Weber (WEBR) 10-Q 16 Sep 21 2021 Q3 Quarterly report Financial data

Cover Page

Cover Page - shares	9 Months Ended
	Jun. 30, 2021	Aug. 31, 2021
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Quarterly Report	true
Document Transition Report	false
Document Period End Date	Jun. 30, 2021
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q3
Current Fiscal Year End Date	--09-30
Entity Registrant Name	Weber Inc.
Entity Central Index Key	0001857951
Trading Symbol	WEBR
Entity Filer Category	Non-accelerated Filer
Entity Interactive Data Current	Yes
Entity Current Reporting Status	No
Entity File Number	001-40702
Entity Address, Address Line One	1415 S. Roselle Road
Entity Address, City or Town	Palatine
Entity Address, State or Province	IL
Entity Incorporation, State or Country Code	DE
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Address, Postal Zip Code	60067
Entity Tax Identification Number	61-1999408
City Area Code	847
Local Phone Number	934-5700
Entity Shell Company	false
Title of 12(b) Security	Common Stock
Security Exchange Name	NYSE
Common Class A [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		52,533,338
Common Class B [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		234,645,219

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($)		Jun. 30, 2021	Apr. 01, 2021	Sep. 30, 2020
Current assets:
Cash and cash equivalents		$ 146,469,000		$ 123,792,000
Accounts receivable, less allowance of $2,491 and $3,262 at June 30, 2021 and September 30, 2020, respectively	[1]	321,717,000		130,885,000
Inventories, net		333,935,000		233,327,000
Prepaid expenses and other current assets	[2]	44,109,000		33,880,000
Total current assets		846,230,000		521,884,000
Property, equipment and leasehold improvements, net		121,842,000		108,252,000
Operating lease right-of-use assets	[3]	69,043,000		48,937,000
Other long-term assets		39,673,000		33,961,000
Trademarks, net		358,668,000		343,965,000
Other intangible assets, net		149,460,000		51,866,000
Goodwill		113,241,000		30,570,000
Total assets		1,698,157,000		1,139,435,000
Current liabilities:
Trade accounts payable		408,031,000		298,078,000
Accrued expenses	[4]	179,643,000		133,868,000
Income taxes payable		8,103,000		8,151,000
Current portion of long-term debt and other borrowings		12,500,000		36,250,000
Current portion of long-term financing obligation		571,000		514,000
Total current liabilities		608,848,000		476,861,000
Long-term debt, less current portion		1,208,248,000		575,659,000
Long-term financing obligation, less current portion		38,545,000		38,986,000
Non-current operating lease liabilities	[5]	57,177,000		37,986,000
Other long-term liabilities		186,928,000		53,491,000
Total liabilities		2,099,746,000		1,182,983,000
Commitments and contingencies
Members' deficit, 531,716 and 551,774 common units authorized, issued and outstanding as of June 30, 2021 and September 30, 2020, respectively		(742,000)		(1,216,000)
Accumulated other comprehensive loss		(46,319,000)		(68,580,000)
Retained (deficit) earnings		(354,528,000)		26,248,000
Total members' (deficit) equity		(401,589,000)		(43,548,000)
Total liabilities and members' (deficit) equity		1,698,157,000		$ 1,139,435,000
WEBER INC [Member]
Assets
Cash		0	$ 0
Current assets:
Total assets		0	0
Current liabilities:
Commitments and contingencies
Stockholders' equity
Common stock, $0.01 par value per share, 1,000 shares authorized		0	0
Total stockholders' equity		$ 0	$ 0
[1]	Includes related party royalty receivables of $75 and $220 at June 30, 2021 and September 30, 2020, respectively (see Note 10).
[2]	Includes related party prepaid royalties of $0 and $10,044 at June 30, 2021 and September 30, 2020, respectively (see Note 10).
[3]	Includes related party operating lease assets of $3,475 and $4,111 at June 30, 2021 and September 30, 2020, respectively (see Note 10).
[4]	Includes related party operating lease liabilities of $1,105 and $0 at June 30, 2021 and September 30, 2020, respectively (see Note 10).
[5]	Includes related party operating lease liabilities of $2,299 and $4,139 at June 30, 2021 and September 30, 2020, respectively (see Note 10).

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2021	Sep. 30, 2020
Class of Stock and Related Party Balances [Line Items]
Accounts receivable, allowance for credit loss	$ 2,491	$ 3,262
Common unit, authorized	531,716	551,774
Common unit, issued	531,716	551,774
Common unit, outstanding	531,716	551,774
Royalty receivables	$ 75	$ 220
Prepaid royalties	0	10,044
Related party operating lease, asset	3,475	4,111
Related party operating lease, liability current	1,105	0
Operating lease, liability noncurrent	$ 2,299	$ 4,139
WEBER INC [Member]
Class of Stock and Related Party Balances [Line Items]
Common stock par or stated value per share	$ 0.01
Common stock shares authorized	1,000

