amounts disclosed for Landfill, Transfer, Material Recovery and Intercompany revenue within GFL’s revenue by service type disclosure. Additionally, during the year ended December 31, 2020, GFL harmonized the presentation of corporate costs, which resulted in an increase to the amounts disclosed in Corporate and a decrease in Solid USA. All previously reported revenue by service type and segment information has been retrospectively adjusted to conform to the updated 2020 presentation. GFL has amended certain 2019 and 2018 balances due to rounding. Basis of measurement GFL’s Annual Financial Statements were prepared on the historical cost basis except for certain financial instruments that are measured at fair value at the end of the reporting period (see Note 19). Presentation and functional currency These Annual Financial Statements are presented in Canadian dollars which is GFL’s functional currency. Basis of consolidation Subsidiaries are entities controlled by the Company. Control exists when the Company has power over an entity, exposure or rights to variable returns from the Company’s involvement with the entity, and the ability to use its power over the entity to affect the amount of the Company’s returns. The financial accounts and results of subsidiaries are included in the Annual Financial Statements of the Company from the date that control commences until the date that control ceases. When necessary, adjustments are made to the financial statements of subsidiaries to bring their accounting policies into line with the Company’s accounting policies. All intercompany assets and liabilities, equity, income, expenses and cash flows relating to transactions between the Company and its subsidiaries are eliminated in full on consolidation. Property and equipment Property and equipment are stated at cost, less accumulated depreciation and impairment. Assets are depreciated to residual values over their estimated useful lives, with depreciation commencing when an asset is ready for use. Significant parts of property and equipment that have different depreciable lives are depreciated separately. Judgment is used in determining the appropriate level of componentization. Depreciation is computed on a straight-line basis, unless otherwise stated, using the following useful lives: Type of property and equipment Depreciation term Buildings and improvements 10 Landfills Units of production Vehicles 10 Machinery and equipment 3 Containers 5 Right-of-use assets Shorter of lease term or life of underlying asset(s) The costs of repair and maintenance activities are recognized in the consolidated statement of operations as incurred. Distinguishing major inspections and overhaul from repairs and maintenance in determining which costs are capitalized is a matter of management judgement. An item of property and equipment is de-recognized upon disposal or when no future economic benefits are expected to arise from the continued use of the asset. Any gain or loss arising on de-recognition of the asset (calculated as the difference between net disposal proceeds and the carrying amount of the asset) is included as a gain or loss in the consolidated statement of operations in the period the asset is de-recognized. Property and equipment are reviewed at the end of each reporting period to determine whether there is any indication of impairment. If the possibility of impairment is indicated, the Company will estimate the recoverable amount of the asset and record any impairment loss in the consolidated statement of operations. Assets under development are not depreciated until they are available for use. Landfill assets Landfill assets represent the cost of landfill airspace, including original acquisition cost and landfill construction and development costs, incurred during the operating life of the site. Landfill assets also include capitalized landfill closure and post-closure costs, net of accumulated amortization, and the cost of either new or landfill expansion permits. The original cost of landfill assets, together with incurred and projected landfill construction and development costs, is amortized on a per unit basis as landfill airspace is consumed. Landfill assets are amortized over their total available disposal capacity representing the sum of estimated permitted airspace capacity (having received the final permit from the governing authorities) plus future permitted airspace capacity, representing an estimate of airspace capacity that management believes is probable of being permitted based on the following criteria: ● Personnel are actively working to obtain the permit or permit modifications necessary for expansion of an existing landfill, and progress is being made on the project; ● It is probable that the required approvals will be received within the normal application and processing periods for approvals in the jurisdiction in which the landfill is located; ● The Company has a legal right to use or obtain land associated with the expansion plan; ● There are no significant known political, technical, legal or business restrictions or issues that could impair the success of the expansion effort; ● Management is committed to pursuing the expansion; and ● Additional airspace capacity and related costs have been estimated based on the conceptual design of the proposed expansion. The Company has been successful in receiving approvals for expansions pursued; however, there can be no assurance that the Company will be successful in obtaining approvals for landfill expansions in the future. Leasing arrangements Leases are recognized as a right-of-use asset and a corresponding liability at the date at which the leased asset is available for use by the Company. Assets and liabilities arising from a lease are initially measured on a present value basis. Lease liabilities include the net present value of the following lease payments: ● fixed payments (including in-substance fixed payments), less any lease incentives receivable; ● variable lease payments that are based on an index or a rate; ● amounts expected to be payable by the lessee under residual value guarantees; ● the exercise price of a purchase option if the lessee is reasonably certain to exercise that option; and ● payments of penalties for terminating the lease, if the lease term reflects the lessee exercising that option. As the interest rate implicit in GFL’s leases is typically not readily determinable, GFL utilizes its weighted average incremental borrowing rate to discount the lease payments. Right-of-use assets are measured at cost comprising the following: ● the amount of the initial measurement of lease liability; ● any lease payments made at or before the commencement date less any lease incentives received; ● any initial direct costs; and ● restoration costs. Intangible assets Intangible assets are stated at cost, less accumulated amortization and impairment, and consist of customer lists, municipal and other commercial contracts, non-compete agreements, and trade name, licenses and permits. The Certificate of Approval (“C of A”) licenses provide the Company with certain waste management rights in the province or state of issue and are considered to have an indefinite life and therefore are not subject to amortization, unless they relate to a leased facility in which case they are amortized over the lease term. Amortization is based on the estimated useful life using the following methods and rates: Type of intangible asset Amortization term Trade names, certificates of approval and other licenses Indefinite Customer lists and municipal contracts Straight-line 5 to 10 years Non-compete agreements Straight-line 5 years Intangible assets with indefinite useful lives are tested at least annually, at the cash-generating unit level for impairment. The assessment of indefinite life is reviewed annually to determine whether the indefinite life assessment continues to be supportable. If not, the change in the useful life assessment from indefinite to finite is made on a prospective basis. Intangible assets with finite lives are amortized over the useful economic life on a straight-line basis and assessed for impairment whenever there is an indication that the intangible asset may be impaired. Amortization expense is included as part of cost of sales. Goodwill Goodwill arising on an acquisition of a business represents the excess of the purchase price over the fair value of the net identifiable assets of the acquired business. Goodwill is carried at cost as established at the date of acquisition of the business less accumulated impairment losses, if any. For the purpose of impairment testing, goodwill acquired in a business combination is, from the acquisition date, allocated to cash-generating units ("CGU"), or groups of CGUs, based on the lowest level within the entity in which the goodwill is monitored for internal management purposes. The allocation is made to those CGUs that are expected to benefit from the business combination in which the goodwill arose. The Company tests its goodwill for impairment at the operating segment level. Any potential impairment of goodwill is identified by comparing the recoverable amount of a group of CGUs to its carrying value. Goodwill is reduced by the amount of deficiency, if any. If the deficiency exceeds the carrying amount of goodwill, the carrying values of the remaining assets in the CGUs are reduced by the excess on a pro-rata basis. The Company tests goodwill for impairment annually on December 31, or more frequently if there are indications of impairment. The recoverable amount of a CGU is the higher of the estimated fair value less costs of disposal or value-in-use of the CGU. In assessing value-in-use, the estimated future cash flows are discounted using a pre-tax discount rate that reflects current market assessments of the time value of money and the risks specific to the asset. Deferred financing costs Deferred financing costs in respect of the Company’s long-term debt are presented as a reduction of long-term debt and are recognized using the effective interest method over the term of the related financing agreement. Landfill closure and post-closure obligations The Company recognizes the estimated liability for an asset retirement obligation that results from acquisition, construction, development or normal operations in the year in which it is incurred. Costs associated with capping, closing and monitoring a landfill or portions thereof after it ceases to accept waste, are initially measured at the discounted future value of the estimated cash flows over the landfill’s operating life, representing the period over which the site receives waste. This value is capitalized as part of the cost of the related asset and amortized over the asset’s useful life. Estimates are reviewed at least once annually and consider, amongst other things, regulations that govern each site. The Company estimates the fair value of landfill closure and post-closure costs using present value techniques that consider and incorporate assumptions and considerations marketplace participants would use in the determination of those estimates, including inflation, markups, inherent uncertainties due to the timing of work performed, information obtained from third parties, quoted and actual prices paid for similar work and engineering estimates. Inflation assumptions are based on management’s evaluation of current and future economic conditions and the expected timing of these expenditures. Fair value estimates are discounted applying the risk-free rate, which is a rate that is essentially free of default risk. In determining the risk-free rate, consideration is given to both current and future economic conditions and the expected timing of expenditures. Revenue recognition The Company records revenue when control is transferred to the customer, generally at the time that the service is provided. Revenue is measured based on the consideration specified in a contract with a customer and excludes amounts collected on behalf of third parties. The Company recognizes revenue from the following major sources: Collection and disposal of solid waste The Company generates revenue through fees charged for the collection of solid waste including recyclables, from its municipal, residential and commercial and industrial customers. Revenues from these contracts are influenced by a variety of factors including collection frequency, type of service, type and volume or weight of waste and type of equipment and containers furnished to the customer. In addition to handling the Company’s own collected waste volumes, its transfer stations, material recovery facilities ("MRFs"), landfills and organic waste processing facilities generate revenue from tipping fees paid to the Company by municipalities and third-party haulers and waste generators and from the sale of recycled commodities. The Company also operates MRFs, transfer stations and landfills for municipal owners under a variety of compensation arrangements, including fixed fee arrangements or on a tonnage or other basis. Our municipal customer relationships are generally supported by contracts ranging from three three Certain future variable considerations of long-term customer contracts may be unknown upon entering into the contract, including the amount that will be billed in accordance with annual CPI, market costs for fuel and commodity prices. The amount to be billed is often tied to changes in an underlying base index such as a CPI or a fuel or commodity index, and revenue is recognized once the index is established for the future period. The Company does not disclose the value of unsatisfied performance obligations for these contracts as its 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. Collection and disposal of liquid waste The Company generates revenue through fees charged for the collection, management, transportation, processing and disposal of a wide variety of industrial and commercial liquid wastes. Revenue is primarily derived from fees charged to customers on a per service, volume and/or hour basis. Revenues from these contracts are influenced by a variety of factors including timing of contract, type of service, type and volume of liquid waste and type of equipment used. Revenue in the liquid waste business is also derived from the stewardship return incentives paid by most Canadian provinces in which the Company has liquid waste operations, as well as from the sale of used motor oil, solvents and downstream products to third parties. The fees received from third parties are based primarily on the market, type and volume of material sold. Generally, fees are billed and revenue is recognized at the time control is transferred. Revenue recognized under these agreements is variable in nature based on volumes and commodity prices at the time of sale, which are unknown at contract inception. Soil remediation and infrastructure contracts The Company earns revenue through fees collected for the excavation and transport of clean and contaminated soils and the remediation and disposal of contaminated and remediated soils. The Company also offers complementary civil, demolition, excavation and shoring services in its infrastructure business. In the soil remediation and infrastructure business, revenue is generated on a project basis, normally encompassing all of the above services. Fees charged for soil remediation and infrastructure contracts are determined based on the expected costs to complete each specific project. Revenue is recognized for these services based on the stage of completion of the contract, measured based on the expected remaining costs to complete the project. In cases where soil remediation services are sold outside of an infrastructure project, the fees for remediation and the related excavation operations are generated on a per tonne basis. Unbilled revenue Unbilled revenue occurs in certain situations, which vary by project. For example, amounts relating to contract assets are balances due from customers under construction contracts that arise when GFL receives payments from customers in relation with a series of performance related milestones. GFL will previously have recognized a contract asset for any work performed. Any amount previously recognized as a contract asset is reclassified to trade receivables at the point at which it is invoiced to the customer. Share based payments Stock options issued by the Company as remuneration of its key employees, officers, and directors are settled in subordinate voting shares and are accounted for as equity-settled awards. The fair value of options granted is measured using either the Black-Scholes option pricing model or the Monte Carlo simulation methods, which rely on estimates of the expected risk-free interest rate, expected dividend payments, expected share price volatility, value of the Company’s shares and the expected average life of the options. The Company believes these models adequately capture the substantive features of the option awards and are appropriate to calculate their fair values. The fair value of the options determined at grant date is expensed over the vesting period using an accelerated method of amortization, with a corresponding increase to contributed surplus. Expense related to share-based payments is included as part of selling, general and administrative expense. Upon exercise of options, the amount recognized in contributed surplus for the awards and the cash received upon exercise are recognized as an increase in share capital. GFL has a long-term incentive plan (“LTIP”) to grant long-term equity-based incentives, including options, performance stock units (“PSUs”), restricted stock units (“RSUs”), and deferred share units (“DSUs”) to eligible participants. Each award represents the right to receive subordinate voting shares, or in the case of PSUs and RSUs, subordinate voting shares and/or cash, in accordance with the terms of the LTIP. Each DSU represents a unit equivalent in value to a subordinate voting share based on the closing price of the subordinate voting shares on the day prior to the grant. The fair value of the RSUs and DSUs granted are based on the closing price of the subordinate voting shares on the day prior to the grant. The fair value of the RSUs and DSUs are recognized as compensation expense over the vesting period. As of December 31, 2020, there have been no PSUs issued. Income taxes Income tax expense or recovery is comprised of current and deferred income taxes. It is recognized in the consolidated statement of operations, except to the extent that the expense relates to items recognized directly in equity. A current or non-current tax liability/asset is the estimated tax payable/receivable on taxable earnings for the period, and any adjustments to taxes payable with respect to previous periods. The liability method is used to account for deferred tax assets and liabilities, which arise from temporary differences between the carrying amount of assets and liabilities recognized in the consolidated statement of financial position and their corresponding tax basis. The carry forward of unused tax losses and credits are recognized to the extent that it is probable they can be used in the future. The carrying amount of deferred income tax assets is reviewed at each financial position date and reduced to the extent it is no longer probable that the income tax asset will be recovered. Deferred tax assets and liabilities are calculated at the tax rates that are expected to apply when the asset or liability is recovered or settled. Current and deferred tax assets and liabilities are calculated using tax rates that have been enacted or substantively enacted at the end of the reporting date. Where current tax or deferred tax arises from the initial accounting for a business combination, the tax effect is included in the accounting for the business combination. Deferred tax liabilities are offset if a legally enforceable right exists to set off current income tax assets against current income tax liabilities and the deferred tax relates to the same taxable entity and the same taxation authority. Financial instruments Classification and measurement All financial assets and liabilities are recognized initially at fair value plus or minus transaction costs, except for financial instruments at fair value through profit or loss ("FVTPL"), for which transaction costs are expensed. Debt financial instruments are subsequently measured at FVTPL, fair value through other comprehensive income ("FVTOCI"), or amortized cost using the effective interest rate method. The Company determines the classification of its financial assets based on the Company’s business model for managing the financial assets and whether the instruments’ contractual cash flows represent solely payments of principal and interest on the principal amount outstanding. The Company’s derivatives designated as a hedging instrument in a qualifying hedge relationship are subsequently measured at FVTOCI. Equity instruments that meet the definition of a financial asset, if any, are subsequently measured at FVTPL or elected irrevocably to be classified at FVTOCI at initial recognition. Derivatives not designated in a qualified hedge relationship are measured at FVTPL. Financial liabilities are subsequently measured at amortized cost using the effective interest method or at FVTPL in certain circumstances or when the financial liability is designated as such. For financial liabilities that are designated as FVTPL, the amount of change in the fair value of the financial liability that is attributable to changes in the Company’s own credit risk of that liability is recognized in other comprehensive income or loss unless the recognition of the effects of changes in the liability’s credit risk in other comprehensive income or loss would create or enlarge an accounting mismatch in the consolidated statement of operations. The remaining amount of change in the fair value of the liability is recognized in the consolidated statement of operations. Changes in fair value of a financial liability attributable to the Company’s own credit risk that are recognized in other comprehensive income or loss are not subsequently reclassified to the consolidated statement of operations; instead, they are transferred to retained earnings, upon de-recognition of the financial liability. All of the Company’s financial assets are categorized within the amortized cost measurement category. All of the Company’s financial liabilities, with the exception of deferred foreign exchange derivatives and the TEU Purchase Contracts, are also categorized within the amortized cost measurement category. Deferred foreign exchange derivatives, which qualify for hedge accounting, are categorized within the FVTOCI category and the TEU Purchase Contracts (as defined below), which is a financial liability with embedded derivative features, is categorized within the FVTPL category. Impairment The Company uses a forward-looking Expected Credit Loss ("ECL") model to determine impairment of financial assets. ECLs are based on the difference between the contractual cash flows due in accordance with the contract and all the cash flows that the Company expects to receive. For trade receivables and holdbacks, the Company applies the simplified approach and has determined the allowance based on lifetime ECLs at each reporting date. The Company has established a provision that is based on the Company’s historical credit loss experience, adjusted for forward-looking factors specific to the customers and the economic environment. Hedge accounting The Company is exposed to the risk of currency fluctuations and has entered into currency derivative contracts and is exposed to the risk of fuel price fluctuations and has entered into fuel derivative contracts to hedge a portion of this exposure on the basis of planned transactions. Where hedge accounting is applied, the criteria are documented at the inception of the hedge and updated at each reporting date. The Company documents the relationship between hedging instruments and hedged items, as well as its risk management objectives and strategy for undertaking the hedging transactions. The Company also documents its assessment, at hedge inception and on an ongoing basis, of whether the derivatives that are used in hedging transactions are highly effective in offsetting changes in cash flows of hedged items. Basis of fair values Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The fair value measurement is based on the presumption that the transaction to sell the asset or transfer the liability takes place either: ● In the principal market for the asset or liability, or ● In the absence of a principal market, in the most advantageous market for the asset or liability. The Company uses valuation techniques that it believes are appropriate in the circumstances and for which sufficient data are available to measure fair value, maximizing the use of relevant observable inputs and minimizing the use of unobservable inputs. All assets and liabilities for which fair value is measured or disclosed in the Annual Financial Statements are categorized within the fair value hierarchy, described as follows, based on the lowest level input that is significant to the fair value measurement as a whole: Level 1 — quoted prices in active markets for identical assets or liabilities that the reporting entity has the ability to access at the measurement date. Level 2 — inputs other than quoted prices included within level 1 that are observable for the asset or liability, either directly or indirectly. Level 3 — are unobservable inputs for the asset or liability. Unobservable inputs are used to measure fair value to the extent that observable inputs are not available, thereby allowing for situations in which there is little, if any, market activity for the asset or liability at the measurement date. The fair values of certain of the Company’s financial instruments are determined using Level 1 and Level 2 fair value measurements. The Company does not have any Level 3 fair value measurements. In addition, there have been no significant transfers between levels. Business combinations Acquisitions of subsidiaries and businesses are accounted for using the acquisition method. The consideration for each acquisition is measured as the aggregate of the fair values of assets given, liabilities incurred or assumed, and the equity instruments issued by the Company in exchange for control of the acquired company or business. Acquisition-related costs are recognized in the consolidated statement of operations as incurred. Where the consideration for the acquisition includes any asset or liability resulting from a contingent consideration arrangement, it is measured at fair value at the acquisition date. Contingent consideration is remeasured at subsequent reporting dates at its fair value, and the resulting gain or losses recognized in the consolidated statement of operations. Critical accounting judgments and estimates The preparation of the Annual Financial Statements in conformity with IFRS requires management to make estimates, assumptions and judgments that affect the reported amounts of assets, liabilities, revenue, and expense for the period. Such estimates relate to unsettled transactions and events as of the date of the Annual Financial Statements. Accordingly, actual results may differ from estimated amounts as transactions are settled in the future. Estimates and assumptions are reviewed on an ongoing basis. Revisions to estimates are applied prospectively. The following areas are the critical judgments and estimates that management has made in applying the Company’s accounting policies and that have the most significant effect on amounts recognized in the Annual Financial Statements: ● Determining fair value of acquired assets and liabilities in business combinations ● Determining key assumptions for impairment testing ● Estimating the percentage of completion for certain revenue arrangements ● Estimating the expected credit losses related to trade and other receivables ● Forecasting future taxable income and the timing of reversal of temporary differences in connection with deferred income taxes ● Estimating the amount and timing of the landfill closure and post-closure obligations ● Estimating the useful lives of property and equipment and finite-life intangible assets ● Determining inputs into valuation models for equity-settled share-based payments ● Determining the mark-to-market valuation of the Purchase Contracts ● Determining the mark-to-market valuation of the hedging instruments Foreign currency translation Functional and presentation currency Items included in the financial statements of the Company’s subsidiaries are measured using the currency of the primary economic environment in which each entity operates (the functional currency). Foreign currency transactions are translated into Canadian dollars using the exchange rates prevailing at the date of the transactions or valuation when items are re-measured. Foreign exchange gains and losses resulting from the settlement of such transactions and from the changes at period-end exchange rates of monetary assets and liabilities denominated in foreign currencies are recognized in the consolidated statement of operations. Foreign operations The Company’s foreign operations are conducted through its subsidiaries located in the United States of America ("US subsidiaries"), whose functional currency is the United States dollar. The assets and liabilities of these US subsidiaries are translated into the presentation currency of the Company using the exchange rate at the reporting date. Revenues and expenses are translated at the average exchange rate for the period. The resulting foreign exchange translation differences are recorded as a currency translation adjustment in other comprehensive income or loss. Changes in Accounting Policies IFRS 9/IAS 39 and IFRS 7 Amendments, Interest rate benchmark reform The IASB issued amendments to IFRS 9, IAS 39 and IFRS 7 — Financial Instruments: Disclosures related to the first phase of interest rate benchmark reform. The amendments are effective for annual reporting periods beginning on or after January 1, 2020. GFL has assessed the impact of the amendments and concluded that they had no impact on the Annual Financial Statements. IFRS 3 Amendments, Definition of a business The IASB issued amendments to IFRS 3 — Business combinations to revise the definition of a business. The amendment

BUSINESS COMBINATIONS

BUSINESS COMBINATIONS	12 Months Ended
BUSINESS COMBINATIONS	Dec. 31, 2020
BUSINESS COMBINATIONS
BUSINESS COMBINATIONS	3. BUSINESS COMBINATIONS Year ended Year ended December 31, 2020 December 31, 2019 Net assets acquired Net working capital $ (63.5) $ 17.7 Right-of-use assets 23.4 47.2 Other long-term assets 0.5 — Property and equipment 1,483.4 258.1 Landfill 897.7 — Intangible assets Trade name, certificates of approval and other licenses 31.0 117.3 Customer lists and municipal contracts 449.2 131.8 Non-compete agreements 216.1 40.3 Goodwill 1,470.6 257.4 Assumption of lease obligations (23.4) (0.4) Other long-term liabilities (28.3) (47.2) Assumption of landfill closure and post-closure expenditures (262.6) (4.0) Deferred tax liabilities (123.4) (80.7) $ 4,070.7 $ 737.5 Consideration Accrued contingent consideration $ 23.1 $ 16.2 Share consideration issued 78.4 — Cash 3,969.2 721.3 $ 4,070.7 $ 737.5 For the year ended December 31, 2020, the acquisitions in the table above include the aggregate net assets acquired and consideration given for all acquisitions made during the period, which GFL considers to be individually immaterial. GFL acquired fifteen solid waste management businesses and seven liquid waste management businesses during the year ended December 31, 2020. The preliminary fair values of the aggregate identifiable assets acquired and liabilities assumed, and any goodwill recognized, as well as the purchase consideration transferred are presented above. Contingent consideration, if any, is contingent on the acquired business meeting certain earnings and performance targets by specified dates. In addition to the cash consideration noted above, during the year ended December 31, 2020, GFL paid $31.1 million in additional consideration related to acquisitions from prior years. As of December 31, 2020, GFL has not completed the purchase price allocation relating to 2020 acquisitions. Information to confirm the fair value of certain assets and liabilities of certain acquisitions remains outstanding. GFL expects to finalize these amounts no later than one year from the acquisition date. There may be differences between these provisional estimates and the final acquisition accounting. Approximately $346.3 million of the goodwill acquired is expected to be deductible for tax purposes. Since the transaction dates, revenue and net income before tax of $634.4 million and $33.9 million, respectively, attributable to the 2020 acquisitions are included in the Consolidated Statements of Operations and Comprehensive Loss. The net income before tax does not include $231.7 million of amortization related to the difference between the asset retirement obligation (“ARO”) calculated using the credit-adjusted, risk-free discount rate required for measurement of the ARO through purchase accounting, compared to the risk-free discount rate required for annual valuations. For the year ended December 31, 2019, the acquisitions in the table above include the aggregate net assets acquired and consideration given for all acquisitions made during the period, which GFL considers to be individually immaterial. GFL acquired nineteen solid waste management businesses, thirteen liquid waste management businesses and one infrastructure business during the year ended December 31, 2019. In addition to the cash consideration noted above, during the year ended December 31, 2019, GFL paid $8.6 million in additional consideration related to acquisitions completed during 2018. Approximately $4.2 million of goodwill related to the 2019 acquisitions is expected to be deductible for income tax purposes. Additional disclosures All acquisitions were accounted for as business combinations using the acquisition method with the results of operations consolidated with those of GFL from the date of acquisition. GFL’s growth strategy is to focus on generating organic growth from all of its operating segments. In addition to organic growth, GFL deploys an active acquisition strategy involving the integration of acquired businesses into each of its operating segments through integration of property and equipment, back office functions, improving route density and realignment of disposal alternatives to effect synergies and maximize profits. Goodwill arising from acquisitions is largely attributable to the assembled workforce of the acquisitions, the potential synergies with the acquiree, and intangible assets that do not qualify for separate recognition. The Company records cash in escrow on the statement of financial position when it expects previously transferred consideration to be returned on account of specified conditions of the business combination not being met. As at December 31, 2020, the Company has recorded nil of cash in escrow (nil at December 31, 2019). Contingent consideration is paid into an escrow account, where the release of funds is contingent on the acquired companies meeting certain earnings and performance targets by specified dates. The Company considers it probable that these targets will be met by these dates, and accordingly has accounted for these payments as consideration on the respective purchases. Pro forma results of operations (unaudited) If the 2020 acquisitions had occurred on January 1, 2020, the unaudited consolidated pro forma revenue and net loss before taxes for the year ended December 31, 2020 from GFL and the 2020 acquisitions would have been $5,116.6 million and $985.5 million, respectively. The pro forma results include depreciation expense of $231.7 million due to the difference between the ARO calculated using the credit-adjusted, risk-free discount rate required for measurement of the ARO through purchase accounting compared to the risk-free discount rate required for annual valuations. The pro forma results do not purport to be indicative of the results of operations which would have resulted had the acquisitions occurred at the beginning of the year, nor are they necessarily indicative of future operating results.

TRADE AND OTHER RECEIVABLES

TRADE AND OTHER RECEIVABLES	12 Months Ended
TRADE AND OTHER RECEIVABLES	Dec. 31, 2020
TRADE AND OTHER RECEIVABLES
TRADE AND OTHER RECEIVABLES	4. TRADE AND OTHER RECEIVABLES December 31, 2020 December 31, 2019 Trade $ 668.8 $ 542.4 Holdbacks 80.9 64.6 Unbilled revenue 129.7 113.9 Expected credit loss (12.1) (7.5) $ 867.3 $ 713.4 Trade receivables disclosed above include amounts that are past due at the end of the reporting period for which GFL has not recognized an expected credit loss as there has not been a significant change in credit quality and the amounts are still considered recoverable.

PREPAID EXPENSES AND INVENTORY

PREPAID EXPENSES AND INVENTORY	12 Months Ended
PREPAID EXPENSES AND INVENTORY	Dec. 31, 2020
PREPAID EXPENSES AND INVENTORY
PREPAID EXPENSES AND INVENTORY	5. PREPAID EXPENSES AND INVENTORY December 31, 2020 December 31, 2019 Prepaid expenses and other assets $ 76.3 $ 81.6 Vehicle parts, supplies and inventory 57.4 50.5 $ 133.7 $ 132.1 In conjunction with an acquisition on July 25, 2015, the Company had paid into escrow an amount of $10.0 million. The release of this amount is tied to the employment contracts of key management of the acquired company. As such, these amounts are recorded in prepaid expenses and other assets and are amortized over the employee retention period as defined by the share purchase agreement. During the year ended December 31, 2020, $2.0 million was recognized in the consolidated statement of operations in respect of this arrangement ($2.0 million during the year ended December 31, 2019, $1.0 million during the seven month period ended December 31, 2018, and $1.0 million during the five month period ended May 31, 2018). In the year ended December 31, 2020, GFL took a $14.2 million impairment charge, primarily including an $11.4 million write down of inventory and a $2.3 million write down to dispose of inventory. In the year ended December 31, 2020, GFL wrote off an additional $7.2 million of other assets in relation to funds expected to be received from the vendor of a business acquired in 2018. As at December 31, 2020, the entire balance was determined to not be recoverable and was expensed in the year.

PROPERTY AND EQUIPMENT

PROPERTY AND EQUIPMENT	12 Months Ended
PROPERTY AND EQUIPMENT	Dec. 31, 2020
PROPERTY AND EQUIPMENT
PROPERTY AND EQUIPMENT	6. PROPERTY AND EQUIPMENT Land, Machinery Assets building and and under Right-of- improvements Landfills Vehicles equipment development Containers use assets Total Cost Balance, December 31, 2018 $ 465.1 $ 681.8 $ 840.2 $ 338.8 $ 81.9 $ 168.3 $ — $ 2,576.1 IFRS 16 transition impact — — — — — — 103.8 103.8 Additions 68.4 81.3 120.7 85.2 134.0 47.0 26.7 563.3 Acquisitions via business combinations 77.9 4.0 72.5 91.1 — 12.6 47.2 305.3 Disposals (2.2) — (13.1) (1.7) — (12.9) (15.9) (45.8) Transfers 13.7 21.9 62.6 (6.5) (91.6) (0.1) — — Changes in foreign exchange (9.1) (23.1) (21.7) (6.0) (2.8) (7.9) (0.3) (70.9) Balance, December 31, 2019 613.8 765.9 1,061.2 500.9 121.5 207.0 161.5 3,431.8 Balance, December 31, 2019 613.8 765.9 1,061.2 500.9 121.5 207.0 161.5 3,431.8 Additions 73.2 92.6 164.8 119.2 21.3 43.5 40.7 555.3 Acquisitions via business combinations 560.0 897.7 455.0 291.3 5.0 172.1 23.4 2,404.5 Disposals (2.9) — (18.2) (10.7) — (3.8) (20.6) (56.2) Transfers 31.0 5.0 (0.3) 28.0 (63.5) (0.2) — — Changes in foreign exchange (28.8) (55.1) (31.1) (16.0) (1.0) (11.9) (1.5) (145.4) Balance, December 31, 2020 1,246.3 1,706.1 1,631.4 912.7 83.3 406.7 203.5 6,190.0 Accumulated depreciation Balance, December 31, 2018 6.6 36.8 53.6 30.3 — 12.4 — 139.7 Depreciation 20.8 126.9 164.5 80.5 — 49.4 23.2 465.3 Disposals (0.3) — (9.4) (0.7) — (5.7) (1.8) (17.9) Changes in foreign exchange (0.3) (1.5) (2.1) (0.5) — (0.9) (0.1) (5.4) Balance, December 31, 2019 26.8 162.2 206.6 109.6 — 55.2 21.3 581.7 Balance, December 31, 2019 26.8 162.2 206.6 109.6 — 55.2 21.3 581.7 Depreciation 32.6 111.9 224.7 122.6 — 49.3 37.8 578.9 Disposals (0.2) — (10.2) (2.2) — (3.1) (4.1) (19.8) Changes in foreign exchange (1.2) (8.4) (9.3) (3.1) — (2.8) (0.8) (25.6) Balance, December 31, 2020 58.0 265.7 411.8 226.9 — 98.6 54.2 1,115.2 Carrying amounts At December 31, 2019 $ 587.0 $ 603.7 $ 854.6 $ 391.3 $ 121.5 $ 151.8 $ 140.2 $ 2,850.1 At December 31, 2020 $ 1,188.3 $ 1,440.4 $ 1,219.6 $ 685.8 $ 83.3 $ 308.1 $ 149.3 $ 5,074.8 Total depreciation expense for the year ended December 31, 2020 was $810.6 million, which was comprised of $578.9 million depreciation shown above and $231.7 million depreciation expense due to the difference between the ARO calculated using the credit-adjusted, risk-free discount rate required for measurement of the ARO through purchase accounting, compared to the risk-free discount rate required for annual valuations (See Note 8). Depreciation expense for the year ended December 31, 2019, the seven months ended December 31, 2018, and the five months ended May 31, 2018, were $465.3 million, $178.2 million and $66.3 million, respectively (See Note 8). Depreciation of property and equipment expense included in cost of sales for the year ended December 31, 2020 was $785.1 million ($442.3 million for the year ended December 31, 2019, $172.1 million for the seven months ended December 31, 2018, and $63.1 million for the five months ended May 31, 2018). Depreciation of property and equipment expense included in selling, general and administrative expenses for the year ended December 31, 2020 was $25.5 million ($23.1 million for the year ended December 31, 2019, $6.1 million for the seven months ended December 31, 2018, and $3.2 million for the five months ended May 31, 2018).

