BrightView (BV) 10-Q 5 May 22 2022 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Mar. 31, 2022	Apr. 30, 2022
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2022
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q2
Entity Registrant Name	BrightView Holdings, Inc.
Trading Symbol	BV
Entity Central Index Key	0001734713
Current Fiscal Year End Date	--09-30
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		93,000,000
Entity Current Reporting Status	Yes
Security Exchange Name	NYSE
Title of 12(b) Security	Common Stock, Par Value $0.01 Per Share
Entity Interactive Data Current	Yes
Entity Shell Company	false
Entity File Number	001-38579
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	46-4190788
Entity Address, Address Line One	980 Jolly Road
Entity Address, City or Town	Blue Bell
Entity Address, State or Province	PA
Entity Address, Country	US
Entity Address, Postal Zip Code	19422
City Area Code	484
Local Phone Number	567-7204
Document Quarterly Report	true
Document Transition Report	false

Consolidated Balance Sheets (Un

Consolidated Balance Sheets (Unaudited) - USD ($) $ in Millions	Mar. 31, 2022	Sep. 30, 2021
Current assets:
Cash and cash equivalents	$ 45.5	$ 123.7
Accounts receivable, net	411.4	378.9
Unbilled revenue	97.1	111.2
Other current assets	110	97
Total current assets	664	710.8
Property and equipment, net	301.3	264.4
Intangible assets, net	189	197.6
Goodwill	2,017.8	1,950.8
Operating lease assets	80	69.5
Other assets	42.5	44.5
Total assets	3,294.6	3,237.6
Current liabilities:
Accounts payable	158.1	144.4
Current portion of long-term debt	10.4	10.4
Deferred revenue	81.5	48.2
Current portion of self-insurance reserves	47.9	50.2
Accrued expenses and other current liabilities	203	220.9
Current portion of operating lease liabilities	24.8	22
Total current liabilities	525.7	496.1
Long-term debt, net	1,259.3	1,130.6
Deferred tax liabilities	57.7	70.8
Self-insurance reserves	104.6	104.5
Long-term operating lease liabilities	61.7	54.2
Other liabilities	32.1	38.7
Total liabilities	2,041.1	1,894.9
Stockholders’ equity:
Preferred stock, $0.01 par value; 50,000,000 shares authorized; no shares issued or outstanding as of March 31, 2022 and September 30, 2021		0
Common stock, $0.01 par value; 500,000,000 shares authorized; 105,700,000 and 105,200,000 shares issued and 98,900,000 and 105,200,000 shares outstanding as of March 31, 2022 and September 30, 2021, respectively	1.1	1.1
Treasury stock, at cost; 6,800,000 and 287,000 shares as of March 31, 2022 and September 30, 2021, respectively	(95.2)	(4.4)
Additional paid-in-capital	1,499.9	1,489.1
Accumulated deficit	(153.7)	(141.6)
Accumulated other comprehensive loss	1.4	(1.5)
Total stockholders’ equity	1,253.5	1,342.7
Total liabilities and stockholders’ equity	$ 3,294.6	$ 3,237.6

Consolidated Balance Sheets (_2

Consolidated Balance Sheets (Unaudited) (Parenthetical) - $ / shares	Mar. 31, 2022	Sep. 30, 2021
Statement of Financial Position [Abstract]
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, authorized	50,000,000	50,000,000
Preferred stock, issued	0	0
Preferred stock, outstanding	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, authorized	500,000,000	500,000,000
Common stock, issued	105,700,000	105,200,000
Common stock, outstanding	98,900,000	105,200,000
Treasury stock, shares	6,800,000	287,000

Consolidated Statements of Oper

Consolidated Statements of Operations (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021
Income Statement [Abstract]
Net service revenues	$ 711.9	$ 651.9	$ 1,303.8	$ 1,206.3
Cost of services provided	554.8	493.8	1,006.8	914.6
Gross profit	157.1	158.1	297	291.7
Selling, general and administrative expense	133.4	127.9	268.2	251.3
Amortization expense	12	12.5	25.5	26.4
Income from operations	11.7	17.7	3.3	14
Other (expense) income	(1)	0.5	(0.4)	2
Interest expense	10.1	9.6	19.7	23.1
Income (loss) before income taxes	0.6	8.6	(16.8)	(7.1)
Income tax (benefit) expense	(0.1)	2.3	(4.7)	(1.4)
Net income (loss)	$ 0.7	$ 6.3	$ (12.1)	$ (5.7)
Income (loss) per share:
Basic and Diluted	$ 0.01	$ 0.06	$ 0.12	$ (0.05)

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income (loss)		$ 0.7	$ 6.3	$ (12.1)	$ (5.7)
Net derivative gains and other costs arising during the period, net of tax expense of $0.7; $0.5; $1.1; and $0.5, respectively	[1]	1.9	1.6	2.8	1.3
Reclassification of losses into net income (loss), net of tax benefit (expense) of $0.1; $0.1; $0.0; and $(1.5), respectively		0.5	0.2	0.1	4.1
Other comprehensive income		2.4	1.8	2.9	5.4
Comprehensive income (loss)		$ 3.1	$ 8.1	$ (9.2)	$ (0.3)
[1]	Other costs include the effects of foreign currency translation adjustments which were immaterial during the periods presented.

Consolidated Statements of Co_2

Consolidated Statements of Comprehensive Income (Loss) (Unaudited) (Parenthetical) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021
Statement of Comprehensive Income [Abstract]
Net derivative gains (losses) arising during the period, net of tax expense (benefit)	$ 0.7	$ 0.5	$ 1.1	$ 0.5
Reclassification of losses into net (loss), net of tax expense	$ 0.2	$ 0.1	$ 0	$ (1.5)

Consolidated Statements of Chan

Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($) shares in Millions, $ in Millions	Total	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive Income (Loss)	Treasury Stock
Balance at Sep. 30, 2020	$ 1,271.5	$ 1	$ 1,467.8	$ (187.9)	$ (6.9)	$ (2.5)
Balance, Shares at Sep. 30, 2020		104.9
Net income (loss)	(5.7)			(5.7)
Other comprehensive income, net of tax	5.4				5.4
Capital contributions and issuance of common stock	1.5	$ 0.1	1.4
Capital contributions and issuance of common stock, Shares		0.3
Equity-based compensation	10.2		10.2
Repurchase of common stock and distributions	1.1					1.1
Balance at Mar. 31, 2021	1,281.8	$ 1.1	1,479.4	(193.6)	(1.5)	(3.6)
Balance, Shares at Mar. 31, 2021		105.2
Balance at Dec. 31, 2020	1,268.7	$ 1.1	1,474.4	(199.9)	(3.3)	(3.6)
Balance, Shares at Dec. 31, 2020		105.1
Net income (loss)	6.3			6.3
Other comprehensive income, net of tax	1.8				1.8
Capital contributions and issuance of common stock	(0.3)		(0.3)
Capital contributions and issuance of common stock, Shares		0.1
Equity-based compensation	5.3		5.3
Balance at Mar. 31, 2021	1,281.8	$ 1.1	1,479.4	(193.6)	(1.5)	(3.6)
Balance, Shares at Mar. 31, 2021		105.2
Balance at Sep. 30, 2021	1,342.7	$ 1.1	1,489.1	(141.6)	(1.5)	(4.4)
Balance, Shares at Sep. 30, 2021		105.2
Net income (loss)	(12.1)			(12.1)
Other comprehensive income, net of tax	2.9				2.9
Capital contributions and issuance of common stock	1.5		1.5
Capital contributions and issuance of common stock, Shares		0.5
Equity-based compensation	9.3		9.3
Repurchase of common stock and distributions	(90.8)					(90.8)
Balance at Mar. 31, 2022	1,253.5	$ 1.1	1,499.9	(153.7)	1.4	(95.2)
Balance, Shares at Mar. 31, 2022		105.7
Balance at Dec. 31, 2021	1,334.5	$ 1.1	1,495.3	(154.4)	(1)	(6.5)
Balance, Shares at Dec. 31, 2021		105.7
Net income (loss)	0.7			0.7
Other comprehensive income, net of tax	2.4				2.4
Equity-based compensation	4.6		4.6
Repurchase of common stock and distributions	88.7					88.7
Balance at Mar. 31, 2022	$ 1,253.5	$ 1.1	$ 1,499.9	$ (153.7)	$ 1.4	$ (95.2)
Balance, Shares at Mar. 31, 2022		105.7

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	6 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash flows from operating activities:
Net (loss) income	$ (12.1)	$ (5.7)
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Depreciation	45.8	42.3
Amortization of intangible assets	25.5	26.4
Amortization of financing costs and original issue discount	1.9	1.9
Deferred taxes	(10.5)	(0.8)
Equity-based compensation	9.3	10.2
Realized loss on hedges	0.1	5.6
Other non-cash activities, net	(0.1)	1.2
Change in operating assets and liabilities:
Accounts receivable	(19.1)	(48.7)
Unbilled and deferred revenue	47.9	37
Other operating assets	(10.9)	8.1
Accounts payable and other operating liabilities	(35.5)	5.9
Net cash (used) provided by operating activities	42.3	83.4
Cash flows from investing activities:
Purchase of property and equipment	(64.2)	(27.9)
Proceeds from sale of property and equipment	2.6	3.4
Business acquisitions, net of cash acquired	(84.4)	(75.7)
Other investing activities, net	0.3	0.2
Net cash (used) by investing activities	(145.7)	(100)
Cash flows from financing activities:
Repayments of finance lease obligations	(11.7)	(8.8)
Repayments of term loan	(5.2)	(5.2)
Repayments of receivables financing agreement	(95)	(24.6)
Proceeds from receivables financing agreement, net of issue costs	147	24
Proceeds from revolving credit facility	80
Proceeds from issuance of common stock, net of share issuance costs	0.9	1
Repurchase of common stock and distributions	(90.8)	(1.1)
Other financing activities, net	0	(2)
Net cash (used) by financing activities	25.2	(16.7)
Net change in cash and cash equivalents	(78.2)	(33.3)
Cash and cash equivalents, beginning of period	123.7	157.1
Cash and cash equivalents, end of period	45.5	123.8
Supplemental Cash Flow Information
Cash paid for income taxes, net	8.8	3
Cash paid for interest	$ 17.7	$ 22.7

Business and Basis of Presentat

Business and Basis of Presentation	6 Months Ended
	Mar. 31, 2022
Accounting Policies [Abstract]
Business and Basis of Presentation	1 . Business and Basis of Presentation BrightView Holdings, Inc. (the “Company” and, collectively with its consolidated subsidiaries, “BrightView”) provides landscape maintenance and enhancements, landscape development, snow removal and other landscape related services for commercial customers throughout the United States. BrightView is aligned into two reportable segments: Maintenance Services and Development Services. Prior to its initial public offering completed in July 2018 (the “IPO”), the Company was a wholly-owned subsidiary of BrightView Parent L.P. (“Parent”), an affiliate of KKR & Co. Inc. (“KKR”). The Parent and Company were formed through a series of transactions entered into by KKR to acquire the Company on December 18, 2013 (the “KKR Acquisition”). The Parent was dissolved in August 2018 following the IPO. After the completion of the IPO and through May 13, 2021, affiliates of the Sponsors controlled a majority of the voting power of the Company’s common stock. On May 14, 2021, in accordance with the terms of the Stockholders Agreement, MSD Partners, L.P. notified the Company of its election to terminate (i) its right to nominate a director pursuant to Section 2.1(a) of the Stockholders Agreement and (ii) the voting agreement pursuant to Section 2.1(j) of the Stockholders Agreement, effective immediately. As a result, the Company has not qualified as a “controlled company” within the meaning of the corporate governance standards of the New York Stock Exchange (“NYSE”) since this date. Basis of Presentation These consolidated financial statements have been prepared by the Company in accordance with accounting principles generally accepted in the United States of America (“GAAP”) for interim reporting and are unaudited. In the opinion of management, the accompanying unaudited consolidated financial statements include all adjustments, including normal, recurring accruals that are necessary for a fair presentation of the Company’s operations for the periods presented in conformity with GAAP. All intercompany activity and balances have been eliminated from the consolidated financial statements. The consolidated results of operations for the interim periods presented are not necessarily indicative of results for the full year. The Consolidated Balance Sheet as of September 30, 2021, presented herein, has been derived from the Company’s audited consolidated financial statements as of and for the fiscal year ended September 30, 2021, but does not include all disclosures required by GAAP, for annual financial statements. For a more complete discussion of the Company’s accounting policies and certain other information refer to the audited consolidated financial statements and the notes thereto included in the Company’s annual report on Form 10-K for the fiscal year ended September 30, 2021 , filed with the Securities and Exchange Commission (“SEC”). Use of Estimates The preparation of the consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the period. On an ongoing basis, management reviews its estimates, including those related to allowances for doubtful accounts, revenue recognition, self-insurance reserves, estimates related to the Company’s assessment of goodwill for impairment, useful lives for depreciation and amortization, realizability of deferred tax assets, and litigation based on currently available information. Changes in facts and circumstances may result in revised estimates and actual results may differ from estimates.