Condensed Consolidated Statemen

Condensed Consolidated Statements of Income - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Income Statement [Abstract]
Net sales	[1]	$ 668,867	$ 560,793	$ 1,632,176	$ 1,157,169
Cost of goods sold	[2]	369,776	329,115	912,558	687,532
Gross profit		299,091	231,678	719,618	469,637
Operating expenses:
Selling, general and administrative	[3],[4]	257,758	130,333	555,744	305,051
Amortization of intangible assets		5,226	3,190	12,090	10,045
Gain on disposal of assets held for sale				(5,185)
Income from operations		36,107	98,155	156,969	154,541
Foreign currency (gain) loss		(3,758)	(1,210)	(3,772)	4,823
Interest income	[5]	(252)	(311)	(677)	(1,012)
Interest expense		18,283	10,895	50,457	32,006
Loss from early extinguishment of debt				5,448
Income before taxes		21,834	88,781	105,513	118,724
Income tax expense		4,009	8,548	19,398	12,106
Loss (gain) from investments in unconsolidated affiliates		0	778	(5,505)	3,556
Net income		17,825	79,455	91,620	103,062
Earnings allocated to participating securities		(129)	(721)	(730)	(1,006)
Net income attributable to common members		$ 17,696	$ 78,734	$ 90,890	$ 102,056
Net income per common unit
Basic		$ 32.84	$ 142.69	$ 166	$ 184.97
Diluted		$ 32.84	$ 142.69	$ 166	$ 184.97
Weighted average common units outstanding
Basic		538,777	551,774	547,515	551,760
Diluted		538,777	551,774	547,515	551,760
[1]	Includes related party royalty revenue of $128 and $34 for the three months ended June 30, 2021 and 2020, respectively, and $75 and $316 for the nine months ended June 30, 2021 and 2020, respectively (see Note 10).
[2]	Includes related party rental expense of $213 and $179 for the three months ended June 30, 2021 and 2020, respectively, and $605 and $538 for the nine months ended June 30, 2021 and 2020, respectively (see Note 10).
[3]	Includes related party rental expense of $68 and $59 for the three months ended June 30, 2021 and 2020, respectively, and $196 and $176 for the nine months ended June 30, 2021 and 2020, respectively (see Note 10).
[4]	Includes related party royalty expense of $0 and $471 for the three months ended June 30, 2021 and 2020, respectively, and $268 and $1,574 for the nine months ended June 30, 2021 and 2020, respectively (see Note 10).
[5]	Includes related party interest income of $11 and $14 for the for the three months ended June 30, 2021 and 2020, respectively, and $40 and $42 for the nine months ended June 30, 2021 and 2020, respectively (see Note 10).

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Income (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Interest Income, Related Party	$ 11	$ 14	$ 40	$ 42
Rental Expense | Cost of Sales
Related Party Transaction, Amounts of Transaction	213	179	605	538
Rental Expense | Selling, General and Administrative Expenses
Related Party Transaction, Amounts of Transaction	68	59	196	176
Royalty Expense
Related Party Transaction, Amounts of Transaction	0	471	268	1,574
Royalty [Member]
Revenues	$ 128	$ 34	$ 75	$ 316

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 17,825	$ 79,455	$ 91,620	$ 103,062
Other comprehensive income (loss):
Foreign currency translation adjustments	577	9,576	2,941	9,196
(Loss) gain on derivative instruments	(4,273)	(1,996)	19,320	(18,012)
Comprehensive income	$ 14,129	$ 87,035	$ 113,881	$ 94,246

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Changes in Members' Equity (Deficit) - USD ($) $ in Thousands	Total	Units [Member]	Capital Contribution [Member]	Notes Receivable From Members [Member]	Accumulated Other Comprehensive Income (Loss) Cumulative Translation Adjustments [Member]	Accumulated Other Comprehensive Income (Loss) Unrealized Gain (Loss) on Derivative Instruments [Member]	Retained Earnings (Deficit) [Member]
Beginning Balance at Sep. 30, 2019	$ (121,760)			$ (1,427)	$ (48,411)	$ (23,850)	$ (48,072)
Beginning Balance (Shares) at Sep. 30, 2019		551,732
Capital contributions	125		$ 125
Capital contributions (Shares)		42
Interest income on notes receivable	(42)			(42)
Net income	103,062						103,062
Foreign currency translation adjustments	9,196				9,196
Gain (loss) on derivative instruments	(20,394)					(20,394)
Unit based compensation	142		142
Reclassification of realized loss on derivative instruments to net income	2,382					2,382
Application of ASC 842	2,482						2,482
Members' distributions	(10,240)						(10,240)
Ending Balance at Jun. 30, 2020	(35,047)		267	(1,469)	(39,215)	(41,862)	47,232
Ending Balance (Shares) at Jun. 30, 2020		551,774
Beginning Balance at Mar. 31, 2020	(113,876)		142	(1,455)	(48,791)	(39,866)	(23,906)
Beginning Balance (Shares) at Mar. 31, 2020		551,774
Interest income on notes receivable	(14)			(14)
Net income	79,455						79,455
Foreign currency translation adjustments	9,576				9,576
Gain (loss) on derivative instruments	(3,630)					(3,630)
Reclassification of realized loss on derivative instruments to net income	1,634					1,634
Members' distributions	(8,192)		125				(8,317)
Ending Balance at Jun. 30, 2020	(35,047)		267	(1,469)	(39,215)	(41,862)	47,232
Ending Balance (Shares) at Jun. 30, 2020		551,774
Beginning Balance at Sep. 30, 2020	(43,548)		267	(1,483)	(28,455)	(40,125)	26,248
Beginning Balance (Shares) at Sep. 30, 2020		551,774
Capital contributions	12,094		12,294	(200)
Capital contributions (Shares)		3,066
Issuance of common units in connection with acquisition	14,582		14,582
Issuance of common units in connection with acquisition (Shares)		2,899
Repurchase of members' interest	(188,860)		(21,049)				(167,811)
Repurchase of members' interest (Shares)		(26,023)
Interest income on notes receivable	(40)			(40)
Notes receivables repayment	981			981
Net income	91,620						91,620
Foreign currency translation adjustments	2,941				2,941
Gain (loss) on derivative instruments	11,289					11,289
Unit based compensation	4,941		4,941
Reclassification of realized loss on derivative instruments to net income	8,031					8,031
Members' distributions	(315,620)		(11,035)				(304,585)
Ending Balance at Jun. 30, 2021	(401,589)			(742)	(25,514)	(20,805)	(354,528)
Ending Balance (Shares) at Jun. 30, 2021		531,716
Beginning Balance at Mar. 31, 2021	26,714		922	(1,460)	(26,091)	(16,532)	69,875
Beginning Balance (Shares) at Mar. 31, 2021		551,842
Capital contributions	11,969		12,069	(100)
Capital contributions (Shares)		2,998
Issuance of common units in connection with acquisition	14,582		14,582
Issuance of common units in connection with acquisition (Shares)		2,899
Repurchase of members' interest	(188,860)		(21,049)				(167,811)
Repurchase of members' interest (Shares)		(26,023)
Interest income on notes receivable	(11)			(11)
Notes receivables repayment	829			829
Net income	17,825						17,825
Foreign currency translation adjustments	577				577
Gain (loss) on derivative instruments	(7,059)					(7,059)
Unit based compensation	4,511		4,511
Reclassification of realized loss on derivative instruments to net income	2,786					2,786
Members' distributions	(285,452)		$ (11,035)				(274,417)
Ending Balance at Jun. 30, 2021	$ (401,589)			$ (742)	$ (25,514)	$ (20,805)	$ (354,528)
Ending Balance (Shares) at Jun. 30, 2021		531,716