GOODWILL AND INTANGIBLE ASSETS,

GOODWILL AND INTANGIBLE ASSETS, NET	12 Months Ended
GOODWILL AND INTANGIBLE ASSETS, NET	Dec. 31, 2020
GOODWILL AND INTANGIBLE ASSETS, NET
GOODWILL AND INTANGIBLE ASSETS, NET	7. GOODWILL AND INTANGIBLE ASSETS, NET Indefinite life intangible assets include C of A licenses that do not expire. GFL expects these assets to generate economic benefit in perpetuity. As such, GFL assessed these intangibles to have indefinite useful lives. December 31, 2020 December 31, 2019 Carrying amounts Indefinite life $ 641.4 $ 612.1 Definite life 2,452.0 2,235.9 $ 3,093.4 $ 2,848.0 The following table presents the changes in cost and accumulated amortization of GFL’s goodwill and intangible assets: Trade name, Customer lists C of A and municipal and other Non-compete Goodwill contracts licenses agreements Total Cost Balance, December 31, 2018 $ 4,979.3 $ 2,337.6 $ 580.0 $ 150.7 $ 8,047.6 Acquisitions via business combinations 257.4 131.8 117.3 40.3 546.8 Changes in foreign exchange (128.3) (43.3) (1.7) (3.2) (176.5) Goodwill adjustment 65.4 — — — 65.4 Balance, December 31, 2019 5,173.8 2,426.1 695.6 187.8 8,483.3 Balance, December 31, 2019 5,173.8 2,426.1 695.6 187.8 8,483.3 Acquisitions via business combinations 1,470.6 449.2 31.0 216.1 2,166.9 Changes in foreign exchange (144.0) (30.7) (3.4) (6.4) (184.5) Balance, December 31, 2020 6,500.4 2,844.6 723.2 397.5 10,465.7 Accumulated amortization Balance, December 31, 2018 — 114.1 — 13.9 128.0 Amortization — 295.0 4.8 34.3 334.1 Changes in foreign exchange — (0.5) — (0.1) (0.6) Balance, December 31, 2019 — 408.6 4.8 48.1 461.5 Balance, December 31, 2019 — 408.6 4.8 48.1 461.5 Amortization — 341.6 8.9 76.5 427.0 Changes in foreign exchange — (12.2) (0.8) (3.6) (16.6) Balance, December 31, 2020 — 738.0 12.9 121.0 871.9 Carrying amounts At December 31, 2019 $ 5,173.8 $ 2,017.5 $ 690.8 $ 139.7 $ 8,021.8 At December 31, 2020 $ 6,500.4 $ 2,106.6 $ 710.3 $ 276.5 $ 9,593.8 All amortization expense is included in cost of sales. GFL recorded a measurement period adjustment to adjust its previously reported purchase price allocations reported in the last quarter of the year ended December 31, 2019. This resulted in an increase in deferred income tax liabilities of $46.8 million, an increase in landfill closure and post-closure obligations of $5.9 million, a decrease in property and equipment of $4.5 million, an increase to accrued liabilities of $8.3 million, and an increase to goodwill of $65.4 million. In assessing goodwill and indefinite life intangible assets for impairment at December 31, 2020 and 2019, GFL compared the aggregate recoverable amount of the assets included in CGUs to their respective carrying amounts. For all CGUs, the recoverable amount was determined based on the value in use by discounting estimated future cash flows from a CGU to their present value using a pre-tax discount rate that reflects current market assessments of the time value of money and the risks specific to the asset. Estimated cash flow projections are based on the GFL’s one-year budget and three-year strategic plan. There was no impairment recorded at the CGU level as at December 31, 2020 and 2019. The key assumptions used for both periods in determining the recoverable amount for each CGU are as follows: ● Revenue growth rates – Growth rates ranging from 5.0% to 6.4% were used for the periods covered in the financial projections and are based on historical results and expectations for the forecasted periods. ● Pre-tax discount rates – Pre-tax discount rates represent the current market assessment of the risks specific to each CGU taking into consideration the time value of money and individual risks of the underlying assets that have not been incorporated in the cash flow estimates. The pre-tax discount rate calculation is based on the specific circumstances of the CGU and range from 5.6% to 7.5% . ● Terminal growth value – The cash flows beyond the initial period are extrapolated using a growth rate of 3.0% . Rates are based on market and industry trends researched and identified by management. ● Capital expenditures – The cash flow forecasts for capital expenditures are based on past experience and include the ongoing capital expenditures required to maintain the business and include cash outflows for the purchase of property and equipment. In all CGUs, reasonably possible changes to key assumptions would not cause the recoverable amount of each CGU to fall below the carrying value.

LANDFILL CLOSURE AND POST-CLOSU

LANDFILL CLOSURE AND POST-CLOSURE OBLIGATIONS	12 Months Ended
LANDFILL CLOSURE AND POST-CLOSURE OBLIGATIONS	Dec. 31, 2020
LANDFILL CLOSURE AND POST-CLOSURE OBLIGATIONS
LANDFILL CLOSURE AND POST-CLOSURE OBLIGATIONS	8. LANDFILL CLOSURE AND POST-CLOSURE OBLIGATIONS December 31, 2020 December 31, 2019 Balance, beginning of period $ 236.6 $ 162.8 Acquisitions via business combinations 262.6 4.0 Adjustment related to prior year acquisitions — 5.9 Provisions 266.0 78.7 Accretion 6.9 6.1 Expenditures (21.7) (15.3) Changes in foreign exchange (14.8) (5.6) Balance, end of period 735.6 236.6 Less: Current portion (55.3) (25.6) $ 680.3 $ 211.0 The present value of GFL’s future landfill closure and post-closure obligations have been estimated by management based on GFL’s cost, in today’s dollars, to settle closure and post-closure obligations at its landfills, projected timing of these expenditures and the application of discount and inflation rates. GFL used a risk-free discount rate of 1.21% in Canada and 1.65% in the United States as at December 31, 2020 (1.76% in Canada and 2.39% in the United States as at December 31, 2019) and an inflation rate of 1.60% in Canada and 1.74% in the United States (2.00% in Canada and 1.52% in the United States as at December 31, 2019) to calculate the present value of the landfill closure and post-closure obligations. Obligations acquired through business combinations are initially valued at fair value using a credit adjusted discount rate. Reducing the discount rate to the risk free rate resulted in a one-time increase to the liability of $231.7 million included in the provisions line item in the table above for the year ended December 31, 2020 ($nil for the year ended December 31, 2019). The landfill closure and post-closure obligation matures as follows: Less than 1 year $ 55.3 Between 1-2 years 38.0 Between 2-5 years 83.5 Over 5 years 558.8 $ 735.6 Funded landfill post-closure assets GFL is required to deposit monies into a social utility trust for the purpose of settling post closure costs at the landfills it owns in Quebec. The funding amount is established by the Quebec Government based on each cubic meter of waste accepted and payment is due quarterly. Additionally, GFL is required to deposit funds in a trust for the payment of post-closure obligations related to a municipal solid waste landfill located in Georgia. At December 31, 2020, included in other long-term assets are funded landfill post closure obligations, representing the fair value of legally restricted assets, totaling $19.3 million ($17.7 million as at December 31, 2019).

LONG-TERM DEBT

LONG-TERM DEBT	12 Months Ended
LONG-TERM DEBT	Dec. 31, 2020
LONG-TERM DEBT
LONG-TERM DEBT	9. LONG-TERM DEBT The Company’s long-term debt is comprised of the following: December 31, 2020 December 31, 2019 Revolving credit and swingline facility Revolving credit facility $ 148.8 $ — Term loan Term loan facility 1,671.6 3,351.2 Bonds 5.625% USD senior unsecured notes (“5.625% 2022 Notes”) (1) — 454.6 5.375% USD senior unsecured notes (“5.375% 2023 Notes”) (2) — 519.5 4.250% USD senior secured notes (“4.250% 2025 Secured Notes”) (3) 636.6 — 3.750% USD senior secured notes (“3.750%% 2025 Secured Notes”) (4) 954.9 — 7.000% USD senior unsecured notes (“7.000% 2026 Notes”) (5) — 876.7 5.125% USD senior secured notes (“5.125% 2026 Secured Notes”) (6) 636.6 649.4 8.500% USD senior unsecured notes, (“8.500% 2027 Notes”) (7) 458.4 779.3 4.000% senior unsecured notes, (“4.000% 2028 Notes”) (8) 636.6 — 3.500% USD senior secured notes (“3.500% 2028 Secured Notes”) (9) 954.9 — Paid in Kind notes 11.000% Paid in Kind notes (“PIK Notes”), semi-annual interest commencing December 1, 2018, principal maturing on May 31, 2028 — 1,008.0 Promissory notes — 27.5 Equipment loans and other At interest rates ranging from 3.02% to 4.37% 9.2 9.5 Subtotal 6,107.6 7,675.7 Fair value adjustment, discount and premium on bonds (5.4) (30.1) Net derivative instruments 122.3 31.1 Deferred finance costs (58.4) (51.6) Total long-term debt 6,166.1 7,625.1 Less: Current portion (4.6) (64.4) Total non-current long-term debt $ 6,161.5 $ 7,560.7 (1) The 5.625% 2022 Notes bear interest semi-annually which commenced May 12, 2017 with principal maturing on May 1, 2022. (2) The 5.375% 2023 Notes bear interest semi-annually which commenced September 1, 2018 with principal maturing on March 1, 2023. (3) The 4.250% 2025 Secured Notes bear interest semi-annually which commenced December 1, 2020 with the principal maturing on June 1, 2025. (4) The 3.750% 2025 Secured Notes bear interest semi-annually commencing February 1, 2021 with the principal maturing on August 1, 2025. (5) The 7.000% 2026 Notes bear interest semi-annually which commenced December 1, 2018 with principal maturing on June 1, 2026. (6) The 5.125% 2026 Secured Notes bear interest semi-annually which commenced on December 15, 2019 with principal maturing on December 15, 2026. (7) The 8.500% 2027 Notes bear interest semi-annually which commenced on May 1, 2019 with principal maturing on May 1, 2027. (8) The 4.000% 2028 Notes bear interest semi-annually commencing February 1, 2021 with principal maturing on August 1, 2028. (9) The 3.500% 2028 Secured Notes bear interest semi-annually commencing September 1, 2021 with principal maturing on September 1, 2028. Revolving credit and swingline facility GFL has a revolving credit and swingline facility (the “Revolving Credit Facility”) totaling $628.0 million and US$40.0 million of which $148.8 million was drawn as at December 31, 2020 ($nil as at December 31, 2019). On November 24, 2020, GFL entered into the Sixth Amended and Restated Credit Agreement (the "Revolving Credit Agreement") to, among other things, (a) reduce the applicable margin on existing borrowings by 50 basis points to 2.25% above Bankers Acceptance or Libor, based on GFL's Leverage Ratio as at December 31, 2020, (b) extend the maturity date to November 24, 2024, and (c) conform certain terms of the agreement to its other long term debt arrangements. The interest rate applied on amounts drawn under the Revolving Credit Agreement is the effective Bankers’ Acceptance/LIBOR rate or prime rate plus a spread. The spread is based on GFL’s ratio of Net Funded Debt to Adjusted EBITDA as of the end of the most recently completed fiscal quarter or fiscal year end, and can range between 0.75% to 2.75% per annum, depending on the mechanism used to draw the funds. The Revolving Credit Facility is secured by mortgages on certain properties, a general security agreement over all the assets of GFL and certain material subsidiaries and a pledge of shares of all subsidiaries. Under the Revolving Credit Facility, GFL must satisfy the following financial covenant: If the Revolving Credit Facility is more than 35% utilized, then GFL’s maximum Total Net Funded Debt to Adjusted EBITDA, each as defined in the Revolving Credit Facility, must be equal to or less than 8.00:1. As at December 31, 2020 and December 31, 2019, GFL was in compliance with this covenant. On March 5, 2020, GFL used a portion of the net proceeds of the IPO to repay $392.9 million of the Revolving Credit Facility. Term Loan Facility GFL has a Term Loan Facility (the “Term Loan Facility”) totaling US$1,312.9 million which matures on May 31, 2025, and bears interest at a rate of LIBOR plus 3.00% or US prime plus 2.00%. The Term Loan Facility is secured by mortgages on certain properties, a general security agreement over all the assets of GFL and certain material subsidiaries and a pledge of the shares of such subsidiaries. On March 5, 2020, GFL used a portion of the net proceeds of the IPO to repay US$523.0 million of the Term Loan Facility. On December 21, 2020, GFL used the net proceeds of the 3.500% 2028 Secured Notes issuance to repay US$744.3 million of the Term Loan Facility and completed the repricing of the balance of the Term Loan Facility, by reducing the LIBOR floor from 1.00% to 0.50%. Bonds 2020 Financings On March 5, 2020, GFL used a portion of the net proceeds of the IPO to fund the redemption of the following (i) the entire US$350.0 million outstanding aggregate principal amount of the 5.625% 2022 Notes, (ii) the entire US$400.0 million outstanding aggregate principal amount of the 5.375% 2023 Notes, (iii) US$270.0 million outstanding aggregate principal amount of the 7.000% 2026 Notes, (iv) US$240.0 million of the aggregate principal amount of the 8.500% 2027 Notes, and (v) related fees, premiums and accrued and unpaid interest on the 5.625% 2022 Notes, the 5.375% 2023 Notes, the 7.000% 2026 Notes and the 8.500% 2027 Notes. A loss on extinguishment of the bonds of $73.8 million and write off of deferred financing costs of $17.4 million was recognized in interest and other finance costs. On April 22, 2020, GFL issued the 4.250% 2025 Secured Notes. Concurrent with the issuance, GFL entered into debt derivatives to convert all related interest and principal payment obligations to Canadian dollars and convert the floating rate to a fixed rate until maturity. On August 24, 2020, GFL issued the 3.750% 2025 Secured Notes. On November 23, 2020, GFL issued the 4.000% 2028 Notes. Concurrent with the issuance, GFL entered into cross-currency swaps to manage its currency risk. GFL used the net proceeds of the issuance to fund the redemption of the entire US$405.0 million outstanding aggregate principal amount, related fees, premiums and accrued interest on the 7.000% 2026 Notes. A loss on extinguishment of the bond of $35.5 million and write off of deferred financing costs of $6.6 million was recognized in interest and other finance costs. At the same time, the associated debt derivatives were settled for net proceeds received of $6.9 million. On December 21, 2020, GFL issued the 3.500% 2028 Secured Notes. GFL used the net proceeds of the issuance to fund the redemption of US$744.3 million of the Term Loan Facility, related fees, premiums and accrued interest. On December 31, 2020, GFL terminated US$469.4 million of the original and the offset swap positions, resulting in a net payment of $31.9 million paid by GFL. The remaining US$30.6 million offset swap position was settled on February 1, 2021 with a final payment of $3.8 million, paid by GFL. In conjunction with the repayments of notes throughout the year, GFL incurred accelerated interest payments of $4.4 million ($nil for the year ended December 31, 2019, $nil for the seven month period ended December 31, 2018 and $nil for the five month period ended May 31, 2018) and loss on extinguishments of both bonds and PIK Notes of $168.7 million ($nil for the year ended December 31, 2019, $nil for the seven month period ended December 31, 2018, and $nil for the five month period ended May 31, 2018). 2019 Financings On April 17, 2019, GFL issued US$600.0 million 8.500% 2027 Notes. GFL used the proceeds of the offering to repay amounts outstanding under the Revolving Credit Facility. The balance of the proceeds was used for general corporate expenses including to fund future acquisitions. On December 16, 2019, GFL issued US$500.0 million 5.125% 2026 Secured Notes. GFL used the proceeds of the offering to fund acquisitions and repay amounts outstanding under the Revolving Credit Facility. The balance of the proceeds will be used for general corporate expenses including to fund future acquisitions. On December 16, 2019, GFL also issued an additional US$275.0 million in aggregate principal amount of 7.000% 2026 Notes under the indenture entered into in respect of the US$400.0 million in aggregate principal amount of the Company's existing 7.000% 2026 Notes due 2026. GFL used the proceeds of the 7.000% 2026 Notes to fund acquisitions and repay amounts outstanding under the Revolving Credit Facility. The balance of the proceeds will be used for general corporate expenses including to fund future acquisitions. Paid in Kind Notes On March 5, 2020, in connection with the pre-closing capital changes implemented as part of the IPO, certain existing shareholders of Holdings subscribed for additional non-voting shares at a fair market value price per share of US$19.00, the proceeds of which, together with a loan in an aggregate principal amount of $29.0 million from Sejosa Holdings Inc., an entity controlled by Patrick Dovigi, Founder, Chairman, President and Chief Executive Officer, were used to redeem in full the PIK Notes in an aggregate amount of $1,049.9 million plus redemption premiums and penalties. A loss on extinguishment of $59.4 million was recognized in interest and other finance costs. Letter of credit facility GFL has a combined committed letter of credit facility to a maximum of $240.0 million. At December 31, 2020, GFL had $133.8 million ($104.3 million as at December 31, 2019) outstanding against this facility which is not recognized in the Annual Financial Statements. Interest expense in connection with these letters of credit was $3.8 million for the year ended December 31, 2020 ($2.8 million for the year ended December 31, 2019, $0.6 million for the seven month period ended December 31, 2018, and $0.6 million for the five month period ended May 31, 2018). Changes in long-term debt arising from financing activities The opening and closing balances of long-term debt are reconciled as follows: December 31, 2020 December 31, 2019 Balance, beginning of period $ 7,625.1 $ 6,288.7 Cash flows Issuance of long-term debt 4,667.9 3,143.8 Repayment of long-term debt (6,200.3) (1,569.9) Payment of financing costs (41.0) (20.7) Non-cash changes Reclassification of finance leases — (64.4) PIK note exchanged for common shares — (61.1) Assumed via business combinations — 0.4 Accrued interest and other non-cash changes 125.6 153.4 Revaluation of foreign exchange (129.7) (160.9) Fair value movements on cash flow hedges 118.5 (84.2) Balance, end of period $ 6,166.1 $ 7,625.1 Commitments related to long-term debt Principal future payments on long term debt in each of the next five years are as follows: Long-term debt 2021 $ 4.6 2022 0.5 2023 0.2 2024 3.7 2025 1,591.5 Thereafter 4,507.1 $ 6,107.6

INTEREST AND OTHER FINANCING CO

INTEREST AND OTHER FINANCING COSTS	12 Months Ended
INTEREST AND OTHER FINANCING COSTS	Dec. 31, 2020
INTEREST AND OTHER FINANCING COSTS
INTEREST AND OTHER FINANCING COSTS	10. INTEREST AND OTHER FINANCING COSTS GFL’s interest and other financing costs are comprised of the following: Successor Predecessor December 31, December 31, December 31, May 31, 2018 2020 2019 2018 (214 days) (151 days) Interest $ 372.4 $ 472.7 $ 149.5 $ 85.1 Loss on extinguishment of debt 168.7 — — — Amortization of deferred financing costs 36.1 9.7 23.3 4.1 Accretion of landfill closure and post-closure obligations 6.9 6.1 1.2 1.3 Other financing costs 13.5 43.7 68.2 36.9 Interest and other finance costs $ 597.6 $ 532.2 $ 242.2 $ 127.4

LEASE OBLIGATIONS

LEASE OBLIGATIONS	12 Months Ended
LEASE OBLIGATIONS	Dec. 31, 2020
LEASE OBLIGATIONS
LEASE OBLIGATIONS	11. LEASE OBLIGATIONS GFL leases several assets including buildings, plants and equipment. The average lease term is five years. GFL has options to purchase certain equipment for a nominal amount at the end of the lease term. GFL’s obligations are secured by the lessors’ title to the leased assets for such leases. Future minimum payments under lease obligations are as follows: December 31, 2020 December 31, 2019 Lease obligations $ 241.0 $ 246.4 Less: Interest 49.8 54.3 191.2 192.1 Less: Current portion 37.5 33.2 $ 153.7 $ 158.9 Lease obligations include $73.1 million of secured lease obligations as at December 31, 2020 ($58.7 million as at December 31, 2019). Interest expense in connection with lease obligations was $10.9 million for the year ended December 31, 2020 ($10.5 million for the year ended December 31, 2019, and $0.5 million for the seven month period ended December 31, 2018, and $0.3 million for the five month period ended May 31, 2018). Leases are secured by the related asset. Principal and interest payments on future minimum lease payments under the lease obligations in each of the next five years are as follows: Lease liabilities 2021 $ 39.8 2022 65.1 2023 28.2 2024 19.5 2025 26.5 Thereafter 61.9 $ 241.0

TANGIBLE EQUITY UNITS

TANGIBLE EQUITY UNITS	12 Months Ended
TANGIBLE EQUITY UNITS	Dec. 31, 2020
TANGIBLE EQUITY UNITS
TANGIBLE EQUITY UNITS	12. TANGIBLE EQUITY UNITS On March 5, 2020, GFL completed its offering of 15,500,000 6.00% TEUs for total gross proceeds of $1,040.7 million (US$775.0 million). Each TEU, which has a stated amount of US$50.00, is comprised of a prepaid stock purchase contract (“Purchase Contract(s)”) and a senior amortizing note (“Amortizing Note(s)”) due March 15, 2023, both of which are freestanding instruments and separate units of account. The Amortizing Notes are classified as a financial liability held at amortized cost. The Purchase Contracts are accounted for as prepaid forward contracts to deliver a variable number of equity instruments equal to a fixed dollar amount, subject to a cap and floor. Accordingly, the Purchase Contracts meet the definition of a financial liability with embedded derivative features, which GFL has elected to measure at fair value through profit or loss. GFL allocated the proceeds from the issuance of the TEUs to notes and other derivative financial liabilities based on the relative fair values of the respective components of each TEU. The value allocated to the Amortizing Notes is reflected with issuance costs as a reduction of the face amount of the notes. The issuance costs are accreted to the face amount of the notes using the effective interest method. The value allocated to the Purchase Contracts is subsequently measured at fair value through profit or loss. The fair value of the Purchase Contracts of the TEUs is based on the trading price of the Purchase Contracts to the extent an active market exists, otherwise a valuation model is used. The fair value of the Purchase Contracts was estimated using a Monte-Carlo simulation to simulate GFL’s stock price using inputs such as USD risk-free interest rate curve, GFL’s spot stock price in USD on the New York Stock Exchange, dividend forecasts, volatility of GFL’s stock, and credit spread. This resulted in an unrealized loss of $449.2 million on the market value of the Purchase Contracts for the year ended December 31, 2020 ($nil for the year ended December 31, 2019, $nil for the seven month period ended December 31, 2018, and $nil for the five month period ended May 31, 2018). The aggregate values assigned upon issuance of the TEUs, based on the relative fair values of the respective components of each TEU, were as follows: Purchase Contracts Amortizing Notes Total Fair value price per TEU on issuance $ 55.71 $ 11.43 $ 67.14 Gross proceeds 863.5 177.2 1,040.7 Issuance costs (28.1) (5.7) (33.8) Net proceeds on issuance $ 835.4 $ 171.5 $ 1,006.9 Each Amortizing Note has an initial principal amount of US$8.5143 and bears interest at 4.000% per year. On each of March 15, June 15, September 15, and December 15, GFL will pay equal quarterly cash instalments of US$0.7500 per Amortizing Note (except for the June 15, 2020 installment payment, which was US$0.8333 per Amortizing Note), which cash payment in the aggregate will be the equivalent of 6.000% per year with respect to each US$50.00 stated amount of the TEUs. Each instalment constitutes a payment of interest and a partial payment of principal. Unless settled earlier, on March 15, 2023, each Purchase Contract will automatically settle for subordinate voting shares. Upon settlement of a Purchase Contract, GFL will deliver not more than 2.6316 subordinate voting shares and not less than 2.1930 subordinate voting shares, subject to adjustment, based on the Applicable Market Value of GFL’s subordinate voting shares as described below: ● If the Applicable Market Value is greater than the threshold appreciation price, which is US$ 22.80 , holders will receive 2.1930 subordinate voting shares per Purchase Contract; ● If the Applicable Market Value is less than or equal to the threshold appreciation price but greater than or equal to the reference price, which is US$ 19.00 , the holder will receive a number of subordinate voting shares per Purchase Contract equal to US$ 50.00 , divided by the Applicable Market Value; and ● If the Applicable Market Value is less than the reference price, the holder will receive 2.6316 subordinate voting shares per Purchase Contract. The Applicable Market Value is defined as the arithmetic average of the volume weighted average price per share of GFL’s subordinate voting shares over the twenty consecutive trading day period immediately preceding March 15, 2023. The TEUs are comprised of the following: December 31, 2020 December 31, 2019 Amortizing Notes $ 123.4 $ — Purchase Contracts 1,263.7 — 1,387.1 — Less: Current portion of Amortizing Notes (59.2) — $ 1,327.9 $ — The 33,991,500 minimum shares to be issued are included in the calculation of basic net loss per share. The TEUs have a potentially dilutive effect on the calculation of net income per share. The difference between the minimum subordinate voting shares and the maximum subordinate voting shares are dilutive securities, and accordingly, are included in GFL’s diluted net loss per share on a pro-rata basis to the extent the Applicable Market Value is higher than US$22.80 but is less than US$19.00 at period end. See note 14 for additional information regarding the calculation of net loss per share. Principal future payments on the Amortizing Notes are as follows: Amortizing Notes 2021 $ 59.2 2022 59.2 2023 14.8 $ 133.2

INCOME TAXES

INCOME TAXES	12 Months Ended
INCOME TAXES	Dec. 31, 2020
INCOME TAXES
INCOME TAXES	13. INCOME TAXES The effective income tax rates differ from the amount that would be computed by applying the combined federal and provincial statutory income tax rates to loss before income taxes. The reconciliation is as follows: Successor Predecessor December 31, December 31, December 31, May 31, 2018 2020 2019 2018 (214 days) (151 days) Loss before income taxes $ (1,355.8) $ (609.2) $ (432.7) $ (191.6) Income tax recovery at the combined basic federal and provincial tax rate (26.5% in 2020; 26.5% in 2019; and 26.5% in 2018) (359.3) (161.4) (114.7) (50.8) Decrease (increase) resulting from: Permanent differences 12.5 8.8 5.3 3.7 Variance between combined Canadian tax rate and the tax rate applicable to U.S. earnings (1.3) 1.9 1.3 0.9 (Recognition) non-recognition of deferred tax assets (11.1) (6.5) (1.6) 11.9 Other (1.7) (0.3) (4.3) 7.3 Income tax recovery $ (360.9) $ (157.5) $ (114.0) $ (26.9) Deferred income taxes Deferred income taxes represent the net tax effect of non-capital tax losses and temporary differences between the consolidated financial statement carrying amounts and the tax basis of assets and liabilities. The changes in the periods in the components of the Company’s deferred tax assets and liabilities are as follows: Balance, Acquisitions Recognized in Balance, December 31, via business Foreign Recognized in Recognized in other December 2019 combinations exchange equity net loss comprehensive loss 31, 2020 Deferred tax assets Non-capital loss carry forwards $ 216.3 $ 68.4 $ (1.5) $ — $ 143.6 $ — $ 426.8 Landfill closures and post-closure obligations 55.0 64.2 (0.7) — 61.4 — 179.9 Accrued liabilities 2.5 6.1 — — 1.5 — 10.1 Other 50.8 — (0.4) 22.3 33.3 — 106.0 324.6 138.7 (2.6) 22.3 239.8 — 722.8 Deferred tax liabilities Property and equipment 383.4 212.1 (2.2) — 77.9 — 671.2 Intangible assets 663.4 41.1 (4.2) — (84.6) — 615.7 Cash flow hedges 14.9 — — — — (5.1) 9.8 Other (3.3) 8.9 2.2 — (115.7) — (107.9) 1,058.4 262.1 (4.2) — (122.4) (5.1) 1,188.8 Net deferred income tax liabilities $ 733.8 $ 123.4 $ (1.6) $ (22.3) $ (362.2) $ (5.1) $ 466.0 Acquisitions via business combinations includes $2.7 As at December 31, 2020, the Company had income tax losses of approximately $1,754.0 million ($908.2 million as at December 31, 2019) available to carry forward to reduce future years’ taxable income. If not utilized, these losses will begin to expire in 2024 and fully expire in 2040. Balance, Acquisitions Recognized in Balance, December 31, via business Foreign Recognized other December 31, 2018 combinations (1) exchange in net loss comprehensive loss 2019 Deferred tax assets Non-capital loss carry forwards $ 142.1 $ (12.3) $ (4.4) $ 90.9 $ — $ 216.3 Landfill closures and post-closure obligations 40.0 2.2 (1.3) 14.1 — 55.0 Accrued liabilities 5.4 (0.1) (0.3) (2.5) — 2.5 Other 28.0 14.5 (2.0) 10.3 — 50.8 215.5 4.3 (8.0) 112.8 — 324.6 Less: Non-recognition of deferred tax assets (20.3) — (0.3) 20.6 — — 195.2 4.3 (8.3) 133.4 — 324.6 Deferred tax liabilities Property and equipment 309.0 50.8 (11.8) 35.4 — 383.4 Intangible assets 664.5 81.0 (11.7) (70.4) — 663.4 Cash flow hedges (7.5) — — (0.1) 22.5 14.9 Other (11.7) — 0.5 7.9 — (3.3) 954.3 131.8 (23.0) (27.2) 22.5 1,058.4 Net deferred income tax liabilities $ 759.1 $ 127.5 $ (14.7) $ (160.6) $ 22.5 $ 733.8 (1) Acquisitions via business combinations includes $46.8 million of measurement period adjustments to adjust previously reported purchase price allocations completed during 2018.

LOSS PER SHARE

LOSS PER SHARE	12 Months Ended
LOSS PER SHARE	Dec. 31, 2020
LOSS PER SHARE
LOSS PER SHARE	14. LOSS PER SHARE Basic loss per share amounts are calculated by dividing net loss for the period attributable to equity holders by the weighted average number of shares outstanding during the period. Diluted loss per share amounts are calculated by dividing the net loss attributable to equity and TEU holders by the weighted average number of shares outstanding during the period plus the weighted average number of shares, if any, that would be issued on exercise of stock options, to the extent that they are considered dilutive. Successor Predecessor December 31, December 31, December 31, May 31, 2018 2020 2019 2018 (214 days) (151 days) Net loss $ (994.9) $ (451.7) $ (318.7) $ (164.7) Less amounts attributable to preferred shareholders 13.7 — — — Adjusted net loss $ (1,008.6) $ (451.7) $ (318.7) $ (164.7) Weighted average shares outstanding (1),(2) 360,383,291 180,545,277 149,028,989 571,497,668 Weighted average number of shares on exercise of stock options, conversion of TEUs, and conversion of preferred shares — — — — Diluted weighted average number of shares outstanding 360,383,291 180,545,277 149,028,989 571,497,668 Loss per share Basic and Diluted $ (2.80) $ (2.50) $ (2.14) $ (0.29) (1) Weighted average shares at December 31, 2020 includes the 33,991,500 minimum subordinate voting share conversion of the TEUs. (2) Weighted average shares at December 31, 2019 and December 31, 2018 adjusted for share split completed in conjunction with the pre-capital closing changes implemented as part of the IPO. Diluted Net loss per share excludes the effects of time-based and performance-based share options, RSUs, TEUs and Preferred Shares that are anti-dilutive.