Recent Accounting Pronouncement

Recent Accounting Pronouncements	6 Months Ended
	Mar. 31, 2022
Accounting Standards Update and Change in Accounting Principle [Abstract]
Recent Accounting Pronouncements	2 . Recent Accounting Pronouncements Simplifying the Accounting for Income Taxes In December 2019, the FASB issued ASU No. 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes which removes specified exceptions and adds requirements to simplify the accounting for income taxes. The Company adopted the guidance in the first quarter of fiscal 2022. The adoption of ASU 2019-12 did not have a material impact on the Company's consolidated financial statements and disclosures. Reference Rate Reform In March 2020, the FASB issued ASU No. 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting which provides optional expedients and exceptions for the accounting for contracts, hedging relationships, and other transactions affected by reference rate reform if certain criteria are met. The guidance is effective for the Company upon issuance through December 31, 2022. The guidance in ASU 2020-04 is optional and may be elected over time as reference rate reform activities occur. During the third quarter of fiscal 2020 the Company elected to apply the hedge accounting expedients related to probability and the assessments of effectiveness for future LIBOR-indexed cash flows to assume that the index upon which future hedged transactions will be based matches the index on the corresponding derivatives. Application of these expedients preserves the presentation of derivatives consistent with past presentation. In January 2021, the FASB issued ASU 2021-01 to clarify the scope of certain optional expedients for derivatives that are affected by the discounting transition. The Company continues to evaluate the impact of the guidance on its consolidated financial statements and may apply other elections as applicable as additional changes in the market occur. Business Combinations In October 2021, the FASB issued ASU No. 2021-08, Business Combinations (Topic 805): Accounting for Contract Assets and Contract Liabilities from Contracts with Customers which requires that an entity (acquirer) recognize and measure contract assets and contract liabilities acquired in a business combination in accordance with Topic 606 as if it had originated the contracts. The guidance is effective for the Company in the first quarter of fiscal 2023. The Company is in the process of evaluating the impact of ASU No. 2021-08 on its consolidated financial statements.

Revenue

Revenue	6 Months Ended
	Mar. 31, 2022
Revenue from Contract with Customer [Abstract]
Revenue	3 . Revenue The Company’s revenue is generated from Maintenance Services and Development Services. The Company generally recognizes revenue from the sale of services as the services are performed, typically ratably over the term of the contract(s), which the Company believes to be the best measure of progress. The Company recognizes revenues as it transfers control of products and services to its customers. The Company recognizes revenue in an amount reflecting the total consideration it expects to receive from the customer. Revenue is recognized according to the following five step model: (1) identify the contract with a customer, (2) identify the performance obligations in the contract, (3) determine the transaction price, (4) allocate the transaction price to the performance obligations in the contract, and (5) recognize revenues when a performance obligation is satisfied. The Company determined that for contracts containing multiple performance obligations, stand-alone selling price is readily determinable for each performance obligation and therefore allocation of the transaction price to multiple performance obligations is not necessary. The transaction price will include estimates of variable consideration, such as returns and provisions for doubtful accounts and sales incentives, to the extent it is probable that a significant reversal of revenue recognized will not occur. In all cases, when a sale is recorded by the Company, no significant uncertainty exists surrounding the purchaser’s obligation to pay. Maintenance Services The Company’s Maintenance Services revenues are generated primarily through landscape maintenance services and snow removal services. Landscape maintenance services that are primarily viewed as non-discretionary, such as lawn care, mowing, gardening, mulching, leaf removal, irrigation and tree care, are provided under recurring annual contracts, which typically range from one to three years in duration and are generally cancellable by the customer with 30-90 days’ notice. Snow removal services are provided on either fixed fee based contracts or per occurrence contracts. Both landscape maintenance services and snow removal services can also include enhancement services that represent supplemental maintenance or improvement services generally provided under contracts of short duration related to specific services. Revenue for landscape maintenance and snow removal services under fixed fee models is recognized over time using an output based method. Additionally, a portion of the Company’s recurring fixed fee landscape maintenance and snow removal services are recorded under the series guidance. The right to invoice practical expedient, defined below, is generally applied to revenue related to landscape maintenance and snow removal services performed in relation to per occurrence contracts as well as enhancement services. When use of the practical expedient is not appropriate for these contracts, revenue is recognized using a cost-to-cost input method. Fees for contracted landscape maintenance services are typically billed on an equal monthly basis. Fees for fixed fee snow removal services are typically billed on an equal monthly basis during snow season, while fees for time and material or other activity-based snow removal services are typically billed as the services are performed. Fees for enhancement services are typically billed as the services are performed. Development Services For Development Services, revenue is primarily recognized over time using the cost-to-cost input method, measured by the percentage of cost incurred to date to the estimated total cost for each contract, which we believe to be the best measure of progress. The full amount of anticipated losses on contracts is recorded as soon as such losses can be estimated. These losses are immaterial to current and historical operations. Changes in job performance, job conditions, and estimated profitability, including final contract settlements, may result in revisions to costs and revenue and are recognized in the period in which the revisions are determined. Disaggregation of revenue The following table presents the Company’s reportable segment revenues, disaggregated by revenue type. The Company disaggregates revenue from contracts with customers into major services lines. The Company has determined that disaggregating revenue into these categories depicts how the nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factors. The Company’s reportable segments are Maintenance Services and Development Services. As noted in the business segment reporting information in Note 12 “Segments”, the Company’s reportable segments are Maintenance Services and Development Services. Three Months Ended Six Months Ended 2022 2021 2022 2021 Landscape Maintenance $ 345.2 $ 309.7 $ 747.4 $ 672.0 Snow Removal 208.2 226.0 244.2 281.8 Maintenance Services 553.4 535.7 991.6 953.8 Development Services 159.7 117.1 314.4 254.4 Eliminations ( 1.2 ) ( 0.9 ) ( 2.2 ) ( 1.9 ) Net service revenues $ 711.9 $ 651.9 $ 1,303.8 $ 1,206.3 Remaining Performance Obligations Remaining performance obligations represent the estimated revenue expected to be recognized in the future related to performance obligations which are fully or partially unsatisfied at the end of the period. As of March 31, 2022, the estimated future revenues for remaining performance obligations that are part of a contract that has an original expected duration of greater than one year was approximately $ 386.0 . The Company expects to recognize revenue on 52 % of the remaining performance obligations over the next 12 months and an additional 48 % over the 12 months thereafter. Contract Assets and Liabilities When a contract results in revenue being recognized in excess of the amount the Company has invoiced or has the right to invoice to the customer, a contract asset is recognized. Contract assets are transferred to Accounts receivable, net when the rights to the consideration become unconditional. Contract assets are presented as Unbilled revenue on the Consolidated Balance Sheets. Contract liabilities consist of payments received from customers, or such consideration that is contractually due, in advance of providing the product or performing services such that control has not passed to the customer. Contract liabilities are presented as Deferred revenue on the Consolidated Balance Sheets. Changes in Deferred revenue for the six month period ended March 31, 2022 were as follows: Deferred Balance, September 30, 2021 $ 48.2 Recognition of revenue ( 474.1 ) Deferral of revenue 507.4 Balance, March 31, 2022 $ 81.5 There were $ 84.2 of billings and $ 70.1 of additions to our Unbilled revenue balance during the six month period ended March 31, 2022. Practical Expedients and Exemptions The Company offers certain interest-free contracts to customers where payments are received over a period not exceeding one year. Additionally, certain Maintenance Services and Development Services customers may pay in advance for services. The Company does not adjust the promised amount of consideration for the effects of these financing components . At contract inception, the period of time between the performance of services and the customer payment is one year or less. As permitted under the practical expedient available under ASU No. 2014-09, the Company does not disclose the value of unsatisfied performance obligations for (i) contracts with an original expected length of one year or less, (ii) contracts with variable consideration that is allocated entirely to unsatisfied performance obligations or to a wholly unsatisfied promise accounted for under the series guidance and (iii) contracts for which the Company recognizes revenue at the amount which we have the right to invoice for services performed.

Accounts Receivable, net

Accounts Receivable, net	6 Months Ended
	Mar. 31, 2022
Receivables [Abstract]
Accounts Receivable, net	4 . Accounts Receivable, net Accounts receivable of $ 411.4 and $ 378.9 , is net of an allowance for doubtful accounts of $ 4.3 and $ 3.2 and includes amounts of retention on incomplete projects to be completed within one year of $ 44.5 and $ 43.4 at March 31, 2022 and September 30, 2021 , respectively.

Property and Equipment, net

Property and Equipment, net	6 Months Ended
	Mar. 31, 2022
Property, Plant and Equipment [Abstract]
Property and Equipment, net	5 . Property and Equipment, net Property and equipment, net consists of the following: Useful Life March 31, September 30, Land — $ 43.3 $ 42.2 Buildings and leasehold improvements 2 - 40 yrs. 44.3 38.6 Operating equipment 2 - 7 yrs. 277.1 239.1 Transportation vehicles 3 - 7 yrs. 314.6 288.4 Office equipment and software 3 - 10 yrs. 73.1 74.3 Construction in progress — 3.9 4.1 Property and equipment 756.3 686.7 Less: Accumulated depreciation 455.0 422.3 Property and equipment, net $ 301.3 $ 264.4 Construction in progress includes costs incurred for software and other assets that have not yet been placed in service. Depreciation expense related to property and equipment was $ 24.4 and $ 20.7 for the three months ended March 31, 2022 and 2021, respectively. Depreciation expense related to property and equipment was $ 45.8 and $ 42.3 for the six months ended March 31, 2022 and 2021, respectively.

Intangible Assets, Goodwill and

Intangible Assets, Goodwill and Acquisitions	6 Months Ended
	Mar. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible Assets, Goodwill and Acquisitions	6 . Intangible Assets, Goodwill and Acquisitions Intangible assets Identifiable intangible assets consist of acquired customer contracts and relationships, trademarks and non-compete agreements. Amortization expense related to intangible assets was $ 12.0 and $ 12.5 for the three months ended March 31, 2022 and 2021, respectively. Amortization expense related to intangible assets was $ 25.5 and $ 26.4 for the six months ended March 31, 2022 and 2021, respectively. These assets are amortized over their estimated useful lives of which the reasonableness is continually evaluated by the Company. The weighted average amortization period of intangible assets acquired during the six months ended March 31, 2022 is seven years. Intangible assets as of March 31, 2022 and September 30, 2021 consisted of the following: March 31, 2022 September 30, 2021 Estimated Gross Accumulated Gross Accumulated Customer relationships 6 - 21 yrs. $ 711.7 $ ( 524.8 ) $ 694.9 $ ( 499.8 ) Trademarks 12 yrs. 3.8 ( 2.5 ) 3.8 ( 2.3 ) Non-compete agreements 5 yrs. 2.7 ( 1.9 ) 2.7 ( 1.7 ) Total intangible assets $ 718.2 $ ( 529.2 ) $ 701.4 $ ( 503.8 ) Goodwill The following is a summary of the goodwill activity for the periods ended September 30, 2021 and March 31, 2022: Maintenance Development Total Balance, September 30, 2020 $ 1,680.4 $ 178.9 $ 1,859.3 Acquisitions 77.6 13.9 91.5 Balance, September 30, 2021 $ 1,758.0 $ 192.8 $ 1,950.8 Acquisitions (1) 30.1 36.9 67.0 Balance, March 31, 2022 $ 1,788.1 $ 229.7 $ 2,017.8 (1) The acquisitions adjustment includes the immaterial impact of foreign currency adjustments during the period. Acquisitions During the six months ended March 31, 2022 , the Company acquired, through a series of separate transactions, 100 % of the operations of six unrelated companies, one of which was allocated between Maintenance Services and Development Services. The Company paid approximately $ 84.4 in aggregate consideration for the acquisitions, net of cash acquired. The Company accounted for the business combinations under the acquisition method and, accordingly, recorded the assets acquired and liabilities assumed at their estimated fair market values based on management’s preliminary estimates, with the excess allocated to goodwill. The fair values were primarily estimated using Level 3 assumptions within the fair value hierarchy, including estimated future cash flows, discount rates and other factors. The valuation process to determine fair values is not yet complete. The Company will finalize the amounts recognized as it obtains the information necessary to complete the analysis, but no later than one year from the acquisition date. The identifiable assets acquired were primarily customer relationship intangible assets of $ 16.8 . The amount allocated to goodwill is reflective of the benefits the Company expects to realize from anticipated synergies and the acquired assembled workforce. The Company expects a portion of the goodwill resulting from these acquisitions will be deductible for tax purposes. During the six months ended March 31, 2021, the Company acquired, through a series of separate transactions, 100 % of the operations of four unrelated companies, of which two were allocated between both Maintenance Services and Development Services. The Company paid approximately $ 75.7 in aggregate consideration for the acquisitions, net of cash acquired. The Company accounted for the business combinations under the acquisition method and, accordingly, recorded the assets acquired and liabilities assumed at their estimated fair market values based on management’s preliminary estimates, with the excess allocated to goodwill. The fair values were primarily estimated using Level 3 assumptions within the fair value hierarchy, including estimated future cash flows, discount rates and other factors. The identifiable assets acquired were primarily customer relationship intangible assets of $ 18.0 . The amount allocated to goodwill is reflective of the benefits the Company expects to realize from anticipated synergies and workforce in place. The Company expects a portion of the goodwill resulting from these acquisitions will be deductible for tax purposes.