Condensed Consolidated Statem_5

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Operating activities
Net income	$ 91,620	$ 103,062
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for depreciation	20,317	21,881
Provision for amortization of intangible assets	12,090	10,045
Provision for amortization of deferred financing costs	2,813	2,079
Management incentive plan compensation, net of forfeitures	5,422	1,725
(Gain) loss from investments in unconsolidated affiliates	(5,505)	3,556
Gain on disposal of assets held for sale	(5,185)
Unit based compensation	88,771	142
Loss from early extinguishment of debt	5,448
Changes in operating assets and liabilities
Accounts receivable	(186,381)	(202,175)
Inventories	(96,505)	(27,341)
Prepaid expenses and other current assets	12,844	(2,192)
Trade accounts payable	106,057	152,197
Accrued expenses	29,165	57,735
Income taxes payable	6,507	5,120
Other	(13,018)	(4,536)
Net cash provided by operating activities	74,460	121,298
Investing activities
Proceeds from disposal of property, equipment and leasehold improvements	14,028	6,565
Additions to property, equipment and leasehold improvements	(40,503)	(22,709)
Payments for acquisitions	(128,514)
Net cash used in investing activities	(154,989)	(16,144)
Financing activities
Proceeds from issuance of long-term debt	1,250,000
Payments for deferred financing costs	(26,654)	(3,233)
Payments for deferred offering costs	(2,349)
Payments under agreement with iDevices	(228)	(1,521)
Interest rate swap settlement payments	(3,903)
Proceeds from contribution of capital, net	13,075	125
Repurchase of members' interests	(188,860)
Members' distributions	(315,622)	(10,240)
Borrowings from revolving credit facility	217,000	430,167
Payments on revolving credit facility	(217,000)	(419,545)
Payments of long-term debt	(622,500)	(36,250)
Payment for the acquired Q Grill Trademark		(18,000)
Service on financing obligation	(382)
Net cash provided by (used in) financing activities	102,577	(58,497)
Effect of exchange rate changes on cash and cash equivalents	629	7,808
Increase in cash and cash equivalents	22,677	54,465
Cash and cash equivalents at beginning of period	123,792	44,665
Cash and cash equivalents at end of period	146,469	99,130
Supplemental disclosures of cash flow information:
Cash paid for interest	42,977	35,172
Cash paid for income taxes, net of refunds of $3,213 and $656, respectively	17,090	7,251
Supplemental disclosures of non-cash investing and financing information:
Property and equipment included in accounts payable and accrued expenses	7,253	$ 2,997
Deferred offering costs included in accounts payable and accrued expenses	1,689
Settlement of existing relationship through business combination	9,776
Issuance of common units for business acquisition	$ 14,582

Condensed Consolidated Statem_6

Condensed Consolidated Statements of Cash Flows (Parenthetical) - USD ($) $ in Thousands	9 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Statement of Cash Flows [Abstract]
Proceeds from income tax refunds	$ 3,213	$ 656

Organization

Organization	9 Months Ended
	Jun. 30, 2021
WEBER INC [Member]
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Organization	1. Organization Weber Inc. (the “Company”) was formed as a Delaware corporation on April 1, 2021. The Company was formed for the purpose of completing a public offering and related transactions in order to carry on the business of Weber HoldCo LLC and its subsidiaries (“Topco LLC”). As the manager of Topco LLC, the Company is expected to operate and control all of the business and affairs of Topco LLC, and through Topco LLC, continue to conduct the business now conducted by these subsidiaries.