SALES AND OPERATING REVENUE

SALES AND OPERATING REVENUE	12 Months Ended
SALES AND OPERATING REVENUE	Dec. 31, 2020
SALES AND OPERATING REVENUE
SALES AND OPERATING REVENUE	15. SALES AND OPERATING REVENUE The following table presents GFL’s revenue disaggregated by service type and segment. Successor Predecessor December 31, December 31, December 31, 2018 May 31, 2018 2020 2019 (1) (214 days) (2) (151 days) (3) Residential $ 1,067.8 $ 815.3 $ 272.1 $ 135.4 Commercial/industrial 1,350.1 1,106.9 340.1 173.2 Total collection 2,417.9 1,922.2 612.2 308.6 Landfill 348.4 255.5 77.8 37.2 Transfer 426.7 337.2 98.2 56.4 Material recovery 263.3 95.5 28.2 18.2 Other 226.6 172.0 83.1 40.1 Solid waste 3,682.9 2,782.4 899.5 460.5 Infrastructure and soil remediation 535.1 538.3 260.7 135.1 Liquid waste 455.8 385.2 168.3 88.7 Intercompany revenue (477.6) (359.0) (103.7) (56.5) Revenue $ 4,196.2 $ 3,346.9 $ 1,224.8 $ 627.8 Refer to Note 2 for additional details on the reclassifications outlined below: (1) Includes reclassification to increase Intercompany revenue by $45.9 million and decrease Infrastructure and soil remediation revenue by $2.1 million. This resulted in increases in revenue of $20.8 million in Landfill, $25.7 million in Transfer, $1.2 million in Material recovery and $0.3 million in Commercial. There was no change in total revenue. (2) Includes reclassification to decrease revenues of $35.7 million from Material recovery, $ 1.8 million from Liquid waste and $ 0.1 million from Infrastructure and soil remediation. This resulted in increases in revenue of $ 36.7 million in Other and $ 1.0 million in Landfill. There was no change in total revenue. (3) Includes reclassification to decrease revenues of $ 21.4 million in Material recovery. This resulted in increases in revenue of $20.5 million in Other, $0.7 million in Liquid waste and $0.2 million in Landfill. There was no change in total revenue.

SEGMENT REPORTING

SEGMENT REPORTING	12 Months Ended
SEGMENT REPORTING	Dec. 31, 2020
SEGMENT REPORTING
SEGMENT REPORTING	16. SEGMENT REPORTING GFL’s main lines of business are the transporting, managing, and recycling of solid and liquid waste and infrastructure and soil remediation services. GFL is divided into operating segments corresponding to the following lines of business: Solid waste, which includes hauling, landfill, transfer and material recovery facilities; Infrastructure and soil remediation; and Liquid waste. Inter-segment transfers are made at market prices. The operating segments are presented in accordance with the same criteria used for the internal report prepared for the chief operating decision-maker who is responsible for allocating the resources and assessing the performance of the operating segments. The CODM assesses the performance of the segments on several factors, including gross revenue, intercompany revenue, revenue, and adjusted EBITDA. GFL’s chief operating decision-maker is the Chief Executive Officer. The Solid waste segment follows a national internal reporting structure, and each country is considered a separate operating segment by the chief operating decision-maker. The following is an analysis of GFL’s revenue and results from continuing operations by reportable segment. “Adjusted EBITDA” represents GFL’s earnings before taxes, interest and other finance costs, depreciation and amortization, loss (gain) on foreign exchange, loss (gain) on sale of property and equipment, mark-to-market loss (gain) on fuel hedge, mark-to-market loss (gain) on Purchase Contracts, share-based payments, acquisition, integration and other costs (included in selling, general and administrative expenses related to acquisition activity), costs associated with the IPO, acquisition, rebranding and other integration costs (included in cost of sales related to acquisition activity), and deferred purchase consideration. The definition of Adjusted EBITDA has been amended from the prior year. Gross revenue is calculated based on revenue before intercompany revenue eliminations. Year ended December 31, 2020 Gross Intercompany Adjusted Successor Revenue Revenue Revenue EBITDA Solid waste Canada $ 1,417.8 $ (187.0) $ 1,230.8 $ 338.6 USA 2,262.0 (236.2) 2,025.8 639.2 Solid waste 3,679.8 (423.2) 3,256.6 977.8 Infrastructure and soil remediation 538.2 (10.9) 527.3 91.6 Liquid waste 455.8 (43.5) 412.3 97.5 Corporate — — — (90.2) $ 4,673.8 $ (477.6) $ 4,196.2 $ 1,076.7 Year ended December 31, 2019 Gross Intercompany Adjusted Successor Revenue Revenue Revenue (1) EBITDA (2) Solid waste Canada $ 1,174.8 $ (161.1) $ 1,013.7 $ 267.7 USA 1,603.4 (155.8) 1,447.6 431.0 Solid waste 2,778.2 (316.9) 2,461.3 698.7 Infrastructure and soil remediation 541.0 (6.0) 535.0 103.7 Liquid waste 386.7 (36.1) 350.6 79.5 Corporate — — — (56.2) $ 3,705.9 $ (359.0) $ 3,346.9 $ 825.7 Refer to Note 2 for additional details on the reclassifications outlined below: (1) Includes reclassification of $ 1.7 million from Liquid waste into Solid waste - Canada. (2) Includes reclassification of $ 3.8 million from Liquid waste and $24.1 million from Corporate into Solid waste Canada in the amount of $1.5 million and Solid waste USA in the amount of $26.4 million. Period ended December 31, 2018 (214 days) Gross Intercompany Adjusted Successor Revenue Revenue Revenue (1) EBITDA (2) Solid waste Canada $ 595.5 $ (75.3) $ 520.2 $ 142.6 USA 302.0 (8.5) 293.5 63.6 Solid waste 897.5 (83.8) 813.7 206.2 Infrastructure and soil remediation 262.7 (4.0) 258.7 56.4 Liquid waste 168.3 (15.9) 152.4 38.3 Corporate — — — (18.9) $ 1,328.5 $ (103.7) $ 1,224.8 $ 282.0 Refer to Note 2 for additional details on the reclassifications outlined below: (1) Includes reclassification of $ 0.6 million from Solid waste Canada into Liquid waste. (2) Includes reclassification of $ 4.9 million from Corporate to Solid waste USA and $ 0.5 million from Solid waste Canada to Liquid waste. Period ended May 31, 2018 (151 days) Gross Intercompany Adjusted Predecessor Revenue Revenue Revenue (1) EBITDA (2) Solid waste Canada $ 362.5 $ (40.3) $ 322.2 $ 80.1 USA 97.0 (3.1) 93.9 17.3 Solid waste 459.5 (43.4) 416.1 97.4 Infrastructure and soil remediation 136.2 (2.8) 133.4 23.4 Liquid waste 88.6 (10.3) 78.3 15.8 Corporate — — — (9.3) $ 684.3 $ (56.5) $ 627.8 $ 127.3 Refer to Note 2 for additional details on the reclassifications outlined below: (1) Includes reclassification of $ 0.6 million from Solid waste Canada into Liquid waste. (2) Includes reclassification of $0.6 million from Solid waste Canada into Liquid waste. Adjusted EBITDA reconciles to net loss for the periods presented as follows: Successor Predecessor December 31, December 31, December 31, May 31, 2018 2020 2019 2018 (214 days) (151 days) Total segment adjusted EBITDA $ 1,076.7 $ 825.7 $ 282.0 $ 127.3 Less: Depreciation and amortization 810.6 465.3 178.2 66.3 Amortization of intangible assets 427.0 334.1 127.5 40.9 Interest and other finance costs 597.6 532.2 242.2 127.4 (Gain) loss on foreign exchange (37.3) (48.9) 39.6 16.6 Loss (gain) on sale of property and equipment 4.6 1.2 4.7 (0.1) Mark-to-market loss on fuel hedges 1.8 1.0 2.8 — Mark-to-market loss on Purchase Contracts 449.2 — — — Share-based payments 37.9 14.5 2.0 18.8 Impairment 21.4 — — — Transaction costs 60.1 65.5 103.7 42.4 IPO transaction costs 46.2 — — — Other income — — — (3.2) Acquisition, rebranding and other integration costs 11.4 36.4 13.0 8.8 Unbilled revenue reversal — 31.6 — — Deferred purchase consideration 2.0 2.0 1.0 1.0 Income tax recovery (360.9) (157.5) (114.0) (26.9) Net loss $ (994.9) $ (451.7) $ (318.7) $ (164.7) As we continue to grow our business, we may be faced with new events or circumstances that are not indicative of our underlying business performance or that impact the ability to assess our operating performance. The definition of Adjusted EBITDA for the three months and year ended December 31, 2020 removes the impact of the mark-to-market loss on Purchase Contracts, IPO transaction costs and impairment and other charges, all of which did not exist in the prior periods. Geographical information Revenues from external customers and non-current assets, excluding deferred tax assets, can be analyzed according to the following geographic areas: Successor Predecessor Successor Non-current Revenue assets December 31, December 31, December 31, May 31, 2018 December 31, 2020 2019 2018 (214 days) (151 days) 2020 Canada $ 1,996.1 $ 1,760.8 $ 931.3 $ 533.9 $ 4,917.2 USA 2,200.1 1,586.1 293.5 $ 93.9 9,784.6 $ 4,196.2 $ 3,346.9 $ 1,224.8 $ 627.8 $ 14,701.8 Goodwill and indefinite life intangible assets by operating segment The carrying amount of goodwill and indefinite life intangible assets allocated to the operating segments for impairment testing purposes is as follows: December 31, 2020 December 31, 2019 Solid waste Canada $ 1,734.4 $ 1,707.6 USA 4,738.0 3,383.0 Infrastructure and soil remediation 240.0 237.8 Liquid waste 429.4 457.5 $ 7,141.8 $ 5,785.9

SHAREHOLDER'S CAPITAL

SHAREHOLDER'S CAPITAL	12 Months Ended
SHAREHOLDER'S CAPITAL	Dec. 31, 2020
SHAREHOLDER'S CAPITAL
SHAREHOLDER'S CAPITAL	17. SHAREHOLDER’S CAPITAL a) Authorized capital GFL’s authorized share capital consists of (i) an unlimited number of subordinate voting shares, (ii) an unlimited number of multiple voting shares, and (iii) an unlimited number of preferred shares. Subordinate and multiple voting shares The rights of the holders of the subordinate voting shares and the multiple voting shares are substantially identical, except for voting and conversion. The holders of outstanding subordinate voting shares are entitled to one vote per subordinate voting share and the holders of multiple voting shares are entitled to ten votes per multiple voting share. The subordinate voting shares are not convertible into any other classes of shares. Each outstanding multiple voting share may at any time, at the option of the holder, be converted into one subordinate voting share. In addition, all multiple voting shares will convert automatically into subordinate voting shares at such time that is the earlier of the following: (i) Patrick Dovigi and/or his affiliates no longer beneficially own, directly or indirectly, at least 2.0% of the aggregate of the issued and outstanding subordinate voting shares and multiple voting shares; (ii) Patrick Dovigi is no longer serving as a director or in a senior management position at GFL; or (iii) the twentieth anniversary of the closing of the IPO. The subordinate voting shares and multiple voting shares rank pari passu with respect to the payment of dividends, return of capital and distribution of assets in the event of liquidation, dissolution or winding up of GFL. Preferred shares The preferred shares are issuable at any time and from time to time in series. Each series of preferred shares shall consist of such number of preferred shares and having such rights, privileges, restrictions and conditions as determined by the Board of Directors prior to the issuance thereof. On October 1, 2020, GFL issued US$600.0 million of perpetual convertible preferred shares (“the Preferred Shares”) to funds managed by HPS Investment Partners, LLC (“HPS”). Pursuant to the terms of the private placement, HPS subscribed for 28,571,428 Preferred Shares at US$21.00 per share for gross proceeds of US$600.0 million. Based on a conversion price of US$25.20 per share, as at December 31, 2020, the Preferred Shares are convertible into 24,226,190 subordinate voting shares of the Company, representing approximately 7.2% of the issued and outstanding subordinate voting shares and 5.3% of the outstanding voting rights attached to the Company’s shares. The holders of the Preferred Shares are entitled to vote on an as-converted basis on all matters on which holders of subordinate voting shares and multiple voting shares vote, and to the greatest extent possible, will vote with the holders of subordinate voting shares and multiple voting shares as a single class. Each holder of Preferred Shares shall be deemed to hold, for the sole purpose of voting at any meeting of shareholders of the Company at which such holder is entitled to vote, the number of Preferred Shares equal to the number of subordinate voting shares into which such holder’s registered Preferred Shares are convertible as of the record date for the determination of shareholders entitled to vote at such shareholders meeting. The liquidation preference of the Preferred Shares accrete at a rate of 7.000% per annum, compounded quarterly. From and after the fourth anniversary of the issuance of the Preferred Shares, GFL will have the option each quarter to redeem a number of Preferred Shares in an amount equal to the increase in the liquidation preference for the quarter. This optional redemption amount can be satisfied in either cash or subordinate voting shares at the election of GFL. If GFL elects to pay the optional redemption amount for a particular quarter in cash, the accretion rate for that quarter will be 6.000% per annum. The Preferred Shares are subject to transfer restrictions, but can be converted into subordinate voting shares by the holder at any time. GFL may also require the conversion or redemption of the Preferred Shares at an earlier date in certain circumstances. Amalgamation Effective March 5, 2020, immediately prior to the completion of the IPO, GFL amalgamated with Holdings. In connection with the amalgamation, all of the issued and outstanding shares of Holdings were exchanged for subordinate voting shares and multiple voting shares of GFL at an exchange ratio of 20.363259-for-one, other than the Class F shares of Holdings which were converted to multiple voting shares on an exchange ratio of 26.343032-for-one. As a result, the historical share and per share amounts presented in the Annual Financial Statements for the Successor have been retroactively adjusted to reflect this change. Share issuances and cancellations Common shares of Subordinated Multiple voting Preferred Total GFL Holdings voting shares shares shares Balance, December 31, 2019 180,794,203 180,794,203 — — — Exchange upon amalgamation of GFL Holdings — (180,794,203) 169,114,345 11,679,858 — Issued as partial consideration for acquisitions 3,092,118 — 3,092,118 — — Issued and fully paid during the year 171,060,581 — 142,106,047 383,106 28,571,428 Cancelled during the year (12,089) — (12,089) — — Balance, December 31, 2020 354,934,813 — 314,300,421 12,062,964 28,571,428 On January 1, 2020, GFL issued 2,056,331 subordinate voting shares as partial consideration for an acquisition. On February 1, 2020, GFL issued 1,035,787 subordinate voting shares as partial consideration for an acquisition. On February 1, 2020, in connection with his resignation as an officer of GFL, the Company issued Ven Poole a separation payment of 73,947 subordinate voting shares issued at the IPO price of US$19.00. Between January 1, 2020 and March 5, 2020, GFL issued 17,694,685 subordinate voting shares to its existing shareholders for aggregate cash consideration of $348.9 million and made a return of capital of $0.8 million. On March 5, 2020, in connection with the pre-closing capital changes implemented as part of the IPO, certain existing shareholders of Holdings subscribed for 47,496,202 subordinate voting shares for aggregate cash consideration of $1,064.6 million. Also, on this date, 704,800 subordinate voting shares were issued at the IPO price of US$19.00 in partial consideration for the redemption of the PIK Notes. On March 5, 2020, in conjunction with the IPO, GFL issued 73,361,842 subordinate voting shares for total gross proceeds received by GFL of $1,871.8 million (US$1,393.9 million). Share issuance costs, net of deferred tax, amounted to $45.5 million (US$33.9 million). On August 20, 2020, 11,145 subordinate voting shares were cancelled. On December 2, 2020, 944 subordinate voting shares were cancelled. Contributed surplus The contributed surplus consists of the following: Balance, December 31, 2018 $ 2.0 Share-based compensation expense $ 14.5 Balance, December 31, 2019 $ 16.4 Share-based compensation expense 37.9 Balance, December 31, 2020 $ 54.3 b) Share options, performance share units, restricted share units, and deferred share units Holdings established a stock option plan dated May 31, 2018, as amended on November 14, 2018 (the “Legacy Stock Option Plan”). In connection with the IPO, 159,468,329 options issued and outstanding under the Legacy Stock Option Plan (before exchange ratio restatement) with an exercise price of $1.00 (both of which are on a pre-converted basis) vested in accordance with the terms of the Legacy Stock Option Plan. After giving effect to the IPO, the options exercised on a net basis, less applicable withholding taxes, into 3,203,925 subordinate voting shares (the “Legacy Option Shares”). At completion of the IPO, there were no options outstanding under the Legacy Stock Option Plan and such plan was terminated. Unless otherwise determined by the Board of Directors, the Legacy Option Shares will be held by a trustee in trust or in escrow on behalf of the legacy option holders. One In connection with the IPO, a long-term incentive plan (“LTIP”) was adopted by the Board of Directors which allowed GFL to grant long-term equity-based incentives, including options, performance stock units (“PSUs”), and restricted stock units (“RSUs”), to eligible participants. Each award represents the right to receive subordinate voting shares, or in the case of PSUs and RSUs, subordinate voting shares and/or cash, in accordance with the terms of the LTIP. The director deferred share unit plan (the “DSU Plan”) was adopted by the Board of Directors, to provide non-employee directors the opportunity to receive a portion of their compensation in the form of deferred share units (“DSUs”). Each DSU represents a unit equivalent in value to a subordinate voting share based on the closing price of the subordinate voting shares on the day prior to the grant. The maximum number of subordinate voting shares reserved for issuance under the LTIP, the DSU Plan, and any other security-based compensation arrangement in any one-year period is 10% of the total issued and outstanding subordinate voting shares and multiple voting shares in the capital or as of December 31, 2020, would equate to 32,636,339 subordinate voting shares in the capital of the Company. Options Changes in the number of share options held by officers and employees with their average exercise price per option are summarized below: December 31, 2020 Weighted average Options exercise price (US$) Share options outstanding, December 31, 2019 — $ — Granted 19,643,184 28.05 Share options outstanding, December 31, 2020 19,643,184 $ 28.05 Vested share options, December 31, 2020 3,928,636 $ 19.00 For the year ended December 31, 2020, there were share The weighted-average fair value of the share options granted in 2020 and the weighted-average assumptions used in the Black-Scholes option valuation model to determine their fair value at the grant date are as follows: Grant date share price (USD per option) $ 19.00 Grant date fair value (USD in millions) $ 23.6 Expected volatility (%) 23.51 % Expected dividend yield (%) nil Expected life (years) 4.2 Risk-free interest rate (%) 0.65 % Expected volatility was calculated based upon the historical average volatility of comparable public companies. The fair value of the options is recognized as compensation expense over the vesting period. For the year ended December 31, 2020, the total compensation expense related to share options amounted to $30.5 million ($14.5 million for the year ended December 31, 2019, $2.0 million for the seven month period ended December 31, 2018, and $18.8 million for the five month period ended May 31, 2018). For the year ended December 31, 2020, total compensation expense consisted of an expense under the LTIP of $22.3 million and an expense under the Legacy Stock Option Plan of $8.2 million. RSUs and DSUs During the year ended December 31, 2020, 1,524,358 RSUs were granted to eligible participants. The RSUs vest ratably over a three-year period following the first anniversary of the date of grant in increments of 33.3% per annum, subject to the participants’ continued employment. When cash dividends are paid on the subordinate voting shares, the recipient shall receive additional units (“Dividend Share Units”) as of the dividend payment date. Dividend Share Units are subject to the same vesting provision as the RSUs. Upon vesting, the RSUs will be settled in either cash or subordinated voting shares, at the option of the Company. None of the RSUs granted have vested. The fair value of the RSUs granted during the year ended December 31, 2020, was based on the closing price of the subordinate voting shares on the day prior to the grant US$19.00. The fair value of the RSUs is recognized as compensation expense over the vesting period. For the year ended December 31, 2020, the total compensation expense related to RSUs amounted to $6.9 million. During the year ended December 31, 2020, 18,248 DSUs were granted to non-employee directors for compensation under the DSU Plan. The grant date fair values of US$19.00 per share and US$21.26 per share were determined by the Board of Directors, based on the closing price of the subordinate voting shares on the day prior to the grant. The DSUs vest immediately and are exercisable upon the non-employee director’s departure from service. For the year ended December 31, 2020, the total compensation expense related to DSUs amounted to $0.5 million. A summary of the status of RSUs and DSUs granted under the LTIP is as follows: December 31, 2020 December 31, 2020 Weighted Weighted average grant average grant RSUs date fair value (US$) DSUs date fair value (US$) Outstanding, December 31, 2019 — $ — — $ — Granted 1,524,358 19.95 18,248 19.92 Cancelled (1,699) 19.00 — — Outstanding, December 31, 2020 1,522,659 $ 19.95 18,248 $ 19.92 Expected to vest 1,482,660 $ 19.95 18,248 $ 19.92 For the year ended December 31, 2020, there were RSU exercised expired forfeited

SUPPLEMENTAL CASH FLOW INFORMAT

SUPPLEMENTAL CASH FLOW INFORMATION	12 Months Ended
SUPPLEMENTAL CASH FLOW INFORMATION	Dec. 31, 2020
SUPPLEMENTAL CASH FLOW INFORMATION
SUPPLEMENTAL CASH FLOW INFORMATION	18. SUPPLEMENTAL CASH FLOW INFORMATION Net change in non-cash working capital Successor Predecessor December 31, December 31, December 31, May 31, 2018 2020 2019 2018 (214 days) (151 days) Effects of changes in Accounts payable and accrued liabilities $ 83.4 $ 13.3 $ 13.2 $ 66.6 Trade and other receivables — net of allowance (77.7) (57.3) (38.5) (16.8) Prepaid expenses and other assets (0.5) (30.6) (8.2) (5.3) Income taxes payable — (0.3) 3.2 (0.2) $ 5.2 $ (74.9) $ (30.3) $ 44.3

FINANCIAL INSTRUMENTS AND RISK

FINANCIAL INSTRUMENTS AND RISK MANAGEMENT	12 Months Ended
FINANCIAL INSTRUMENTS AND RISK MANAGEMENT	Dec. 31, 2020
FINANCIAL INSTRUMENTS AND RISK MANAGEMENT
FINANCIAL INSTRUMENTS AND RISK MANAGEMENT	19. FINANCIAL INSTRUMENTS AND RISK MANAGEMENT GFL’s financial instruments consist of cash and cash equivalent, trade accounts receivable, trade accounts payable, long-term debt, and tangible equity units. Fair value measurement The carrying value of GFL’s financial assets are equal to their fair values. The carrying value of GFL’s financial liabilities approximate their fair values with the exception of GFL’s Bonds and Amortizing Notes. The fair value hierarchy for GFL’s financial assets and liabilities not measured at fair value are as follows: December 31, 2020 Carrying Value Fair Value Level 1 Level 2 Level 3 Bonds $ 4,272.6 $ 4,454.3 $ — $ 4,454.3 $ — Amortizing Notes $ 123.4 126.8 — 126.8 — Total debt $ 4,396.0 $ 4,581.1 $ — $ 4,581.1 $ — December 31, 2019 Carrying Value Fair Value Level 1 Level 2 Level 3 Bonds $ 3,249.4 $ 3,092.3 $ — $ 3,092.3 $ — Total debt $ 3,249.4 $ 3,092.3 $ — $ 3,092.3 $ — GFL uses a discounted cash flow model incorporating observable market data, such as foreign currency forward rates, to estimate the fair value of its bonds. Certain of the mortgages, finance leases, equipment loans and amount due to related party do not bear interest or bear interest at an amount that is not stated at fair value. Purchase Contracts and derivative instruments, which are recorded at fair value, are classified within Level 2. Financial risk management objectives As a result of holding and issuing financial instruments, GFL is exposed to liquidity, credit and market risks. The following provides a description of these risks and how GFL manages these exposures. Credit risk Credit risk is the risk of loss associated with a counterparty’s inability to fulfill its payment obligations. GFL’s principal financial assets that expose it to credit risk are accounts receivable. GFL uses historical trends of default, the timing of recoveries and the amount of loss incurred, adjusted for management’s judgement as to whether current economic and credit conditions are such that the actual losses are likely to be greater or less than suggested by historical trends. GFL considers the following as constituting an event of default for internal credit risk management purposes as historical experience indicates that accounts receivable that meet either of the following criteria are generally not recoverable: ● the customer is insolvent; or ● GFL’s relationship with the customer has been severed; and/or ● the customer’s receivable has aged beyond a reasonable period. GFL provides credit to its customers in the normal course of its operations. The amounts disclosed in the statement of financial position represent the maximum credit risk and are net of allowance for doubtful accounts, based on management’s estimates taking into account GFL’s prior experience and its assessment of the current economic environment. The following is a breakdown of the trade receivables aging. It does not include holdbacks or unbilled revenue as they are made up of amounts to be received at the end of specific long-term contracts. December 31, 2020 December 31, 2019 0-60 days $ 543.8 $ 394.9 61-90 days 47.3 61.2 91+ days 77.7 86.3 $ 668.8 $ 542.4 In determining the recoverability of trade and other receivables, GFL considers any change in the credit quality of the trade receivable from the date credit was initially granted up to the end of the reporting period. Liquidity risk GFL monitors and manages its liquidity to ensure that it has access to sufficient funds to meet its liabilities when due. Management of GFL believes that future cash flows from operations and the availability of credit under existing bank arrangements is adequate to support GFL’s financial liquidity needs for its ongoing operations. At December 31, 2020, available sources of liquidity include GFL’s Revolving Credit Facility of $628.0 million and US$40.0 million of which $148.8 million was drawn as at December 31, 2020 ($nil at December 31, 2019). GFL has financial liabilities with varying contractual maturity dates. With the exception of long-term debt and lease obligations, all of GFL’s significant financial liabilities mature in less than one year. Interest rate risk Interest rate risk is the risk that the fair value or future cash flows of a financial liability will fluctuate because of changes in market interest rates. GFL enters into both fixed and floating rate debt, including equipment loans and also leases certain assets with fixed rates. GFL’s risk management objective is to minimize the potential for changes in interest rates to cause adverse changes in cash flows to GFL. The ratio of fixed to floating rate obligations outstanding is designed to maintain flexibility in GFL’s capital structure to adjust to prevailing market conditions. At December 31, 2020, GFL had a ratio of fixed to floating rate obligations of approximately 70.2% fixed and 29.8% floating (as at December 31, 2019 56.4% fixed, 43.6% floating). A 1% change in the interest rate on floating rate obligations would have resulted in a change in the interest expense for the year ended December 31, 2020, of approximately $ 18.2 Foreign currency risk GFL manages its currency risk in respect of its outstanding U.S. dollar senior unsecured notes with certain cross-currency interest rate swaps. GFL’s swapped instruments included the following: Fixed Foreign Notional Fixed/Variable Fixed/Variable Exchange Rate Underlying Notes Amount ($US) Interest Rate Paid Interest Rate Received Paid Effective Date Expiration 9.875% 2021 Notes 30.6 9.890 % 9.875 % 1.4130 February 1, 2016 February 1, 2021 Term Loan 403.6 3-Month CDOR + 3.174 % 3-Month LIBOR + 2.750 % 1.2976 May 31, 2018 May 30, 2025 8.500% 2027 Notes 48.0 8.399 % 8.500 % 1.3355 April 23, 2019 May 1, 2027 8.500% 2027 Notes 300.0 8.419 % 8.500 % 1.3355 April 23, 2019 May 1, 2027 5.125% 2026 Secured Notes 500.0 5.725 % 5.125 % 1.3245 December 16, 2019 December 15, 2026 4.250% 2025 Secured Notes 500.0 4.805 % 4.250 % 1.4198 April 29, 2020 June 1, 2025 4.000% 2028 Notes 500.0 4.524 % 4.000 % 1.3112 November 23, 2020 August 1, 2028 Concurrently with the offering of the 5.625% 2022 Notes, the 5.375% 2023 Notes, the 4.250% 2025 Secured Notes, the 5.125% 2026 Secured Notes, the 8.500% 2027 Notes, and the 4.000% 2028 Notes, GFL entered into cross-currency swaps to receive and pay interest semi-annually. A cross-currency swap was entered into for a portion of the 7.000% 2026 Notes. These effective cross-currency swaps eliminate the impact of changes in the value of the U.S. dollar between the date of issuance of the 5.625% 2022 Notes, the 5.375% 2023 Notes, the 4.250% 2025 Secured Notes, the 8.500% 2027 Notes, the 4.000% 2028 Notes, and the 5.125% 2026 Secured Notes and their respective maturity dates. On March 5, 2020, GFL fully redeemed the 5.625% 2022 Notes and 5.375% 2023 Notes as well as a portion of the 7.000% 2026 Notes and the 8.500% 2027 Notes and terminated the cross-currency interest rate swaps associated with the 5.625% 2022 Notes and 5.375% 2023 Notes and the redeemed portion of the 7.000% 2026 Notes and 8.500% 2027 Notes. On November 23, 2020, GFL issued the 4.000% 2028 Notes. Concurrently with the offering, GFL entered into cross-currency swaps to manage its currency risk. GFL used the net proceeds of the issuance to fund the redemption of the entire US$405.0 million outstanding aggregate principal amount, related fees, premiums and accrued interest on the 7.000% 2026 Notes and terminated the cross-currency interest rate swaps associated with the 7.000% 2026 Notes. GFL fully redeemed a previous note offering in 2018. GFL had entered into cross-currency interest rate swaps concurrently with the offering of the notes, which continued to be in place after the redemption of the notes. As a result of the redemption, GFL discontinued the use of hedge accounting. GFL entered into an offset swap to receive and pay interest semi-annually at 9.312% on $648.8 million and 9.875% on US$500.0 million respectively in order to fully hedge this exposure. In addition, the Company has exposure to foreign currency risk on its US Term Loan Facility due May 31, 2025. The Company manages a portion of this exposure with cash flow from its US operations and the Company entered into US$450.0 million in cross-currency swaps to hedge the impact of changes in the value of the U.S. dollar between the date of issuance of the Term Loan Facility and the Term Loan Facility maturity date of May 31, 2025, as adjusted for the mandatory repayments required under the Term Loan Facility. At maturity, the Company will have paid a total of $500.8 million in exchange for US$386.0 million. These cross-currency swaps have been designated at inception and accounted for as cash flow hedges. A gain, net of tax, in the fair value of derivatives designated as cash flow hedges in the amount of $1.8 million has been recorded in other comprehensive loss for the year ended December 31, 2020 (gain, net of tax in the amount of $61.2 million for the year ended December 31, 2019, loss, net of tax in the amount of $33.5 million for the seven month period ended December 31, 2018, and a gain of $3.8 million for the five month period ended May 31, 2018). Commodity risk GFL uses diesel fuel option agreements to manage a portion of its exposure to fluctuations in diesel fuel prices. The fair value of GFL’s fuel commodity contracts were obtained from dealer quotes. This value represents the estimated amount GFL would receive or pay to terminate the commodity contracts, taking into consideration the difference between the contract value of the fuel volume and values at the valuation date quoted for agreements of similar term and maturity. The fair value of the agreements represented an asset of approximately $3.7 million as of December 31, 2020, which is included in our net derivative instruments ($0.6 million as at December 31, 2019). GFL recognized an expense for changes in the fair value of the fuel contracts within its consolidated statements of operations of $1.8 million for the year ended December 31, 2020 ($1.0 million for the year ended December 31, 2019, $2.8 million for the seven month period ended December 31, 2018, and $nil for the five month period ended May 31, 2018). GFL markets a variety of recyclable materials, including cardboard, mixed paper, plastic containers, glass bottles and ferrous and aluminum metals. GFL owns and operates recycling operations and sells other collected recyclable materials to third parties for processing before resale. To reduce our exposure to commodity price risk with respect to recycled materials, GFL has adopted a pricing strategy of charging collection and processing fees for recycling volume collected from third parties. Capital management GFL defines capital that it manages as the aggregate of its shareholders’ equity and long-term debt net of cash. GFL makes adjustments to its capital based on the funds available to GFL in order to support the ongoing operations of the business and in order to ensure that the entities in GFL will be able to continue as going concerns, while maximizing the return to stakeholders through the optimization of the debt and equity balances. GFL manages its capital structure and makes adjustments to it in light of changes in economic conditions. In order to maintain or modify the capital structure, GFL may arrange new debt with existing or new lenders or obtain additional financing through other means. Management reviews its capital management approach on an ongoing basis and believes that this approach, given the size of GFL, is reasonable. There were no changes in GFL’s approach to capital management during the year ended December 31, 2020 and year ended December 31, 2019.