Long-Term Debt

Long-Term Debt	6 Months Ended
	Mar. 31, 2022
Debt Disclosure [Abstract]
Long-Term Debt	7 . Long-term Debt Long-term debt consists of the following: March 31, September 30, Series B term loan $ 996.8 $ 1,001.7 Receivables financing agreement 202.4 150.4 Revolving Credit Agreement $ 80.0 $ — Financing costs, net ( 9.5 ) ( 11.1 ) Total debt, net 1,269.7 1,141.0 Less: Current portion of long-term debt 10.4 10.4 Long-term debt, net $ 1,259.3 $ 1,130.6 First Lien credit facility term loans and Series B Term Loan due 2025 In connection with the KKR Acquisition, the Company and a group of financial institutions entered into a credit agreement (the “Credit Agreement”) dated December 18, 2013 . The Credit Agreement consisted of seven-year $ 1,460.0 term loans (“First Lien Term Loans”) and a five-year $ 210.0 revolving credit facility. All amounts outstanding under the Credit Agreement were collateralized by substantially all of the assets of the Company. On August 15, 2018, the Company entered into Amendment No. 5 to the Credit Agreement (the “Amended Credit Agreement”). Under the terms of the Amended Credit Agreement, the Credit Agreement was amended to provide for: (i) a $ 1,037.0 seven-year term loan (the “Series B Term Loan”) and (ii) a $ 260.0 five-year revolving credit facility. The Series B Term Loan matures on August 15, 2025 and bears interest at a rate per annum of LIBOR, plus 2.5 %. The Company used the net proceeds from the Series B Term Loan to repay all amounts outstanding under the Company’s First Lien Term Loans. An original discount of $ 2.8 was incurred when the Series B Term Loan was issued and is being amortized using the effective interest method over the life of the debt, resulting in an effective yield of 2.5 %. Debt repayments for the Series B Term Loan consisted of contractual payments per the Credit Agreement and totaled $ 5.2 for the six month periods ended March 31, 2022 and 2021. Revolving credit facility The Company has a five-year $ 260.0 revolving credit facility (the “Revolving Credit Facility”) that matures on August 15, 2023 and bears interest at a rate per annum of LIBOR plus a margin ranging from 2.00 % to 2.50 %, with the margin determined based on the Company’s first lien net leverage ratio. The Revolving Credit Facility replaced the previous $ 210.0 revolving credit facility under the Credit Agreement. During the six months ended March 31, 2022 the Company borrowed $ 80.0 against the capacity. There were no borrowings or repayments under the facility for the six months ended March 31, 2021. Receivables financing agreement On April 28, 2017, the Company, through a wholly-owned subsidiary, entered into a receivables financing agreement (the “Receivables Financing Agreement”). The Receivables Financing Agreement provided a borrowing capacity of $ 175.0 through April 27, 2020 . On February 21, 2019, the Company entered into the First Amendment to the Receivables Financing Agreement (the "Amendment Agreement") which increased the borrowing capacity to $ 200.0 and extended the term through February 20, 2022 . On February 19, 2021, the Company entered into the Second Amendment to the Receivables Financing Agreement (the "Second Amendment") which extended the term through February 20, 2024 and increased the borrowing capacity to $ 235.0 through September 20, 2021 and $ 250.0 thereafter. All amounts outstanding under the Receivables Financing Agreement are collateralized by substantially all of the accounts receivable and unbilled revenue of the Company. During the six months ended March 31, 2022 the Company borrowed $ 147.0 against the capacity and voluntarily repaid $ 95.0 . During the six months ended March 31, 2021 the Company borrowed $ 24.5 against the capacity and voluntarily repaid $ 24.6 . The following are the scheduled maturities of long-term debt for the remainder of fiscal 2022 and the following five fiscal years and thereafter, which do not include any estimated excess cash flow payments: 2022 $ 5.2 2023 90.4 2024 212.8 2025 972.2 2026 and thereafter — Total long-term debt 1,280.6 Less: Current maturities 10.4 Less: Original issue discount 1.4 Less: Financing costs 9.5 Total long-term debt, net $ 1,259.3 The Company has estimated the fair value of its long-term debt to be approximately $ 1,191.8 and $ 1,148.7 as of March 31, 2022 and September 30, 2021 , respectively. Fair value is based on market bid prices around period-end (Level 2 inputs).

Fair Value Measurements and Der

Fair Value Measurements and Derivative Instruments	6 Months Ended
	Mar. 31, 2022
Fair Value Disclosures [Abstract]
Fair Value Measurements and Derivative Instruments	8 . Fair Value Measurements and Derivative Instruments Fair value is defined as the price at which an orderly transaction to sell an asset or to transfer a liability would take place between market participants at the measurement date under current market conditions (that is, an exit price at the measurement date from the perspective of a market participant that holds the asset or owes the liability). Fair Value Hierarchy The following hierarchy for inputs used in measuring fair value should maximize the use of observable inputs and minimize the use of unobservable inputs by requiring that the most observable inputs be used when available: Level 1 Quoted prices in active markets for identical assets or liabilities that are accessible at the measurement dates. Level 2 Significant observable inputs that are used by market participants in pricing the asset or liability based on market data obtained from independent sources. Level 3 Significant unobservable inputs the Company believes market participants would use in pricing the asset or liability based on the best information available. The carrying amounts shown for the Company’s cash and cash equivalents, restricted cash, accounts receivable and accounts payable approximate fair value due to the short-term maturity of those instruments. The valuation is based on settlements of similar financial instruments all of which are short-term in nature and are generally settled at or near cost. Investments held in Rabbi Trust A non-qualified deferred compensation plan is available to certain executives. Under this plan, participants may elect to defer up to 70 % of their compensation. The Company invests the deferrals in participant-selected diversified investments that are held in a Rabbi Trust and which are classified within Other assets on the Consolidated Balance Sheets. The fair value of the investments held in the Rabbi Trust is based on the quoted market prices of the underlying mutual fund investments. These investments are based on the participants’ selected investments, which represent the underlying liabilities to the participants in the non-qualified deferred compensation plan. Gains and losses on these investments are included in Other (expense) income on the Consolidated Statements of Operations. Derivatives The Company’s objective in entering into derivative transactions is to manage its exposure to interest rate movements associated with its variable rate debt and changes in fuel prices. The Company recognizes derivatives as either assets or liabilities on the balance sheet and measures those instruments at fair value. The fair values of the derivative financial instruments are determined using widely accepted valuation techniques including discounted cash flow analysis based on the expected cash flows of each derivative. Although the Company has determined that the significant inputs, such as interest yield curve and discount rate, used to value its derivatives fall within Level 2 of the fair value hierarchy, the credit valuation adjustments associated with the Company’s counterparties and its own credit risk utilize Level 3 inputs, such as estimates of current credit spreads to evaluate the likelihood of default by itself and its counterparties. However, as of March 31, 2022 and September 30, 2021, the Company has assessed the significance of the impact of the credit valuation adjustments on the overall valuation of its derivative positions and has determined that the credit valuation adjustments were not significant to the overall valuation of its derivatives. As a result, the Company has determined that its derivative valuations in their entirety are classified in Level 2 of the fair value hierarchy. The following tables summarize the financial assets and liabilities measured at fair value on a recurring basis as of March 31, 2022 and September 30, 2021: March 31, 2022 Carrying Value Level 1 Level 2 Level 3 Other assets: Investments held by Rabbi Trust $ 13.1 $ 13.1 $ — $ — Interest rate swap contracts 1.6 — 1.6 — Total assets $ 14.7 $ 13.1 $ 1.6 $ — Other liabilities: Obligation to Rabbi Trust $ 13.1 $ 13.1 $ — $ — Total liabilities $ 13.1 $ 13.1 $ — $ — September 30, 2021 Carrying Value Level 1 Level 2 Level 3 Other assets: Investments held by Rabbi Trust $ 13.5 $ 13.5 $ — $ — Fuel hedges 1.2 — 1.2 — Total Assets $ 14.7 $ 13.5 $ 1.2 $ — Other liabilities: Interest rate swap contracts $ 3.6 $ — $ 3.6 $ — Obligation to Rabbi Trust 13.5 13.5 — — Total Liabilities $ 17.1 $ 13.5 $ 3.6 $ — Hedging Activities As of March 31, 2022 and September 30, 2021, the Company’s outstanding derivatives qualify as cash flow hedges. The Company assesses whether derivatives used in hedging transactions are “highly effective” in offsetting changes in the cash flow of the hedged forecasted transactions. Regression analysis is used for the hedge relationships and high effectiveness is achieved when a statistically valid relationship reflects a high degree of offset and correlation between the fair values of the derivative and the hedged forecasted transaction. The entire change in the fair value for highly effective derivatives is reported in Other comprehensive income (loss) and subsequently reclassified into Interest expense (in the case of interest rate contracts) and Cost of services provided (in the case of fuel hedge contracts) in the Consolidated Statements of Operations when the hedged item affects earnings. If the hedged forecasted transaction is no longer probable of occurring, then the amount recognized in Accumulated other comprehensive loss is released to earnings. Cash flows from the derivatives are classified in the same category as the cash flows from the underlying hedged transaction. Interest Rate Swap Contracts The Company has exposures to variability in interest rates associated with its variable interest rate debt, which includes the Series B Term Loan. As such, the Company has entered into interest rate swaps to help manage interest rate exposure by economically converting a portion of its variable-rate debt to fixed-rate debt effective for the periods March 18, 2016 through December 31, 2022. The notional amount of interest rate contracts was $ 500.0 at March 31, 2022 and September 30, 2021. The net deferred gain on the interest rate swaps as of March 31, 2022 of $ 1.2 , net of taxes, are expected to be recognized in Interest expense over the next 12 months. The effects on the consolidated financial statements of the interest rate swaps which were designated as cash flow hedges were as follows: Three Months Ended Six Months Ended 2022 2021 2022 2021 Income recognized in Other comprehensive income $ 2.6 $ 0.2 $ 3.7 $ — Net (loss) reclassified from Accumulated other comprehensive ( 0.7 ) ( 0.7 ) ( 1.6 ) ( 5.2 ) Fuel Swap Contracts The Company has exposures to variability in fuel pricing associated with its purchase and usage of fuel during the ordinary course of business operating a large fleet of vehicles and equipment. As such, the Company had entered into gasoline hedge contracts to help reduce its exposure to volatility in the fuel markets. As of March 31, 2022, no fuel hedge contracts were outstanding. The effects on the consolidated financial statements of the fuel swaps which were designated as cash flow hedges were as follows: Three Months Ended Six Months Ended 2022 2021 2022 2021 Income recognized in Other comprehensive income (loss) $ — $ 1.9 $ 0.2 $ 1.8 Net gain (loss) reclassified from Accumulated other — 0.4 1.5 ( 0.4 )

Income Taxes

Income Taxes	6 Months Ended
	Mar. 31, 2022
Income Tax Disclosure [Abstract]
Income Taxes	9 . Income Taxes The following table summarizes the Company’s income tax (benefit) expense and effective income tax rate for the three and six months ended March 31, 2022 and 2021. Three Months Ended Six Months Ended 2022 2021 2022 2021 Income (loss) before income taxes $ 0.6 $ 8.6 $ ( 16.8 ) $ ( 7.1 ) Income tax (benefit) expense ( 0.1 ) 2.3 ( 4.7 ) ( 1.4 ) Effective income tax rate - 16.7 % 26.7 % 28.0 % 19.7 % The decrease in the effective tax rate for the three months ended March 31, 2022 when compared to the three months ended March 31, 2021, is primarily attributable to the state tax expense related to the geographical distribution of the pre-tax income. The increase in the effective tax rate for the six months ended March 31, 2022 when compared to the six months ended March 31, 2021 , is primarily attributable to the state tax expense related to state tax law changes that were recorded discretely in each of the periods.