Basis of Presentation and Signi

Basis of Presentation and Significant Accounting Policies	9 Months Ended
	Jun. 30, 2021
Accounting Policies [Line Items]
Basis of Presentation and Significant Accounting Policies	1. Basis of Presentation and Significant Accounting Policies The accompanying condensed consolidated financial statements of Weber-Stephen Products LLC (“Weber” or the “Company”) were prepared in accordance with generally accepted accounting principles (“GAAP”) in the United States (“U.S.”). In the opinion of management, the interim financial data includes all adjustments, consisting only of normal recurring adjustments, necessary to present a fair statement of the results for the interim periods. Organization The Company is primarily a manufactur e Principles of Consolidation The condensed consolidated financial statements include the accounts and operations of the Company and its wholly owned subsidiaries. All significant intercompany accounts and transactions have been eliminated in consolidation. Fiscal Year The Company’s fiscal year runs from October 1 through September 30. All references to years are to fiscal years unless otherwise stated. Use of Estimates The preparation of condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the condensed consolidated financial statements and accompanying notes. Actual results could differ from those estimates. The effect of the change in the estimates will be recognized in the current period of the change. Seasonality Although the Company generally has demand for its products throughout the year, the Company’s sales have historically experienced some seasonality. The Company has typically experienced its highest level of sales of its products in the second and third fiscal quarters as retailers across North America and Europe changeover their floor sets, build inventory and fulfill consumer demand for outdoor cooking products. Sales are typically lower during the first and fourth fiscal quarters, with the exception of the Australia/New Zealand business which is counter seasonal to the balance of the business. Revenue Recognition Revenue transactions associated with the sale of grills and related accessories comprise a single performance obligation, which consists of the transfer of products to customers at a point in time. Substantially all of the Company’s revenues relate to the sales of grills and accessories. The Company satisfies the performance obligation and records revenues for grills and accessories when control has passed to the customer, based on the terms of sale. Transfer of control passes to customers at a point in time, that point in time generally being upon shipment or upon delivery of the performance obligation, depending on the written sales terms with the customer. The Company’s purchase orders from customers for specific products represent its contracts and include all key terms and conditions related to the sale of products. For all sales, no significant uncertainty exists surrounding the customers’ obligation to pay for grills and accessories. Customers’ obligations to pay are generally under normal commercial terms, with payment terms typically being 30-60 The Company offers warranties on most of its products, which are considered assurance type warranties and, therefore, are not accounted for as a separate performance obligation. The Company has elected to account for shipping and handling activities as a fulfillment cost. Accordingly, all shipping and handling activity costs are recognized as Selling, general and administrative expenses at the time the related revenue is recognized. The Company recognized shipping and handling activity costs of $52,883 and $38,352 for the three months ended June 30, 2021 and 2020, respectively, and $126,783 and $84,724 for the nine months ended June 30, 2021 and 2020, respectively. Amounts invoiced to customers for shipping and handling are recorded in Net sales. Any taxes collected on behalf of government authorities are excluded from Net sales. Accounts Receivable Accounts receivable consist primarily of amounts due to the Company from its normal business activities, offset by an allowance for expected credit losses. The Company estimates its expected credit losses based on historical experience, the aging of accounts receivable, consideration of current economic conditions and its expectations of future economic conditions. Additionally, the Company establishes customer-specific allowances for known at-risk The Company’s allowances are as follows: Balance at September 30, 2020 $ 3,262 Charges (credits) to the provision, net 325 Accounts written off, net of recoveries (1,096 ) Balance at June 30, 2021 $ 2,491 Balance at September 30, 2019 $ 2,858 Charges (credits) to the provision, net 863 Accounts written off, net of recoveries (160 ) Balance at June 30, 2020 $ 3,561 Inventories Inventories include finished products and work-in-process first-in, first-out The components of inventory are as follows: June 30, September 30, Work-in-process $ 48,041 $ 33,343 Finished products 285,894 199,984 Total Inventories, net $ 333,935 $ 233,327 Derivative Instruments During the nine months ended June 30, 2021 and 2020, the Company used interest rate swap contracts to reduce its exposure to fluctuations in interest rates. During the nine months ended June 30, 2021 and 2020, the Company also entered into foreign currency forward contracts to reduce its exposure to fluctuations in foreign currency denominated sales and the respective cash flows impacting Gross profit. When entered, these financial instruments are designated as cash flow hedges of underlying exposures and de-designated de-designated During the nine months ended June 30, 2021, the Company used commodity index contracts to reduce its exposure to fluctuations in cash flows relating to the purchases of aluminum and steel-based components and raw materials impacting Gross profit. Cash flows related to the settlement of derivative instruments designated as cash flow hedges are classified within operating activities. Changes in the fair value of a derivative that is designated as a cash flow hedge, to the extent that the hedge is effective, are recorded in accumulated other comprehensive income (loss) and reclassified to earnings when the hedged item affects earnings. Using derivative instruments means assuming counterparty credit risk. Counterparty credit risk relates to the loss the Company could incur if a counterparty were to default on a derivative contract. The Company deals with only investment-grade counterparties and monitors the overall credit risk and exposure to individual counterparties. The Company did not experience any nonperformance by a counterparty during the nine months ended June 30, 2021 or 2020. The Company did not require, nor did it post, collateral or security on such contracts. Business Combinations The Company uses its best estimates and assumptions to assign fair value to the tangible and intangible assets acquired and liabilities assumed at the acquisition date. The Company’s estimates are inherently uncertain and subject to refinement. During the measurement period, which may be up to one year from the acquisition date, the Company may record adjustments to the fair value of these tangible and intangible assets acquired and liabilities assumed, with the corresponding offset to goodwill. The Company continues to collect information and reevaluates these estimates and assumptions quarterly and records any adjustments to the Company’s preliminary estimates to goodwill provided that the Company is within the measurement period. Upon the conclusion of the measurement period or final determination of the fair value of assets acquired or liabilities assumed, whichever comes first, any subsequent adjustments are recorded to the Company’s condensed consolidated statements of income. In the event that the Company acquir e Income (Loss) Per Unit Basic income (loss) per unit is computed using the weighted-average number of outstanding common units during the period. Diluted income (loss) per unit is computed using the weighted- average number of outstanding