COMMITMENTS AND CONTINGENT LIAB

COMMITMENTS AND CONTINGENT LIABILITIES	12 Months Ended
COMMITMENTS AND CONTINGENT LIABILITIES	Dec. 31, 2020
COMMITMENTS AND CONTINGENT LIABILITIES
COMMITMENTS AND CONTINGENT LIABILITIES	20. COMMITMENTS AND CONTINGENT LIABILITIES a) Performance bonds In the normal course of business, GFL is required to provide performance bonds in respect of certain contracts which guarantee payment for labour, material and services in the event of a default by GFL. GFL has executed indemnity agreements in favour of the surety of these bonds. As at December 31, 2020, the aggregate contract limit for the bonds totaled $1,697.4 million ($778.6 million as at December 31, 2019). b) Contingent liabilities In the normal course of business activities, GFL is subject to a number of claims and legal actions that may be made by customers, suppliers or others. Though the final outcome of actions outstanding or pending at the end of the period is not determinable, management believes the resolutions will not have a material effect on the financial position, statement of operations or cash flow of GFL.

RELATED PARTY TRANSACTIONS

RELATED PARTY TRANSACTIONS	12 Months Ended
RELATED PARTY TRANSACTIONS	Dec. 31, 2020
RELATED PARTY TRANSACTIONS
RELATED PARTY TRANSACTIONS	21. RELATED PARTY TRANSACTIONS Included in due to related party is a non-interest bearing unsecured promissory note payable to Josaud Holdings Inc., an entity controlled by Patrick Dovigi, in an initial aggregate principal amount of $35.0 million, which is scheduled to mature on January 1, 2023. The note is being repaid in equal semi-annual instalments of $3.5 million. As at December 31, 2020, $17.5 million principal amount was outstanding on the note ($21.0 million as at December 31, 2019). Also included in due to related party is an interest bearing unsecured promissory note issued on March 5, 2020, payable to Sejosa Holdings Inc., an entity controlled by Patrick Dovigi, in an aggregate principal amount of $29.0 million and bearing market interests. The note is payable in equal semi-annual instalments of $2.9 million. The loan is scheduled to mature on March 5, 2025. As at December 31, 2020, $26.1 million principal amount was outstanding on the note ($nil as at December 31, 2019). These transactions are measured at the exchange amount, which is the amount of consideration established and agreed to by the related parties. On February 1, 2020, in connection with his resignation as an officer of GFL, the Company issued a director a separation payment of 73,947 subordinate voting shares issued at the IPO price of US$19.00. From time to time, GFL has entered into leases with entities controlled by affiliates of Patrick Dovigi, our Founder, Chief Executive Officer and a director of the Company as well as entities controlled by another director of the Company (the “Related Parties”). To date, GFL leases four properties from the Related Parties. These leases are on arm’s length and commercially reasonable terms and have been supported by rental rate comparisons prepared by third parties. None of the leased premises are material to the operations of GFL. For the year ended December 31, 2020, GFL paid $2.7 million ($1.6 million for the year ended December 31, 2019, $0.2 million for the seven month period ended December 31, 2018, and $nil for the five month period ended May 31, 2018) in aggregate lease payments to the Related Parties. Compensation of key management personnel The remuneration of key management personnel consisted of salaries, short-term benefits and share based payments. During the year ended December 31, 2020, total salaries and short-term benefits and share based payments to key management personnel was $41.8 million ($3.9 million for the year ended December 31, 2019, $59.3 million in the aggregate for the seven month period ended December 31, 2018 and the five month period ended May 31, 2018).

EXPENSES BY NATURE

EXPENSES BY NATURE	12 Months Ended
EXPENSES BY NATURE	Dec. 31, 2020
EXPENSES BY NATURE
EXPENSES BY NATURE	22. EXPENSES BY NATURE GFL’s expenses by nature are as follows: Successor Predecessor December 31, December 31, December 31, May 31, 2018 2020 2019 2018 (214 days) (151 days) Employee benefits $ 1,308.1 $ 1,022.5 $ 383.7 $ 207.0 Transfer and disposal costs 1,002.0 873.5 314.6 161.3 Interest and other finance costs 597.6 532.2 242.2 127.4 Depreciation of property and equipment 810.6 465.3 178.2 66.3 Amortization of intangible assets 427.0 334.1 127.5 40.9 Other expense 408.1 286.5 116.9 61.9 Transaction costs 60.1 65.5 103.7 42.4 IPO transaction costs 46.2 — — — Acquisition, rebranding and other integration costs 11.4 36.4 13.0 8.8 Unbilled revenue reversal — 31.6 — — Maintenance and repairs 244.1 183.8 65.6 31.9 Fuel costs 159.0 155.9 64.8 35.2 (Gain) loss on foreign exchange (37.3) (48.9) 39.6 16.6 Share-based payments 37.9 14.5 2.0 18.8 Loss (gain) on sale of property and equipment 4.6 1.2 4.7 (0.1) Mark-to-market loss on Purchase Contracts 449.2 — — — Impairment and other charges 21.4 — — — Deferred purchase consideration 2.0 2.0 1.0 1.0 Total expenses by nature $ 5,552.0 $ 3,956.1 $ 1,657.5 $ 819.4

SUMMARY OF SIGNIFICANT ACCOUN_2

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	12 Months Ended
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	Dec. 31, 2020
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Basis of presentation	Basis of presentation These Annual Financial Statements have been prepared in accordance with International Financial Reporting Standards ("IFRS"), as issued by the International Accounting Standards Board ("IASB").
Reclassification of Prior year presentation	Reclassification of prior year presentation Certain revenue disaggregation and segment reporting balances reported in prior periods have been reclassified for consistency with the current period presentation. These immaterial reclassifications had no effect on the reported consolidated results of operations. In the second quarter of 2019, GFL revised its accounting policy in regard to the presentation in certain "Other" revenue to reflect changes made in the manner in which results were being internally reported and managed. As a result of the policy revision, revenue previously disclosed as attributable to a specific service line was reclassified as "Other" revenue within the revenue by service line disclosure. During the year ended December 31, 2020, GFL moved one of its business units from its Infrastructure and soil remediation segment to its Solid waste segment to make the segment presentation consistent with an internal management reorganization. This move resulted in a decrease in Solid waste revenue and an increase in Infrastructure and soil remediation revenue. Also, during the year ended December 31, 2020, GFL harmonized the presentation of intercompany revenues across all of its business units for internal reporting purposes to align with how our chief operating decision maker (“CODM”) reviews results, which resulted in an increase to the amounts disclosed for Landfill, Transfer, Material Recovery and Intercompany revenue within GFL’s revenue by service type disclosure. Additionally, during the year ended December 31, 2020, GFL harmonized the presentation of corporate costs, which resulted in an increase to the amounts disclosed in Corporate and a decrease in Solid USA. All previously reported revenue by service type and segment information has been retrospectively adjusted to conform to the updated 2020 presentation. GFL has amended certain 2019 and 2018 balances due to rounding.
Basis Of measurement	Basis of measurement GFL’s Annual Financial Statements were prepared on the historical cost basis except for certain financial instruments that are measured at fair value at the end of the reporting period (see Note 19).
Presentation and functional currency	Presentation and functional currency These Annual Financial Statements are presented in Canadian dollars which is GFL’s functional currency.
Basis of consolidation	Basis of consolidation Subsidiaries are entities controlled by the Company. Control exists when the Company has power over an entity, exposure or rights to variable returns from the Company’s involvement with the entity, and the ability to use its power over the entity to affect the amount of the Company’s returns. The financial accounts and results of subsidiaries are included in the Annual Financial Statements of the Company from the date that control commences until the date that control ceases. When necessary, adjustments are made to the financial statements of subsidiaries to bring their accounting policies into line with the Company’s accounting policies. All intercompany assets and liabilities, equity, income, expenses and cash flows relating to transactions between the Company and its subsidiaries are eliminated in full on consolidation.
Property and equipment	Property and equipment Property and equipment are stated at cost, less accumulated depreciation and impairment. Assets are depreciated to residual values over their estimated useful lives, with depreciation commencing when an asset is ready for use. Significant parts of property and equipment that have different depreciable lives are depreciated separately. Judgment is used in determining the appropriate level of componentization. Depreciation is computed on a straight-line basis, unless otherwise stated, using the following useful lives: Type of property and equipment Depreciation term Buildings and improvements 10 Landfills Units of production Vehicles 10 Machinery and equipment 3 Containers 5 Right-of-use assets Shorter of lease term or life of underlying asset(s) The costs of repair and maintenance activities are recognized in the consolidated statement of operations as incurred. Distinguishing major inspections and overhaul from repairs and maintenance in determining which costs are capitalized is a matter of management judgement. An item of property and equipment is de-recognized upon disposal or when no future economic benefits are expected to arise from the continued use of the asset. Any gain or loss arising on de-recognition of the asset (calculated as the difference between net disposal proceeds and the carrying amount of the asset) is included as a gain or loss in the consolidated statement of operations in the period the asset is de-recognized. Property and equipment are reviewed at the end of each reporting period to determine whether there is any indication of impairment. If the possibility of impairment is indicated, the Company will estimate the recoverable amount of the asset and record any impairment loss in the consolidated statement of operations. Assets under development are not depreciated until they are available for use.
Landfill assets	Landfill assets Landfill assets represent the cost of landfill airspace, including original acquisition cost and landfill construction and development costs, incurred during the operating life of the site. Landfill assets also include capitalized landfill closure and post-closure costs, net of accumulated amortization, and the cost of either new or landfill expansion permits. The original cost of landfill assets, together with incurred and projected landfill construction and development costs, is amortized on a per unit basis as landfill airspace is consumed. Landfill assets are amortized over their total available disposal capacity representing the sum of estimated permitted airspace capacity (having received the final permit from the governing authorities) plus future permitted airspace capacity, representing an estimate of airspace capacity that management believes is probable of being permitted based on the following criteria: ● Personnel are actively working to obtain the permit or permit modifications necessary for expansion of an existing landfill, and progress is being made on the project; ● It is probable that the required approvals will be received within the normal application and processing periods for approvals in the jurisdiction in which the landfill is located; ● The Company has a legal right to use or obtain land associated with the expansion plan; ● There are no significant known political, technical, legal or business restrictions or issues that could impair the success of the expansion effort; ● Management is committed to pursuing the expansion; and ● Additional airspace capacity and related costs have been estimated based on the conceptual design of the proposed expansion. The Company has been successful in receiving approvals for expansions pursued; however, there can be no assurance that the Company will be successful in obtaining approvals for landfill expansions in the future.
Leasing arrangements	Leasing arrangements Leases are recognized as a right-of-use asset and a corresponding liability at the date at which the leased asset is available for use by the Company. Assets and liabilities arising from a lease are initially measured on a present value basis. Lease liabilities include the net present value of the following lease payments: ● fixed payments (including in-substance fixed payments), less any lease incentives receivable; ● variable lease payments that are based on an index or a rate; ● amounts expected to be payable by the lessee under residual value guarantees; ● the exercise price of a purchase option if the lessee is reasonably certain to exercise that option; and ● payments of penalties for terminating the lease, if the lease term reflects the lessee exercising that option. As the interest rate implicit in GFL’s leases is typically not readily determinable, GFL utilizes its weighted average incremental borrowing rate to discount the lease payments. Right-of-use assets are measured at cost comprising the following: ● the amount of the initial measurement of lease liability; ● any lease payments made at or before the commencement date less any lease incentives received; ● any initial direct costs; and ● restoration costs.
Intangible assets	Intangible assets Intangible assets are stated at cost, less accumulated amortization and impairment, and consist of customer lists, municipal and other commercial contracts, non-compete agreements, and trade name, licenses and permits. The Certificate of Approval (“C of A”) licenses provide the Company with certain waste management rights in the province or state of issue and are considered to have an indefinite life and therefore are not subject to amortization, unless they relate to a leased facility in which case they are amortized over the lease term. Amortization is based on the estimated useful life using the following methods and rates: Type of intangible asset Amortization term Trade names, certificates of approval and other licenses Indefinite Customer lists and municipal contracts Straight-line 5 to 10 years Non-compete agreements Straight-line 5 years Intangible assets with indefinite useful lives are tested at least annually, at the cash-generating unit level for impairment. The assessment of indefinite life is reviewed annually to determine whether the indefinite life assessment continues to be supportable. If not, the change in the useful life assessment from indefinite to finite is made on a prospective basis. Intangible assets with finite lives are amortized over the useful economic life on a straight-line basis and assessed for impairment whenever there is an indication that the intangible asset may be impaired. Amortization expense is included as part of cost of sales.
Goodwill	Goodwill Goodwill arising on an acquisition of a business represents the excess of the purchase price over the fair value of the net identifiable assets of the acquired business. Goodwill is carried at cost as established at the date of acquisition of the business less accumulated impairment losses, if any. For the purpose of impairment testing, goodwill acquired in a business combination is, from the acquisition date, allocated to cash-generating units ("CGU"), or groups of CGUs, based on the lowest level within the entity in which the goodwill is monitored for internal management purposes. The allocation is made to those CGUs that are expected to benefit from the business combination in which the goodwill arose. The Company tests its goodwill for impairment at the operating segment level. Any potential impairment of goodwill is identified by comparing the recoverable amount of a group of CGUs to its carrying value. Goodwill is reduced by the amount of deficiency, if any. If the deficiency exceeds the carrying amount of goodwill, the carrying values of the remaining assets in the CGUs are reduced by the excess on a pro-rata basis. The Company tests goodwill for impairment annually on December 31, or more frequently if there are indications of impairment. The recoverable amount of a CGU is the higher of the estimated fair value less costs of disposal or value-in-use of the CGU. In assessing value-in-use, the estimated future cash flows are discounted using a pre-tax discount rate that reflects current market assessments of the time value of money and the risks specific to the asset.
Deferred financing costs	Deferred financing costs Deferred financing costs in respect of the Company’s long-term debt are presented as a reduction of long-term debt and are recognized using the effective interest method over the term of the related financing agreement.
Landfill closure and post-closure obligations	Landfill closure and post-closure obligations The Company recognizes the estimated liability for an asset retirement obligation that results from acquisition, construction, development or normal operations in the year in which it is incurred. Costs associated with capping, closing and monitoring a landfill or portions thereof after it ceases to accept waste, are initially measured at the discounted future value of the estimated cash flows over the landfill’s operating life, representing the period over which the site receives waste. This value is capitalized as part of the cost of the related asset and amortized over the asset’s useful life. Estimates are reviewed at least once annually and consider, amongst other things, regulations that govern each site. The Company estimates the fair value of landfill closure and post-closure costs using present value techniques that consider and incorporate assumptions and considerations marketplace participants would use in the determination of those estimates, including inflation, markups, inherent uncertainties due to the timing of work performed, information obtained from third parties, quoted and actual prices paid for similar work and engineering estimates. Inflation assumptions are based on management’s evaluation of current and future economic conditions and the expected timing of these expenditures. Fair value estimates are discounted applying the risk-free rate, which is a rate that is essentially free of default risk. In determining the risk-free rate, consideration is given to both current and future economic conditions and the expected timing of expenditures.
Revenue recognition	Revenue recognition The Company records revenue when control is transferred to the customer, generally at the time that the service is provided. Revenue is measured based on the consideration specified in a contract with a customer and excludes amounts collected on behalf of third parties. The Company recognizes revenue from the following major sources: Collection and disposal of solid waste The Company generates revenue through fees charged for the collection of solid waste including recyclables, from its municipal, residential and commercial and industrial customers. Revenues from these contracts are influenced by a variety of factors including collection frequency, type of service, type and volume or weight of waste and type of equipment and containers furnished to the customer. In addition to handling the Company’s own collected waste volumes, its transfer stations, material recovery facilities ("MRFs"), landfills and organic waste processing facilities generate revenue from tipping fees paid to the Company by municipalities and third-party haulers and waste generators and from the sale of recycled commodities. The Company also operates MRFs, transfer stations and landfills for municipal owners under a variety of compensation arrangements, including fixed fee arrangements or on a tonnage or other basis. Our municipal customer relationships are generally supported by contracts ranging from three three Certain future variable considerations of long-term customer contracts may be unknown upon entering into the contract, including the amount that will be billed in accordance with annual CPI, market costs for fuel and commodity prices. The amount to be billed is often tied to changes in an underlying base index such as a CPI or a fuel or commodity index, and revenue is recognized once the index is established for the future period. The Company does not disclose the value of unsatisfied performance obligations for these contracts as its 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. Collection and disposal of liquid waste The Company generates revenue through fees charged for the collection, management, transportation, processing and disposal of a wide variety of industrial and commercial liquid wastes. Revenue is primarily derived from fees charged to customers on a per service, volume and/or hour basis. Revenues from these contracts are influenced by a variety of factors including timing of contract, type of service, type and volume of liquid waste and type of equipment used. Revenue in the liquid waste business is also derived from the stewardship return incentives paid by most Canadian provinces in which the Company has liquid waste operations, as well as from the sale of used motor oil, solvents and downstream products to third parties. The fees received from third parties are based primarily on the market, type and volume of material sold. Generally, fees are billed and revenue is recognized at the time control is transferred. Revenue recognized under these agreements is variable in nature based on volumes and commodity prices at the time of sale, which are unknown at contract inception. Soil remediation and infrastructure contracts The Company earns revenue through fees collected for the excavation and transport of clean and contaminated soils and the remediation and disposal of contaminated and remediated soils. The Company also offers complementary civil, demolition, excavation and shoring services in its infrastructure business. In the soil remediation and infrastructure business, revenue is generated on a project basis, normally encompassing all of the above services. Fees charged for soil remediation and infrastructure contracts are determined based on the expected costs to complete each specific project. Revenue is recognized for these services based on the stage of completion of the contract, measured based on the expected remaining costs to complete the project. In cases where soil remediation services are sold outside of an infrastructure project, the fees for remediation and the related excavation operations are generated on a per tonne basis. Unbilled revenue Unbilled revenue occurs in certain situations, which vary by project. For example, amounts relating to contract assets are balances due from customers under construction contracts that arise when GFL receives payments from customers in relation with a series of performance related milestones. GFL will previously have recognized a contract asset for any work performed. Any amount previously recognized as a contract asset is reclassified to trade receivables at the point at which it is invoiced to the customer.
Share based payments	Share based payments Stock options issued by the Company as remuneration of its key employees, officers, and directors are settled in subordinate voting shares and are accounted for as equity-settled awards. The fair value of options granted is measured using either the Black-Scholes option pricing model or the Monte Carlo simulation methods, which rely on estimates of the expected risk-free interest rate, expected dividend payments, expected share price volatility, value of the Company’s shares and the expected average life of the options. The Company believes these models adequately capture the substantive features of the option awards and are appropriate to calculate their fair values. The fair value of the options determined at grant date is expensed over the vesting period using an accelerated method of amortization, with a corresponding increase to contributed surplus. Expense related to share-based payments is included as part of selling, general and administrative expense. Upon exercise of options, the amount recognized in contributed surplus for the awards and the cash received upon exercise are recognized as an increase in share capital. GFL has a long-term incentive plan (“LTIP”) to grant long-term equity-based incentives, including options, performance stock units (“PSUs”), restricted stock units (“RSUs”), and deferred share units (“DSUs”) to eligible participants. Each award represents the right to receive subordinate voting shares, or in the case of PSUs and RSUs, subordinate voting shares and/or cash, in accordance with the terms of the LTIP. Each DSU represents a unit equivalent in value to a subordinate voting share based on the closing price of the subordinate voting shares on the day prior to the grant. The fair value of the RSUs and DSUs granted are based on the closing price of the subordinate voting shares on the day prior to the grant. The fair value of the RSUs and DSUs are recognized as compensation expense over the vesting period. As of December 31, 2020, there have been no PSUs issued.
Income taxes	Income taxes Income tax expense or recovery is comprised of current and deferred income taxes. It is recognized in the consolidated statement of operations, except to the extent that the expense relates to items recognized directly in equity. A current or non-current tax liability/asset is the estimated tax payable/receivable on taxable earnings for the period, and any adjustments to taxes payable with respect to previous periods. The liability method is used to account for deferred tax assets and liabilities, which arise from temporary differences between the carrying amount of assets and liabilities recognized in the consolidated statement of financial position and their corresponding tax basis. The carry forward of unused tax losses and credits are recognized to the extent that it is probable they can be used in the future. The carrying amount of deferred income tax assets is reviewed at each financial position date and reduced to the extent it is no longer probable that the income tax asset will be recovered. Deferred tax assets and liabilities are calculated at the tax rates that are expected to apply when the asset or liability is recovered or settled. Current and deferred tax assets and liabilities are calculated using tax rates that have been enacted or substantively enacted at the end of the reporting date. Where current tax or deferred tax arises from the initial accounting for a business combination, the tax effect is included in the accounting for the business combination. Deferred tax liabilities are offset if a legally enforceable right exists to set off current income tax assets against current income tax liabilities and the deferred tax relates to the same taxable entity and the same taxation authority.
Financial instruments	Financial instruments Classification and measurement All financial assets and liabilities are recognized initially at fair value plus or minus transaction costs, except for financial instruments at fair value through profit or loss ("FVTPL"), for which transaction costs are expensed. Debt financial instruments are subsequently measured at FVTPL, fair value through other comprehensive income ("FVTOCI"), or amortized cost using the effective interest rate method. The Company determines the classification of its financial assets based on the Company’s business model for managing the financial assets and whether the instruments’ contractual cash flows represent solely payments of principal and interest on the principal amount outstanding. The Company’s derivatives designated as a hedging instrument in a qualifying hedge relationship are subsequently measured at FVTOCI. Equity instruments that meet the definition of a financial asset, if any, are subsequently measured at FVTPL or elected irrevocably to be classified at FVTOCI at initial recognition. Derivatives not designated in a qualified hedge relationship are measured at FVTPL. Financial liabilities are subsequently measured at amortized cost using the effective interest method or at FVTPL in certain circumstances or when the financial liability is designated as such. For financial liabilities that are designated as FVTPL, the amount of change in the fair value of the financial liability that is attributable to changes in the Company’s own credit risk of that liability is recognized in other comprehensive income or loss unless the recognition of the effects of changes in the liability’s credit risk in other comprehensive income or loss would create or enlarge an accounting mismatch in the consolidated statement of operations. The remaining amount of change in the fair value of the liability is recognized in the consolidated statement of operations. Changes in fair value of a financial liability attributable to the Company’s own credit risk that are recognized in other comprehensive income or loss are not subsequently reclassified to the consolidated statement of operations; instead, they are transferred to retained earnings, upon de-recognition of the financial liability. All of the Company’s financial assets are categorized within the amortized cost measurement category. All of the Company’s financial liabilities, with the exception of deferred foreign exchange derivatives and the TEU Purchase Contracts, are also categorized within the amortized cost measurement category. Deferred foreign exchange derivatives, which qualify for hedge accounting, are categorized within the FVTOCI category and the TEU Purchase Contracts (as defined below), which is a financial liability with embedded derivative features, is categorized within the FVTPL category. Impairment The Company uses a forward-looking Expected Credit Loss ("ECL") model to determine impairment of financial assets. ECLs are based on the difference between the contractual cash flows due in accordance with the contract and all the cash flows that the Company expects to receive. For trade receivables and holdbacks, the Company applies the simplified approach and has determined the allowance based on lifetime ECLs at each reporting date. The Company has established a provision that is based on the Company’s historical credit loss experience, adjusted for forward-looking factors specific to the customers and the economic environment. Hedge accounting The Company is exposed to the risk of currency fluctuations and has entered into currency derivative contracts and is exposed to the risk of fuel price fluctuations and has entered into fuel derivative contracts to hedge a portion of this exposure on the basis of planned transactions. Where hedge accounting is applied, the criteria are documented at the inception of the hedge and updated at each reporting date. The Company documents the relationship between hedging instruments and hedged items, as well as its risk management objectives and strategy for undertaking the hedging transactions. The Company also documents its assessment, at hedge inception and on an ongoing basis, of whether the derivatives that are used in hedging transactions are highly effective in offsetting changes in cash flows of hedged items. Basis of fair values Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The fair value measurement is based on the presumption that the transaction to sell the asset or transfer the liability takes place either: ● In the principal market for the asset or liability, or ● In the absence of a principal market, in the most advantageous market for the asset or liability. The Company uses valuation techniques that it believes are appropriate in the circumstances and for which sufficient data are available to measure fair value, maximizing the use of relevant observable inputs and minimizing the use of unobservable inputs. All assets and liabilities for which fair value is measured or disclosed in the Annual Financial Statements are categorized within the fair value hierarchy, described as follows, based on the lowest level input that is significant to the fair value measurement as a whole: Level 1 — quoted prices in active markets for identical assets or liabilities that the reporting entity has the ability to access at the measurement date. Level 2 — inputs other than quoted prices included within level 1 that are observable for the asset or liability, either directly or indirectly. Level 3 — are unobservable inputs for the asset or liability. Unobservable inputs are used to measure fair value to the extent that observable inputs are not available, thereby allowing for situations in which there is little, if any, market activity for the asset or liability at the measurement date. The fair values of certain of the Company’s financial instruments are determined using Level 1 and Level 2 fair value measurements. The Company does not have any Level 3 fair value measurements. In addition, there have been no significant transfers between levels.
Business combinations	Business combinations Acquisitions of subsidiaries and businesses are accounted for using the acquisition method. The consideration for each acquisition is measured as the aggregate of the fair values of assets given, liabilities incurred or assumed, and the equity instruments issued by the Company in exchange for control of the acquired company or business. Acquisition-related costs are recognized in the consolidated statement of operations as incurred. Where the consideration for the acquisition includes any asset or liability resulting from a contingent consideration arrangement, it is measured at fair value at the acquisition date. Contingent consideration is remeasured at subsequent reporting dates at its fair value, and the resulting gain or losses recognized in the consolidated statement of operations.
Critical accounting judgments and estimates	Critical accounting judgments and estimates The preparation of the Annual Financial Statements in conformity with IFRS requires management to make estimates, assumptions and judgments that affect the reported amounts of assets, liabilities, revenue, and expense for the period. Such estimates relate to unsettled transactions and events as of the date of the Annual Financial Statements. Accordingly, actual results may differ from estimated amounts as transactions are settled in the future. Estimates and assumptions are reviewed on an ongoing basis. Revisions to estimates are applied prospectively. The following areas are the critical judgments and estimates that management has made in applying the Company’s accounting policies and that have the most significant effect on amounts recognized in the Annual Financial Statements: ● Determining fair value of acquired assets and liabilities in business combinations ● Determining key assumptions for impairment testing ● Estimating the percentage of completion for certain revenue arrangements ● Estimating the expected credit losses related to trade and other receivables ● Forecasting future taxable income and the timing of reversal of temporary differences in connection with deferred income taxes ● Estimating the amount and timing of the landfill closure and post-closure obligations ● Estimating the useful lives of property and equipment and finite-life intangible assets ● Determining inputs into valuation models for equity-settled share-based payments ● Determining the mark-to-market valuation of the Purchase Contracts ● Determining the mark-to-market valuation of the hedging instruments
Foreign currency translation	Foreign currency translation Functional and presentation currency Items included in the financial statements of the Company’s subsidiaries are measured using the currency of the primary economic environment in which each entity operates (the functional currency). Foreign currency transactions are translated into Canadian dollars using the exchange rates prevailing at the date of the transactions or valuation when items are re-measured. Foreign exchange gains and losses resulting from the settlement of such transactions and from the changes at period-end exchange rates of monetary assets and liabilities denominated in foreign currencies are recognized in the consolidated statement of operations. Foreign operations The Company’s foreign operations are conducted through its subsidiaries located in the United States of America ("US subsidiaries"), whose functional currency is the United States dollar. The assets and liabilities of these US subsidiaries are translated into the presentation currency of the Company using the exchange rate at the reporting date. Revenues and expenses are translated at the average exchange rate for the period. The resulting foreign exchange translation differences are recorded as a currency translation adjustment in other comprehensive income or loss.
Change in Accounting Policies	Changes in Accounting Policies IFRS 9/IAS 39 and IFRS 7 Amendments, Interest rate benchmark reform The IASB issued amendments to IFRS 9, IAS 39 and IFRS 7 — Financial Instruments: Disclosures related to the first phase of interest rate benchmark reform. The amendments are effective for annual reporting periods beginning on or after January 1, 2020. GFL has assessed the impact of the amendments and concluded that they had no impact on the Annual Financial Statements. IFRS 3 Amendments, Definition of a business The IASB issued amendments to IFRS 3 — Business combinations to revise the definition of a business. The amendments are effective for business combinations for which the acquisition date is on or after the beginning of the first annual reporting period beginning on or after January 1, 2020, and to asset acquisitions that occur on or after the beginning of that period. GFL has assessed the impact of the amendments and concluded that they had no impact on the Annual Financial Statements. IAS 1 and IAS 8 Amendments, Definition of material The IASB issued amendments to IAS 1 — Presentation of financial statements and IAS 8 — Accounting policies, changes in accounting estimates and errors to revise the definition of material. The amendments are effective for annual reporting periods beginning on or after January 1, 2020. GFL has assessed the impact of the amendments and concluded that they had no impact on the Annual Financial Statements. Conceptual framework The IASB issued the revised conceptual framework for financial reporting to replace its 2010 conceptual framework. The revised conceptual framework is effective for annual periods beginning on or after January 1, 2020, with earlier application permitted. GFL assessed the revised conceptual framework and concluded that there is no impact on the Annual Financial Statements. Future changes in accounting policies The IASB has published Interest Rate Benchmark Reform - Phase 2 (Amendments to IFRS 9, IAS 39, IFRS 7, IFRS 4 and IFRS 16) with amendments that address issues that might affect financial reporting after the reform of an interest rate benchmark, including its replacement with alternative benchmark rates. The amendments are effective for annual reporting periods beginning or after January 1, 2021. GFL will continue to evaluate the impact of the amendments.