Equity-Based Compensation

Equity-Based Compensation	6 Months Ended
	Mar. 31, 2022
Share-based Payment Arrangement [Abstract]
Equity-Based Compensation	10 . Equity-Based Compensation Amended and Restated 2018 Omnibus Incentive Plan On June 28, 2018 (and as amended and restated on March 10, 2020), in connection with the IPO, the Company’s Board of Directors adopted, and its stockholders approved, the BrightView Holdings, Inc. 2018 Omnibus Incentive Plan (the “2018 Omnibus Incentive Plan”). The 2018 Omnibus Incentive Plan provides that the total number of shares of common stock that may be issued under the plan is 18,650,000 . Under the plan, the Company may grant stock options, stock appreciation rights, restricted stock, other equity-based awards and other cash-based awards to employees, directors, officers, consultants and advisors. Restricted Stock Awards A summary of the Company’s restricted stock award activity for the six month period ended March 31, 2022 is presented in the following table: Shares Weighted-Avg Distribution Price per Share Outstanding at September 30, 2021 802,000 $ 14.31 Granted — — Less: Redeemed 229,000 $ 14.08 Less: Forfeited 23,000 $ 14.39 Outstanding at March 31, 2022 550,000 $ 14.40 Restricted Stock Units A summary of the Company’s restricted stock unit activity for the six month period ended March 31, 2022 is presented in the following table: Shares Weighted-Avg Distribution Price per Share Outstanding at September 30, 2021 1,299,000 $ 15.14 Granted 759,000 $ 14.94 Vested 394,000 $ 15.48 Forfeited 103,000 $ 15.02 Outstanding at March 31, 2022 1,561,000 $ 15.03 During the six month period ended March 31, 2022, the Company issued 759,000 restricted stock units (“RSUs”) at a weighted average grant date fair value of $ 14.94 per share, all of which are subject to vesting. The majority of these units will vest ratably over a four-year period commencing on the grant date. Non-cash equity-based compensation expense associated with the new grants will total approximately $ 10.0 over the requisite service period. During the six month period ended March 31, 2022, 394,000 RSUs vested and 103,000 RSUs were forfeited. Stock Option Awards A summary of the Company’s stock option activity for the six month period ended March 31, 2022 is presented in the following table: Shares Weighted-Avg Exercise Price per Share Outstanding at September 30, 2021 7,017,000 $ 21.55 Granted 783,000 $ 15.04 Exercised 1,000 $ 13.49 Forfeited 122,000 $ 17.55 Outstanding at March 31, 2022 7,677,000 $ 19.05 Vested and exercisable at March 31, 2022 4,220,000 $ 20.03 Expected to vest after March 31, 2022 3,457,000 $ 17.86 On November 18, 2021, the Company issued 783,000 stock options at a weighted average exercise price of $ 15.04 per share and a weighted average grant date fair value of $ 6.84 per share, the majority of which will vest and become exercisable ratably over a four-year period commencing on the grant date. Non-cash equity-based compensation expense associated with the grant will be approximately $ 4.7 over the requisite service period. During the six month period ended March 31, 2022, 1,000 options were exercised and 122,000 options were forfeited. Equity-Based Compensation Expense The Company recognizes equity-based compensation expense using the estimated fair value as of the grant date over the requisite service or performance period applicable to the grant. Estimates of future forfeitures are made at the date of grant and revised, if necessary, in subsequent periods if actual forfeitures differ from those estimates. The Company recognized $ 4.6 and $ 5.3 in equity-based compensation expense for the three months ended March 31, 2022 and 2021, respectively, included in Selling, general and administrative expense in the accompanying Consolidated Statements of Operations. The Company recognized $ 9.3 and $ 10.2 in equity-based compensation expense for the six month periods ended March 31, 2022 and 2021, respectively, included in Selling, general and administrative expense in the accompanying Consolidated Statements of Operations. The resulting charges increased Additional paid in capital by the same amount for each applicable period. Total unrecognized compensation cost was $ 31.8 and $ 25.6 as of March 31, 2022 and September 30, 2021, respectively, which is expected to be recognized over a weighted average period of 1.4 and 1.2 years as of March 31, 2022 and September 30, 2021, respectively. 2018 Employee Stock Purchase Plan The Company’s Stockholders have approved the Compan y’s 2018 Employee Stock Purchase Plan, (the “ESPP”). A total of 1,100,000 shares of the Company’s common stock were made available for sale under the Company’s 2018 Employee Stock Purchase Plan on October 22, 2018, of which 112,000 were issued on November 15, 2021 and 120,000 were issued on November 16, 2020. An additional portion thereof is expected to be issued in November 202 2.

Commitment and Contingencies

Commitment and Contingencies	6 Months Ended
	Mar. 31, 2022
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	11 . Commitments and Contingencies Risk Management The Company carries general liability, auto liability, workers’ compensation, professional liability, directors’ and officers’ liability and employee health care insurance policies. In addition, the Company carries umbrella liability insurance policies to cover claims over the liability limits contained in the primary policies. The Company’s insurance programs, for workers’ compensation, general liability, auto liability and employee health care for certain employees contain self-insured retention amounts, deductibles and other coverage limits (“self-insured liability”). Claims that are not self-insured as well as claims in excess of the self-insured liability amounts are insured. The Company uses estimates in the determination of the required reserves. These estimates are based upon calculations performed by third-party actuaries, as well as examination of historical trends and industry claims experience. The Company’s reserve for unpaid and incurred but not reported claims under these programs at March 31, 2022 was $ 152.5 , of which $ 47.9 was classified in current liabilities and $ 104.6 was classified in non-current liabilities in the accompanying unaudited Consolidated Balance Sheet. The Company’s reserve for unpaid and incurred but not reported claims under these programs at September 30, 2021 was $ 154.7 , of which $ 50.2 was classified in current liabilities and $ 104.5 was classified in non-current liabilities in the accompanying Consolidated Balance Sheets. While the ultimate amount of these claims is dependent on future developments, in management’s opinion, recorded reserves are adequate to cover these claims. The Company’s reserve for unpaid and incurred but not reported claims at March 31, 2022 includes $ 22.6 related to claims recoverable from third party insurance carriers. Corresponding assets of $ 6.3 and $ 16.3 are recorded at March 31, 2022, as Other current assets and Other assets, respectively. The Company’s reserve for unpaid and incurred but not reported claims at September 30, 2021 includes $ 30.5 related to claims recoverable from third party insurance carriers. Corresponding assets of $ 8.2 and $ 22.3 were recorded at September 30, 2021, as Other current assets and Other assets, respectively. Litigation Contingency From time to time, the Company is subject to legal proceedings and claims in the ordinary course of its business, principally claims made alleging injuries (including vehicle and general liability matters as well as workers’ compensation and property casualty claims). Such claims, even if lacking merit, can result in expenditures of significant financial and managerial resources. In the ordinary course of its business, the Company is also subject to claims involving current and/or former employees and disputes involving commercial and regulatory matters. Regulatory matters include, among other things, audits and reviews of local and federal tax compliance, safety and employment practices. Although the process of resolving regulatory matters and claims through litigation and other means is inherently uncertain, the Company is not aware of any such matter, legal proceeding or claim that it believes will have, individually or in the aggregate, a material effect on the Company, its financial condition, and results of operations or cash flows. For all legal matters, an estimated liability is established in accordance with the loss contingencies accounting guidance. This estimated liability is included in Accrued expenses and other current liabilities in the accompanying Consolidated Balance Sheets.

Segments

Segments	6 Months Ended
	Mar. 31, 2022
Segment Reporting [Abstract]
Segments	12 . Segments The operations of the Company are conducted through two operating segments: Maintenance Services and Development Services, which are also its reportable segments. Maintenance Services primarily consists of recurring landscape maintenance services and snow removal services as well as supplemental landscape enhancement services. Development Services primarily consists of landscape architecture and development services for new construction and large scale redesign projects. The operating segments identified above are determined based on the services provided, and they reflect the manner in which operating results are regularly reviewed by the Chief Operating Decision Maker (“CODM”) to allocate resources and assess performance. The CODM is the Company’s Chief Executive Officer. The CODM evaluates the performance of the Company’s operating segments based upon Net Service Revenues, Adjusted EBITDA and Capital Expenditures. Management uses Adjusted EBITDA to evaluate performance and profitability of each operating segment. The accounting policies of the segments are the same as those described in Note 2 “Summary of Significant Accounting Policies” in the notes to our consolidated financial statements in the Annual Report on Form 10-K for the fiscal year ended September 30, 2021. Corporate includes corporate executive compensation, finance, legal and information technology which are not allocated to the segments. Eliminations represent eliminations of intersegment revenues. The Company does not currently provide asset information by segment, as this information is not used by management when allocating resources or evaluating performance. The following is a summary of certain financial data for each of the segments: Three Months Ended Six Months Ended 2022 2021 2022 2021 Maintenance Services $ 553.4 $ 535.7 $ 991.6 $ 953.8 Development Services 159.7 117.1 314.4 254.4 Eliminations ( 1.2 ) ( 0.9 ) ( 2.2 ) ( 1.9 ) Net Service Revenues $ 711.9 $ 651.9 $ 1,303.8 $ 1,206.3 Maintenance Services $ 62.9 $ 72.3 $ 108.2 $ 121.9 Development Services 12.8 10.9 27.3 27.9 Corporate ( 16.0 ) ( 16.4 ) ( 33.2 ) ( 30.5 ) Adjusted EBITDA (1) $ 59.7 $ 66.8 $ 102.3 $ 119.3 Maintenance Services $ 27.1 $ 15.3 $ 48.9 $ 24.2 Development Services 6.9 2.0 8.1 2.3 Corporate 1.7 0.9 7.2 1.4 Capital Expenditures $ 35.7 $ 18.2 $ 64.2 $ 27.9 (1) Presented below is a reconciliation of Net income (loss) to Adjusted EBITDA: Three Months Ended Six Months Ended 2022 2021 2022 2021 Net income (loss) $ 0.7 $ 6.3 $ ( 12.1 ) $ ( 5.7 ) Interest expense 10.1 9.6 19.7 23.1 Income tax (benefit) expense ( 0.1 ) 2.3 ( 4.7 ) ( 1.4 ) Depreciation expense 24.4 20.7 45.8 42.3 Amortization expense 12.0 12.5 25.5 26.4 Business transformation and integration costs (a) 2.4 6.2 8.3 12.8 Offering-related expenses (b) — — — 0.2 Equity-based compensation (c) 4.6 5.3 9.4 10.2 COVID-19 related expenses (d) 5.6 3.9 10.4 11.4 Adjusted EBITDA $ 59.7 $ 66.8 $ 102.3 $ 119.3 (a) Business transformation and integration costs consist of (i) severance and related costs; (ii) business integration costs and (iii) information technology infrastructure, transformation costs, and other. Three Months Ended Six Months Ended (in millions) 2022 2021 2022 2021 Severance and related costs $ — $ — $ 0.3 $ 0.2 Business integration (e) 0.5 2.1 4.5 5.7 IT infrastructure, transformation, and other (f) 1.9 4.1 3.5 6.9 Business transformation and integration costs $ 2.4 $ 6.2 $ 8.3 $ 12.8 (b) Represents transaction related expenses incurred for IPO related litigation and completed or contemplated subsequent registration statements. (c) Represents equity-based compensation expense and related taxes recognized for equity incentive plans outstanding . (d) Represents expenses related to the Company’s response to the COVID-19 pandemic, principally temporary and incremental salary and related expenses, personal protective equipment, cleaning and supply purchases, and other. (e) Represents isolated expenses specifically related to the integration of acquired companies such as one-time employee retention costs, employee onboarding and training costs, and fleet and uniform rebranding costs. The Company excludes Business integration costs from the measures disclosed above since such expenses vary in amount due to the number of acquisitions and size of acquired companies as well as factors specific to each acquisition, and as a result lack predictability as to occurrence and/or timing, and create a lack of comparability between periods. (f) Represents expenses related to distinct initiatives, typically significant enterprise-wide changes. Such expenses are excluded from the measures disclosed above since such expenses vary in amount based on occurrence as well as factors specific to each of the activities, are outside of the normal operations of the business, and create a lack of comparability between periods.