common units and, when dilutive, potential common units outstanding during the period. For purposes of the diluted net income (loss) per unit calculation, common units issued in exchange for notes receivable with limited recourse provisions are considered to be potentially dilutive securities. See Note 15 for further information. Basic and diluted net income (loss) per unit attributable to common members is presented in conformity with the two-class two-class two-class Unit Based Compensation As described within the Change in Accounting Principle section below, in anticipation of becoming a public company, the Company changed its methodology for valuing the profits interest units and Management Incentive Compensation Plan (“LTIP”) awards from the intrinsic value methodology to fair value during the quarter ended March 31, 2021. Both the LTIP awards and the profits interest units are liability classified. The awards are re-measured The value of the LTIP awards is based on achievement of performance metrics established by the Compensation Committee of the Board of Directors. The value of the awards at the end of each reporting period is dependent upon the Company’s estimates of the underlying performance measures. As the units issued are based on performance metrics, the expense is adjusted for the ultimate number of units expected to be issued as of the end of each reporting period. The fair value of the profits interest units is estimated using the Black-Scholes option-pricing valuation model. The determination of fair value using an option-pricing model is affected by the Company’s enterprise value as well as assumptions pertaining to several variables, including expected volatility, the expected term of the unit and the risk-free rate of interest. In the option-pricing model for the Company’s profits interest units, expected volatility is based on an analysis of reported data for a group of guideline publicly-traded companies. For this analysis, the Company selects companies with comparable characteristics including enterprise value, risk profiles, and with historical share price information sufficient to meet the expected life of the units. The Company determines expected volatility using an average of the historical volatilities of the guideline group of companies. The Company expects to continue to apply this process until such time as it has adequate historical data regarding volatility. The expected term of the unit is based on expected exercise patterns of unit holders and the risk-free rate of interest is based on U.S. Treasury yields. Advertising Costs The Company expenses advertising costs upon the first display of the advertisement and includes advertising expenses in Selling, general and administrative expenses in the condensed consolidated statements of income. The Company incurred advertising expenses of $49,421 and $26,596 for the three months ended June 30, 2021 and 2020, respectively, and $84,921 and $46,991 for the nine months ended June 30, 2021 and 2020, respectively. Research and Development Costs Research and development costs are charged to expense as incurred and included in Selling, general and administrative expenses in the condensed consolidated statements of income. The Company incurred research and development expenses of $18,421 and $4,659 for the three months ended June 30, 2021 and 2020, respectively, and $28,619 and $11,967 for the nine months ended June 30, 2021 and 2020, respectively. Change in Accounting Principle Profits interest units and LTIP awards historically were accounted for as liability compensatory awards under ASC 710, Compensation—General Compensation—Stock Compensation re-measured expense of New Accounting Pronouncements Recently Adopted In March 2020, the FASB issued ASU 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting In December 2019, the FASB issued ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes 2019-12 2019-12 In August 2018, the FASB issued ASU 2018-15, Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement that is a Service Contract 2018-15 e In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework—Changes to the Disclosure Requirements for Fair Value Measurement 2018-13 . In June 2016, the FASB issued ASU 2016-13, Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments off-balance New Accounting Pronouncements Issued but Not Yet Adopted No recent accounting pronouncements were issued by the FASB that are believed by management to have a material impact on the Company’s future financial statements. Property, Equipment and Leasehold Improvements During the fiscal year ended September 30, 2020, the Company determined that one of its manufacturing sites was considered to be assets held for sale, since the asset group was being marketed for sale and all the criteria to be classified as held for sale under Accounting Standards Codification (“ASC”) 360, Property, Plant and Equipment—Impairment or Disposal of Long-Lived Assets Warranty The Company offers warranties on most of its products. The specific terms and conditions of the warranties offered by the Company vary depending upon the product sold. The Company estimates the costs that may be incurred under its warranty plans and the period for which claims are honored, and records a liability in the amount of such costs at the time product revenue is recognized. Factors that affect the Company’s warranty liability include the number of units sold, the type of products sold, historical and anticipated rates of warranty claims and cost per claim. The Company periodically assesses the adequacy of its recorded warranty liabilities and adjusts the amounts as necessary. Deferred Financing Costs Deferred financing costs are amortized over the term of the related debt. The carrying value of the deferred financing costs was $25,813 and $7,422 as of June 30, 2021 and September 30, 2020, respectively. Deferred financing costs related to long-term debt are reflected as a direct reduction of the carrying value of the related debt. Amortization expense of deferred financing costs was $955 and $856 for the three months ended June 30, 2021 and 2020, respectively, and $2,813 and $2,079 for the nine months ended June 30, 2021 and 2020, respectively, and was recorded in Interest expense. Deferred Offering Costs The Company capitalizes certain legal, accounting and other third-party fees that are directly associated with in-process in-process Income Taxes In the U.S., the Company, a limited liability company (LLC), is taxed as a partnership under the Internal Revenue Code. The Company’s income is included in the members’ income tax returns. Accordingly, the Company generally is not subject to federal or certain state income taxes. The Company has operations that are subject to income and other similar taxes in foreign countries. A valuation allowance is provided to offset deferred tax assets if, based on available evidence, it is more likely than not that some or all of the deferred tax assets will not be realized. In accordance with ASC 740, Income Taxes The Company’s practice is to recognize interest and penalties related to income tax matters in Income taxes in the accompanying condensed consolidated statements of income. For the three and nine months ended June 30, 2021 and 2020, there were no significant interest or penalties related to uncertain income tax positions that were recognized in the accompanying condensed consolidated statements of income.
WEBER INC [Member]
Accounting Policies [Line Items]
Basis of Presentation and Significant Accounting Policies	2. Basis of Presentation and Significant Accounting Policies The financial statement has been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”). Separate statements of income, comprehensive income, changes in stockholder’s equity, and cash flows have not been presented because there have been no activities in this entity as of June 30, 2021. Use of Estimates The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual results could differ from those estimates. The effect of the change in the estimates will be recognized in the current period of the change.

