Business and Basis of Presentation	9 Months Ended
Jun. 30, 2018
Accounting Policies [Abstract]
Business and Basis of Presentation	1.Business and Basis of Presentation BrightView Holdings, Inc. (“BrightView” or the “Company”) 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. As of June 30, 2018, the Company was a wholly-owned subsidiary of BrightView Parent L.P. (“Parent”), an affiliate of KKR & Co. Inc., (formerly KKR & Co. L.P., “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 Acquisition”). On March 15, 2018, the Company changed its name from BrightView Acquisition Holdings, Inc. to BrightView Holdings, Inc. On July 2, 2018, the Company completed an initial public offering of its common stock (the “IPO”). See “Initial Public Offering” below. 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, 2017, presented herein, has been derived from the Company’s audited consolidated financial statements as of and for the nine months ended September 30, 2017, but does not include all disclosures required by GAAP. For a more complete discussion of the Company’s accounting policies and certain other information refer to the consolidated financial statements included in the Company’s 2017 audited consolidated financial statements and the notes thereto included in the Company’s final prospectus dated June 27, 2018 (the “Prospectus”), as filed with the Securities and Exchange Commission (the “SEC”) on June 29, 2018 pursuant to Rule 424(b)(4) under the Securities Act of 1933, as amended (the “Securities Act”). Use of Estimates The preparation of 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 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. Initial Public Offering On July 2, 2018, the Company completed the IPO in which the Company issued and sold 24,495 shares of common stock. The shares sold in the offering were registered under the Securities Act pursuant to the Company’s Registration Statement on Form S-1 (File No. 333-225277) (the “Registration Statement”), which was declared effective by the SEC on June 27, 2018. The shares of the Company’s common stock were sold at an initial offering price of $22.00 per share, which generated net proceeds of approximately $501,172 to the Company, after deducting underwriting discounts and estimated offering expenses of approximately $37,717 which included $5,497 paid to KKR Capital Markets LLC (“KCM”), an affiliate of KKR, for underwriting services in connection with the IPO. The Company used the net proceeds from the IPO to repay all $110,000 of the Company’s second lien term loans, all $55,000 outstanding under the Company’s Revolving Credit Facility (as defined below) and approximately $336,100 of the Company’s first lien term loans and accrued and unpaid interest thereon. These repayments resulted in an extinguishment of debt in the amount of approximately $501,100, which will be recognized in the fourth quarter of 2018. The Company incurred $6,808 of transaction related expenses during the nine months ended June 30, 2018, which are included in Selling, general and administrative expense in the accompanying Consolidated Statements of Operations, of which $5,370 was paid from the net proceeds generated by the IPO. BrightView was party to a Monitoring Agreement, dated as of December 18, 2013 (the “Monitoring Agreement”), with KKR and MSD Partners (“MSD” and together with KKR, the “Sponsors”), which was terminated on July 2, 2018 in accordance with its terms upon the completion of the IPO. In connection with such termination, the Company paid termination fees of approximately $7,598 and $3,438 to KKR and MSD, respectively. Affiliates of KKR and MSD retained 55.9% and 13.0% ownership interest, respectively, in the Company after the IPO. The Company’s Third Amended and Restated Certificate of Incorporation (the “Charter”) became effective in connection with the completion of the IPO on July 2, 2018. The Charter, among other things, provides that the Company’s authorized capital stock consists of 500,000 shares of common stock, and 50,000 shares of preferred stock, par value $0.01 per share. The Company’s bylaws were also amended and restated as of July 2, 2018. Stock Split In connection with preparing for the IPO, the Company’s Board of Directors approved a 2.33839-for-one reverse stock split of the Company’s common stock. The reverse stock split became effective June 8, 2018. The par value per share of common stock and authorized shares of common stock remain unchanged at $0.01 per share and 185 million shares, respectively. The accompanying consolidated financial statements and notes thereto give retroactive effect to the reverse stock split for all periods presented. All common share and per share amounts in the consolidated financial statements and notes have been retrospectively adjusted to give effect to the reverse stock split, including reclassifying an amount equal to the reduction in aggregate par value of ‘‘Common stock’’ to ‘‘Additional paid-in-capital’’ on the consolidated balance sheets.