Earnings (Loss) Per Share of Co

Earnings (Loss) Per Share of Common Stock	6 Months Ended
	Mar. 31, 2022
Earnings Per Share [Abstract]
Earnings (Loss) Per Share of Common Stock	13 . Earnings (Loss) Per Share of Common Stock Basic earnings (loss) per share is computed by dividing net income (loss) attributable to common shares by the weighted average number of common shares outstanding for the period. Diluted earnings (loss) per share is computed by dividing net income (loss) by the weighted-average number of shares of common stock outstanding during the period, increased to include the number of shares of common stock that would have been outstanding had potential dilutive shares of common stock been issued. Set forth below is a reconciliation of the numerator and denominator for basic and diluted earnings (loss) per share calculation for the periods indicated: Three Months Ended Six Months Ended 2022 2021 2022 2021 Numerator: Net income (loss) available to common stockholders $ 0.7 $ 6.3 $ ( 12.1 ) $ ( 5.7 ) Denominator: Weighted average number of common shares outstanding – basic 100,282,000 105,183,000 102,705,000 105,165,000 Basic income (loss) per share $ 0.01 $ 0.06 $ ( 0.12 ) $ ( 0.05 ) Weighted average number of common shares outstanding – diluted 100,608,000 105,670,000 102,705,000 105,165,000 Diluted income (loss) per share $ 0.01 $ 0.06 $ ( 0.12 ) $ ( 0.05 ) Other Information: Weighted average number of anti-dilutive options and restricted stock (a) 4,005,787 7,719,000 5,363,000 7,754,000 (a) Weighted average number of anti-dilutive options is based upon the average closing price of the Company’s common stock on the NYSE for the period.

Subsequent Events

Subsequent Events	6 Months Ended
	Mar. 31, 2022
Subsequent Events [Abstract]
Subsequent Events	On March 13, 2022, the Company entered into an agreement to repurchase 5,906,954 shares from MSD Valley Investments, LLC at $ 12.33 per share under the share repurchase program announced on December 6, 2021. Such repurchase transaction was completed on April 4, 2022. On April 22, 2022, the Company, entered into Amendment No. 6 to the Credit Agreement (the “Amendment Agreement”). Under the terms of the Amendment Agreement, the Existing Credit Agreement was amended (the “Amended Credit Agreement”) to provide for: (i) a $ 1,200.0 seven-year term loan (the “Series B Term Loan”) and (ii) a $ 300.0 five-year revolving credit facility (the “Revolving Credit Facility”). The Series B Term Loan matures on April 22, 2029 and bears interest at a rate per annum of a secured overnight funding rate (“Term SOFR”) plus a margin of 3.25 % or a base rate (“ABR”) plus a margin of 2.25 %, subject to SOFR and ABR floors of 0.5% and 1.5%, respectively. The Company used the net proceeds from the Series B Term Loan to repay all amounts outstanding under the Company’s Existing Credit Agreement. The Revolving Credit Facility matures on April 22, 2027 and bears interest at a rate per annum of Term SOFR plus a margin ranging from 2.00 to 2.50 % or ABR plus a margin ranging from 1.00 to 1.50 %, subject to SOFR and ABR floors of 0.5% and 1.5%, respectively, with the margin on the Revolving Credit Facility determined based on the Company’s first lien net leverage ratio. The Company's interest rate derivatives continue to qualify as cash flow hedges when applied to the Amendment Agreement in accordance with ASC 815 and ASC 848.

Business and Basis of Present_2

Business and Basis of Presentation (Policies)	6 Months Ended
	Mar. 31, 2022
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation These consolidated financial statements have been prepared by the Company in accordance with accounting principles generally accepted in the United States of America (“GAAP”) for interim reporting and are unaudited. In the opinion of management, the accompanying unaudited consolidated financial statements include all adjustments, including normal, recurring accruals that are necessary for a fair presentation of the Company’s operations for the periods presented in conformity with GAAP. All intercompany activity and balances have been eliminated from the consolidated financial statements. The consolidated results of operations for the interim periods presented are not necessarily indicative of results for the full year. The Consolidated Balance Sheet as of September 30, 2021, presented herein, has been derived from the Company’s audited consolidated financial statements as of and for the fiscal year ended September 30, 2021, but does not include all disclosures required by GAAP, for annual financial statements. For a more complete discussion of the Company’s accounting policies and certain other information refer to the audited consolidated financial statements and the notes thereto included in the Company’s annual report on Form 10-K for the fiscal year ended September 30, 2021 , filed with the Securities and Exchange Commission (“SEC”).
Use of Estimates	Use of Estimates The preparation of the consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the period. On an ongoing basis, management reviews its estimates, including those related to allowances for doubtful accounts, revenue recognition, self-insurance reserves, estimates related to the Company’s assessment of goodwill for impairment, useful lives for depreciation and amortization, realizability of deferred tax assets, and litigation based on currently available information. Changes in facts and circumstances may result in revised estimates and actual results may differ from estimates.

Revenue (Tables)

Revenue (Tables)	6 Months Ended
	Mar. 31, 2022
Revenue from Contract with Customer [Abstract]
Schedule of Reportable Segment Revenues, Disaggregated by Revenue	The following table presents the Company’s reportable segment revenues, disaggregated by revenue type. The Company disaggregates revenue from contracts with customers into major services lines. The Company has determined that disaggregating revenue into these categories depicts how the nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factors. The Company’s reportable segments are Maintenance Services and Development Services. As noted in the business segment reporting information in Note 12 “Segments”, the Company’s reportable segments are Maintenance Services and Development Services. Three Months Ended Six Months Ended 2022 2021 2022 2021 Landscape Maintenance $ 345.2 $ 309.7 $ 747.4 $ 672.0 Snow Removal 208.2 226.0 244.2 281.8 Maintenance Services 553.4 535.7 991.6 953.8 Development Services 159.7 117.1 314.4 254.4 Eliminations ( 1.2 ) ( 0.9 ) ( 2.2 ) ( 1.9 ) Net service revenues $ 711.9 $ 651.9 $ 1,303.8 $ 1,206.3
Schedule of Contract Balances	Changes in Deferred revenue for the six month period ended March 31, 2022 were as follows: Deferred Balance, September 30, 2021 $ 48.2 Recognition of revenue ( 474.1 ) Deferral of revenue 507.4 Balance, March 31, 2022 $ 81.5

Property and Equipment, net (Ta

Property and Equipment, net (Tables)	6 Months Ended
	Mar. 31, 2022
Property, Plant and Equipment [Abstract]
Schedule of Property and Equipment, Net	Property and equipment, net consists of the following: Useful Life March 31, September 30, Land — $ 43.3 $ 42.2 Buildings and leasehold improvements 2 - 40 yrs. 44.3 38.6 Operating equipment 2 - 7 yrs. 277.1 239.1 Transportation vehicles 3 - 7 yrs. 314.6 288.4 Office equipment and software 3 - 10 yrs. 73.1 74.3 Construction in progress — 3.9 4.1 Property and equipment 756.3 686.7 Less: Accumulated depreciation 455.0 422.3 Property and equipment, net $ 301.3 $ 264.4

Intangible Assets, Goodwill a_2

Intangible Assets, Goodwill and Acquisitions (Tables)	6 Months Ended
	Mar. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Intangible Assets	Intangible assets as of March 31, 2022 and September 30, 2021 consisted of the following: March 31, 2022 September 30, 2021 Estimated Gross Accumulated Gross Accumulated Customer relationships 6 - 21 yrs. $ 711.7 $ ( 524.8 ) $ 694.9 $ ( 499.8 ) Trademarks 12 yrs. 3.8 ( 2.5 ) 3.8 ( 2.3 ) Non-compete agreements 5 yrs. 2.7 ( 1.9 ) 2.7 ( 1.7 ) Total intangible assets $ 718.2 $ ( 529.2 ) $ 701.4 $ ( 503.8 )
Summary of Goodwill	The following is a summary of the goodwill activity for the periods ended September 30, 2021 and March 31, 2022: Maintenance Development Total Balance, September 30, 2020 $ 1,680.4 $ 178.9 $ 1,859.3 Acquisitions 77.6 13.9 91.5 Balance, September 30, 2021 $ 1,758.0 $ 192.8 $ 1,950.8 Acquisitions (1) 30.1 36.9 67.0 Balance, March 31, 2022 $ 1,788.1 $ 229.7 $ 2,017.8 (1) The acquisitions adjustment includes the immaterial impact of foreign currency adjustments during the period.

Long-Term Debt (Tables)

Long-Term Debt (Tables)	6 Months Ended
	Mar. 31, 2022
Debt Disclosure [Abstract]
Schedule of Long-Term Debt	Long-term debt consists of the following: March 31, September 30, Series B term loan $ 996.8 $ 1,001.7 Receivables financing agreement 202.4 150.4 Revolving Credit Agreement $ 80.0 $ — Financing costs, net ( 9.5 ) ( 11.1 ) Total debt, net 1,269.7 1,141.0 Less: Current portion of long-term debt 10.4 10.4 Long-term debt, net $ 1,259.3 $ 1,130.6
Scheduled Maturities of Long-Term Debt	The following are the scheduled maturities of long-term debt for the remainder of fiscal 2022 and the following five fiscal years and thereafter, which do not include any estimated excess cash flow payments: 2022 $ 5.2 2023 90.4 2024 212.8 2025 972.2 2026 and thereafter — Total long-term debt 1,280.6 Less: Current maturities 10.4 Less: Original issue discount 1.4 Less: Financing costs 9.5 Total long-term debt, net $ 1,259.3

Fair Value Measurements and D_2

Fair Value Measurements and Derivative Instruments (Tables)	6 Months Ended
	Mar. 31, 2022
Derivative Instruments Gain Loss [Line Items]
Summary of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis	The following tables summarize the financial assets and liabilities measured at fair value on a recurring basis as of March 31, 2022 and September 30, 2021: March 31, 2022 Carrying Value Level 1 Level 2 Level 3 Other assets: Investments held by Rabbi Trust $ 13.1 $ 13.1 $ — $ — Interest rate swap contracts 1.6 — 1.6 — Total assets $ 14.7 $ 13.1 $ 1.6 $ — Other liabilities: Obligation to Rabbi Trust $ 13.1 $ 13.1 $ — $ — Total liabilities $ 13.1 $ 13.1 $ — $ — September 30, 2021 Carrying Value Level 1 Level 2 Level 3 Other assets: Investments held by Rabbi Trust $ 13.5 $ 13.5 $ — $ — Fuel hedges 1.2 — 1.2 — Total Assets $ 14.7 $ 13.5 $ 1.2 $ — Other liabilities: Interest rate swap contracts $ 3.6 $ — $ 3.6 $ — Obligation to Rabbi Trust 13.5 13.5 — — Total Liabilities $ 17.1 $ 13.5 $ 3.6 $ —
Interest Rate Swaps
Derivative Instruments Gain Loss [Line Items]
Summary of Effects on Consolidated Financial Statements of Designated As Cash Flow Hedges	The effects on the consolidated financial statements of the interest rate swaps which were designated as cash flow hedges were as follows: Three Months Ended Six Months Ended 2022 2021 2022 2021 Income recognized in Other comprehensive income $ 2.6 $ 0.2 $ 3.7 $ — Net (loss) reclassified from Accumulated other comprehensive ( 0.7 ) ( 0.7 ) ( 1.6 ) ( 5.2 )
Fuel Swap Contracts
Derivative Instruments Gain Loss [Line Items]
Summary of Effects on Consolidated Financial Statements of Designated As Cash Flow Hedges	The effects on the consolidated financial statements of the fuel swaps which were designated as cash flow hedges were as follows: Three Months Ended Six Months Ended 2022 2021 2022 2021 Income recognized in Other comprehensive income (loss) $ — $ 1.9 $ 0.2 $ 1.8 Net gain (loss) reclassified from Accumulated other — 0.4 1.5 ( 0.4 )