SUMMARY OF SIGNIFICANT ACCOUN_3

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)	12 Months Ended
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)	Dec. 31, 2020
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Schedule of useful life of property and equipment	Depreciation is computed on a straight-line basis, unless otherwise stated, using the following useful lives: Type of property and equipment Depreciation term Buildings and improvements 10 Landfills Units of production Vehicles 10 Machinery and equipment 3 Containers 5 Right-of-use assets Shorter of lease term or life of underlying asset(s)
Schedule of useful life of intangible assets	Type of intangible asset Amortization term Trade names, certificates of approval and other licenses Indefinite Customer lists and municipal contracts Straight-line 5 to 10 years Non-compete agreements Straight-line 5 years

BUSINESS COMBINATIONS (Tables)

BUSINESS COMBINATIONS (Tables)	12 Months Ended
BUSINESS COMBINATIONS (Tables)	Dec. 31, 2020
BUSINESS COMBINATIONS
Summary of net assets acquired	Year ended Year ended December 31, 2020 December 31, 2019 Net assets acquired Net working capital $ (63.5) $ 17.7 Right-of-use assets 23.4 47.2 Other long-term assets 0.5 — Property and equipment 1,483.4 258.1 Landfill 897.7 — Intangible assets Trade name, certificates of approval and other licenses 31.0 117.3 Customer lists and municipal contracts 449.2 131.8 Non-compete agreements 216.1 40.3 Goodwill 1,470.6 257.4 Assumption of lease obligations (23.4) (0.4) Other long-term liabilities (28.3) (47.2) Assumption of landfill closure and post-closure expenditures (262.6) (4.0) Deferred tax liabilities (123.4) (80.7) $ 4,070.7 $ 737.5 Consideration Accrued contingent consideration $ 23.1 $ 16.2 Share consideration issued 78.4 — Cash 3,969.2 721.3 $ 4,070.7 $ 737.5

TRADE AND OTHER RECEIVABLES (Ta

TRADE AND OTHER RECEIVABLES (Tables)	12 Months Ended
TRADE AND OTHER RECEIVABLES (Tables)	Dec. 31, 2020
TRADE AND OTHER RECEIVABLES
Summary of trade and other receivables	December 31, 2020 December 31, 2019 Trade $ 668.8 $ 542.4 Holdbacks 80.9 64.6 Unbilled revenue 129.7 113.9 Expected credit loss (12.1) (7.5) $ 867.3 $ 713.4

PREPAID EXPENSES AND INVENTORY

PREPAID EXPENSES AND INVENTORY (Tables)	12 Months Ended
PREPAID EXPENSES AND INVENTORY (Tables)	Dec. 31, 2020
PREPAID EXPENSES AND INVENTORY
Summary of prepaid expenses and inventory	December 31, 2020 December 31, 2019 Prepaid expenses and other assets $ 76.3 $ 81.6 Vehicle parts, supplies and inventory 57.4 50.5 $ 133.7 $ 132.1

PROPERTY AND EQUIPMENT (Tables)

PROPERTY AND EQUIPMENT (Tables)	12 Months Ended
PROPERTY AND EQUIPMENT (Tables)	Dec. 31, 2020
PROPERTY AND EQUIPMENT
Summary of property and equipment	Land, Machinery Assets building and and under Right-of- improvements Landfills Vehicles equipment development Containers use assets Total Cost Balance, December 31, 2018 $ 465.1 $ 681.8 $ 840.2 $ 338.8 $ 81.9 $ 168.3 $ — $ 2,576.1 IFRS 16 transition impact — — — — — — 103.8 103.8 Additions 68.4 81.3 120.7 85.2 134.0 47.0 26.7 563.3 Acquisitions via business combinations 77.9 4.0 72.5 91.1 — 12.6 47.2 305.3 Disposals (2.2) — (13.1) (1.7) — (12.9) (15.9) (45.8) Transfers 13.7 21.9 62.6 (6.5) (91.6) (0.1) — — Changes in foreign exchange (9.1) (23.1) (21.7) (6.0) (2.8) (7.9) (0.3) (70.9) Balance, December 31, 2019 613.8 765.9 1,061.2 500.9 121.5 207.0 161.5 3,431.8 Balance, December 31, 2019 613.8 765.9 1,061.2 500.9 121.5 207.0 161.5 3,431.8 Additions 73.2 92.6 164.8 119.2 21.3 43.5 40.7 555.3 Acquisitions via business combinations 560.0 897.7 455.0 291.3 5.0 172.1 23.4 2,404.5 Disposals (2.9) — (18.2) (10.7) — (3.8) (20.6) (56.2) Transfers 31.0 5.0 (0.3) 28.0 (63.5) (0.2) — — Changes in foreign exchange (28.8) (55.1) (31.1) (16.0) (1.0) (11.9) (1.5) (145.4) Balance, December 31, 2020 1,246.3 1,706.1 1,631.4 912.7 83.3 406.7 203.5 6,190.0 Accumulated depreciation Balance, December 31, 2018 6.6 36.8 53.6 30.3 — 12.4 — 139.7 Depreciation 20.8 126.9 164.5 80.5 — 49.4 23.2 465.3 Disposals (0.3) — (9.4) (0.7) — (5.7) (1.8) (17.9) Changes in foreign exchange (0.3) (1.5) (2.1) (0.5) — (0.9) (0.1) (5.4) Balance, December 31, 2019 26.8 162.2 206.6 109.6 — 55.2 21.3 581.7 Balance, December 31, 2019 26.8 162.2 206.6 109.6 — 55.2 21.3 581.7 Depreciation 32.6 111.9 224.7 122.6 — 49.3 37.8 578.9 Disposals (0.2) — (10.2) (2.2) — (3.1) (4.1) (19.8) Changes in foreign exchange (1.2) (8.4) (9.3) (3.1) — (2.8) (0.8) (25.6) Balance, December 31, 2020 58.0 265.7 411.8 226.9 — 98.6 54.2 1,115.2 Carrying amounts At December 31, 2019 $ 587.0 $ 603.7 $ 854.6 $ 391.3 $ 121.5 $ 151.8 $ 140.2 $ 2,850.1 At December 31, 2020 $ 1,188.3 $ 1,440.4 $ 1,219.6 $ 685.8 $ 83.3 $ 308.1 $ 149.3 $ 5,074.8

GOODWILL AND INTANGIBLE ASSET_2

GOODWILL AND INTANGIBLE ASSETS, NET (Tables)	12 Months Ended
GOODWILL AND INTANGIBLE ASSETS, NET (Tables)	Dec. 31, 2020
GOODWILL AND INTANGIBLE ASSETS, NET
Summary of carrying values of indefinite life and definite life intangible assets	December 31, 2020 December 31, 2019 Carrying amounts Indefinite life $ 641.4 $ 612.1 Definite life 2,452.0 2,235.9 $ 3,093.4 $ 2,848.0
Summary of changes in cost and amortization of goodwill and intangible assets	The following table presents the changes in cost and accumulated amortization of GFL’s goodwill and intangible assets: Trade name, Customer lists C of A and municipal and other Non-compete Goodwill contracts licenses agreements Total Cost Balance, December 31, 2018 $ 4,979.3 $ 2,337.6 $ 580.0 $ 150.7 $ 8,047.6 Acquisitions via business combinations 257.4 131.8 117.3 40.3 546.8 Changes in foreign exchange (128.3) (43.3) (1.7) (3.2) (176.5) Goodwill adjustment 65.4 — — — 65.4 Balance, December 31, 2019 5,173.8 2,426.1 695.6 187.8 8,483.3 Balance, December 31, 2019 5,173.8 2,426.1 695.6 187.8 8,483.3 Acquisitions via business combinations 1,470.6 449.2 31.0 216.1 2,166.9 Changes in foreign exchange (144.0) (30.7) (3.4) (6.4) (184.5) Balance, December 31, 2020 6,500.4 2,844.6 723.2 397.5 10,465.7 Accumulated amortization Balance, December 31, 2018 — 114.1 — 13.9 128.0 Amortization — 295.0 4.8 34.3 334.1 Changes in foreign exchange — (0.5) — (0.1) (0.6) Balance, December 31, 2019 — 408.6 4.8 48.1 461.5 Balance, December 31, 2019 — 408.6 4.8 48.1 461.5 Amortization — 341.6 8.9 76.5 427.0 Changes in foreign exchange — (12.2) (0.8) (3.6) (16.6) Balance, December 31, 2020 — 738.0 12.9 121.0 871.9 Carrying amounts At December 31, 2019 $ 5,173.8 $ 2,017.5 $ 690.8 $ 139.7 $ 8,021.8 At December 31, 2020 $ 6,500.4 $ 2,106.6 $ 710.3 $ 276.5 $ 9,593.8

LANDFILL CLOSURE AND POST-CLO_2

LANDFILL CLOSURE AND POST-CLOSURE OBLIGATIONS (Tables)	12 Months Ended
LANDFILL CLOSURE AND POST-CLOSURE OBLIGATIONS (Tables)	Dec. 31, 2020
LANDFILL CLOSURE AND POST-CLOSURE OBLIGATIONS
Summary of other provisions	December 31, 2020 December 31, 2019 Balance, beginning of period $ 236.6 $ 162.8 Acquisitions via business combinations 262.6 4.0 Adjustment related to prior year acquisitions — 5.9 Provisions 266.0 78.7 Accretion 6.9 6.1 Expenditures (21.7) (15.3) Changes in foreign exchange (14.8) (5.6) Balance, end of period 735.6 236.6 Less: Current portion (55.3) (25.6) $ 680.3 $ 211.0
Schedule of landfill closure and post-closure obligation matures	Less than 1 year $ 55.3 Between 1-2 years 38.0 Between 2-5 years 83.5 Over 5 years 558.8 $ 735.6

LONG-TERM DEBT (Tables)

LONG-TERM DEBT (Tables)	12 Months Ended
LONG-TERM DEBT (Tables)	Dec. 31, 2020
LONG-TERM DEBT
Summary of long-term debt	December 31, 2020 December 31, 2019 Revolving credit and swingline facility Revolving credit facility $ 148.8 $ — Term loan Term loan facility 1,671.6 3,351.2 Bonds 5.625% USD senior unsecured notes (“5.625% 2022 Notes”) (1) — 454.6 5.375% USD senior unsecured notes (“5.375% 2023 Notes”) (2) — 519.5 4.250% USD senior secured notes (“4.250% 2025 Secured Notes”) (3) 636.6 — 3.750% USD senior secured notes (“3.750%% 2025 Secured Notes”) (4) 954.9 — 7.000% USD senior unsecured notes (“7.000% 2026 Notes”) (5) — 876.7 5.125% USD senior secured notes (“5.125% 2026 Secured Notes”) (6) 636.6 649.4 8.500% USD senior unsecured notes, (“8.500% 2027 Notes”) (7) 458.4 779.3 4.000% senior unsecured notes, (“4.000% 2028 Notes”) (8) 636.6 — 3.500% USD senior secured notes (“3.500% 2028 Secured Notes”) (9) 954.9 — Paid in Kind notes 11.000% Paid in Kind notes (“PIK Notes”), semi-annual interest commencing December 1, 2018, principal maturing on May 31, 2028 — 1,008.0 Promissory notes — 27.5 Equipment loans and other At interest rates ranging from 3.02% to 4.37% 9.2 9.5 Subtotal 6,107.6 7,675.7 Fair value adjustment, discount and premium on bonds (5.4) (30.1) Net derivative instruments 122.3 31.1 Deferred finance costs (58.4) (51.6) Total long-term debt 6,166.1 7,625.1 Less: Current portion (4.6) (64.4) Total non-current long-term debt $ 6,161.5 $ 7,560.7 (1) The 5.625% 2022 Notes bear interest semi-annually which commenced May 12, 2017 with principal maturing on May 1, 2022. (2) The 5.375% 2023 Notes bear interest semi-annually which commenced September 1, 2018 with principal maturing on March 1, 2023. (3) The 4.250% 2025 Secured Notes bear interest semi-annually which commenced December 1, 2020 with the principal maturing on June 1, 2025. (4) The 3.750% 2025 Secured Notes bear interest semi-annually commencing February 1, 2021 with the principal maturing on August 1, 2025. (5) The 7.000% 2026 Notes bear interest semi-annually which commenced December 1, 2018 with principal maturing on June 1, 2026. (6) The 5.125% 2026 Secured Notes bear interest semi-annually which commenced on December 15, 2019 with principal maturing on December 15, 2026. (7) The 8.500% 2027 Notes bear interest semi-annually which commenced on May 1, 2019 with principal maturing on May 1, 2027. (8) The 4.000% 2028 Notes bear interest semi-annually commencing February 1, 2021 with principal maturing on August 1, 2028. (9) The 3.500% 2028 Secured Notes bear interest semi-annually commencing September 1, 2021 with principal maturing on September 1, 2028.
Schedule of changes in long-term debt arising from financing activities	The opening and closing balances of long-term debt are reconciled as follows: December 31, 2020 December 31, 2019 Balance, beginning of period $ 7,625.1 $ 6,288.7 Cash flows Issuance of long-term debt 4,667.9 3,143.8 Repayment of long-term debt (6,200.3) (1,569.9) Payment of financing costs (41.0) (20.7) Non-cash changes Reclassification of finance leases — (64.4) PIK note exchanged for common shares — (61.1) Assumed via business combinations — 0.4 Accrued interest and other non-cash changes 125.6 153.4 Revaluation of foreign exchange (129.7) (160.9) Fair value movements on cash flow hedges 118.5 (84.2) Balance, end of period $ 6,166.1 $ 7,625.1
Schedule of maturities	Principal future payments on long term debt in each of the next five years are as follows: Long-term debt 2021 $ 4.6 2022 0.5 2023 0.2 2024 3.7 2025 1,591.5 Thereafter 4,507.1 $ 6,107.6

INTEREST AND OTHER FINANCING _2

INTEREST AND OTHER FINANCING COSTS (Tables)	12 Months Ended
INTEREST AND OTHER FINANCING COSTS (Tables)	Dec. 31, 2020
INTEREST AND OTHER FINANCING COSTS
Summary of interest and other financing costs	GFL’s interest and other financing costs are comprised of the following: Successor Predecessor December 31, December 31, December 31, May 31, 2018 2020 2019 2018 (214 days) (151 days) Interest $ 372.4 $ 472.7 $ 149.5 $ 85.1 Loss on extinguishment of debt 168.7 — — — Amortization of deferred financing costs 36.1 9.7 23.3 4.1 Accretion of landfill closure and post-closure obligations 6.9 6.1 1.2 1.3 Other financing costs 13.5 43.7 68.2 36.9 Interest and other finance costs $ 597.6 $ 532.2 $ 242.2 $ 127.4

LEASE OBLIGATIONS (Tables)

LEASE OBLIGATIONS (Tables)	12 Months Ended
LEASE OBLIGATIONS (Tables)	Dec. 31, 2020
LEASE OBLIGATIONS
Summary of additional information about leasing activities for lessee	December 31, 2020 December 31, 2019 Lease obligations $ 241.0 $ 246.4 Less: Interest 49.8 54.3 191.2 192.1 Less: Current portion 37.5 33.2 $ 153.7 $ 158.9
Schedule of maturities of operating lease payments	Principal and interest payments on future minimum lease payments under the lease obligations in each of the next five years are as follows: Lease liabilities 2021 $ 39.8 2022 65.1 2023 28.2 2024 19.5 2025 26.5 Thereafter 61.9 $ 241.0

TANGIBLE EQUITY UNITS (Tables)

TANGIBLE EQUITY UNITS (Tables)	12 Months Ended
TANGIBLE EQUITY UNITS (Tables)	Dec. 31, 2020
TANGIBLE EQUITY UNITS
Summary of components of tangible equity units	Purchase Contracts Amortizing Notes Total Fair value price per TEU on issuance $ 55.71 $ 11.43 $ 67.14 Gross proceeds 863.5 177.2 1,040.7 Issuance costs (28.1) (5.7) (33.8) Net proceeds on issuance $ 835.4 $ 171.5 $ 1,006.9
Schedule of carrying value of tangible equity units	December 31, 2020 December 31, 2019 Amortizing Notes $ 123.4 $ — Purchase Contracts 1,263.7 — 1,387.1 — Less: Current portion of Amortizing Notes (59.2) — $ 1,327.9 $ —
Schedule of future payments on the amortizing Notes of tangible equity units	Amortizing Notes 2021 $ 59.2 2022 59.2 2023 14.8 $ 133.2

INCOME TAXES (Tables)

INCOME TAXES (Tables)	12 Months Ended
INCOME TAXES (Tables)	Dec. 31, 2020
INCOME TAXES
Schedule of income tax reconciliation	Successor Predecessor December 31, December 31, December 31, May 31, 2018 2020 2019 2018 (214 days) (151 days) Loss before income taxes $ (1,355.8) $ (609.2) $ (432.7) $ (191.6) Income tax recovery at the combined basic federal and provincial tax rate (26.5% in 2020; 26.5% in 2019; and 26.5% in 2018) (359.3) (161.4) (114.7) (50.8) Decrease (increase) resulting from: Permanent differences 12.5 8.8 5.3 3.7 Variance between combined Canadian tax rate and the tax rate applicable to U.S. earnings (1.3) 1.9 1.3 0.9 (Recognition) non-recognition of deferred tax assets (11.1) (6.5) (1.6) 11.9 Other (1.7) (0.3) (4.3) 7.3 Income tax recovery $ (360.9) $ (157.5) $ (114.0) $ (26.9)
Schedule of deferred tax assets and liabilities	Balance, Acquisitions Recognized in Balance, December 31, via business Foreign Recognized in Recognized in other December 2019 combinations exchange equity net loss comprehensive loss 31, 2020 Deferred tax assets Non-capital loss carry forwards $ 216.3 $ 68.4 $ (1.5) $ — $ 143.6 $ — $ 426.8 Landfill closures and post-closure obligations 55.0 64.2 (0.7) — 61.4 — 179.9 Accrued liabilities 2.5 6.1 — — 1.5 — 10.1 Other 50.8 — (0.4) 22.3 33.3 — 106.0 324.6 138.7 (2.6) 22.3 239.8 — 722.8 Deferred tax liabilities Property and equipment 383.4 212.1 (2.2) — 77.9 — 671.2 Intangible assets 663.4 41.1 (4.2) — (84.6) — 615.7 Cash flow hedges 14.9 — — — — (5.1) 9.8 Other (3.3) 8.9 2.2 — (115.7) — (107.9) 1,058.4 262.1 (4.2) — (122.4) (5.1) 1,188.8 Net deferred income tax liabilities $ 733.8 $ 123.4 $ (1.6) $ (22.3) $ (362.2) $ (5.1) $ 466.0 Balance, Acquisitions Recognized in Balance, December 31, via business Foreign Recognized other December 31, 2018 combinations (1) exchange in net loss comprehensive loss 2019 Deferred tax assets Non-capital loss carry forwards $ 142.1 $ (12.3) $ (4.4) $ 90.9 $ — $ 216.3 Landfill closures and post-closure obligations 40.0 2.2 (1.3) 14.1 — 55.0 Accrued liabilities 5.4 (0.1) (0.3) (2.5) — 2.5 Other 28.0 14.5 (2.0) 10.3 — 50.8 215.5 4.3 (8.0) 112.8 — 324.6 Less: Non-recognition of deferred tax assets (20.3) — (0.3) 20.6 — — 195.2 4.3 (8.3) 133.4 — 324.6 Deferred tax liabilities Property and equipment 309.0 50.8 (11.8) 35.4 — 383.4 Intangible assets 664.5 81.0 (11.7) (70.4) — 663.4 Cash flow hedges (7.5) — — (0.1) 22.5 14.9 Other (11.7) — 0.5 7.9 — (3.3) 954.3 131.8 (23.0) (27.2) 22.5 1,058.4 Net deferred income tax liabilities $ 759.1 $ 127.5 $ (14.7) $ (160.6) $ 22.5 $ 733.8 (1) Acquisitions via business combinations includes $46.8 million of measurement period adjustments to adjust previously reported purchase price allocations completed during 2018.

LOSS PER SHARE (Tables)

LOSS PER SHARE (Tables)	12 Months Ended
LOSS PER SHARE (Tables)	Dec. 31, 2020
LOSS PER SHARE
Schedule of loss per share	Diluted loss per share amounts are calculated by dividing the net loss attributable to equity and TEU holders by the weighted average number of shares outstanding during the period plus the weighted average number of shares, if any, that would be issued on exercise of stock options, to the extent that they are considered dilutive. Successor Predecessor December 31, December 31, December 31, May 31, 2018 2020 2019 2018 (214 days) (151 days) Net loss $ (994.9) $ (451.7) $ (318.7) $ (164.7) Less amounts attributable to preferred shareholders 13.7 — — — Adjusted net loss $ (1,008.6) $ (451.7) $ (318.7) $ (164.7) Weighted average shares outstanding (1),(2) 360,383,291 180,545,277 149,028,989 571,497,668 Weighted average number of shares on exercise of stock options, conversion of TEUs, and conversion of preferred shares — — — — Diluted weighted average number of shares outstanding 360,383,291 180,545,277 149,028,989 571,497,668 Loss per share Basic and Diluted $ (2.80) $ (2.50) $ (2.14) $ (0.29) (1) Weighted average shares at December 31, 2020 includes the 33,991,500 minimum subordinate voting share conversion of the TEUs. (2) Weighted average shares at December 31, 2019 and December 31, 2018 adjusted for share split completed in conjunction with the pre-capital closing changes implemented as part of the IPO.

SALES AND OPERATING REVENUE (Ta

SALES AND OPERATING REVENUE (Tables)	12 Months Ended
SALES AND OPERATING REVENUE (Tables)	Dec. 31, 2020
SALES AND OPERATING REVENUE
Schedule of disaggregation of revenue from contracts with customers	The following table presents GFL’s revenue disaggregated by service type and segment. Successor Predecessor December 31, December 31, December 31, 2018 May 31, 2018 2020 2019 (1) (214 days) (2) (151 days) (3) Residential $ 1,067.8 $ 815.3 $ 272.1 $ 135.4 Commercial/industrial 1,350.1 1,106.9 340.1 173.2 Total collection 2,417.9 1,922.2 612.2 308.6 Landfill 348.4 255.5 77.8 37.2 Transfer 426.7 337.2 98.2 56.4 Material recovery 263.3 95.5 28.2 18.2 Other 226.6 172.0 83.1 40.1 Solid waste 3,682.9 2,782.4 899.5 460.5 Infrastructure and soil remediation 535.1 538.3 260.7 135.1 Liquid waste 455.8 385.2 168.3 88.7 Intercompany revenue (477.6) (359.0) (103.7) (56.5) Revenue $ 4,196.2 $ 3,346.9 $ 1,224.8 $ 627.8 Refer to Note 2 for additional details on the reclassifications outlined below: (1) Includes reclassification to increase Intercompany revenue by $45.9 million and decrease Infrastructure and soil remediation revenue by $2.1 million. This resulted in increases in revenue of $20.8 million in Landfill, $25.7 million in Transfer, $1.2 million in Material recovery and $0.3 million in Commercial. There was no change in total revenue. (2) Includes reclassification to decrease revenues of $35.7 million from Material recovery, $ 1.8 million from Liquid waste and $ 0.1 million from Infrastructure and soil remediation. This resulted in increases in revenue of $ 36.7 million in Other and $ 1.0 million in Landfill. There was no change in total revenue. (3) Includes reclassification to decrease revenues of $ 21.4 million in Material recovery. This resulted in increases in revenue of $20.5 million in Other, $0.7 million in Liquid waste and $0.2 million in Landfill. There was no change in total revenue.

SEGMENT REPORTING (Tables)

SEGMENT REPORTING (Tables)	12 Months Ended
SEGMENT REPORTING (Tables)	Dec. 31, 2020
SEGMENT REPORTING
Schedule of operating segments	Year ended December 31, 2020 Gross Intercompany Adjusted Successor Revenue Revenue Revenue EBITDA Solid waste Canada $ 1,417.8 $ (187.0) $ 1,230.8 $ 338.6 USA 2,262.0 (236.2) 2,025.8 639.2 Solid waste 3,679.8 (423.2) 3,256.6 977.8 Infrastructure and soil remediation 538.2 (10.9) 527.3 91.6 Liquid waste 455.8 (43.5) 412.3 97.5 Corporate — — — (90.2) $ 4,673.8 $ (477.6) $ 4,196.2 $ 1,076.7 Year ended December 31, 2019 Gross Intercompany Adjusted Successor Revenue Revenue Revenue (1) EBITDA (2) Solid waste Canada $ 1,174.8 $ (161.1) $ 1,013.7 $ 267.7 USA 1,603.4 (155.8) 1,447.6 431.0 Solid waste 2,778.2 (316.9) 2,461.3 698.7 Infrastructure and soil remediation 541.0 (6.0) 535.0 103.7 Liquid waste 386.7 (36.1) 350.6 79.5 Corporate — — — (56.2) $ 3,705.9 $ (359.0) $ 3,346.9 $ 825.7 Refer to Note 2 for additional details on the reclassifications outlined below: (1) Includes reclassification of $ 1.7 million from Liquid waste into Solid waste - Canada. (2) Includes reclassification of $ 3.8 million from Liquid waste and $24.1 million from Corporate into Solid waste Canada in the amount of $1.5 million and Solid waste USA in the amount of $26.4 million. Period ended December 31, 2018 (214 days) Gross Intercompany Adjusted Successor Revenue Revenue Revenue (1) EBITDA (2) Solid waste Canada $ 595.5 $ (75.3) $ 520.2 $ 142.6 USA 302.0 (8.5) 293.5 63.6 Solid waste 897.5 (83.8) 813.7 206.2 Infrastructure and soil remediation 262.7 (4.0) 258.7 56.4 Liquid waste 168.3 (15.9) 152.4 38.3 Corporate — — — (18.9) $ 1,328.5 $ (103.7) $ 1,224.8 $ 282.0 Refer to Note 2 for additional details on the reclassifications outlined below: (1) Includes reclassification of $ 0.6 million from Solid waste Canada into Liquid waste. (2) Includes reclassification of $ 4.9 million from Corporate to Solid waste USA and $ 0.5 million from Solid waste Canada to Liquid waste. Period ended May 31, 2018 (151 days) Gross Intercompany Adjusted Predecessor Revenue Revenue Revenue (1) EBITDA (2) Solid waste Canada $ 362.5 $ (40.3) $ 322.2 $ 80.1 USA 97.0 (3.1) 93.9 17.3 Solid waste 459.5 (43.4) 416.1 97.4 Infrastructure and soil remediation 136.2 (2.8) 133.4 23.4 Liquid waste 88.6 (10.3) 78.3 15.8 Corporate — — — (9.3) $ 684.3 $ (56.5) $ 627.8 $ 127.3 Refer to Note 2 for additional details on the reclassifications outlined below: (1) Includes reclassification of $ 0.6 million from Solid waste Canada into Liquid waste. (2) Includes reclassification of $0.6 million from Solid waste Canada into Liquid waste. Adjusted EBITDA reconciles to net loss for the periods presented as follows: Successor Predecessor December 31, December 31, December 31, May 31, 2018 2020 2019 2018 (214 days) (151 days) Total segment adjusted EBITDA $ 1,076.7 $ 825.7 $ 282.0 $ 127.3 Less: Depreciation and amortization 810.6 465.3 178.2 66.3 Amortization of intangible assets 427.0 334.1 127.5 40.9 Interest and other finance costs 597.6 532.2 242.2 127.4 (Gain) loss on foreign exchange (37.3) (48.9) 39.6 16.6 Loss (gain) on sale of property and equipment 4.6 1.2 4.7 (0.1) Mark-to-market loss on fuel hedges 1.8 1.0 2.8 — Mark-to-market loss on Purchase Contracts 449.2 — — — Share-based payments 37.9 14.5 2.0 18.8 Impairment 21.4 — — — Transaction costs 60.1 65.5 103.7 42.4 IPO transaction costs 46.2 — — — Other income — — — (3.2) Acquisition, rebranding and other integration costs 11.4 36.4 13.0 8.8 Unbilled revenue reversal — 31.6 — — Deferred purchase consideration 2.0 2.0 1.0 1.0 Income tax recovery (360.9) (157.5) (114.0) (26.9) Net loss $ (994.9) $ (451.7) $ (318.7) $ (164.7) As we continue to grow our business, we may be faced with new events or circumstances that are not indicative of our underlying business performance or that impact the ability to assess our operating performance. The definition of Adjusted EBITDA for the three months and year ended December 31, 2020 removes the impact of the mark-to-market loss on Purchase Contracts, IPO transaction costs and impairment and other charges, all of which did not exist in the prior periods.
Schedule of geographical information	Revenues from external customers and non-current assets, excluding deferred tax assets, can be analyzed according to the following geographic areas: Successor Predecessor Successor Non-current Revenue assets December 31, December 31, December 31, May 31, 2018 December 31, 2020 2019 2018 (214 days) (151 days) 2020 Canada $ 1,996.1 $ 1,760.8 $ 931.3 $ 533.9 $ 4,917.2 USA 2,200.1 1,586.1 293.5 $ 93.9 9,784.6 $ 4,196.2 $ 3,346.9 $ 1,224.8 $ 627.8 $ 14,701.8
Schedule of goodwill and intangible assets by segment	The carrying amount of goodwill and indefinite life intangible assets allocated to the operating segments for impairment testing purposes is as follows: December 31, 2020 December 31, 2019 Solid waste Canada $ 1,734.4 $ 1,707.6 USA 4,738.0 3,383.0 Infrastructure and soil remediation 240.0 237.8 Liquid waste 429.4 457.5 $ 7,141.8 $ 5,785.9

SHAREHOLDER'S CAPITAL (Tables)

SHAREHOLDER'S CAPITAL (Tables)	12 Months Ended
SHAREHOLDER'S CAPITAL (Tables)	Dec. 31, 2020
SHAREHOLDER'S CAPITAL
Summary of share issuances and cancellations	Common shares of Subordinated Multiple voting Preferred Total GFL Holdings voting shares shares shares Balance, December 31, 2019 180,794,203 180,794,203 — — — Exchange upon amalgamation of GFL Holdings — (180,794,203) 169,114,345 11,679,858 — Issued as partial consideration for acquisitions 3,092,118 — 3,092,118 — — Issued and fully paid during the year 171,060,581 — 142,106,047 383,106 28,571,428 Cancelled during the year (12,089) — (12,089) — — Balance, December 31, 2020 354,934,813 — 314,300,421 12,062,964 28,571,428
Summary of changes in contributed surplus	Balance, December 31, 2018 $ 2.0 Share-based compensation expense $ 14.5 Balance, December 31, 2019 $ 16.4 Share-based compensation expense 37.9 Balance, December 31, 2020 $ 54.3
Summary of number and weighted average exercise prices of share options	December 31, 2020 Weighted average Options exercise price (US$) Share options outstanding, December 31, 2019 — $ — Granted 19,643,184 28.05 Share options outstanding, December 31, 2020 19,643,184 $ 28.05 Vested share options, December 31, 2020 3,928,636 $ 19.00
Summary of fair value and assumptions used in option valuation model	Grant date share price (USD per option) $ 19.00 Grant date fair value (USD in millions) $ 23.6 Expected volatility (%) 23.51 % Expected dividend yield (%) nil Expected life (years) 4.2 Risk-free interest rate (%) 0.65 %
Summary of number and grant date fair value of RSUs and DSUs	December 31, 2020 December 31, 2020 Weighted Weighted average grant average grant RSUs date fair value (US$) DSUs date fair value (US$) Outstanding, December 31, 2019 — $ — — $ — Granted 1,524,358 19.95 18,248 19.92 Cancelled (1,699) 19.00 — — Outstanding, December 31, 2020 1,522,659 $ 19.95 18,248 $ 19.92 Expected to vest 1,482,660 $ 19.95 18,248 $ 19.92

SUPPLEMENTAL CASH FLOW INFORM_2

SUPPLEMENTAL CASH FLOW INFORMATION (Tables)	12 Months Ended
SUPPLEMENTAL CASH FLOW INFORMATION (Tables)	Dec. 31, 2020
SUPPLEMENTAL CASH FLOW INFORMATION
Schedule of supplemental cash flow information	Net change in non-cash working capital Successor Predecessor December 31, December 31, December 31, May 31, 2018 2020 2019 2018 (214 days) (151 days) Effects of changes in Accounts payable and accrued liabilities $ 83.4 $ 13.3 $ 13.2 $ 66.6 Trade and other receivables — net of allowance (77.7) (57.3) (38.5) (16.8) Prepaid expenses and other assets (0.5) (30.6) (8.2) (5.3) Income taxes payable — (0.3) 3.2 (0.2) $ 5.2 $ (74.9) $ (30.3) $ 44.3