Common Stock

Common Stock	9 Months Ended
	Jun. 30, 2021
WEBER INC [Member]
Class of Stock [Line Items]
Common Stock	3. Common Stock On April 1, 2021, the Company was authorized to issue 1,000 shares of common stock, par value $0.01 per share.

Goodwill and Other Intangibles

Goodwill and Other Intangibles	9 Months Ended
	Jun. 30, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangibles	2. Goodwill and Other Intangibles The Company’s goodwill consists of the following: Americas EMEA APAC Total Balance as of September 30, 2020 $ 19,219 $ 10,722 $ 629 $ 30,570 Acquisitions 55,406 — 27,530 82,936 Foreign exchange — 124 (389 ) (265 ) Balance as of June 30, 2021 $ 74,625 $ 10,846 $ 27,770 $ 113,241 Balance as of September 30, 2019 $ 19,219 $ 9,971 $ 593 $ 29,783 Foreign exchange — 306 14 320 Balance as of June 30, 2020 $ 19,219 $ 10,277 $ 607 $ 30,103 The Company’s intangible assets consist of the following June 30, 2021 (unaudited) Gross Accumulated Net Trademark—Weber $ 310,000 $ — $ 310,000 Trademarks—Other 55,900 (7,232 ) 48,668 Trademarks, net 365,900 (7,232 ) 358,668 Customer lists 91,993 (49,283 ) 42,710 Patents 49,428 (47,325 ) 2,103 In-process 4,500 (1,988 ) 2,512 Developed technology 87,000 (2,689 ) 84,311 Reacquired rights 14,083 (1,078 ) 13,005 Non-compete 6,300 (1,481 ) 4,819 Other intangible assets, net 253,304 (103,844 ) 149,460 Total $ 619,204 $ (111,076 ) $ 508,128 September 30,2020 Gross Carrying Accumulated Net Book Trademark—Weber $ 310,000 $ — $ 310,000 Trademarks—Other 38,900 (4,935 ) 33,965 Trademarks, net 348,900 (4,935 ) 343,965 Customer lists 91,388 (45,684 ) 45,704 Patents 49,428 (46,156 ) 3,272 Internally developed software 5,700 (5,700 ) — In-process 4,500 (1,650 ) 2,850 Non-compete 600 (560 ) 40 Other intangible assets, net 151,616 (99,750 ) 51,866 Total $ 500,516 $ (104,685 ) $ 395,831 The Company’s indefinite-lived intangible assets consist of Trademark—Weber. As of June 30, 2021, the remaining weighted-average amortization periods of the intangible assets subject to amortization are as follows: Weighted- Trademarks—Other 14.9 Customer lists 9.5 Patents 7.7 In-process 5.6 Developed technology 14.6 Reacquired rights 3.1 Non-compete 2.6 The Company expects to record the following amortization expense on intangible assets for each of the next five years and thereafter: Remaining period of 2021 $ 5,182 2022 20,815 2023 20,810 2024 18,745 2025 14,680 Thereafter 117,895 Total $ 198,127 Total amortization expense for the Company’s intangible assets was $5,226 and $3,190 for the three months ended June 30, 2021 and 2020, respectively, and $12,090 and $10,045 for the nine months ended June 30, 2021 and 2020, respectively.

Property, Equipment and Leaseho

Property, Equipment and Leasehold Improvements	9 Months Ended
	Jun. 30, 2021
Property, Plant and Equipment [Abstract]
Property, Equipment and Leasehold Improvements	3. Property, Equipment and Leasehold Improvements Property, equipment and leasehold improvements, net consists of the following: June 30, September 30, Land $ 6,453 $ 12,530 Buildings 44,473 52,985 Computer equipment and software 72,588 66,166 Equipment 197,515 209,033 Leasehold improvements 12,617 17,264 Construction-in-progress 35,792 8,075 369,438 366,053 Accumulated depreciation (247,596 ) (257,801 ) Total $ 121,842 $ 108,252 Depreciation expense amounted to $6,853 and $7,264 for the three months ended June 30, 2021 and 2020, respectively, and $20,317 and $21,881 for the nine months ended June 30, 2021 and 2020 respectively.