Income Taxes (Tables)

Income Taxes (Tables)	6 Months Ended
	Mar. 31, 2022
Income Tax Disclosure [Abstract]
Summary of Income Tax Benefit and Effective Income Tax Rate	The following table summarizes the Company’s income tax (benefit) expense and effective income tax rate for the three and six months ended March 31, 2022 and 2021. Three Months Ended Six Months Ended 2022 2021 2022 2021 Income (loss) before income taxes $ 0.6 $ 8.6 $ ( 16.8 ) $ ( 7.1 ) Income tax (benefit) expense ( 0.1 ) 2.3 ( 4.7 ) ( 1.4 ) Effective income tax rate - 16.7 % 26.7 % 28.0 % 19.7 %

Equity-Based Compensation (Tabl

Equity-Based Compensation (Tables)	6 Months Ended
	Mar. 31, 2022
Share-based Payment Arrangement [Abstract]
Summary of the Company Restricted Stock Award Activity	A summary of the Company’s restricted stock award activity for the six month period ended March 31, 2022 is presented in the following table: Shares Weighted-Avg Distribution Price per Share Outstanding at September 30, 2021 802,000 $ 14.31 Granted — — Less: Redeemed 229,000 $ 14.08 Less: Forfeited 23,000 $ 14.39 Outstanding at March 31, 2022 550,000 $ 14.40
Summary of the Company Restricted Stock Unit Activity	A summary of the Company’s restricted stock unit activity for the six month period ended March 31, 2022 is presented in the following table: Shares Weighted-Avg Distribution Price per Share Outstanding at September 30, 2021 1,299,000 $ 15.14 Granted 759,000 $ 14.94 Vested 394,000 $ 15.48 Forfeited 103,000 $ 15.02 Outstanding at March 31, 2022 1,561,000 $ 15.03
Summary of the Company Stock Option Activity	A summary of the Company’s stock option activity for the six month period ended March 31, 2022 is presented in the following table: Shares Weighted-Avg Exercise Price per Share Outstanding at September 30, 2021 7,017,000 $ 21.55 Granted 783,000 $ 15.04 Exercised 1,000 $ 13.49 Forfeited 122,000 $ 17.55 Outstanding at March 31, 2022 7,677,000 $ 19.05 Vested and exercisable at March 31, 2022 4,220,000 $ 20.03 Expected to vest after March 31, 2022 3,457,000 $ 17.86

Segments (Tables)

Segments (Tables)	6 Months Ended
	Mar. 31, 2022
Segment Reporting [Abstract]
Summary of Certain Financial Data For Each of Segments	The following is a summary of certain financial data for each of the segments: Three Months Ended Six Months Ended 2022 2021 2022 2021 Maintenance Services $ 553.4 $ 535.7 $ 991.6 $ 953.8 Development Services 159.7 117.1 314.4 254.4 Eliminations ( 1.2 ) ( 0.9 ) ( 2.2 ) ( 1.9 ) Net Service Revenues $ 711.9 $ 651.9 $ 1,303.8 $ 1,206.3 Maintenance Services $ 62.9 $ 72.3 $ 108.2 $ 121.9 Development Services 12.8 10.9 27.3 27.9 Corporate ( 16.0 ) ( 16.4 ) ( 33.2 ) ( 30.5 ) Adjusted EBITDA (1) $ 59.7 $ 66.8 $ 102.3 $ 119.3 Maintenance Services $ 27.1 $ 15.3 $ 48.9 $ 24.2 Development Services 6.9 2.0 8.1 2.3 Corporate 1.7 0.9 7.2 1.4 Capital Expenditures $ 35.7 $ 18.2 $ 64.2 $ 27.9 (1) Presented below is a reconciliation of Net income (loss) to Adjusted EBITDA: Three Months Ended Six Months Ended 2022 2021 2022 2021 Net income (loss) $ 0.7 $ 6.3 $ ( 12.1 ) $ ( 5.7 ) Interest expense 10.1 9.6 19.7 23.1 Income tax (benefit) expense ( 0.1 ) 2.3 ( 4.7 ) ( 1.4 ) Depreciation expense 24.4 20.7 45.8 42.3 Amortization expense 12.0 12.5 25.5 26.4 Business transformation and integration costs (a) 2.4 6.2 8.3 12.8 Offering-related expenses (b) — — — 0.2 Equity-based compensation (c) 4.6 5.3 9.4 10.2 COVID-19 related expenses (d) 5.6 3.9 10.4 11.4 Adjusted EBITDA $ 59.7 $ 66.8 $ 102.3 $ 119.3 (a) Business transformation and integration costs consist of (i) severance and related costs; (ii) business integration costs and (iii) information technology infrastructure, transformation costs, and other. Three Months Ended Six Months Ended (in millions) 2022 2021 2022 2021 Severance and related costs $ — $ — $ 0.3 $ 0.2 Business integration (e) 0.5 2.1 4.5 5.7 IT infrastructure, transformation, and other (f) 1.9 4.1 3.5 6.9 Business transformation and integration costs $ 2.4 $ 6.2 $ 8.3 $ 12.8 (b) Represents transaction related expenses incurred for IPO related litigation and completed or contemplated subsequent registration statements. (c) Represents equity-based compensation expense and related taxes recognized for equity incentive plans outstanding . (d) Represents expenses related to the Company’s response to the COVID-19 pandemic, principally temporary and incremental salary and related expenses, personal protective equipment, cleaning and supply purchases, and other. (e) Represents isolated expenses specifically related to the integration of acquired companies such as one-time employee retention costs, employee onboarding and training costs, and fleet and uniform rebranding costs. The Company excludes Business integration costs from the measures disclosed above since such expenses vary in amount due to the number of acquisitions and size of acquired companies as well as factors specific to each acquisition, and as a result lack predictability as to occurrence and/or timing, and create a lack of comparability between periods. (f) Represents expenses related to distinct initiatives, typically significant enterprise-wide changes. Such expenses are excluded from the measures disclosed above since such expenses vary in amount based on occurrence as well as factors specific to each of the activities, are outside of the normal operations of the business, and create a lack of comparability between periods.

Earnings (Loss) Per Share of _2

Earnings (Loss) Per Share of Common Stock (Tables)	6 Months Ended
	Mar. 31, 2022
Earnings Per Share [Abstract]
Reconciliation of Numerator and Denominator for Basic and Diluted Earnings (loss) Per Share Calculation	Set forth below is a reconciliation of the numerator and denominator for basic and diluted earnings (loss) per share calculation for the periods indicated: Three Months Ended Six Months Ended 2022 2021 2022 2021 Numerator: Net income (loss) available to common stockholders $ 0.7 $ 6.3 $ ( 12.1 ) $ ( 5.7 ) Denominator: Weighted average number of common shares outstanding – basic 100,282,000 105,183,000 102,705,000 105,165,000 Basic income (loss) per share $ 0.01 $ 0.06 $ ( 0.12 ) $ ( 0.05 ) Weighted average number of common shares outstanding – diluted 100,608,000 105,670,000 102,705,000 105,165,000 Diluted income (loss) per share $ 0.01 $ 0.06 $ ( 0.12 ) $ ( 0.05 ) Other Information: Weighted average number of anti-dilutive options and restricted stock (a) 4,005,787 7,719,000 5,363,000 7,754,000 (a) Weighted average number of anti-dilutive options is based upon the average closing price of the Company’s common stock on the NYSE for the period.

Business and Basis of Present_3

Business and Basis of Presentation - Additional Information (Details)	6 Months Ended
	Mar. 31, 2022Segment
Accounting Policies [Abstract]
Number of reportable segments	2

Revenue - Additional Informatio

Revenue - Additional Information (Details) $ in Millions	6 Months Ended
	Mar. 31, 2022USD ($)
Disaggregation Of Revenue [Line Items]
Revenue, remaining performance obligations, amount	$ 386
Contract with customer billed revenue	84.2
Contract with customer unbilled revenue additions	$ 70.1
Revenue, practical expedient, financing component	true
Minimum | Maintenance Services
Disaggregation Of Revenue [Line Items]
Recurring annual contract period	1 year
Maximum | Maintenance Services
Disaggregation Of Revenue [Line Items]
Recurring annual contract period	3 years

Revenue - Schedule of Reportabl

Revenue - Schedule of Reportable Segment Revenues, Disaggregated by Revenue (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021
Disaggregation Of Revenue [Line Items]
Net service revenues	$ 711.9	$ 651.9	$ 1,303.8	$ 1,206.3
Operating Segments | Landscape Maintenance
Disaggregation Of Revenue [Line Items]
Net service revenues	345.2	309.7	747.4	672
Operating Segments | Snow Removal
Disaggregation Of Revenue [Line Items]
Net service revenues	208.2	226	244.2	281.8
Operating Segments | Maintenance Services
Disaggregation Of Revenue [Line Items]
Net service revenues	553.4	535.7	991.6	953.8
Operating Segments | Development Services
Disaggregation Of Revenue [Line Items]
Net service revenues	159.7	117.1	314.4	254.4
Eliminations
Disaggregation Of Revenue [Line Items]
Net service revenues	$ (1.2)	$ (0.9)	$ (2.2)	$ (1.9)

Revenue - Additional Informat_2

Revenue - Additional Information (Details 1)	Mar. 31, 2022	Dec. 31, 2021
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2021-10-01
Disaggregation Of Revenue [Line Items]
Remaining performance obligations, percentage		52.00%
Remaining performance obligations, expected satisfaction period	12 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2022-10-01
Disaggregation Of Revenue [Line Items]
Remaining performance obligations, percentage	48.00%
Remaining performance obligations, expected satisfaction period	12 months

Revenue - Schedule of Changes i

Revenue - Schedule of Changes in Deferred Revenue (Details) $ in Millions	6 Months Ended
	Mar. 31, 2022USD ($)
Revenue from Contract with Customer [Abstract]
Balance, September 30, 2021	$ 48.2
Recognition of revenue	(474.1)
Deferral of revenue	507.4
Balance, December 31, 2021	$ 81.5

Accounts Receivable, Net - Addi

Accounts Receivable, Net - Additional Information (Details) - USD ($) $ in Millions	Mar. 31, 2022	Sep. 30, 2021
Receivables [Abstract]
Accounts receivable	$ 411.4	$ 378.9
Allowance for doubtful accounts	4.3	3.2
Amounts of retention on incomplete project	$ 44.5	$ 43.4

Property and Equipment, Net - S

Property and Equipment, Net - Schedule of Property and Equipment, Net (Details) - USD ($) $ in Millions	6 Months Ended
	Mar. 31, 2022	Sep. 30, 2021
Property Plant And Equipment [Line Items]
Property and equipment	$ 756.3	$ 686.7
Less: Accumulated depreciation	455	422.3
Property and equipment, net	301.3	264.4
Land
Property Plant And Equipment [Line Items]
Property and equipment	43.3	42.2
Building and Leasehold Improvements
Property Plant And Equipment [Line Items]
Property and equipment	44.3	38.6
Operating Equipment
Property Plant And Equipment [Line Items]
Property and equipment	277.1	239.1
Transportation Vehicles
Property Plant And Equipment [Line Items]
Property and equipment	314.6	288.4
Office Equipment and Software
Property Plant And Equipment [Line Items]
Property and equipment	73.1	74.3
Construction in Progress
Property Plant And Equipment [Line Items]
Property and equipment	$ 3.9	$ 4.1
Minimum | Building and Leasehold Improvements
Property Plant And Equipment [Line Items]
Property and equipment, Useful Life	2 years
Minimum | Operating Equipment
Property Plant And Equipment [Line Items]
Property and equipment, Useful Life	2 years
Minimum | Transportation Vehicles
Property Plant And Equipment [Line Items]
Property and equipment, Useful Life	3 years
Minimum | Office Equipment and Software
Property Plant And Equipment [Line Items]
Property and equipment, Useful Life	3 years
Maximum | Building and Leasehold Improvements
Property Plant And Equipment [Line Items]
Property and equipment, Useful Life	40 years
Maximum | Operating Equipment
Property Plant And Equipment [Line Items]
Property and equipment, Useful Life	7 years
Maximum | Transportation Vehicles
Property Plant And Equipment [Line Items]
Property and equipment, Useful Life	7 years
Maximum | Office Equipment and Software
Property Plant And Equipment [Line Items]
Property and equipment, Useful Life	10 years