FINANCIAL INSTRUMENTS AND RIS_2

FINANCIAL INSTRUMENTS AND RISK MANAGEMENT (Tables)	12 Months Ended
FINANCIAL INSTRUMENTS AND RISK MANAGEMENT (Tables)	Dec. 31, 2020
FINANCIAL INSTRUMENTS AND RISK MANAGEMENT
Summary of financial liabilities	December 31, 2020 Carrying Value Fair Value Level 1 Level 2 Level 3 Bonds $ 4,272.6 $ 4,454.3 $ — $ 4,454.3 $ — Amortizing Notes $ 123.4 126.8 — 126.8 — Total debt $ 4,396.0 $ 4,581.1 $ — $ 4,581.1 $ — December 31, 2019 Carrying Value Fair Value Level 1 Level 2 Level 3 Bonds $ 3,249.4 $ 3,092.3 $ — $ 3,092.3 $ — Total debt $ 3,249.4 $ 3,092.3 $ — $ 3,092.3 $ —
Breakdown of trade receivables aging	The following is a breakdown of the trade receivables aging. It does not include holdbacks or unbilled revenue as they are made up of amounts to be received at the end of specific long-term contracts. December 31, 2020 December 31, 2019 0-60 days $ 543.8 $ 394.9 61-90 days 47.3 61.2 91+ days 77.7 86.3 $ 668.8 $ 542.4
Schedule of currency swaps	Fixed Foreign Notional Fixed/Variable Fixed/Variable Exchange Rate Underlying Notes Amount ($US) Interest Rate Paid Interest Rate Received Paid Effective Date Expiration 9.875% 2021 Notes 30.6 9.890 % 9.875 % 1.4130 February 1, 2016 February 1, 2021 Term Loan 403.6 3-Month CDOR + 3.174 % 3-Month LIBOR + 2.750 % 1.2976 May 31, 2018 May 30, 2025 8.500% 2027 Notes 48.0 8.399 % 8.500 % 1.3355 April 23, 2019 May 1, 2027 8.500% 2027 Notes 300.0 8.419 % 8.500 % 1.3355 April 23, 2019 May 1, 2027 5.125% 2026 Secured Notes 500.0 5.725 % 5.125 % 1.3245 December 16, 2019 December 15, 2026 4.250% 2025 Secured Notes 500.0 4.805 % 4.250 % 1.4198 April 29, 2020 June 1, 2025 4.000% 2028 Notes 500.0 4.524 % 4.000 % 1.3112 November 23, 2020 August 1, 2028

EXPENSES BY NATURE (Tables)

EXPENSES BY NATURE (Tables)	12 Months Ended
EXPENSES BY NATURE (Tables)	Dec. 31, 2020
EXPENSES BY NATURE
Schedule of Expenses by Nature	GFL’s expenses by nature are as follows: Successor Predecessor December 31, December 31, December 31, May 31, 2018 2020 2019 2018 (214 days) (151 days) Employee benefits $ 1,308.1 $ 1,022.5 $ 383.7 $ 207.0 Transfer and disposal costs 1,002.0 873.5 314.6 161.3 Interest and other finance costs 597.6 532.2 242.2 127.4 Depreciation of property and equipment 810.6 465.3 178.2 66.3 Amortization of intangible assets 427.0 334.1 127.5 40.9 Other expense 408.1 286.5 116.9 61.9 Transaction costs 60.1 65.5 103.7 42.4 IPO transaction costs 46.2 — — — Acquisition, rebranding and other integration costs 11.4 36.4 13.0 8.8 Unbilled revenue reversal — 31.6 — — Maintenance and repairs 244.1 183.8 65.6 31.9 Fuel costs 159.0 155.9 64.8 35.2 (Gain) loss on foreign exchange (37.3) (48.9) 39.6 16.6 Share-based payments 37.9 14.5 2.0 18.8 Loss (gain) on sale of property and equipment 4.6 1.2 4.7 (0.1) Mark-to-market loss on Purchase Contracts 449.2 — — — Impairment and other charges 21.4 — — — Deferred purchase consideration 2.0 2.0 1.0 1.0 Total expenses by nature $ 5,552.0 $ 3,956.1 $ 1,657.5 $ 819.4

REPORTING ENTITY (Details)

REPORTING ENTITY (Details)	Dec. 31, 2020state
REPORTING ENTITY
Number of states	27

SUMMARY OF SIGNIFICANT ACCOUN_4

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Useful life of property, plant and equipment (Details)	12 Months Ended
	Dec. 31, 2020
Buildings and improvements \| Bottom of range
Disclosure of detailed information about property, plant and equipment [line items]
Useful life measured as period of time, property, plant and equipment	10 years
Buildings and improvements \| Top of range
Disclosure of detailed information about property, plant and equipment [line items]
Useful life measured as period of time, property, plant and equipment	30 years
Vehicles \| Bottom of range
Disclosure of detailed information about property, plant and equipment [line items]
Useful life measured as period of time, property, plant and equipment	10 years
Vehicles \| Top of range
Disclosure of detailed information about property, plant and equipment [line items]
Useful life measured as period of time, property, plant and equipment	20 years
Machinery and equipment \| Bottom of range
Disclosure of detailed information about property, plant and equipment [line items]
Useful life measured as period of time, property, plant and equipment	3 years
Machinery and equipment \| Top of range
Disclosure of detailed information about property, plant and equipment [line items]
Useful life measured as period of time, property, plant and equipment	20 years
Containers \| Bottom of range
Disclosure of detailed information about property, plant and equipment [line items]
Useful life measured as period of time, property, plant and equipment	5 years
Containers \| Top of range
Disclosure of detailed information about property, plant and equipment [line items]
Useful life measured as period of time, property, plant and equipment	10 years

SUMMARY OF SIGNIFICANT ACCOUN_5

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Useful Iife of intangible assets (Details)	12 Months Ended
	Dec. 31, 2020
Non-compete agreements
Disclosure of detailed information about intangible assets [line items]
Useful life measured as period of time, intangible assets other than goodwill	5 years
Customer lists and municipal contracts \| Bottom of range
Disclosure of detailed information about intangible assets [line items]
Useful life measured as period of time, intangible assets other than goodwill	5 years
Customer lists and municipal contracts \| Top of range
Disclosure of detailed information about intangible assets [line items]
Useful life measured as period of time, intangible assets other than goodwill	10 years

SUMMARY OF SIGNIFICANT ACCOUN_6

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Revenue recognition (Details)	12 Months Ended
	Dec. 31, 2020
Bottom of range
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue, performance obligation	3 years
Scheduled service for customers contracts	3 years
Top of range
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue, performance obligation	10 years
Scheduled service for customers contracts	5 years

SUMMARY OF SIGNIFICANT ACCOUN_7

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Share based payment (Details) - Option	Dec. 31, 2020	Dec. 31, 2019
Disclosure Of Other Equity Instruments In Share-Based Payment Arrangement [Line Items]
Number of share options issued in share-based payment arrangement	19,643,184	0
LTIP \| PSUs
Disclosure Of Other Equity Instruments In Share-Based Payment Arrangement [Line Items]
Number of share options issued in share-based payment arrangement	0

BUSINESS COMBINATIONS - Assets

BUSINESS COMBINATIONS - Assets Acquired and Liabilities Assumed (Details) - CAD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
2020 business combinations
Net assets acquired
Net working capital	$ (63.5)
Right-of-use assets	23.4
Other long-term assets	0.5
Property and equipment	1,483.4
Landfill	897.7
Intangible assets
Trade name, certificates of approval and other licenses	31
Customer lists and municipal contracts	449.2
Non-compete agreements	216.1
Goodwill	1,470.6
Assumption of lease obligations	(23.4)
Other long-term liabilities	28.3
Assumption of landfill closure and post-closure expenditures	(262.6)
Deferred tax liabilities	(123.4)
Net assets acquired	4,070.7
Consideration
Accrued contingent consideration	23.1
Share consideration issued	78.4
Cash	3,969.2
Consideration	$ 4,070.7
2019 business combinations
Net assets acquired
Net working capital		$ 17.7
Right-of-use assets		47.2
Property and equipment		258.1
Intangible assets
Trade name, certificates of approval and other licenses		117.3
Customer lists and municipal contracts		131.8
Non-compete agreements		40.3
Goodwill		257.4
Assumption of lease obligations		(0.4)
Other long-term liabilities		47.2
Assumption of landfill closure and post-closure expenditures		(4)
Deferred tax liabilities		(80.7)
Net assets acquired		737.5
Consideration
Accrued contingent consideration		16.2
Cash		721.3
Consideration		$ 737.5

BUSINESS COMBINATIONS - Additio

BUSINESS COMBINATIONS - Additional Information (Details)	5 Months Ended	7 Months Ended	12 Months Ended
BUSINESS COMBINATIONS - Additional Information (Details)	May 31, 2018CAD ($)	Dec. 31, 2018CAD ($)	Dec. 31, 2020CAD ($)item	Dec. 31, 2019CAD ($)item
Disclosure of detailed information about business combination [line items]
Number of solid waste management business acquired \| item			15	19
Number of liquid waste management business acquired \| item			7	13
Number of infrastructure business acquired \| item				1
Consideration paid	$ 0	$ 0	$ 31,100,000	$ 8,600,000
Pro-forma revenue			5,116,600,000
Pro-forma net loss before taxes			985,500,000
Depreciation expense due to ARO obligation			231,700,000
Amortization related to the ARO calculation			231,700,000
Revenue	627,800,000	1,224,800,000	4,196,200,000	3,346,900,000
Net loss	$ (164,700,000)	$ (318,700,000)	(994,900,000)	(451,700,000)
Cash in escrow			0	0
2020 business combinations
Disclosure of detailed information about business combination [line items]
Goodwill expected to be deductible for tax purposes			346,300,000
Revenue			634,400,000
Net loss			33,900,000
2019 business combinations
Disclosure of detailed information about business combination [line items]
Consideration paid			$ 31,100,000
Goodwill expected to be deductible for tax purposes				4,200,000
2018 business combinations
Disclosure of detailed information about business combination [line items]
Consideration paid				$ 8,600,000

TRADE AND OTHER RECEIVABLES (De

TRADE AND OTHER RECEIVABLES (Details) - CAD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
TRADE AND OTHER RECEIVABLES
Trade	$ 668.8	$ 542.4
Holdbacks	80.9	64.6
Unbilled revenue	129.7	113.9
Expected credit loss	(12.1)	(7.5)
Trade and other receivables, net of allowance	$ 867.3	$ 713.4

PREPAID EXPENSES AND INVENTOR_2

PREPAID EXPENSES AND INVENTORY (Details) - CAD ($) $ in Millions	Jul. 25, 2015	May 31, 2018	Dec. 31, 2018	Dec. 31, 2020	Dec. 31, 2019
PREPAID EXPENSES AND INVENTORY
Prepaid expenses and other assets				$ 76.3	$ 81.6
Vehicle parts, supplies and inventory				57.4	50.5
Prepaid expenses and other assets				133.7	132.1
Paid into escrow	$ 10
Key management arrangement		$ 1	$ 1	2	$ 2
Impairment charge				14.2
Inventory write-down				11.4
Write down of closure costs and cost to dispose of inventory				2.3
Decrease through write-off				$ 7.2

PROPERTY AND EQUIPMENT (Details

PROPERTY AND EQUIPMENT (Details) - CAD ($) $ in Millions	5 Months Ended	7 Months Ended	12 Months Ended
PROPERTY AND EQUIPMENT (Details) - CAD ($) $ in Millions	May 31, 2018	Dec. 31, 2018	Dec. 31, 2020	Dec. 31, 2019
Changes in property, plant and equipment [abstract]
Depreciation of property and equipment	$ 66.3	$ 178.2	$ 810.6	$ 465.3
Reconciliation of changes in right-of-use assets [roll forward]
Beginning balance			140.2
Changes in right-of-use assets [abstract]
Ending balance			149.3	140.2
Reconciliation of changes in property, plant and equipment and right-of-use assets [roll forward]
Beginning balance			2,850.1
Changes in property, plant and equipment and right-of-use assets [Abstract]
Ending balance			5,074.8	2,850.1
Depreciation expense due to ARO obligation			231.7
Landfill closure and post-closure obligations
Changes in property, plant and equipment and right-of-use assets [Abstract]
Increase to landfill closure and post-closure obligations due to business combinations			231.7
Selling, general and administrative expenses
Changes in property, plant and equipment [abstract]
Depreciation of property and equipment	3.2	6.1	25.5	23.1
Cost Of Sales
Changes in property, plant and equipment [abstract]
Depreciation of property and equipment	$ 63.1	172.1	785.1	442.3
Cost
Changes in property, plant and equipment [abstract]
Additions			555.3
Reconciliation of changes in right-of-use assets [roll forward]
Beginning balance			161.5	0
Changes in right-of-use assets [abstract]
IFRS 16 transition impact				103.8
Additions			40.7	26.7
Acquisitions via business combinations			23.4	47.2
Disposals			(20.6)	(15.9)
Changes in foreign exchange			(1.5)	(0.3)
Ending balance		0	203.5	161.5
Reconciliation of changes in property, plant and equipment and right-of-use assets [roll forward]
Beginning balance			3,431.8	2,576.1
Changes in property, plant and equipment and right-of-use assets [Abstract]
IFRS 16 transition impact				103.8
Additions				563.3
Acquisitions via business combinations			2,404.5	305.3
Disposals			(56.2)	(45.8)
Changes in foreign exchange			(145.4)	(70.9)
Ending balance		2,576.1	6,190	3,431.8
Accumulated depreciation
Reconciliation of changes in right-of-use assets [roll forward]
Beginning balance			(21.3)	0
Changes in right-of-use assets [abstract]
Amortization			37.8	23.2
Disposals			(4.1)	(1.8)
Changes in foreign exchange			(0.8)	(0.1)
Ending balance		0	(54.2)	(21.3)
Reconciliation of changes in property, plant and equipment and right-of-use assets [roll forward]
Beginning balance			581.7	139.7
Changes in property, plant and equipment and right-of-use assets [Abstract]
Depreciation			578.9	465.3
Disposals			(19.8)	(17.9)
Changes in foreign exchange			(25.6)	(5.4)
Ending balance		139.7	1,115.2	581.7
Land, building and leaseholds
Reconciliation of changes in property, plant and equipment [abstract]
Beginning balance			587
Changes in property, plant and equipment [abstract]
Ending balance			1,188.3	587
Land, building and leaseholds \| Cost
Reconciliation of changes in property, plant and equipment [abstract]
Beginning balance			613.8	465.1
Changes in property, plant and equipment [abstract]
IFRS 16 transition impact				0
Additions			73.2	68.4
Acquisitions via business combinations			560	77.9
Disposals			(2.9)	(2.2)
Transfers			31	13.7
Changes in foreign exchange			28.8	9.1
Ending balance		465.1	1,246.3	613.8
Changes in property, plant and equipment and right-of-use assets [Abstract]
Transfers			31	13.7
Land, building and leaseholds \| Accumulated depreciation
Reconciliation of changes in property, plant and equipment [abstract]
Beginning balance			(26.8)	(6.6)
Changes in property, plant and equipment [abstract]
Depreciation of property and equipment			32.6	20.8
Disposals			0.2	0.3
Changes in foreign exchange			(1.2)	(0.3)
Ending balance		(6.6)	(58)	(26.8)
Landfills
Reconciliation of changes in property, plant and equipment [abstract]
Beginning balance			603.7
Changes in property, plant and equipment [abstract]
Ending balance			1,440.4	603.7
Landfills \| Cost
Reconciliation of changes in property, plant and equipment [abstract]
Beginning balance			765.9	681.8
Changes in property, plant and equipment [abstract]
IFRS 16 transition impact				0
Additions			92.6	81.3
Acquisitions via business combinations			897.7	4
Disposals			0	0
Transfers			5	21.9
Changes in foreign exchange			55.1	23.1
Ending balance		681.8	1,706.1	765.9
Changes in property, plant and equipment and right-of-use assets [Abstract]
Transfers			5	21.9
Landfills \| Accumulated depreciation
Reconciliation of changes in property, plant and equipment [abstract]
Beginning balance			(162.2)	(36.8)
Changes in property, plant and equipment [abstract]
Depreciation of property and equipment			111.9	126.9
Disposals			0	0
Changes in foreign exchange			(8.4)	(1.5)
Ending balance		(36.8)	(265.7)	(162.2)
Vehicles
Reconciliation of changes in property, plant and equipment [abstract]
Beginning balance			854.6
Changes in property, plant and equipment [abstract]
Ending balance			1,219.6	854.6
Vehicles \| Cost
Reconciliation of changes in property, plant and equipment [abstract]
Beginning balance			1,061.2	840.2
Changes in property, plant and equipment [abstract]
IFRS 16 transition impact				0
Additions			164.8	120.7
Acquisitions via business combinations			455	72.5
Disposals			(18.2)	(13.1)
Transfers			(0.3)	62.6
Changes in foreign exchange			31.1	21.7
Ending balance		840.2	1,631.4	1,061.2
Changes in property, plant and equipment and right-of-use assets [Abstract]
Transfers			(0.3)	62.6
Vehicles \| Accumulated depreciation
Reconciliation of changes in property, plant and equipment [abstract]
Beginning balance			(206.6)	(53.6)
Changes in property, plant and equipment [abstract]
Depreciation of property and equipment			224.7	164.5
Disposals			10.2	9.4
Changes in foreign exchange			(9.3)	(2.1)
Ending balance		(53.6)	(411.8)	(206.6)
Machinery and equipment
Reconciliation of changes in property, plant and equipment [abstract]
Beginning balance			391.3
Changes in property, plant and equipment [abstract]
Ending balance			685.8	391.3
Machinery and equipment \| Cost
Reconciliation of changes in property, plant and equipment [abstract]
Beginning balance			500.9	338.8
Changes in property, plant and equipment [abstract]
IFRS 16 transition impact				0
Additions			119.2	85.2
Acquisitions via business combinations			291.3	91.1
Disposals			(10.7)	(1.7)
Transfers			28	(6.5)
Changes in foreign exchange			16	6
Ending balance		338.8	912.7	500.9
Changes in property, plant and equipment and right-of-use assets [Abstract]
Transfers			28	(6.5)
Machinery and equipment \| Accumulated depreciation
Reconciliation of changes in property, plant and equipment [abstract]
Beginning balance			(109.6)	(30.3)
Changes in property, plant and equipment [abstract]
Depreciation of property and equipment			122.6	80.5
Disposals			2.2	0.7
Changes in foreign exchange			(3.1)	(0.5)
Ending balance		(30.3)	(226.9)	(109.6)
Assets under development
Reconciliation of changes in property, plant and equipment [abstract]
Beginning balance			121.5
Changes in property, plant and equipment [abstract]
Ending balance			83.3	121.5
Assets under development \| Cost
Reconciliation of changes in property, plant and equipment [abstract]
Beginning balance			121.5	81.9
Changes in property, plant and equipment [abstract]
IFRS 16 transition impact				0
Additions			21.3	134
Acquisitions via business combinations			5	0
Disposals			0	0
Transfers			(63.5)	(91.6)
Changes in foreign exchange			1	2.8
Ending balance		81.9	83.3	121.5
Changes in property, plant and equipment and right-of-use assets [Abstract]
Transfers			(63.5)	(91.6)
Assets under development \| Accumulated depreciation
Reconciliation of changes in property, plant and equipment [abstract]
Beginning balance			0	0
Changes in property, plant and equipment [abstract]
Depreciation of property and equipment			0	0
Disposals			0	0
Changes in foreign exchange			0	0
Ending balance		0	0	0
Containers
Reconciliation of changes in property, plant and equipment [abstract]
Beginning balance			151.8
Changes in property, plant and equipment [abstract]
Ending balance			308.1	151.8
Containers \| Cost
Reconciliation of changes in property, plant and equipment [abstract]
Beginning balance			207	168.3
Changes in property, plant and equipment [abstract]
IFRS 16 transition impact				0
Additions			43.5	47
Acquisitions via business combinations			172.1	12.6
Disposals			(3.8)	(12.9)
Transfers			(0.2)	(0.1)
Changes in foreign exchange			11.9	7.9
Ending balance		168.3	406.7	207
Changes in property, plant and equipment and right-of-use assets [Abstract]
Transfers			(0.2)	(0.1)
Containers \| Accumulated depreciation
Reconciliation of changes in property, plant and equipment [abstract]
Beginning balance			(55.2)	(12.4)
Changes in property, plant and equipment [abstract]
Depreciation of property and equipment			49.3	49.4
Disposals			3.1	5.7
Changes in foreign exchange			(2.8)	(0.9)
Ending balance		$ (12.4)	$ (98.6)	$ (55.2)

GOODWILL AND INTANGIBLE ASSET_3

GOODWILL AND INTANGIBLE ASSETS, NET - Carrying Values (Details) - CAD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
GOODWILL AND INTANGIBLE ASSETS, NET
Indefinite life	$ 641.4	$ 612.1
Definite life	2,452	2,235.9
Carrying amounts	$ 3,093.4	$ 2,848

GOODWILL AND INTANGIBLE ASSET_4

GOODWILL AND INTANGIBLE ASSETS, NET - Rollforward (Details) - CAD ($) $ in Millions	3 Months Ended	5 Months Ended	7 Months Ended	12 Months Ended
	Dec. 31, 2019	May 31, 2018	Dec. 31, 2018	Dec. 31, 2020	Dec. 31, 2019
Disclosure of reconciliation of changes in intangible assets and goodwill [abstract]
Intangible assets and goodwill at beginning of period				$ 8,021.8	$ 8,047.6
Acquisitions via business combinations					546.8
Amortization		$ 40.9	$ 127.5	427	334.1
Changes in foreign exchange					(176.5)
Goodwill adjustment					65.4
Intangible assets and goodwill at end of period	$ 8,021.8		8,047.6	9,593.8	8,021.8
Goodwill
Disclosure of reconciliation of changes in intangible assets and goodwill [abstract]
Intangible assets and goodwill at beginning of period				5,173.8	4,979.3
Acquisitions via business combinations					257.4
Changes in foreign exchange					(128.3)
Goodwill adjustment	65.4				65.4
Intangible assets and goodwill at end of period	5,173.8		4,979.3	6,500.4	5,173.8
Customer lists and municipal contracts
Disclosure of reconciliation of changes in intangible assets and goodwill [abstract]
Intangible assets and goodwill at beginning of period				2,017.5	2,337.6
Acquisitions via business combinations					131.8
Changes in foreign exchange					(43.3)
Goodwill adjustment					0
Intangible assets and goodwill at end of period	2,017.5		2,337.6	2,106.6	2,017.5
Trade name, C of A and other licenses
Disclosure of reconciliation of changes in intangible assets and goodwill [abstract]
Intangible assets and goodwill at beginning of period				690.8	580
Acquisitions via business combinations					117.3
Changes in foreign exchange					(1.7)
Goodwill adjustment					0
Intangible assets and goodwill at end of period	690.8		580	710.3	690.8
Non-compete agreements
Disclosure of reconciliation of changes in intangible assets and goodwill [abstract]
Intangible assets and goodwill at beginning of period				139.7	150.7
Acquisitions via business combinations					40.3
Changes in foreign exchange					(3.2)
Goodwill adjustment					0
Intangible assets and goodwill at end of period	139.7		150.7	276.5	139.7
Cost
Disclosure of reconciliation of changes in intangible assets and goodwill [abstract]
Intangible assets and goodwill at beginning of period				8,483.3
Acquisitions via business combinations				2,166.9
Changes in foreign exchange				(184.5)
Intangible assets and goodwill at end of period	8,483.3			10,465.7	8,483.3
Cost \| Goodwill
Disclosure of reconciliation of changes in intangible assets and goodwill [abstract]
Intangible assets and goodwill at beginning of period				5,173.8
Acquisitions via business combinations				1,470.6
Changes in foreign exchange				(144)
Intangible assets and goodwill at end of period	5,173.8			6,500.4	5,173.8
Cost \| Customer lists and municipal contracts
Disclosure of reconciliation of changes in intangible assets and goodwill [abstract]
Intangible assets and goodwill at beginning of period				2,426.1
Acquisitions via business combinations				449.2
Changes in foreign exchange				(30.7)
Intangible assets and goodwill at end of period	2,426.1			2,844.6	2,426.1
Cost \| Trade name, C of A and other licenses
Disclosure of reconciliation of changes in intangible assets and goodwill [abstract]
Intangible assets and goodwill at beginning of period				695.6
Acquisitions via business combinations				31
Changes in foreign exchange				(3.4)
Intangible assets and goodwill at end of period	695.6			723.2	695.6
Cost \| Non-compete agreements
Disclosure of reconciliation of changes in intangible assets and goodwill [abstract]
Intangible assets and goodwill at beginning of period				187.8
Acquisitions via business combinations				216.1
Changes in foreign exchange				(6.4)
Intangible assets and goodwill at end of period	187.8			397.5	187.8
Accumulated depreciation
Disclosure of reconciliation of changes in intangible assets and goodwill [abstract]
Intangible assets and goodwill at beginning of period				(461.5)	(128)
Amortization				427	334.1
Changes in foreign exchange				(16.6)	(0.6)
Intangible assets and goodwill at end of period	(461.5)		(128)	(871.9)	(461.5)
Accumulated depreciation \| Goodwill
Disclosure of reconciliation of changes in intangible assets and goodwill [abstract]
Intangible assets and goodwill at beginning of period				0	0
Amortization				0	0
Changes in foreign exchange				0	0
Intangible assets and goodwill at end of period	0		0	0	0
Accumulated depreciation \| Customer lists and municipal contracts
Disclosure of reconciliation of changes in intangible assets and goodwill [abstract]
Intangible assets and goodwill at beginning of period				(408.6)	(114.1)
Amortization				341.6	295
Changes in foreign exchange				(12.2)	(0.5)
Intangible assets and goodwill at end of period	(408.6)		(114.1)	(738)	(408.6)
Accumulated depreciation \| Trade name, C of A and other licenses
Disclosure of reconciliation of changes in intangible assets and goodwill [abstract]
Intangible assets and goodwill at beginning of period				(4.8)	0
Amortization				8.9	4.8
Changes in foreign exchange				(0.8)	0
Intangible assets and goodwill at end of period	(4.8)		0	(12.9)	(4.8)
Accumulated depreciation \| Non-compete agreements
Disclosure of reconciliation of changes in intangible assets and goodwill [abstract]
Intangible assets and goodwill at beginning of period				(48.1)	(13.9)
Amortization				76.5	34.3
Changes in foreign exchange				(3.6)	(0.1)
Intangible assets and goodwill at end of period	$ (48.1)		$ (13.9)	$ (121)	$ (48.1)

GOODWILL AND INTANGIBLE ASSET_5

GOODWILL AND INTANGIBLE ASSETS, NET - Additional Information (Details) - CAD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2018
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Goodwill adjustment		$ 65.4
Intangible assets and goodwill	$ 8,021.8	8,021.8	$ 9,593.8	$ 8,047.6
Terminal growth rate			3.00%
Accrued Liabilities
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Goodwill adjustment	8.3
Deferred income tax liabilities
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Goodwill adjustment	46.8
Goodwill
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Goodwill adjustment	65.4	65.4
Intangible assets and goodwill	5,173.8	5,173.8	$ 6,500.4	$ 4,979.3
Landfill closure and post-closure obligations
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Goodwill adjustment	5.9
Property, plant and equipment
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Goodwill adjustment	4.5
Accumulated impairment
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Intangible assets and goodwill	$ 0	$ 0	$ 0
Bottom of range
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Revenue growth rate			5.00%
Discount rate			5.60%
Top of range
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Revenue growth rate			6.40%
Discount rate			7.50%

LANDFILL CLOSURE AND POST-CLO_3

LANDFILL CLOSURE AND POST-CLOSURE OBLIGATIONS - Changes in Period (Details) - CAD ($) $ in Millions	5 Months Ended	7 Months Ended	12 Months Ended
	May 31, 2018	Dec. 31, 2018	Dec. 31, 2020	Dec. 31, 2019
Reconciliation of changes in other provisions [abstract]
Expenditures	$ (1.8)	$ (10.9)	$ (21.7)	$ (15.3)
Landfill closure and post-closure obligations
Reconciliation of changes in other provisions [abstract]
Beginning balance			236.6	162.8
Acquisitions via business combinations			262.6	4
Adjustment related to prior year acquisitions			0	5.9
Provisions			266	78.7
Accretion			6.9	6.1
Expenditures			(21.7)	(15.3)
Changes in foreign exchange			(14.8)	(5.6)
Ending balance		$ 162.8	735.6	236.6
Less: Current portion			(55.3)	(25.6)
Noncurrent portion			$ 680.3	$ 211

LANDFILL CLOSURE AND POST-CLO_4

LANDFILL CLOSURE AND POST-CLOSURE OBLIGATIONS - Obligation Maturities (Details) - Landfill closure and post-closure obligations - CAD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure of other provisions [line items]
Landfill closure and post-closure obligations	$ 735.6	$ 236.6	$ 162.8
Less than 1 year
Disclosure of other provisions [line items]
Landfill closure and post-closure obligations	55.3
Between 1-2 years
Disclosure of other provisions [line items]
Landfill closure and post-closure obligations	38
Between 2-5 years
Disclosure of other provisions [line items]
Landfill closure and post-closure obligations	83.5
Over 5 years
Disclosure of other provisions [line items]
Landfill closure and post-closure obligations	$ 558.8

LANDFILL CLOSURE AND POST-CLO_5

LANDFILL CLOSURE AND POST-CLOSURE OBLIGATIONS - Additional Information (Details) $ in Millions	Dec. 31, 2020CAD ($)	Dec. 31, 2019CAD ($)
Disclosure of other provisions [line items]
Future landfill post-closure assets	$ 19.3	$ 17.7
Landfill closure and post-closure obligations
Disclosure of other provisions [line items]
Increase to landfill closure and post-closure obligations due to business combinations	$ 231.7
Discount rate \| CANADA \| Landfill closure and post-closure obligations
Disclosure of other provisions [line items]
Significant unobservable input, liabilities	1.21	1.76
Discount rate \| UNITED STATES \| Landfill closure and post-closure obligations
Disclosure of other provisions [line items]
Significant unobservable input, liabilities	1.65	2.39
Inflation rate \| CANADA \| Landfill closure and post-closure obligations
Disclosure of other provisions [line items]
Significant unobservable input, liabilities	1.60	2
Inflation rate \| UNITED STATES \| Landfill closure and post-closure obligations
Disclosure of other provisions [line items]
Significant unobservable input, liabilities	1.74	1.52