Acquisitions

Acquisitions	9 Months Ended
	Jun. 30, 2021
Business Acquisition [Abstract]
Acquisitions	4. Acquisitions June Acquisition On January 12, 2021, the Company acquired all of the remaining outstanding stock of June Life, Inc. (“June”), a smart appliance and technology company. The purpose of the acquisition was primarily to advance consumer experiences through the use of embedded technology in its products and higher quality digital products. The preliminary composition of the purchase price recorded for June was as follows: Cash $ 108,285 Fair value of equity interest 24,144 Settlement of existing contractual relationship 9,776 Total $ 142,205 Prior to the acquisition, the Company held an existing equity interest in June, which was historically accounted for as an equity method investment. Upon completion of the merger agreement, June became a wholly-owned subsidiary of the Company. At the time of acquisition, the fair value of the existing equity interest totaled $24,144. See Note 5 for further details. The June license and development agreement, discussed within Note 5, was deemed to be an existing contractual relationship. As a result of the business combination, the Company recorded this arrangement as consideration at its January 12, 2021 fair value, which resulted in an increase in goodwill of $9,776. The results of operations for June have been included in the condensed consolidated statements of income since the acquisition date, which were not material. June operations are reflected within the Americas reportable segment. Actual and pro forma revenue and results of operations for the acquisition have not been presented because they do not have a material impact to the Company’s net sales and results of operations, either individually or in aggregate. The June 30, 2021 condensed consolidated balance sheet includes the assets and liabilities of June, which have been measured at fair value as of the acquisition date. The Company believes that the information provides a reasonable basis for estimating the fair values of the acquired assets and assumed liabilities, but the potential for measurement period adjustments exists based on the Company’s continuing review of matters related to the acquisition. The primary areas that remain preliminary relate to the fair values of intangible assets acquired and their estimated useful lives, valuation of deferred taxes and residual goodwill. The Company expects to finalize the valuation as soon as practicable, but not later than one year from the acquisition date. The preliminary allocation of purchase price recorded for June was as follows: Cash $ 6,046 Inventory 480 Accounts receivable 85 Prepaid expenses and other current assets 617 Property and equipment 104 Intangibles 109,700 Goodwill 55,406 Accounts payable (870 ) Accrued expenses (3,954 ) Other long-term liabilities (25,409 ) Total $ 142,205 The above fair values of assets acquired and liabilities are preliminary and are based on the information that was available as of the reporting date. The goodwill of $ represents the future economic benefits expected to arise from other intangible assets acquired that do not qualify for separate recognition, including an experienced workforce and expected future synergies. None of the goodwill is expected to be deductible for tax purposes. The Company recognized $ of deferred tax liabilities due to the acquisition of June. The deferred tax liabilities have been recorded in Other long-term liabilities in the accompanying condensed consolidated balance sheets. The amounts, based on preliminary valuations and subject to final adjustment, allocated to intangible assets are as follows: Gross Trade names and trademarks $ 17,000 Developed software / patented technology 87,000 Non-competition 5,700 Total $ 109,700 Useful Trade names and trademarks 20.0 Developed software / patented technology 15.0 Non-competition 3.0 Total weighted average useful life 15.2 Developed software/patented technology were valued using the multi-period excess earnings method (“MPEEM”). Intangible assets consisting of trade names and trademarks and non-competition/ . As a result of the acquisition, the Company recognized $1,187 of acquisition-related costs which are included in Selling, general and administrative expenses on the Company’s condensed consolidated statements of income. RMC Acquisition On April 1, 2021, the Company acquired all aspects of the operations of R McDonald Co. Pty. Ltd. (“RMC”), that supported the Company’s business units in Australia and New Zealand. This included certain fixed assets, members of the RMC workforce and their related employment liabilities and the reacquired right to sell and market the Company’s products. RMC, a marketing and distribution company, had historically provided operational and marketing support to operate the Weber Australia and Weber New Zealand businesses on behalf of the Company. The primary purpose of the acquisition was to re-acquire The preliminary composition of the purchase price recorded for RMC was as follows: Cash $ 26,275 Equity consideration issued by the Company (2,899 common units) 14,582 Total $ 40,857 Prior to the acquisition, the Company had a preexisting contractual agreement with RMC which provided RMC the exclusive rights to sell, market, and distribute barbecue grills and accessories in Australia and New Zealand. With the acquisition, the effective settlement of this agreement resulted in the Company reacquiring rights to sell, market, and distribute products in Australia and New Zealand. In addition, RMC had a contractual agreement to provide administrative support services to the Company’s Australian and New Zealand businesses, as well as a licensing agreement for RMC to use certain trademarks of the Company. The transaction resulted in no gain or loss as the contractual terms of these agreements were at market. The results of operations for RMC have been included in the condensed consolidated statements of income since the acquisition date, which were not material. RMC operations are reflected within the Asia-Pacific (“APAC”) reportable segment. Actual and pro forma revenue and results of operations for the acquisition have not been presented because they do not have a material impact to the Company’s net sales and results of operations, either individually or in aggregate. The June 30, 2021 condensed consolidated balance sheet includes the assets and liabilities of RMC, which have been measured at fair value as of the acquisition date. The Company believes that the information provides a reasonable basis for estimating the fair values of the acquired assets and assumed liabilities, but the potential for measurement period adjustments exists based on the Company’s continuing review of matters related to the acquisition. The primary areas that remain preliminary relate to the fair value of the intangible asset acquired, valuation of deferred taxes and residual goodwill. The Company expects to finalize the valuation as soon as practicable, but not later than one year from the acquisition date. The preliminary allocation of purchase price recorded for RMC was as follows: Property and equipment $ 432 Reacquired rights 14,300 Goodwill 27,530 Accrued expenses (1,405 ) Total $ 40,857 The above fair values of assets acquired and liabilities are preliminary and are based on the information that was available as of the reporting date. The goodwill of $27,530 represents the future economic benefits expected to arise from other intangible assets acquired that do not qualify for separate recognition, including an experienced workforce and expected future synergies. None of the goodwill is expected to be deductible for tax purposes. The reacquired rights were valued using MPEEM. The useful life of the reacquired rights were estimated to be 3.3 years. The determination of fair values required estimates about discount rates, future expected cash flows and other future events that are judgmental and subject to change. As a result of the acquisition, the Company recognized approximately $325 of acquisition-related costs which are included in Selling, general and administrative expenses on the Company’s condensed consolidated statements of income.