Property and Equipment, Net - A

Property and Equipment, Net - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021
Property, Plant and Equipment [Abstract]
Depreciation expense	$ 24.4	$ 20.7	$ 45.8	$ 42.3

Intangible Assets, Goodwill a_3

Intangible Assets, Goodwill and Acquisitions - Additional Information (Details) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2022USD ($)Company	Mar. 31, 2021USD ($)Company	Mar. 31, 2022USD ($)Company	Mar. 31, 2021USD ($)Company
Finite Lived Intangible Assets [Line Items]
Amortization of intangible assets	$ 12	$ 12.5	$ 25.5	$ 26.4
Number of unrelated maintenance services companies acquired | Company	6	4	6	4
Consideration paid, net of cash acquired			$ 84.4	$ 75.7
Number of unrelated companies allocated between maintenance services and development services | Company	1	2	1	2
Unrelated Maintenance Services Companies
Finite Lived Intangible Assets [Line Items]
Acquisition of operations, Percentage	100.00%	100.00%	100.00%	100.00%
Consideration paid, net of cash acquired			$ 84.4	$ 75.7
Customer Relationships
Finite Lived Intangible Assets [Line Items]
Identifiable assets acquired related to intangible assets	$ 16.8	$ 18	$ 16.8	$ 18

Intangible Assets, Goodwill a_4

Intangible Assets, Goodwill and Acquisitions - Schedule of Intangible Assets (Details) - USD ($) $ in Millions	6 Months Ended
	Mar. 31, 2022	Sep. 30, 2021
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 718.2	$ 701.4
Accumulated Amortization	529.2	503.8
Customer Relationships
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	711.7	694.9
Accumulated Amortization	$ 524.8	499.8
Customer Relationships | Minimum
Finite Lived Intangible Assets [Line Items]
Useful Life	6 years
Customer Relationships | Maximum
Finite Lived Intangible Assets [Line Items]
Useful Life	21 years
Trademarks
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 3.8	3.8
Accumulated Amortization	$ 2.5	2.3
Trademarks | Maximum
Finite Lived Intangible Assets [Line Items]
Useful Life	12 years
Noncompete Agreements
Finite Lived Intangible Assets [Line Items]
Useful Life	5 years
Gross Carrying Amount	$ 2.7	2.7
Accumulated Amortization	$ 1.9	$ 1.7

Intangible Assets, Goodwill a_5

Intangible Assets, Goodwill and Acquisitions - Summary of Goodwill (Details) - USD ($) $ in Millions	6 Months Ended		12 Months Ended
	Mar. 31, 2022		Sep. 30, 2021
Goodwill [Line Items]
Beginning balance	$ 1,950.8		$ 1,859.3
Acquisitions	67	[1]	91.5
Ending balance	2,017.8		1,950.8
Maintenance Services
Goodwill [Line Items]
Beginning balance	1,758		1,680.4
Acquisitions	30.1	[1]	77.6
Ending balance	1,788.1		1,758
Development Services
Goodwill [Line Items]
Beginning balance	192.8		178.9
Acquisitions	36.9	[1]	13.9
Ending balance	$ 229.7		$ 192.8
[1]	The acquisitions adjustment includes the immaterial impact of foreign currency adjustments during the period.

Long-Term Debt - Schedule of Lo

Long-Term Debt - Schedule of Long-Term Debt (Details) - USD ($) $ in Millions	Mar. 31, 2022	Sep. 30, 2021
Debt Instrument [Line Items]
Financing costs, net	$ (9.5)	$ (11.1)
Total debt, net	1,269.7	1,141
Less: Current portion of long-term debt	10.4	10.4
Long-term debt, net	1,259.3	1,130.6
Series B Term Loan
Debt Instrument [Line Items]
Debt instruments net of original issue discount	996.8	1,001.7
Revolving Credit Agreement
Debt Instrument [Line Items]
Debt instruments net of original issue discount	80
Receivables Financing Agreement
Debt Instrument [Line Items]
Debt instruments net of original issue discount	$ 202.4	$ 150.4

Long-Term Debt - Additional Inf

Long-Term Debt - Additional Information (Details) - USD ($) $ in Millions	Apr. 22, 2022	Feb. 21, 2019	Aug. 15, 2018	Apr. 28, 2017	Dec. 18, 2013	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021	Sep. 30, 2021	Sep. 20, 2021
Debt Instrument [Line Items]
Debt repayments						$ 5.2	$ 5.2
Debt voluntary repayment						95	24.6
Debt borrowings during the period						147	24
Long-term debt, fair value						1,191.8			$ 1,148.7
Receivables Financing Agreement | Wholly-owned Subsidiary
Debt Instrument [Line Items]
Borrowings repaid		$ 200		$ 175				$ 250		$ 235
Debt instrument, maturity date		Feb. 20, 2022		Apr. 27, 2020
Debt voluntary repayment						147	24.5
Debt borrowings during the period						95	24.6
Credit Agreement | First Lien Credit Facility Term Loans
Debt Instrument [Line Items]
Credit agreement date					Dec. 18, 2013
Debt instrument, term					7 years
Borrowings repaid					$ 1,460
Credit Agreement | First Lien Revolving Credit Facility
Debt Instrument [Line Items]
Debt instrument, term					5 years
Borrowings repaid					$ 210
Amended Credit Agreement | First Lien Revolving Credit Facility
Debt Instrument [Line Items]
Debt instrument, term			5 years
Borrowings repaid			$ 260
Amended Credit Agreement | Series B Term Loan
Debt Instrument [Line Items]
Debt instrument, term			7 years
Borrowings repaid			$ 1,037
Debt instrument, original discount			$ 2.8
Debt instrument, effective interest rate			2.50%
Debt instrument, basis spread on variable rate			2.50%
Debt repayments						5.2	5.2
Debt instrument, maturity date			Aug. 15, 2025
Amended Credit Agreement | Series B Term Loan | Subsequent Event
Debt Instrument [Line Items]
Debt instrument, term	7 years
Borrowings repaid	$ 1,200
Debt instrument, maturity date	Apr. 22, 2029
Previous Revolving Credit Facility | First Lien Revolving Credit Facility
Debt Instrument [Line Items]
Borrowings repaid					$ 210
Revolving Credit Facility | First Lien Revolving Credit Facility
Debt Instrument [Line Items]
Debt instrument, term			5 years
Borrowings repaid			$ 260
Debt repayments						$ 80	$ 0
Debt instrument, maturity date			Aug. 15, 2023
Revolving Credit Facility | First Lien Revolving Credit Facility | LIBOR | Minimum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			2.00%
Revolving Credit Facility | First Lien Revolving Credit Facility | LIBOR | Maximum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			2.50%
Revolving Credit Facility | Series B Term Loan | Subsequent Event
Debt Instrument [Line Items]
Debt instrument, term	5 years
Borrowings repaid	$ 300
Debt instrument, maturity date	Apr. 22, 2027

Long-Term Debt - Scheduled Matu

Long-Term Debt - Scheduled Maturities of Long-Term Debt (Details) - USD ($) $ in Millions	Mar. 31, 2022	Sep. 30, 2021
Debt Disclosure [Abstract]
2022	$ 5.2
2023	90.4
2024	212.8
2025	972.2
Total long-term debt	1,280.6
Less: Current portion of long-term debt	10.4	$ 10.4
Less: Original issue discount	1.4
Less: Financing costs	9.5
Long-term debt, net	$ 1,259.3	$ 1,130.6

Fair Value Measurements and D_3

Fair Value Measurements and Derivative Instruments - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Dec. 31, 2021	Mar. 31, 2022	Sep. 30, 2021
Interest Rate Contracts
Derivative [Line Items]
Notional amount		$ 500	$ 500
Interest Rate Swaps
Derivative [Line Items]
Net deferred gain on interest rate swap net of taxes expected to be recognized over the next 12 months		$ 1.2
Maximum
Derivative [Line Items]
Percentage of participants compensation deferred	70.00%

Fair Value Measurements and D_4

Fair Value Measurements and Derivative Instruments - Summary of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Millions	Mar. 31, 2022	Sep. 30, 2021
Fuel Swap Contracts
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total assets		$ 0
Other Liabilities | Interest Rate Swaps
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total liabilities
Investment Held by Rabbi Trust
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total assets		0
Investment Held by Rabbi Trust | Other Liabilities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total liabilities		13.5
Recurring | Carrying Value | Other Assets
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total assets	$ 14.7	14.7
Recurring | Carrying Value | Other Assets | Interest Rate Swaps
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total assets	1.6
Recurring | Carrying Value | Other Assets | Fuel Swap Contracts
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total assets		1.2
Recurring | Carrying Value | Other Liabilities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total liabilities	13.1	17.1
Recurring | Carrying Value | Other Liabilities | Interest Rate Swaps
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total liabilities		3.6
Recurring | Investment Held by Rabbi Trust | Carrying Value | Other Assets
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total assets	13.1	13.5
Recurring | Investment Held by Rabbi Trust | Carrying Value | Other Liabilities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total liabilities	13.1
Recurring | Investment Held by Rabbi Trust | Carrying Value | Other Liabilities | Fuel Swap Contracts
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total liabilities		13.5
Recurring | Level 1 | Other Assets
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total assets	13.1	13.5
Recurring | Level 1 | Other Assets | Interest Rate Swaps
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total assets	0
Recurring | Level 1 | Other Liabilities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total liabilities	13.1	13.5
Recurring | Level 1 | Investment Held by Rabbi Trust | Other Assets
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total assets	13.1	13.5
Recurring | Level 1 | Investment Held by Rabbi Trust | Other Liabilities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total liabilities	13.1
Recurring | Level 2 | Other Assets
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total assets		1.2
Recurring | Level 2 | Other Assets | Interest Rate Swaps
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total assets	1.6
Recurring | Level 2 | Other Assets | Fuel Swap Contracts
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total assets		1.2
Recurring | Level 2 | Other Liabilities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total liabilities		3.6
Recurring | Level 2 | Other Liabilities | Interest Rate Swaps
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total liabilities		3.6
Recurring | Level 2 | Investment Held by Rabbi Trust | Other Assets
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total assets
Recurring | Level 2 | Investment Held by Rabbi Trust | Other Liabilities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total liabilities
Recurring | Level 2 | Investment Held by Rabbi Trust | Other Liabilities | Fuel Swap Contracts
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total liabilities		0
Recurring | Level 3 | Other Assets
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total assets		0
Recurring | Level 3 | Other Assets | Interest Rate Swaps
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total assets	0
Recurring | Level 3 | Other Assets | Fuel Swap Contracts
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total assets		0
Recurring | Level 3 | Other Liabilities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total liabilities		0
Recurring | Level 3 | Other Liabilities | Interest Rate Swaps
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total liabilities		0
Recurring | Level 3 | Investment Held by Rabbi Trust | Other Assets
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total assets		0
Recurring | Level 3 | Investment Held by Rabbi Trust | Other Liabilities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Total liabilities		$ 0

Fair Value Measurements and D_5

Fair Value Measurements and Derivative Instruments - Summary of Effects on Consolidated Financial Statements of Designated As Cash Flow Hedges (Details) - Cash Flow Hedges - Designated - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021
Interest Rate Swaps
Derivative Instruments Gain Loss [Line Items]
Income recognized in Other comprehensive income (loss)	$ 2.6	$ 0.2	$ 3.7	$ 0
Interest Rate Swaps | Interest Expense
Derivative Instruments Gain Loss [Line Items]
Net (loss) income reclassified from Accumulated other comprehensive Income (loss) into Interest expense/Cost of services provided	(0.7)	(0.7)	(1.6)	(5.2)
Fuel Swap Contracts
Derivative Instruments Gain Loss [Line Items]
Income recognized in Other comprehensive income (loss)	0	1.9	0.2	1.8
Fuel Swap Contracts | Cost of Services Provided
Derivative Instruments Gain Loss [Line Items]
Income recognized in Other comprehensive income (loss)		$ 0.4		$ (0.4)
Net (loss) income reclassified from Accumulated other comprehensive Income (loss) into Interest expense/Cost of services provided	$ 0		$ 1.5

Income Taxes - Summary of Incom

Income Taxes - Summary of Income Tax Benefit and Effective Income Tax Rate (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021
Income Tax Disclosure [Abstract]
Income (loss) before income taxes	$ 0.6	$ 8.6	$ (16.8)	$ (7.1)
Income tax (benefit) expense	$ 0.1	$ (2.3)	$ 4.7	$ 1.4
Effective income tax rate	16.70%	26.70%	28.00%	19.70%