LONG-TERM DEBT - Summary of Deb

LONG-TERM DEBT - Summary of Debt (Details) $ in Millions, $ in Millions	Dec. 31, 2020CAD ($)	Dec. 31, 2020USD ($)	Dec. 21, 2020	Dec. 31, 2019CAD ($)	Dec. 16, 2019	Apr. 17, 2019	Dec. 31, 2018CAD ($)
Disclosure of detailed information about borrowings [line items]
Borrowings, interest rate					7.00%
Borrowings	$ 6,166.1			$ 7,625.1			$ 6,288.7
Current portion of long-term debt	(4.6)			(64.4)
Long-term debt	$ 6,161.5			7,560.7
Bottom of range
Disclosure of detailed information about borrowings [line items]
Borrowings, interest rate	3.02%	3.02%
Top of range
Disclosure of detailed information about borrowings [line items]
Borrowings, interest rate	4.37%	4.37%
Cost
Disclosure of detailed information about borrowings [line items]
Borrowings	$ 6,107.6			7,675.7
Fair value adjustment, discount and premium on bonds
Disclosure of detailed information about borrowings [line items]
Borrowings	(5.4)			(30.1)
Net derivative instruments
Disclosure of detailed information about borrowings [line items]
Borrowings	122.3			31.1
Deferred finance costs
Disclosure of detailed information about borrowings [line items]
Borrowings	(58.4)			(51.6)
Revolving credit facility \| Cost
Disclosure of detailed information about borrowings [line items]
Borrowings	148.8
Term loan facility
Disclosure of detailed information about borrowings [line items]
Borrowings		$ 1,312.9
Term loan facility \| Cost
Disclosure of detailed information about borrowings [line items]
Borrowings	$ 1,671.6			3,351.2
5.625% USD senior unsecured notes ("5.625% 2022 Notes") \| Cost
Disclosure of detailed information about borrowings [line items]
Borrowings, interest rate	5.625%	5.625%
Borrowings				454.6
5.375% USD senior unsecured notes ("5.375% 2023 Notes") \| Cost
Disclosure of detailed information about borrowings [line items]
Borrowings, interest rate	5.375%	5.375%
Borrowings				519.5
4.250% USD senior secured notes ("4.250% 2025 Secured Notes") \| Cost
Disclosure of detailed information about borrowings [line items]
Borrowings, interest rate	4.25%	4.25%
Borrowings	$ 636.6
3.750% USD senior secured notes ("3.750%% 2025 Secured Notes") \| Cost
Disclosure of detailed information about borrowings [line items]
Borrowings, interest rate	3.75%	3.75%
Borrowings	$ 954.9
7.000% USD senior unsecured notes ("7.000% 2026 Notes")
Disclosure of detailed information about borrowings [line items]
Borrowings, interest rate					7.00%
7.000% USD senior unsecured notes ("7.000% 2026 Notes") \| Cost
Disclosure of detailed information about borrowings [line items]
Borrowings, interest rate	7.00%	7.00%
Borrowings				876.7
5.125% USD senior secured notes ("5.125% 2026 Secured Notes")
Disclosure of detailed information about borrowings [line items]
Borrowings, interest rate					5.125%
5.125% USD senior secured notes ("5.125% 2026 Secured Notes") \| Cost
Disclosure of detailed information about borrowings [line items]
Borrowings, interest rate	5.125%	5.125%
Borrowings	$ 636.6			649.4
8.500% USD senior unsecured notes, ("8.500% 2027 Notes")
Disclosure of detailed information about borrowings [line items]
Borrowings, interest rate						8.50%
8.500% USD senior unsecured notes, ("8.500% 2027 Notes") \| Cost
Disclosure of detailed information about borrowings [line items]
Borrowings, interest rate	8.50%	8.50%
Borrowings	$ 458.4			779.3
4.000% senior unsecured notes, ("4.000% 2028 Notes") \| Cost
Disclosure of detailed information about borrowings [line items]
Borrowings, interest rate	4.00%	4.00%
Borrowings	$ 636.6
3.500% USD senior secured notes ("3.500% 2028 Secured Notes") \| Cost
Disclosure of detailed information about borrowings [line items]
Borrowings, interest rate	3.50%	3.50%	3.50%
Borrowings	$ 954.9
11.000% Paid in Kind notes ("PIK Notes"), semi-annual interest commencing December 1, 2018, principal maturing on May 31, 2028 \| Cost
Disclosure of detailed information about borrowings [line items]
Borrowings, interest rate	11.00%	11.00%
Borrowings				1,008
Promissory notes \| Cost
Disclosure of detailed information about borrowings [line items]
Borrowings				27.5
Equipment loans and other, at interest rates ranging from 3.02% to 4.37% \| Cost
Disclosure of detailed information about borrowings [line items]
Borrowings	$ 9.2			$ 9.5

LONG-TERM DEBT - Additional Inf

LONG-TERM DEBT - Additional Information (Details) $ / shares in Units, $ in Millions, $ in Millions	Feb. 01, 2021CAD ($)	Feb. 01, 2021USD ($)	Dec. 31, 2020CAD ($)	Dec. 31, 2020USD ($)	Dec. 21, 2020USD ($)	Nov. 23, 2020CAD ($)	Nov. 23, 2020USD ($)	Mar. 05, 2020CAD ($)	Mar. 05, 2020USD ($)$ / shares	May 31, 2018CAD ($)	Dec. 31, 2018CAD ($)	Dec. 31, 2020CAD ($)	Dec. 31, 2019CAD ($)	Dec. 31, 2020USD ($)	Dec. 20, 2020	Nov. 24, 2020	Dec. 16, 2019USD ($)	Apr. 17, 2019USD ($)
Disclosure of detailed information about borrowings [line items]
Borrowings			$ 6,166.1								$ 6,288.7	$ 6,166.1	$ 7,625.1
Borrowings, interest rate																	7.00%
Total net funded debt to adjusted EBITDA ratio			8									8		8
Net payment as a result of termination of original and offset swaps	$ 3.8		$ 31.9
Borrowings repaid		$ 30.6		$ 469.4
Accelerated interest payments												$ 4.4
Loss on extinguishment												168.7
Interest rate (as percent)																	7.00%
Fair market value price per share \| $ / shares									$ 19
Maximum amount available under combined committed letter of credit facility			240									240
Proceeds from issuing shares and borrowings								$ 29
Letters Of Credit Outstanding			$ 133.8									133.8	104.3
Interest expense on letters of credit outstanding										$ 0.6	$ 0.6	$ 3.8	2.8
Bottom of range
Disclosure of detailed information about borrowings [line items]
Borrowings, interest rate			3.02%									3.02%		3.02%
Interest rate (as percent)			3.02%									3.02%		3.02%
Top of range
Disclosure of detailed information about borrowings [line items]
Borrowings, interest rate			4.37%									4.37%		4.37%
Interest rate (as percent)			4.37%									4.37%		4.37%
Floating \| Bottom of range
Disclosure of detailed information about borrowings [line items]
Borrowings, interest rate			0.75%									0.75%		0.75%
Interest rate (as percent)			0.75%									0.75%		0.75%
Floating \| Top of range
Disclosure of detailed information about borrowings [line items]
Borrowings, interest rate			2.75%									2.75%		2.75%
Interest rate (as percent)			2.75%									2.75%		2.75%
Cost
Disclosure of detailed information about borrowings [line items]
Borrowings			$ 6,107.6									$ 6,107.6	7,675.7
Loss on extinguishment								73.8
Write off of deferred financing costs								17.4
Revolving credit facility
Disclosure of detailed information about borrowings [line items]
Non-current debt instruments issued			$ 628									$ 628
Percent of borrowings utilized			35.00%									35.00%		35.00%
Applicable margin above Bankers Acceptance or Libor (as a percent)																2.25%
Reduction in applicable margin above Bankers Acceptance or Libor (as a percent)																50.00%
Borrowings repaid								392.9
Revolving credit facility \| Cost
Disclosure of detailed information about borrowings [line items]
Borrowings			$ 148.8									$ 148.8
Swingline facility
Disclosure of detailed information about borrowings [line items]
Non-current debt instruments issued														$ 40
Borrowings			148.8									148.8	0
Term loan facility
Disclosure of detailed information about borrowings [line items]
Borrowings														$ 1,312.9
Borrowings repaid									$ 523
Term loan facility \| LIBOR
Disclosure of detailed information about borrowings [line items]
Floor Interest rate (as a percent)					0.50%										1.00%
Term loan facility \| Cost
Disclosure of detailed information about borrowings [line items]
Borrowings			$ 1,671.6									$ 1,671.6	3,351.2
Borrowings repaid					$ 744.3
Term loan facility \| Cost \| Fixed
Disclosure of detailed information about borrowings [line items]
Borrowings, interest rate			2.00%									2.00%		2.00%
Interest rate (as percent)			2.00%									2.00%		2.00%
Term loan facility \| Cost \| Floating
Disclosure of detailed information about borrowings [line items]
Borrowings, interest rate			3.00%									3.00%		3.00%
Interest rate (as percent)			3.00%									3.00%		3.00%
5.625% USD senior unsecured notes ("5.625% 2022 Notes") \| Cost
Disclosure of detailed information about borrowings [line items]
Borrowings													454.6
Borrowings, interest rate			5.625%									5.625%		5.625%
Outstanding aggregate principal amount									350
Interest rate (as percent)			5.625%									5.625%		5.625%
5.375% USD senior unsecured notes ("5.375% 2023 Notes") \| Cost
Disclosure of detailed information about borrowings [line items]
Borrowings													519.5
Borrowings, interest rate			5.375%									5.375%		5.375%
Outstanding aggregate principal amount									400
Interest rate (as percent)			5.375%									5.375%		5.375%
3.750% USD senior secured notes ("3.750%% 2025 Secured Notes") \| Cost
Disclosure of detailed information about borrowings [line items]
Borrowings			$ 954.9									$ 954.9
Borrowings, interest rate			3.75%									3.75%		3.75%
Interest rate (as percent)			3.75%									3.75%		3.75%
7.000% USD senior unsecured notes ("7.000% 2026 Notes")
Disclosure of detailed information about borrowings [line items]
Borrowings, interest rate																	7.00%
Net proceeds used to settle the debt derivatives						$ 6.9
Loss on extinguishment						35.5
Write off of deferred financing costs						$ 6.6
Notional amount														$ 400			$ 275
Interest rate (as percent)																	7.00%
7.000% USD senior unsecured notes ("7.000% 2026 Notes") \| Cost
Disclosure of detailed information about borrowings [line items]
Borrowings													876.7
Borrowings, interest rate			7.00%									7.00%		7.00%
Outstanding aggregate principal amount									270
Interest rate (as percent)			7.00%									7.00%		7.00%
5.125% USD senior secured notes ("5.125% 2026 Secured Notes")
Disclosure of detailed information about borrowings [line items]
Borrowings, interest rate																	5.125%
Notional amount																	$ 500
Interest rate (as percent)																	5.125%
5.125% USD senior secured notes ("5.125% 2026 Secured Notes") \| Cost
Disclosure of detailed information about borrowings [line items]
Borrowings			$ 636.6									$ 636.6	649.4
Borrowings, interest rate			5.125%									5.125%		5.125%
Interest rate (as percent)			5.125%									5.125%		5.125%
8.500% USD senior unsecured notes, ("8.500% 2027 Notes")
Disclosure of detailed information about borrowings [line items]
Borrowings, interest rate																		8.50%
Notional amount																		$ 600
Interest rate (as percent)																		8.50%
8.500% USD senior unsecured notes, ("8.500% 2027 Notes") \| Cost
Disclosure of detailed information about borrowings [line items]
Borrowings			$ 458.4									$ 458.4	779.3
Borrowings, interest rate			8.50%									8.50%		8.50%
Outstanding aggregate principal amount									$ 240
Interest rate (as percent)			8.50%									8.50%		8.50%
4.250% USD senior secured notes ("4.250% 2025 Secured Notes") \| Cost
Disclosure of detailed information about borrowings [line items]
Borrowings			$ 636.6									$ 636.6
Borrowings, interest rate			4.25%									4.25%		4.25%
Interest rate (as percent)			4.25%									4.25%		4.25%
4.000% senior unsecured notes, ("4.000% 2028 Notes") \| Cost
Disclosure of detailed information about borrowings [line items]
Borrowings			$ 636.6									$ 636.6
Borrowings, interest rate			4.00%									4.00%		4.00%
Interest rate (as percent)			4.00%									4.00%		4.00%
Redemption amount							$ 405
3.500% USD senior secured notes ("3.500% 2028 Secured Notes") \| Cost
Disclosure of detailed information about borrowings [line items]
Borrowings			$ 954.9									$ 954.9
Borrowings, interest rate			3.50%		3.50%							3.50%		3.50%
Net proceeds used to settle the debt derivatives					$ 744.3
Interest rate (as percent)			3.50%		3.50%							3.50%		3.50%
11.000% Paid in Kind notes ("PIK Notes"), semi-annual interest commencing December 1, 2018, principal maturing on May 31, 2028
Disclosure of detailed information about borrowings [line items]
Loss on extinguishment								(59.4)
Redemption amount								$ 1,049.9
11.000% Paid in Kind notes ("PIK Notes"), semi-annual interest commencing December 1, 2018, principal maturing on May 31, 2028 \| Cost
Disclosure of detailed information about borrowings [line items]
Borrowings													$ 1,008
Borrowings, interest rate			11.00%									11.00%		11.00%
Interest rate (as percent)			11.00%									11.00%		11.00%

LONG-TERM DEBT - Changes in Lon

LONG-TERM DEBT - Changes in Long-Term Debt (Details) - CAD ($) $ in Millions	5 Months Ended	7 Months Ended	12 Months Ended
	May 31, 2018	Dec. 31, 2018	Dec. 31, 2020	Dec. 31, 2019
Borrowings [Roll Forward]
Balance, beginning of period			$ 7,625.1	$ 6,288.7
Cash flows
Issuance of long-term debt	$ 2,205.4	$ 3,559.4	4,667.9	3,143.8
Repayment of long-term debt	(2,117.4)	(72.2)	(6,200.3)	(1,569.9)
Payment of financing costs	$ (42.4)	(63.6)	(41)	(20.7)
Non-cash changes
Reclassification of finance leases			0	(64.4)
PIK note exchanged for common shares			0	(61.1)
Assumed via business combinations			0	0.4
Accrued interest and other non-cash changes			125.6	153.4
Revaluation of foreign exchange			(129.7)	(160.9)
Fair value movements on cash flow hedges			118.5	(84.2)
Balance, end of period		$ 6,288.7	$ 6,166.1	$ 7,625.1

LONG-TERM DEBT - Maturity (Deta

LONG-TERM DEBT - Maturity (Details) - CAD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure of detailed information about borrowings [line items]
Borrowings	$ 6,166.1	$ 7,625.1	$ 6,288.7
Cost
Disclosure of detailed information about borrowings [line items]
Borrowings	6,107.6	$ 7,675.7
Cost \| Less than 1 year
Disclosure of detailed information about borrowings [line items]
Borrowings	4.6
Cost \| Between 1-2 years
Disclosure of detailed information about borrowings [line items]
Borrowings	0.5
Cost \| Later than two years and not later than three years [member]
Disclosure of detailed information about borrowings [line items]
Borrowings	0.2
Cost \| Later than three years and not later than four years [member]
Disclosure of detailed information about borrowings [line items]
Borrowings	3.7
Cost \| 2025
Disclosure of detailed information about borrowings [line items]
Borrowings	1,591.5
Cost \| Over 5 years
Disclosure of detailed information about borrowings [line items]
Borrowings	$ 4,507.1

INTEREST AND OTHER FINANCING _3

INTEREST AND OTHER FINANCING COSTS (Details) - CAD ($) $ in Millions	5 Months Ended	7 Months Ended	12 Months Ended
	May 31, 2018	Dec. 31, 2018	Dec. 31, 2020	Dec. 31, 2019
INTEREST AND OTHER FINANCING COSTS
Interest	$ 85.1	$ 149.5	$ 372.4	$ 472.7
Loss on extinguishment of debt			168.7
Amortization of deferred financing costs	4.1	23.3	36.1	9.7
Accretion of landfill closure and post-closure obligations	1.3	1.2	6.9	6.1
Other financing costs	36.9	68.2	13.5	43.7
Interest and other finance costs	$ 127.4	$ 242.2	$ 597.6	$ 532.2

LEASE OBLIGATIONS (Details)

LEASE OBLIGATIONS (Details) - CAD ($) $ in Millions	5 Months Ended	7 Months Ended	12 Months Ended
LEASE OBLIGATIONS (Details) - CAD ($) $ in Millions	May 31, 2018	Dec. 31, 2018	Dec. 31, 2020	Dec. 31, 2019
LEASE OBLIGATIONS
Average lease term			5 years
Secured lease obligations			$ 73.1	$ 58.7
Interest expense in connection with lease obligations	$ 0.3	$ 0.5	$ 10.9	$ 10.5

LEASE OBLIGATIONS - Lease Infor

LEASE OBLIGATIONS - Lease Information (Details) - CAD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
LEASE OBLIGATIONS
Lease obligations	$ 241	$ 246.4
Less: Interest	49.8	54.3
Lease obligations	191.2	192.1
Less: Current portion	37.5	33.2
Noncurrent portion of lease obligations	$ 153.7	$ 158.9

LEASE OBLIGATIONS - Future Mini

LEASE OBLIGATIONS - Future Minimum Lease Payments (Details) - CAD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Disclosure of maturity analysis of operating lease payments [line items]
Gross lease liabilities	$ 241	$ 246.4
Less than 1 year
Disclosure of maturity analysis of operating lease payments [line items]
Gross lease liabilities	39.8
Between 1-2 years
Disclosure of maturity analysis of operating lease payments [line items]
Gross lease liabilities	65.1
Later than two years and not later than three years [member]
Disclosure of maturity analysis of operating lease payments [line items]
Gross lease liabilities	28.2
Later than three years and not later than four years [member]
Disclosure of maturity analysis of operating lease payments [line items]
Gross lease liabilities	19.5
2025
Disclosure of maturity analysis of operating lease payments [line items]
Gross lease liabilities	26.5
Over 5 years
Disclosure of maturity analysis of operating lease payments [line items]
Gross lease liabilities	$ 61.9

TANGIBLE EQUITY UNITS - Additio

TANGIBLE EQUITY UNITS - Additional Information (Details) $ / shares in Units, $ in Millions	Jun. 15, 2020USD ($)	Mar. 05, 2020USD ($)	May 31, 2018CAD ($)	Dec. 31, 2018CAD ($)	Dec. 31, 2020CAD ($)itemshares	Dec. 31, 2019CAD ($)	Mar. 05, 2020CAD ($)	Mar. 05, 2020USD ($)$ / shares	Dec. 16, 2019
Disclosure of financial liabilities [line items]
TEU offering (in shares)		15,500,000
TEUs, rate							6.00%	6.00%
Gross proceeds							$ 1,040.7	$ 775,000,000
TEUs, stated amount (in usd per share) \| $ / shares								$ 50
Borrowings, interest rate									7.00%
Purchase contract, conversion ratio of contracts to subordinate voting shares (not more than)		2.6316
Purchase contract, conversion ratio of contracts to subordinate voting shares (not less than)		2.1930
Mark-to-market loss on Purchase Contracts			$ 0	$ 0	$ 449.2	$ 0
Threshold appreciation price (in usd per share) \| $ / shares								22.80
Reference price (in usd per share) \| $ / shares								$ 19
Number of consecutive trading days considered for calculation of Applicable Market Value \| item					20
Minimum subordinate voting share conversion of the TEUs (in shares) \| shares					33,991,500
Amortizing Notes
Disclosure of financial liabilities [line items]
Notional amount per note								$ 8.5143
Borrowings, interest rate							4.00%	4.00%
Amortizing notes, quarterly payment per note	$ 0.8333	$ 0.7500

TANGIBLE EQUITY UNITS - Compone

TANGIBLE EQUITY UNITS - Components of Each TEU (Details) $ / shares in Units, $ in Millions, $ in Millions	Dec. 31, 2020CAD ($)	Mar. 05, 2020CAD ($)$ / shares	Mar. 05, 2020USD ($)	Dec. 31, 2019CAD ($)
TANGIBLE EQUITY UNITS
Fair value price per TEU on issuance, Purchase Contracts (in dollars per unit) \| $ / shares		$ 55.71
Fair value price per TEU on issuance, Amortizing Notes (in dollars per unit) \| $ / shares		11.43
Fair value price per TEU on issuance (in dollars per share) \| $ / shares		$ 67.14
Gross proceeds, Purchase Contracts		$ 863.5
Gross proceeds, Amortizing Notes		177.2
Gross proceeds		1,040.7	$ 775
Issuance costs, Purchase Contracts		(28.1)
Issuance costs, Amortizing Notes		(5.7)
Issuance costs		(33.8)
Net proceeds on issuance, Purchase Contracts	$ 1,263.7	835.4		$ 0
Net proceeds on issuance, Amortizing Notes	123.4	171.5		0
Net proceeds on issuance	$ 1,387.1	$ 1,006.9		$ 0

TANGIBLE EQUITY UNITS - Carryin

TANGIBLE EQUITY UNITS - Carrying Value of TEUs (Details) - CAD ($) $ in Millions	Dec. 31, 2020	Mar. 05, 2020	Dec. 31, 2019
TANGIBLE EQUITY UNITS
Amortizing Notes	$ 123.4	$ 171.5	$ 0
Purchase Contracts	1,263.7	835.4	0
Net proceeds on issuance	1,387.1	$ 1,006.9	0
Current portion of tangible equity units	(59.2)		0
Tangible equity units	$ 1,327.9		$ 0

TANGIBLE EQUITY UNITS - Maturit

TANGIBLE EQUITY UNITS - Maturities of Amortizing Notes (Details) - CAD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure of detailed information about borrowings [line items]
Borrowings	$ 6,166.1	$ 7,625.1	$ 6,288.7
Amortizing Notes
Disclosure of detailed information about borrowings [line items]
Borrowings	133.2
Amortizing Notes \| Between 1-2 years
Disclosure of detailed information about borrowings [line items]
Borrowings	59.2
Amortizing Notes \| Later than two years and not later than three years [member]
Disclosure of detailed information about borrowings [line items]
Borrowings	59.2
Amortizing Notes \| Later than three years and not later than four years [member]
Disclosure of detailed information about borrowings [line items]
Borrowings	$ 14.8

INCOME TAXES - Reconciliation (

INCOME TAXES - Reconciliation (Details) - CAD ($) $ in Millions	5 Months Ended	7 Months Ended	12 Months Ended
	May 31, 2018	Dec. 31, 2018	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
INCOME TAXES
Loss before income taxes	$ (191.6)	$ (432.7)	$ (1,355.8)	$ (609.2)
Income tax recovery at the combined basic federal and provincial tax rate (-% in 2020; 26.5% in 2019; and 26.5% in 2018)	(50.8)	(114.7)	(359.3)	(161.4)
Decrease (increase) resulting from:
Permanent differences	3.7	5.3	12.5	8.8
Variance between combined Canadian tax rate and the tax rate applicable to U.S. earnings	0.9	1.3	(1.3)	1.9
(Recognition) non-recognition of deferred tax assets	11.9	(1.6)	(11.1)	(6.5)
Other	7.3	(4.3)	(1.7)	(0.3)
Income tax recovery	$ (26.9)	$ (114)	$ (360.9)	$ (157.5)
Applicable tax rate			26.50%	26.50%	26.50%

INCOME TAXES - Additional Infor

INCOME TAXES - Additional Information (Details) - CAD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
INCOME TAXES
Non-capital loss carry forwards	$ 1,754	$ 908.2

INCOME TAXES - Components of De

INCOME TAXES - Components of Deferred Tax Assets and Liabilities (Details) - CAD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Reconciliation Of Changes In Deferred Tax Assets [Abstract]
Beginning balance	$ 324.6	$ 195.2
Acquisitions via business combinations(1)		4.3
Foreign exchange		(8.3)
Recognized in equity	(22.3)
Recognized in net loss		133.4
Recognized in other comprehensive loss		0
Ending balance		324.6	$ 195.2
Reconciliation Of Changes In Deferred Tax Liabilities [Abstract]
Beginning balance	1,058.4	954.3
Acquisitions via business combinations(1)	262.1	131.8
Foreign exchange	(4.2)	(23)
Recognized in net loss	(122.4)	(27.2)
Recognized in other comprehensive loss	(5.1)	22.5
Ending balance	1,188.8	1,058.4	954.3
Net deferred income tax liabilities
Beginning balance	733.8	759.1
Acquisitions via business combinations(1)	123.4	127.5
Foreign exchange	(1.6)	(14.7)
Recognized in net loss	(362.2)	(160.6)
Recognized in other comprehensive loss	(5.1)	22.5
Ending balance	466	733.8	759.1
Net deferred income tax liabilities	733.8	759.1	759.1
Measurement period adjustments		0	46.8
Before deferred tax asset non-recognition
Reconciliation Of Changes In Deferred Tax Assets [Abstract]
Beginning balance	324.6	215.5
Acquisitions via business combinations(1)	138.7	4.3
Foreign exchange	(2.6)	(8)
Recognized in equity	22.3
Recognized in net loss	239.8	112.8
Recognized in other comprehensive loss		0
Ending balance	722.8	324.6	215.5
Deferred tax asset non-recognition
Reconciliation Of Changes In Deferred Tax Assets [Abstract]
Beginning balance	0	20.3
Acquisitions via business combinations(1)		0
Foreign exchange		(0.3)
Recognized in net loss		20.6
Recognized in other comprehensive loss		0
Ending balance		0	20.3
Accrued liabilities \| Before deferred tax asset non-recognition
Reconciliation Of Changes In Deferred Tax Assets [Abstract]
Beginning balance	2.5	5.4
Acquisitions via business combinations(1)	6.1	(0.1)
Foreign exchange	0	(0.3)
Recognized in net loss	1.5	(2.5)
Recognized in other comprehensive loss		0
Ending balance	10.1	2.5	5.4
Other
Reconciliation Of Changes In Deferred Tax Liabilities [Abstract]
Beginning balance	3.3	11.7
Acquisitions via business combinations(1)	8.9	0
Foreign exchange	2.2	0.5
Recognized in net loss	(115.7)	7.9
Recognized in other comprehensive loss		0
Ending balance	107.9	3.3	11.7
Other \| Before deferred tax asset non-recognition
Reconciliation Of Changes In Deferred Tax Assets [Abstract]
Beginning balance	50.8	28
Acquisitions via business combinations(1)	0	14.5
Foreign exchange	(0.4)	(2)
Recognized in equity	22.3
Recognized in net loss	33.3	10.3
Recognized in other comprehensive loss		0
Ending balance	106	50.8	28
Property, plant and equipment related temporary differences
Reconciliation Of Changes In Deferred Tax Liabilities [Abstract]
Beginning balance	383.4	309
Acquisitions via business combinations(1)	212.1	50.8
Foreign exchange	(2.2)	(11.8)
Recognized in net loss	77.9	35.4
Recognized in other comprehensive loss		0
Ending balance	671.2	383.4	309
Intangible assets related temporary differences
Reconciliation Of Changes In Deferred Tax Liabilities [Abstract]
Beginning balance	663.4	664.5
Acquisitions via business combinations(1)	41.1	81
Foreign exchange	(4.2)	(11.7)
Recognized in net loss	(84.6)	(70.4)
Recognized in other comprehensive loss		0
Ending balance	615.7	663.4	664.5
Decommissioning, restoration and rehabilitation costs related temporary differences \| Before deferred tax asset non-recognition
Reconciliation Of Changes In Deferred Tax Assets [Abstract]
Beginning balance	55	40
Acquisitions via business combinations(1)	64.2	2.2
Foreign exchange	(0.7)	(1.3)
Recognized in net loss	61.4	14.1
Recognized in other comprehensive loss		0
Ending balance	179.9	55	40
Unused tax losses \| Before deferred tax asset non-recognition
Reconciliation Of Changes In Deferred Tax Assets [Abstract]
Beginning balance	216.3	142.1
Acquisitions via business combinations(1)	68.4	(12.3)
Foreign exchange	(1.5)	(4.4)
Recognized in net loss	143.6	90.9
Recognized in other comprehensive loss		0
Ending balance	426.8	216.3	142.1
Derivatives related temporary differences
Reconciliation Of Changes In Deferred Tax Liabilities [Abstract]
Beginning balance	14.9	7.5
Acquisitions via business combinations(1)	0	0
Foreign exchange	0	0
Recognized in net loss	0	(0.1)
Recognized in other comprehensive loss	(5.1)	22.5
Ending balance	$ 9.8	$ 14.9	$ 7.5

LOSS PER SHARE (Details)

LOSS PER SHARE (Details) - CAD ($) $ / shares in Units, $ in Millions	5 Months Ended	7 Months Ended	12 Months Ended
	May 31, 2018	Dec. 31, 2018	Dec. 31, 2020	Dec. 31, 2019
LOSS PER SHARE
Net loss	$ (164.7)	$ (318.7)	$ (994.9)	$ (451.7)
Less amounts attributable to preferred shareholders			13.7
Adjusted net loss	$ (164.7)	$ (318.7)	$ (1,008.6)	$ (451.7)
Weighted average shares outstanding (in shares)	571,497,668	149,028,989	360,383,291	180,545,277
Weighted average number of shares on conversion of TEUs, and conversion of preferred shares	0	0	0	0
Basic (in dollars per share)	$ (0.29)	$ (2.14)	$ (2.80)	$ (2.50)
Minimum subordinate voting share conversion of the TEUs (in shares)			33,991,500

SALES AND OPERATING REVENUE (De

SALES AND OPERATING REVENUE (Details) - CAD ($) $ in Millions	5 Months Ended	7 Months Ended	12 Months Ended
	May 31, 2018	Dec. 31, 2018	Dec. 31, 2020	Dec. 31, 2019
Intercompany revenue
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	$ (56.5)	$ (103.7)	$ (477.6)	$ (359)
Amount of reclassifications or changes in presentation				45.9
Solid waste
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	460.5	899.5	3,682.9	2,782.4
Amount of reclassifications or changes in presentation	0.7
Solid waste \| Total collection
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	308.6	612.2	2,417.9	1,922.2
Solid waste \| Transfer
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	56.4	98.2	426.7	337.2
Amount of reclassifications or changes in presentation				25.7
Solid waste \| Landfill
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	37.2	77.8	348.4	255.5
Amount of reclassifications or changes in presentation	0.2	1		20.8
Solid waste \| Material recovery
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	18.2	28.2	263.3	95.5
Amount of reclassifications or changes in presentation	21.4	35.7		1.2
Solid waste \| Other
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	40.1	83.1	226.6	172
Amount of reclassifications or changes in presentation	20.5	36.7
Solid waste \| Residential \| Total collection
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	135.4	272.1	1,067.8	815.3
Amount of reclassifications or changes in presentation				0.3
Solid waste \| Commercial And Industrial [Member] \| Total collection
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	173.2	340.1	1,350.1	1,106.9
Infrastructure and soil remediation
Disclosure of disaggregation of revenue from contracts with customers [line items]
Amount of reclassifications or changes in presentation		0.1
Infrastructure and soil remediation \| Operating segments
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	135.1	260.7	535.1	538.3
Amount of reclassifications or changes in presentation				2.1
Liquid waste
Disclosure of disaggregation of revenue from contracts with customers [line items]
Amount of reclassifications or changes in presentation				3.8
Liquid waste \| Operating segments
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue	$ 88.7	168.3	$ 455.8	$ 385.2
Amount of reclassifications or changes in presentation		$ 1.8