1.Business and Basis of Presentation

BrightView Holdings, Inc. (“BrightView” or the “Company”) 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. As of June 30, 2018, the Company was a wholly-owned subsidiary of BrightView Parent L.P. (“Parent”), an affiliate of KKR & Co. Inc., (formerly KKR & Co. L.P., “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 Acquisition”).

On March 15, 2018, the Company changed its name from BrightView Acquisition Holdings, Inc. to BrightView Holdings, Inc.

On July 2, 2018, the Company completed an initial public offering of its common stock (the “IPO”). See “Initial Public Offering” below.

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, 2017, presented herein, has been derived from the Company’s audited consolidated financial statements as of and for the nine months ended September 30, 2017, but does not include all disclosures required by GAAP. For a more complete discussion of the Company’s accounting policies and certain other information refer to the consolidated financial statements included in the Company’s 2017 audited consolidated financial statements and the notes thereto included in the Company’s final prospectus dated June 27, 2018 (the “Prospectus”), as filed with the Securities and Exchange Commission (the “SEC”) on June 29, 2018 pursuant to Rule 424(b)(4) under the Securities Act of 1933, as amended (the “Securities Act”).

Use of Estimates

The preparation of 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 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.

Initial Public Offering

On July 2, 2018, the Company completed the IPO in which the Company issued and sold 24,495 shares of common stock. The shares sold in the offering were registered under the Securities Act pursuant to the Company’s Registration Statement on Form S-1 (File No. 333-225277) (the “Registration Statement”), which was declared effective by the SEC on June 27, 2018. The shares of the Company’s common stock were sold at an initial offering price of $22.00 per share, which generated net proceeds of approximately $501,172 to the Company, after deducting underwriting discounts and estimated offering expenses of approximately $37,717 which included $5,497 paid to KKR Capital Markets LLC (“KCM”), an affiliate of KKR, for underwriting services in connection with the IPO. The Company used the net proceeds from the IPO to repay all $110,000 of the Company’s second lien term loans, all $55,000 outstanding under the Company’s Revolving Credit Facility (as defined below) and approximately $336,100 of the Company’s first lien term loans and accrued and unpaid interest thereon. These repayments resulted in an extinguishment of debt in the amount of approximately $501,100, which will be recognized in the fourth quarter of 2018. The Company incurred $6,808 of transaction related expenses during the nine months ended June 30, 2018, which are included in Selling, general and administrative expense in the accompanying Consolidated Statements of Operations, of which $5,370 was paid from the net proceeds generated by the IPO.

BrightView was party to a Monitoring Agreement, dated as of December 18, 2013 (the “Monitoring Agreement”), with KKR and MSD Partners (“MSD” and together with KKR, the “Sponsors”), which was terminated on July 2, 2018 in accordance with its terms upon the completion of the IPO. In connection with such termination, the Company paid termination fees of approximately $7,598 and $3,438 to KKR and MSD, respectively. Affiliates of KKR and MSD retained 55.9% and 13.0% ownership interest, respectively, in the Company after the IPO.

The Company’s Third Amended and Restated Certificate of Incorporation (the “Charter”) became effective in connection with the completion of the IPO on July 2, 2018. The Charter, among other things, provides that the Company’s authorized capital stock consists of 500,000 shares of common stock, and 50,000 shares of preferred stock, par value $0.01 per share. The Company’s bylaws were also amended and restated as of July 2, 2018.

Stock Split

In connection with preparing for the IPO, the Company’s Board of Directors approved a 2.33839-for-one reverse stock split of the Company’s common stock. The reverse stock split became effective June 8, 2018. The par value per share of common stock and authorized shares of common stock remain unchanged at $0.01 per share and 185 million shares, respectively. The accompanying consolidated financial statements and notes thereto give retroactive effect to the reverse stock split for all periods presented. All common share and per share amounts in the consolidated financial statements and notes have been retrospectively adjusted to give effect to the reverse stock split, including reclassifying an amount equal to the reduction in aggregate par value of ‘‘Common stock’’ to ‘‘Additional paid-in-capital’’ on the consolidated balance sheets.