Equity-Based Compensation - Add

Equity-Based Compensation - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions	Nov. 18, 2021	Nov. 15, 2021	Nov. 16, 2020	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021	Sep. 30, 2021	Mar. 10, 2020	Oct. 22, 2018
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Granted | shares						783,000,000,000
Number of shares exercised						1,000,000,000
Equity-based compensation				$ 4.6	$ 5.3	$ 9.3	$ 10.2
Unrecognized compensation cost				$ 31.8		$ 31.8		$ 25.6
Unamortized value of outstanding stock-based compensation, weighted average remaining life						1 year 4 months 24 days		1 year 2 months 12 days
Amended and Restated 2018 Omnibus Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares of common stock that may be issued									18,650,000
ESPP
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock shares available for sale										1,100,000
Common stock shares issued		112,000	120,000
Restricted Stock Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Issued shares of common stock				550,000,000,000		550,000,000,000		802,000
RSUs Forfeited						23,000,000,000
Restricted Stock Units (RSUs) [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Issued shares of common stock				1,561,000		1,561,000		1,299,000
Vesting period						4 years
Non-cash equity-based compensation expense over the requisite service period						$ 10
Stock options weighted average grant date fair value						$ 14.94
Number of shares exercised						394,000,000,000
RSUs Forfeited						103,000,000,000
Common stock shares issued						759,000,000,000
Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted average exercise price	$ 15.04
Vesting period	4 years
Non-cash equity-based compensation expense over the requisite service period	$ 4.7
Stock options weighted average grant date fair value	$ 6.84
Number of shares exercised						1,000
Number of shares forfeited						122,000
Common stock shares issued	783,000,000,000

Equity-Based Compensation - Sum

Equity-Based Compensation - Summary of the Company Restricted Stock Award Activity (Details) - $ / shares	6 Months Ended
	Mar. 31, 2022	Sep. 30, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-Avg Purchase Price per Share, Beginning Balance	$ 19.05	$ 21.55
Granted, weighted average exercise price	15.04
Exercised, Weighted Average Exercise Price	13.49
Forfeited, weighted average exercise price	17.55
Weighted Average Exercise Price, Outstanding at March 31, 2022	$ 19.05
Restricted Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Beginning balance, Outstanding | shares	802,000
Granted | shares	0
Exercised | shares	229,000,000,000
Forfeited | shares	23,000,000,000
Ending balance, Outstanding | shares	550,000,000,000
Weighted-Avg Purchase Price per Share, Beginning Balance	$ 14.40	$ 14.31
Granted, weighted average exercise price	0
Exercised, Weighted Average Exercise Price	14.08
Forfeited, weighted average exercise price	14.39
Weighted Average Exercise Price, Outstanding at March 31, 2022	$ 14.40

Equity-Based Compensation - S_2

Equity-Based Compensation - Summary of the Company Restricted Stock Unit Activity (Details)	6 Months Ended
	Mar. 31, 2022$ / sharesshares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted Average Exercise Price, Outstanding at September 30, 2021	$ 21.55
Granted, weighted average exercise price	15.04
Forfeited, weighted average exercise price	17.55
Weighted Average Exercise Price, Outstanding at March 31, 2022	$ 19.05
Restricted Stock Units (RSUs) [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Beginning balance, Outstanding | shares | shares	1,299,000
Granted | shares | shares	759,000,000,000
Vested | shares | shares	394,000,000,000
Forfeited | shares | shares	103,000,000,000
Ending balance, Outstanding | shares | shares	1,561,000
Weighted Average Exercise Price, Outstanding at September 30, 2021	$ 15.14
Granted, weighted average exercise price	14.94
Vested, weighted average exercise price	15.48
Forfeited, weighted average exercise price	15.02
Weighted Average Exercise Price, Outstanding at March 31, 2022	$ 15.03

Equity-Based Compensation - S_3

Equity-Based Compensation - Summary of Stock Options Activity (Details)	6 Months Ended
	Mar. 31, 2022$ / sharesshares
Share-based Payment Arrangement [Abstract]
Outstanding at September 30, 2021 | shares | shares	7,017,000
Granted | shares | shares	783,000,000,000
Exercised | shares | shares	1,000,000,000
Forfeited | shares | shares	122,000,000,000
Outstanding at March 31, 2022 | shares | shares	7,677,000,000,000
Stock option vested and exercisable upon issuance | shares	4,220,000,000,000
Expected to vest after March 31, 2022 | shares	3,457,000,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Weighted Average Exercise Price, Outstanding at September 30, 2021 | $ / shares	$ 21.55
Granted, weighted average exercise price | $ / shares	15.04
Exercised, Weighted Average Exercise Price | $ / shares	13.49
Forfeited, weighted average exercise price | $ / shares	17.55
Weighted Average Exercise Price, Outstanding at March 31, 2022 | $ / shares	19.05
Weighted Average Exercise Price, Vested and Exercisable at March 31, 2022 | $ / shares	20.03
Weighted Average Exercise Price, Expected to vest after March 31, 2022 | $ / shares	$ 17.86

Commitment and Contingencies -

Commitment and Contingencies - Additional Information (Details) - USD ($) $ in Millions	Mar. 31, 2022	Sep. 30, 2021
Commitments And Contingencies [Line Items]
Reserve for unpaid and incurred but not reported claims, amount	$ 152.5	$ 154.7
Reserve for unpaid and incurred but not reported claims, classified in current liabilities	47.9	50.2
Reserve for unpaid and incurred but not reported claims, classified in non-current liabilities	104.6	104.5
Claims recoverable from third party insurance carriers	22.6	30.5
Other Current Assets
Commitments And Contingencies [Line Items]
Claims recoverable from third party insurance carriers	6.3	8.2
Other Assets
Commitments And Contingencies [Line Items]
Claims recoverable from third party insurance carriers	$ 16.3	$ 22.3

Segments - Additional Informati

Segments - Additional Information (Details)	6 Months Ended
	Mar. 31, 2022Segment
Segment Reporting [Abstract]
Number of operating segments	2

Segments - Summary of Certain F

Segments - Summary of Certain Financial Data For Each of Segments (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021
Segment Reporting Information [Line Items]
Net Service Revenues		$ 711.9	$ 651.9	$ 1,303.8	$ 1,206.3
Adjusted EBITDA	[1]	59.7	66.8	102.3	119.3
Capital Expenditures		35.7	18.2	64.2	27.9
Net income (loss)		0.7	6.3	(12.1)	(5.7)
Interest expense		10.1	9.6	19.7	23.1
Income tax (benefit) expense		0.1	(2.3)	4.7	1.4
Depreciation expense		24.4	20.7	45.8	42.3
Amortization expense		12	12.5	25.5	26.4
Business transformation and integration costs	[2]	2.4	6.2	8.3	12.8
Offering-related expenses	[3]	0	0	0	0.2
Equity-based compensation	[4]	4.6	5.3	9.4	10.2
COVID-19 related expenses	[5]	5.6	3.9	10.4	11.4
Severance and related costs				0.3	0.2
Business integration	[6]	0.5	2.1	4.5	5.7
IT infrastructure, transformation, and other	[7]	1.9	4.1	3.5	6.9
Corporate
Segment Reporting Information [Line Items]
Adjusted EBITDA		(16)	(16.4)	(33.2)	(30.5)
Capital Expenditures		1.7	0.9	7.2	1.4
Operating Segments | Maintenance Services
Segment Reporting Information [Line Items]
Net Service Revenues		553.4	535.7	991.6	953.8
Adjusted EBITDA		62.9	72.3	108.2	121.9
Capital Expenditures		27.1	15.3	48.9	24.2
Operating Segments | Development Services
Segment Reporting Information [Line Items]
Net Service Revenues		159.7	117.1	314.4	254.4
Adjusted EBITDA		12.8	10.9	27.3	27.9
Capital Expenditures		6.9	2	8.1	2.3
Eliminations
Segment Reporting Information [Line Items]
Net Service Revenues		$ (1.2)	$ (0.9)	$ (2.2)	$ (1.9)
[1]	Presented below is a reconciliation of Net income (loss) to Adjusted EBITDA:
[2]	Business transformation and integration costs consist of (i) severance and related costs; (ii) business integration costs and (iii) information technology infrastructure, transformation costs, and other.
[3]	Represents transaction related expenses incurred for IPO related litigation and completed or contemplated subsequent registration statements.
[4]	Represents equity-based compensation expense and related taxes recognized for equity incentive plans outstanding
[5]	Represents expenses related to the Company’s response to the COVID-19 pandemic, principally temporary and incremental salary and related expenses, personal protective equipment, cleaning and supply purchases, and other.
[6]	Represents isolated expenses specifically related to the integration of acquired companies such as one-time employee retention costs, employee onboarding and training costs, and fleet and uniform rebranding costs. The Company excludes Business integration costs from the measures disclosed above since such expenses vary in amount due to the number of acquisitions and size of acquired companies as well as factors specific to each acquisition, and as a result lack predictability as to occurrence and/or timing, and create a lack of comparability between periods.
[7]	Represents expenses related to distinct initiatives, typically significant enterprise-wide changes. Such expenses are excluded from the measures disclosed above since such expenses vary in amount based on occurrence as well as factors specific to each of the activities, are outside of the normal operations of the business, and create a lack of comparability between periods.

Earnings (Loss) Per Share of _3

Earnings (Loss) Per Share of Common Stock - Reconciliation of Numerator and Denominator for Basic and Diluted Earnings (loss) Per Share Calculation (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		3 Months Ended		6 Months Ended
		Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021
Earnings Per Share [Abstract]
Net income (loss) available to common stockholders		$ 0.7	$ 6.3	$ (12.1)	$ (5.7)
Weighted average number of common shares outstanding – basic		100,282,000	105,183,000	102,705,000	105,165,000
Basic income (loss) per share		$ 0.01	$ 0.06	$ (0.12)	$ (0.05)
Weighted average number of common shares outstanding – diluted		100,608,000	105,670,000	102,705,000	105,165,000
Diluted income (loss) per share		$ 0.01	$ 0.06	$ (0.12)	$ (0.05)
Weighted average number of anti-dilutive options and restricted stock	[1]	4,005,787	7,719,000	5,363,000	7,754,000
[1]	Weighted average number of anti-dilutive options is based upon the average closing price of the Company’s common stock on the NYSE for the period.

Subsequent Events - Additional

Subsequent Events - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions	Apr. 22, 2022	Apr. 04, 2022	Aug. 15, 2018
Series B Term Loan | Amended Credit Agreement
Subsequent Event [Line Items]
Borrowings repaid			$ 1,037
Debt instrument, term			7 years
Debt instrument, maturity date			Aug. 15, 2025
Debt instrument, basis spread on variable rate			2.50%
Subsequent Event
Subsequent Event [Line Items]
Stock Repurchased During Period Shares		5,906,954
Price per share		$ 12.33
Subsequent Event | Series B Term Loan | Amended Credit Agreement
Subsequent Event [Line Items]
Borrowings repaid	$ 1,200
Debt instrument, term	7 years
Debt instrument, maturity date	Apr. 22, 2029
Subsequent Event | Series B Term Loan | Revolving Credit Facility
Subsequent Event [Line Items]
Borrowings repaid	$ 300
Debt instrument, term	5 years
Debt instrument, maturity date	Apr. 22, 2027
Subsequent Event | Series B Term Loan | Revolving Credit Facility | SOFR
Subsequent Event [Line Items]
Debt instrument, basis spread on variable rate	3.25%
Subsequent Event | Series B Term Loan | Revolving Credit Facility | SOFR | Minimum
Subsequent Event [Line Items]
Debt instrument, basis spread on variable rate	2.00%
Subsequent Event | Series B Term Loan | Revolving Credit Facility | SOFR | Maximum
Subsequent Event [Line Items]
Debt instrument, basis spread on variable rate	2.50%
Subsequent Event | Series B Term Loan | Revolving Credit Facility | ABR
Subsequent Event [Line Items]
Debt instrument, basis spread on variable rate	2.25%
Subsequent Event | Series B Term Loan | Revolving Credit Facility | ABR | Minimum
Subsequent Event [Line Items]
Debt instrument, basis spread on variable rate	1.00%
Subsequent Event | Series B Term Loan | Revolving Credit Facility | ABR | Maximum
Subsequent Event [Line Items]
Debt instrument, basis spread on variable rate	1.50%