SEGMENT REPORTING - Revenue by

SEGMENT REPORTING - Revenue by Segment (Details) - CAD ($) $ in Millions	5 Months Ended	7 Months Ended	12 Months Ended
	May 31, 2018	Dec. 31, 2018	Dec. 31, 2020	Dec. 31, 2019
Disclosure of operating segments [line items]
Revenue	$ 627.8	$ 1,224.8	$ 4,196.2	$ 3,346.9
Adjusted EBITDA	127.3	282	1,076.7	825.7
Capital Expenditures	52.3	160.3	428.3	457.8
Canada
Disclosure of operating segments [line items]
Revenue	533.9	931.3	1,996.1	1,760.8
USA
Disclosure of operating segments [line items]
Revenue	93.9	293.5	2,200.1	1,586.1
Solid waste
Disclosure of operating segments [line items]
Revenue	416.1	813.7	3,256.6	2,461.3
Amount of reclassifications or changes in presentation	0.7
Solid waste \| Canada
Disclosure of operating segments [line items]
Revenue	322.2	520.2	1,230.8	1,013.7
Amount of reclassifications or changes in presentation		0.6		1.7
Solid waste \| USA
Disclosure of operating segments [line items]
Revenue	93.9	293.5	2,025.8	1,447.6
Infrastructure and soil remediation
Disclosure of operating segments [line items]
Revenue	133.4	258.7	527.3	535
Amount of reclassifications or changes in presentation		0.1
Liquid waste
Disclosure of operating segments [line items]
Revenue	78.3	152.4	412.3	350.6
Amount of reclassifications or changes in presentation				3.8
Liquid waste \| Canada
Disclosure of operating segments [line items]
Amount of reclassifications or changes in presentation	0.6	0.5
Operating segments
Disclosure of operating segments [line items]
Revenue	684.3	1,328.5	4,673.8	3,705.9
Adjusted EBITDA	127.3	282	1,076.7	825.7
Operating segments \| Solid waste
Disclosure of operating segments [line items]
Revenue	459.5	897.5	3,679.8	2,778.2
Adjusted EBITDA	97.4	206.2	977.8	698.7
Operating segments \| Solid waste \| Canada
Disclosure of operating segments [line items]
Revenue	362.5	595.5	1,417.8	1,174.8
Adjusted EBITDA	80.1	142.6	338.6	267.7
Operating segments \| Solid waste \| USA
Disclosure of operating segments [line items]
Revenue	97	302	2,262	1,603.4
Adjusted EBITDA	17.3	63.6	639.2	431
Operating segments \| Infrastructure and soil remediation
Disclosure of operating segments [line items]
Revenue	136.2	262.7	538.2	541
Adjusted EBITDA	23.4	56.4	91.6	103.7
Amount of reclassifications or changes in presentation				2.1
Operating segments \| Liquid waste
Disclosure of operating segments [line items]
Revenue	88.6	168.3	455.8	386.7
Adjusted EBITDA	15.8	38.3	97.5	79.5
Amount of reclassifications or changes in presentation		1.8
Intercompany revenue
Disclosure of operating segments [line items]
Revenue	(56.5)	(103.7)	(477.6)	(359)
Amount of reclassifications or changes in presentation				45.9
Intercompany revenue \| Solid waste
Disclosure of operating segments [line items]
Revenue	(43.4)	(83.8)	(423.2)	(316.9)
Intercompany revenue \| Solid waste \| Canada
Disclosure of operating segments [line items]
Revenue	(40.3)	(75.3)	(187)	(161.1)
Intercompany revenue \| Solid waste \| USA
Disclosure of operating segments [line items]
Revenue	(3.1)	(8.5)	(236.2)	(155.8)
Intercompany revenue \| Infrastructure and soil remediation
Disclosure of operating segments [line items]
Revenue	(2.8)	(4)	(10.9)	(6)
Intercompany revenue \| Liquid waste
Disclosure of operating segments [line items]
Revenue	(10.3)	(15.9)	(43.5)	(36.1)
Corporate
Disclosure of operating segments [line items]
Revenue			0	0
Adjusted EBITDA	$ (9.3)	(18.9)	$ (90.2)	(56.2)
Corporate \| Canada
Disclosure of operating segments [line items]
Amount of reclassifications or changes in presentation				24.1
Corporate \| USA
Disclosure of operating segments [line items]
Amount of reclassifications or changes in presentation		$ 4.9
Corporate \| Solid waste \| Canada
Disclosure of operating segments [line items]
Amount of reclassifications or changes in presentation				1.5
Corporate \| Solid waste \| USA
Disclosure of operating segments [line items]
Amount of reclassifications or changes in presentation				$ 26.4

SEGMENT REPORTING - EBITDA Reco

SEGMENT REPORTING - EBITDA Reconciles to Net Loss (Details) - CAD ($) $ in Millions	5 Months Ended	7 Months Ended	12 Months Ended
	May 31, 2018	Dec. 31, 2018	Dec. 31, 2020	Dec. 31, 2019
SEGMENT REPORTING
Total segment adjusted EBITDA	$ 127.3	$ 282	$ 1,076.7	$ 825.7
Depreciation and amortization	66.3	178.2	810.6	465.3
Amortization of intangible assets	40.9	127.5	427	334.1
Interest and other finance costs	127.4	242.2	597.6	532.2
(Gain) loss on foreign exchange	16.6	39.6	(37.3)	(48.9)
Loss (gain) on sale of property and equipment	(0.1)	4.7	4.6	1.2
Mark-to-market loss on fuel hedges	0	2.8	1.8	1
Mark-to-market loss on Purchase Contracts	0	0	449.2	0
Share-based payments	18.8	2	37.9	14.5
Impairment	0	0	21.4	0
Expenses, by nature	819.4	1,657.5	5,552	3,956.1
Transaction costs	42.4	103.7	60.1	65.5
Other income	(3.2)	0	0	0
IPO transaction costs			46.2
Acquisition, rebranding and other integration costs	8.8	13	11.4	36.4
Unbilled revenue reversal			0	31.6
Deferred purchase consideration	1	1	2	2
Income tax recovery	(26.9)	(114)	(360.9)	(157.5)
Net loss	$ (164.7)	$ (318.7)	$ (994.9)	$ (451.7)

SEGMENT REPORTING - Geographica

SEGMENT REPORTING - Geographical Information (Details) - CAD ($) $ in Millions	5 Months Ended	7 Months Ended	12 Months Ended
	May 31, 2018	Dec. 31, 2018	Dec. 31, 2020	Dec. 31, 2019
Disclosure of geographical areas [line items]
Revenue	$ 627.8	$ 1,224.8	$ 4,196.2	$ 3,346.9
Non-current assets			14,701.8
Canada
Disclosure of geographical areas [line items]
Revenue	533.9	931.3	1,996.1	1,760.8
Non-current assets			4,917.2
USA
Disclosure of geographical areas [line items]
Revenue	$ 93.9	$ 293.5	2,200.1	$ 1,586.1
Non-current assets			$ 9,784.6

SEGMENT REPORTING - Goodwill an

SEGMENT REPORTING - Goodwill and Intangible Assets (Details) - CAD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Disclosure of operating segments [line items]
Goodwill and indefinite life intangible assets	$ 7,141.8	$ 5,785.9
Solid waste \| Canada
Disclosure of operating segments [line items]
Goodwill and indefinite life intangible assets	1,734.4	1,707.6
Solid waste \| USA
Disclosure of operating segments [line items]
Goodwill and indefinite life intangible assets	4,738	3,383
Infrastructure and soil remediation
Disclosure of operating segments [line items]
Goodwill and indefinite life intangible assets	240	237.8
Liquid waste
Disclosure of operating segments [line items]
Goodwill and indefinite life intangible assets	$ 429.4	$ 457.5

SHAREHOLDER'S CAPITAL (Details)

SHAREHOLDER'S CAPITAL (Details) $ / shares in Units, $ in Millions, $ in Millions	Oct. 01, 2020USD ($)$ / sharesshares	Mar. 05, 2020CAD ($)	Mar. 05, 2020USD ($)$ / sharesshares	Mar. 05, 2020CAD ($)	Dec. 31, 2020CAD ($)Vote	Dec. 31, 2020$ / sharesshares	Feb. 01, 2020$ / sharesshares	Jan. 01, 2020shares	Dec. 31, 2019shares
Disclosure of classes of share capital [line items]
Number of shares outstanding						354,934,813			180,794,203
Share issuance costs \| $					$ 60.7
IPO, stock price (in dollars per share) \| $ / shares			$ 19
Patrick Dovigi
Disclosure of classes of share capital [line items]
Minimum percentage of entity share capital held						2.00%
Preferred shares
Disclosure of classes of share capital [line items]
Proceeds from issuing shares \| $	$ 600
Shares issued, price per share (in dollars per share) \| $ / shares	$ 21
Number of shares issued (in shares)	28,571,428
Number of shares outstanding						28,571,428			0
Subordinated voting shares
Disclosure of classes of share capital [line items]
Votes per share \| Vote					1
Shares issued, price per share (in dollars per share) \| $ / shares						$ 25.20
Number of shares outstanding	24,226,190					314,300,421			0
Percent of issued and outstanding shares	7.20%
Percent of outstanding voting rights of shares	5.30%
Preferred shares, liquidation preference rate	7.00%
Accretion rate for optional redemption amount for a particular quarter in cash	6.00%
Shares exchanged, exchange ratio			20.363259
Number of shares issued as partial consideration for an acquisition (in shares)							1,035,787	2,056,331
Subordinated voting shares \| IPO
Disclosure of classes of share capital [line items]
Proceeds from issuing shares		$ 1,871.8	$ 1,393.9
Number of shares issued (in shares)			73,361,842
Share issuance costs		45.5	$ 33.9
Subordinated voting shares \| IPO at $19
Disclosure of classes of share capital [line items]
Number of shares issued (in shares)			704,800
Subordinated voting shares \| Ven Poole
Disclosure of classes of share capital [line items]
Number of shares issued (in shares)							73,947
IPO, stock price (in dollars per share) \| $ / shares							$ 19
Subordinated voting shares \| Shareholders
Disclosure of classes of share capital [line items]
Return of Capital \| $				$ 0.8
Proceeds from issuing shares \| $				$ 348.9
Number of shares issued (in shares)			17,694,685
Subordinated voting shares \| Certain Existing Shareholders [Member]
Disclosure of classes of share capital [line items]
Proceeds from issuing shares \| $		$ 1,064.6
Number of shares issued (in shares)			47,496,202
Class F
Disclosure of classes of share capital [line items]
Shares exchanged, exchange ratio			26.343032
Multiple voting shares
Disclosure of classes of share capital [line items]
Votes per share \| Vote					10
Number of shares outstanding						12,062,964			0

SHAREHOLDER'S CAPITAL - Share I

SHAREHOLDER'S CAPITAL - Share Issuances and Cancellations (Details) - shares	Dec. 02, 2020	Aug. 20, 2020	Dec. 31, 2020
Reconciliation of number of shares outstanding [abstract]
Number of shares outstanding at beginning of period			180,794,203
Changes in number of shares outstanding
Issued as partial consideration for acquisitions			3,092,118
Issued and fully paid during the year			171,060,581
Cancelled during the year			(12,089)
Number of shares outstanding at end of period			354,934,813
Common shares of GFL Holdings
Reconciliation of number of shares outstanding [abstract]
Number of shares outstanding at beginning of period			180,794,203
Changes in number of shares outstanding
Exchange upon amalgamation of GFL Holdings			(180,794,203)
Issued as partial consideration for acquisitions			0
Issued and fully paid during the year			0
Cancelled during the year			0
Number of shares outstanding at end of period			0
Subordinated voting shares
Reconciliation of number of shares outstanding [abstract]
Number of shares outstanding at beginning of period			0
Changes in number of shares outstanding
Exchange upon amalgamation of GFL Holdings			169,114,345
Issued as partial consideration for acquisitions			3,092,118
Issued and fully paid during the year			142,106,047
Cancelled during the year	944	11,145	(12,089)
Number of shares outstanding at end of period			314,300,421
Multiple voting shares
Reconciliation of number of shares outstanding [abstract]
Number of shares outstanding at beginning of period			0
Changes in number of shares outstanding
Exchange upon amalgamation of GFL Holdings			11,679,858
Issued as partial consideration for acquisitions			0
Issued and fully paid during the year			383,106
Cancelled during the year			0
Number of shares outstanding at end of period			12,062,964
Preferred shares
Reconciliation of number of shares outstanding [abstract]
Number of shares outstanding at beginning of period			0
Changes in number of shares outstanding
Exchange upon amalgamation of GFL Holdings			0
Issued as partial consideration for acquisitions			0
Issued and fully paid during the year			28,571,428
Cancelled during the year			0
Number of shares outstanding at end of period			28,571,428

SHAREHOLDER'S CAPITAL - Contrib

SHAREHOLDER'S CAPITAL - Contributed Surplus (Details) - CAD ($) $ in Millions	5 Months Ended	7 Months Ended	12 Months Ended
	May 31, 2018	Dec. 31, 2018	Dec. 31, 2020	Dec. 31, 2019
SHAREHOLDER'S CAPITAL
Contributed surplus at beginning of period			$ 16.4	$ 2
Share-based compensation expense	$ 18.8	$ 2	37.9	14.5
Contributed surplus at end of period		$ 2	$ 54.3	$ 16.4

SHAREHOLDER'S CAPITAL - Share-b

SHAREHOLDER'S CAPITAL - Share-based Payment Arrangements (Details) $ / shares in Units, $ in Millions	5 Months Ended	7 Months Ended	12 Months Ended
	May 31, 2018CAD ($)	Dec. 31, 2018CAD ($)	Dec. 31, 2020Option$ / sharesshares	Dec. 31, 2020Option$ / sharesshares	Dec. 31, 2020CAD ($)	Dec. 31, 2020USD ($)Option$ / sharesshares	Dec. 31, 2019CAD ($)	Mar. 05, 2020Option$ / sharesshares	Mar. 05, 2020Option$ / sharesshares	Dec. 31, 2019Option$ / shares
Disclosure of equity instruments in share-based payment arrangement [Line Items]
Number of share options outstanding in share-based payment arrangement \| Option			19,643,184	19,643,184		19,643,184				0
Weighted average exercise price of share options outstanding in share-based payment arrangement \| $ / shares			$ 28.05	$ 28.05		$ 28.05				$ 0
Number of subordinate voting shares reserved for issuance under share-based payment plans \| shares			32,636,339	32,636,339		32,636,339
Compensation expense related to share-based payment arrangements	$ 18.8	$ 2			$ 37.9		$ 14.5
IPO, stock price (in dollars per share) \| $ / shares								$ 19
Subordinated voting shares
Disclosure of equity instruments in share-based payment arrangement [Line Items]
Number of shares reserved for issuance as percent			10.00%
Legacy Option Shares \| Subordinated voting shares
Disclosure of equity instruments in share-based payment arrangement [Line Items]
Number of shares issued (in shares) \| shares								3,203,925	3,203,925
Share Options
Disclosure of equity instruments in share-based payment arrangement [Line Items]
Compensation expense related to share-based payment arrangements	$ 18.8	$ 2			30.5		$ 14.5
RSUs
Disclosure of equity instruments in share-based payment arrangement [Line Items]
Compensation expense related to share-based payment arrangements					6.9
Number of other equity instruments granted				1,524,358		1,524,358
Awards Vesting Percentage			33.30%
IPO, stock price (in dollars per share) \| $ / shares			$ 19	$ 19		$ 19
DSUs
Disclosure of equity instruments in share-based payment arrangement [Line Items]
Compensation expense related to share-based payment arrangements					0.5
Number of other equity instruments granted				18,248		18,248
IPO, stock price (in dollars per share) \| $ / shares			$ 19	$ 19		$ 19
Legacy Stock Option Plan
Disclosure of equity instruments in share-based payment arrangement [Line Items]
Number of share options outstanding in share-based payment arrangement \| Option			0	0		0		159,468,329	159,468,329
Weighted average exercise price of share options outstanding in share-based payment arrangement \| $ / shares									$ 1
Vesting Percentage			0.33%
Compensation expense related to share-based payment arrangements					8.2
LTIP
Disclosure of equity instruments in share-based payment arrangement [Line Items]
Compensation expense related to share-based payment arrangements					$ 22.3

SHAREHOLDER'S CAPITAL - Option

SHAREHOLDER'S CAPITAL - Option Activity (Details)	12 Months Ended
SHAREHOLDER'S CAPITAL - Option Activity (Details)	Dec. 31, 2020Option$ / shares
SHAREHOLDER'S CAPITAL
Number of share options outstanding at beginning of period	0
Number of share options granted	19,643,184
Number of share options exercised	0
Number of share options expired	0
Number of share options forfeited	0
Number of share options cancelled	0
Number of share options outstanding at end of period	19,643,184
Number of vested share options	3,928,636
Weighted average exercise price of share options outstanding at beginning of period (US$ per share) \| $ / shares	$ 0
Weighted average exercise price of share options granted (US$ per share) \| $ / shares	28.05
Weighted average exercise price of share options outstanding at end of period (US$ per share) \| $ / shares	28.05
Weighted average exercise price of vested share options (US$ per share) \| $ / shares	$ 19

SHAREHOLDER'S CAPITAL - Optio_2

SHAREHOLDER'S CAPITAL - Option Assumptions (Details) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2020USD ($)Y$ / shares
SHAREHOLDER'S CAPITAL
Grant date share price (USD per option) \| $ / shares	$ 19
Grant date fair value (USD in millions) \| $	$ 23.6
Expected volatility (%)	23.51%
Expected dividend yield (%)	0.00%
Expected life (years) \| Y	4.2
Risk-free interest rate (%)	0.65%

SHAREHOLDER'S CAPITAL - RSU and

SHAREHOLDER'S CAPITAL - RSU and DSU Activity (Details)	12 Months Ended
SHAREHOLDER'S CAPITAL - RSU and DSU Activity (Details)	Dec. 31, 2020$ / shares	Dec. 31, 2020Option$ / shares	Dec. 31, 2020$ / shares	Dec. 31, 2020USD ($)$ / shares	Mar. 05, 2020$ / shares
Disclosure Of Other Equity Instruments In Share-Based Payment Arrangement [Line Items]
IPO, stock price (in dollars per share) \| $ / shares					$ 19
RSUs
Disclosure Of Other Equity Instruments In Share-Based Payment Arrangement [Line Items]
Number of other equity instruments outstanding at beginning of period \| Option		0
Award Vesting Period	3 years
Number of other equity instruments granted		1,524,358		1,524,358
IPO, stock price (in dollars per share) \| $ / shares	$ 19	$ 19	$ 19	$ 19
Number of other equity instruments exercised \| Option		0
Number of other equity instruments expired \| Option		0
Number of other equity instruments forfeited \| Option		0
Number of other equity instruments cancelled \| $				(1,699)
Number of other equity instruments outstanding at end of period \| Option		1,522,659
Number of other equity instruments expected to vest \| Option		1,482,660
Weighted average exercise price of other equity instruments outstanding at beginning of period (US$ per share) \| $ / shares			0
Weighted average exercise price of other equity instruments granted (US$ per share) \| $ / shares			19.95
Weighted average exercise price of other equity instruments cancelled (US$ per share) \| $ / shares			19
Weighted average exercise price of other equity instruments outstanding at end of period (US$ per share) \| $ / shares			19.95
Weighted average exercise price of other equity instruments expected to vest (US$ per share) \| $ / shares	19.95	$ 19.95	19.95	$ 19.95
DSUs
Disclosure Of Other Equity Instruments In Share-Based Payment Arrangement [Line Items]
Number of other equity instruments outstanding at beginning of period \| Option		0
Number of other equity instruments granted		18,248		18,248
IPO, stock price (in dollars per share) \| $ / shares	19	$ 19	19	$ 19
Weighted average grant date fair value \| $ / shares	21.26	$ 21.26	21.26	21.26
Number of other equity instruments exercised \| Option		0
Number of other equity instruments expired \| Option		0
Number of other equity instruments forfeited \| Option		0
Number of other equity instruments cancelled \| Option		0
Number of other equity instruments outstanding at end of period \| Option		18,248
Number of other equity instruments expected to vest \| Option		18,248
Weighted average exercise price of other equity instruments outstanding at beginning of period (US$ per share) \| $ / shares			0
Weighted average exercise price of other equity instruments granted (US$ per share) \| $ / shares			19.92
Weighted average exercise price of other equity instruments outstanding at end of period (US$ per share) \| $ / shares			19.92
Weighted average exercise price of other equity instruments expected to vest (US$ per share) \| $ / shares	$ 19.92	$ 19.92	$ 19.92	$ 19.92

SUPPLEMENTAL CASH FLOW INFORM_3

SUPPLEMENTAL CASH FLOW INFORMATION (Details) - CAD ($) $ in Millions	5 Months Ended	7 Months Ended	12 Months Ended
	May 31, 2018	Dec. 31, 2018	Dec. 31, 2020	Dec. 31, 2019
Effects of changes in
Accounts payable and accrued liabilities	$ 66.6	$ 13.2	$ 83.4	$ 13.3
Trade and other receivables - net of allowance	(16.8)	(38.5)	(77.7)	(57.3)
Prepaid expenses and other assets	(5.3)	(8.2)	(0.5)	(30.6)
Income taxes payable	(0.2)	3.2	0	(0.3)
Changes in non-cash working capital items	$ 44.3	$ (30.3)	$ 5.2	$ (74.9)

FINANCIAL INSTRUMENTS AND RIS_3

FINANCIAL INSTRUMENTS AND RISK MANAGEMENT - Fair Value of Liabilities (Details) - Financial liabilities at amortised cost - CAD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Disclosure of financial liabilities [line items]
Financial liabilities	$ 4,396
Financial liabilities, at fair value	4,581.1
Bonds
Disclosure of financial liabilities [line items]
Financial liabilities	4,272.6	$ 3,249.4
Financial liabilities, at fair value	4,454.3	3,092.3
Amortizing Notes
Disclosure of financial liabilities [line items]
Financial liabilities	123.4
Financial liabilities, at fair value	126.8
Level 2
Disclosure of financial liabilities [line items]
Financial liabilities, at fair value	4,581.1
Level 2 \| Bonds
Disclosure of financial liabilities [line items]
Financial liabilities, at fair value	4,454.3	$ 3,092.3
Level 2 \| Amortizing Notes
Disclosure of financial liabilities [line items]
Financial liabilities, at fair value	$ 126.8

FINANCIAL INSTRUMENTS AND RIS_4

FINANCIAL INSTRUMENTS AND RISK MANAGEMENT - Trade Receivables Aging (Details) - Trade receivables - CAD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Disclosure of provision matrix [line items]
Financial assets	$ 668.8	$ 542.4
0-60 days
Disclosure of provision matrix [line items]
Financial assets	543.8	394.9
60-90 days
Disclosure of provision matrix [line items]
Financial assets	47.3	61.2
91+ days
Disclosure of provision matrix [line items]
Financial assets	$ 77.7	$ 86.3

FINANCIAL INSTRUMENTS AND RIS_5

FINANCIAL INSTRUMENTS AND RISK MANAGEMENT - Additional Information (Details) $ in Millions, $ in Millions	Nov. 23, 2020USD ($)	May 31, 2018CAD ($)	Dec. 31, 2018CAD ($)	Dec. 31, 2020CAD ($)	Dec. 31, 2019CAD ($)	Dec. 31, 2020CAD ($)	Dec. 31, 2020USD ($)	Dec. 21, 2020	Dec. 16, 2019USD ($)	Apr. 17, 2019USD ($)
Disclosure of financial liabilities [line items]
Borrowings, interest rate									7.00%
Borrowings			$ 6,288.7	$ 6,166.1	$ 7,625.1	$ 6,166.1
Fair value movements on cash flow hedges, net of tax		$ 3.8	(33.5)	1.8	61.2
Cost
Disclosure of financial liabilities [line items]
Borrowings				$ 6,107.6	7,675.7	$ 6,107.6
5.625% USD senior unsecured notes ("5.625% 2022 Notes") \| Cost
Disclosure of financial liabilities [line items]
Borrowings, interest rate				5.625%		5.625%	5.625%
Borrowings					454.6
5.375% USD senior unsecured notes ("5.375% 2023 Notes") \| Cost
Disclosure of financial liabilities [line items]
Borrowings, interest rate				5.375%		5.375%	5.375%
Borrowings					519.5
4.250% USD senior secured notes ("4.250% 2025 Secured Notes") \| Cost
Disclosure of financial liabilities [line items]
Borrowings, interest rate				4.25%		4.25%	4.25%
Borrowings				$ 636.6		$ 636.6
3.750% USD senior secured notes ("3.750%% 2025 Secured Notes") \| Cost
Disclosure of financial liabilities [line items]
Borrowings, interest rate				3.75%		3.75%	3.75%
Borrowings				$ 954.9		$ 954.9
7.000% USD senior unsecured notes ("7.000% 2026 Notes")
Disclosure of financial liabilities [line items]
Borrowings, interest rate									7.00%
Notional amount							$ 400		$ 275
7.000% USD senior unsecured notes ("7.000% 2026 Notes") \| Cost
Disclosure of financial liabilities [line items]
Borrowings, interest rate				7.00%		7.00%	7.00%
Borrowings					876.7
5.125% USD senior secured notes ("5.125% 2026 Secured Notes")
Disclosure of financial liabilities [line items]
Borrowings, interest rate									5.125%
Notional amount									$ 500
5.125% USD senior secured notes ("5.125% 2026 Secured Notes") \| Cost
Disclosure of financial liabilities [line items]
Borrowings, interest rate				5.125%		5.125%	5.125%
Borrowings				$ 636.6	649.4	$ 636.6
8.500% USD senior unsecured notes, ("8.500% 2027 Notes")
Disclosure of financial liabilities [line items]
Borrowings, interest rate										8.50%
Notional amount										$ 600
8.500% USD senior unsecured notes, ("8.500% 2027 Notes") \| Cost
Disclosure of financial liabilities [line items]
Borrowings, interest rate				8.50%		8.50%	8.50%
Borrowings				$ 458.4	779.3	$ 458.4
4.000% senior unsecured notes, ("4.000% 2028 Notes") \| Cost
Disclosure of financial liabilities [line items]
Borrowings, interest rate				4.00%		4.00%	4.00%
Redemption Amount	$ 405
Borrowings				$ 636.6		$ 636.6
3.500% USD senior secured notes ("3.500% 2028 Secured Notes") \| Cost
Disclosure of financial liabilities [line items]
Borrowings, interest rate				3.50%		3.50%	3.50%	3.50%
Borrowings				$ 954.9		$ 954.9
Revolving credit facility
Disclosure of financial liabilities [line items]
Non-current debt instruments issued				628		628
Revolving credit facility \| Cost
Disclosure of financial liabilities [line items]
Borrowings				148.8		148.8
Swingline facility
Disclosure of financial liabilities [line items]
Non-current debt instruments issued							$ 40
Borrowings				$ 148.8	$ 0	$ 148.8
Interest rate risk \| Fixed \| Financial obligations
Disclosure of financial liabilities [line items]
Concentration percentage				70.20%	56.40%	70.20%	70.20%
Interest rate risk \| Floating \| Financial obligations
Disclosure of financial liabilities [line items]
Concentration percentage				29.80%	43.60%	29.80%	29.80%
Reasonably possible change in risk variable, impact on pre-tax earnings		$ 15.6	$ 21.9	$ 0	$ 33.5
Commodity price risk [member] \| Diesel Fuel Commodity Contracts [Member]
Disclosure of financial liabilities [line items]
Current derivative financial liabilities				3.7	0.6	$ 3.7
Losses on change in fair value of derivatives				$ 1.8	$ 1	$ 2.8
Currency risk \| Term Loan Effective May 31, 2025
Disclosure of financial liabilities [line items]
Fixed interest rate paid				9.312		9.312	9.312
Fixed interest rate received				9.875		9.875	9.875
Notional amount paid				$ 648.8		$ 648.8
Notional amount received							$ 500
Currency risk \| Currency swap \| Term Loan Effective May 31, 2025
Disclosure of financial liabilities [line items]
Notional amount paid				$ 500.8		$ 500.8
Notional amount received							386
Notional amount							$ 450

FINANCIAL INSTRUMENTS AND RIS_6

FINANCIAL INSTRUMENTS AND RISK MANAGEMENT - Schedule of Swaps (Details) - CAD ($) $ in Millions	Dec. 31, 2020	Dec. 16, 2019
Disclosure of detailed information about financial instruments [line items]
Borrowings, interest rate		7.00%
Currency risk \| Currency swap \| 9.875% 2021 Notes effective Feb 1, 2016
Disclosure of detailed information about financial instruments [line items]
Notional amount	$ 30.6
Fixed-variable interest rate paid	9.89%
Fixed/variable interest rate received	9.875%
Fixed foreign exchange rate paid	1.4130
Currency risk \| Currency swap \| Term Loan Effective May 31, 2018
Disclosure of detailed information about financial instruments [line items]
Notional amount	$ 403.6
Fixed-variable interest rate paid	3.174%
Fixed/variable interest rate received	2.75%
Fixed foreign exchange rate paid	1.2976
Currency risk \| Currency swap \| 8.500% 2027 Notes Effective Apr 23, 2019 Swap One
Disclosure of detailed information about financial instruments [line items]
Notional amount	$ 48
Fixed-variable interest rate paid	8.399%
Fixed/variable interest rate received	8.50%
Fixed foreign exchange rate paid	1.3355
Currency risk \| Currency swap \| 8.500% 2027 Notes Effective Apr 23, 2019 Swap Two
Disclosure of detailed information about financial instruments [line items]
Notional amount	$ 300
Fixed-variable interest rate paid	8.419%
Fixed/variable interest rate received	8.50%
Fixed foreign exchange rate paid	1.3355
Currency risk \| Currency swap \| 5.125% 2026 Secured Notes Effective Dec 16, 2019
Disclosure of detailed information about financial instruments [line items]
Notional amount	$ 500
Fixed-variable interest rate paid	5.725%
Fixed/variable interest rate received	5.125%
Fixed foreign exchange rate paid	1.3245
Currency risk \| Currency swap \| 4.250% 2025 Secured Notes Effective Apr 29, 2020
Disclosure of detailed information about financial instruments [line items]
Notional amount	$ 500
Fixed-variable interest rate paid	4.805%
Fixed/variable interest rate received	4.25%
Fixed foreign exchange rate paid	1.4198
Currency risk \| Currency swap \| 4.000% 2028 Notes Effective Nov 23, 2020
Disclosure of detailed information about financial instruments [line items]
Notional amount	$ 500
Fixed-variable interest rate paid	4.524%
Fixed/variable interest rate received	4.00%
Fixed foreign exchange rate paid	1.3112

COMMITMENTS AND CONTINGENT LI_2

COMMITMENTS AND CONTINGENT LIABILITIES (Details) - CAD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Contingent liability for guarantees
Disclosure of contingent liabilities [line items]
Aggregate contract limit for the bonds	$ 1,697.4	$ 778.6

RELATED PARTY TRANSACTIONS (Det

RELATED PARTY TRANSACTIONS (Details)	Mar. 05, 2020CAD ($)	Feb. 01, 2020$ / sharesshares	Jun. 30, 2018CAD ($)	May 31, 2018CAD ($)	Dec. 31, 2018CAD ($)	Jun. 30, 2018CAD ($)	Dec. 31, 2018CAD ($)	Dec. 31, 2020CAD ($)	Dec. 31, 2019CAD ($)
Disclosure of transactions between related parties [line items]
Due to related party								$ 30,800,000	$ 14,000,000
Separation payment to a director \| shares		73,947
IPO price \| $ / shares		$ 19
Cash outflow for leases								2,700,000	1,600,000
Compensation of key management personnel			$ 59,300,000	$ 59,300,000	$ 59,300,000	$ 59,300,000		41,800,000	3,900,000
Related parties
Disclosure of transactions between related parties [line items]
Cash outflow for leases							$ 200,000
Josaud Holdings Inc.
Disclosure of transactions between related parties [line items]
Due to related party	$ 35,000,000							17,500,000	21,000,000
Semi-annual instalments	3,500,000
Sejosa Holdings Inc.
Disclosure of transactions between related parties [line items]
Due to related party	29,000,000							$ 26,100,000	$ 0
Semi-annual instalments	$ 2,900,000

EXPENSES BY NATURE (Details)

EXPENSES BY NATURE (Details) - CAD ($) $ in Millions	5 Months Ended	7 Months Ended	12 Months Ended
EXPENSES BY NATURE (Details) - CAD ($) $ in Millions	May 31, 2018	Dec. 31, 2018	Dec. 31, 2020	Dec. 31, 2019
EXPENSES BY NATURE
Employee benefits	$ 207	$ 383.7	$ 1,308.1	$ 1,022.5
Transfer and disposal costs	161.3	314.6	1,002	873.5
Interest and other finance costs	127.4	242.2	597.6	532.2
Depreciation of property and equipment	66.3	178.2	810.6	465.3
Amortization of intangible assets	40.9	127.5	427	334.1
Other expense	61.9	116.9	408.1	286.5
Transaction costs	42.4	103.7	60.1	65.5
IPO transaction costs			46.2
Acquisition, rebranding and other integration costs	8.8	13	11.4	36.4
Unbilled revenue reversal			0	31.6
Maintenance and repairs	31.9	65.6	244.1	183.8
Fuel costs	35.2	64.8	159	155.9
(Gain) loss on foreign exchange	16.6	39.6	(37.3)	(48.9)
Share-based payments	18.8	2	37.9	14.5
Loss (gain) on sale of property and equipment	(0.1)	4.7	4.6	1.2
Mark-to-market loss on Purchase Contracts	0	0	449.2	0
Impairment and other charges			21.4
Deferred purchase consideration	1	1	2	2
Total expenses by nature	$ 819.4	$ 1,657.5	$ 5,552	$ 3,956.1