Investments

Investments	9 Months Ended
	Jun. 30, 2021
Equity Method Investments and Joint Ventures [Abstract]
Investments	5. Investments During the fiscal year ended September 30, 2019, the Company executed an agreement with June to purchase $23,000 of June’s preferred stock and $1,269 of June’s common stock. The common stock investment represents 6% of the total outstanding common stock of June, and the total combined equity investment represents less than 20% of the voting interest in June. The Company also entered into a license and development agreement with June to license certain software and other technology owned by June and adapt this technology to certain products of the Company. The license and development agreement includes provisions for the Company to pay June royalties at varying rates based on the quantities and type of product sold containing the licensed technology. As of June 30, 2021 and September 30, 2020, the Company had recorded prepaid royalties of $0 and $10,044, respectively. Upon the sale of products using the specified technology within the arrangement, the Company amortizes its prepaid royalty expenses into its operating results. Royalty expense of $0 and $471 was recognized under this agreement for the three months ended June 30, 2021 and 2020, respectively, and $268 and $1,574 Prior to the acquisition of June, the Company determined it had significant influence over June due to the substantial impact of the license and development agreement on June’s operating results and cash flows. As a result, the Company has accounted for the common stock investment in June as an equity method investment and recorded its share of June’s earnings or losses. The Company computed the difference between the fair value of June’s net assets and the carrying value of those net assets in June’s financial statements (“basis differences”). The basis differences primarily related to the fair value of intangible assets. The basis differences were amortized over the remaining life of the assets or liabilities to which they relate and recognized as an adjustment to the equity in earnings of June in the Company’s condensed consolidated statements of income. During the three months ended June 30, 2021 and 2020, the Company recorded an equity method loss of $0 and $778, respectively, and an equity method gain of $5,505 and an equity method loss of $3,556 for the nine months ended June 30, 2021 and 2020, respectively, with an offsetting reduction in its investment in June. During the nine months ended June 30, 2021 and 2020, June equity method losses were allocated to the preferred stock investment as the cost basis in the common stock investment had been reduced to zero during the nine months ended June 30, 2020. The carrying value of the preferred stock investment in June was $18,639 as of September 30, 2020 and was recorded in Other long-term assets. As described in Note 4, on January 12, 2021, the Company acquired the remaining equity interest in June and fully consolidated the entity. At acquisition, the Company remeasured the fair value of its existing equity interest, which exceeded the carrying amount of the investment and resulted in a pre-tax

Debt

Debt	9 Months Ended
	Jun. 30, 2021
Debt Disclosure [Abstract]
Debt	6. Debt Long-term debt consists of the following: June 30, September 30, Secured Credit Facility Term Loan, due October 2027 $ 1,243,750 $ — Senior Facility term loan, due December 2022 — 616,250 Total borrowings 1,243,750 616,250 Deferred financing costs (17,287 ) (4,341 ) Original issue discount (5,715 ) — Total debt 1,220,748 611,909 Less: current portion of long-term debt and other borrowings (12,500 ) (36,250 ) Total long-term debt $ 1,208,248 $ 575,659 Aggregate maturities of long-term debt as of June 30, 2021, are as follows: Remaining period of 2021 $ 3,125 2022 12,500 2023 12,500 2024 12,500 2025 12,500 Thereafter 1,190,625 $ 1,243,750 Secured Credit Facility On October 30, 2020, the Company retired its existing senior credit facility (“Senior Facility”) and entered into a new credit facility (the “Secured Credit Facility”) with a syndicate of financial institutions and investors. The Secured Credit Facility includes an initial term loan (“Term Loan”) of $1,250,000 and a revolving credit facility (“Revolving Loan”) with a maximum commitment of $300,000. The proceeds from the Term Loan were used, in part, to pay off the outstanding balance of $616,250 on the Senior Facility. Under the Secured Credit Facility, the Company’s U.S.-based assets, excluding real estate, are pledged as collateral, including its interests in certain foreign subsidiaries. In connection with the Secured Credit Facility, the Company paid financing costs totaling $26,654, of which $25,154 related to the Term Loan and $1,500 related to the Revolving Loan, during the nine months ended June 30, 2021. The Term Loan costs included an original issue discount of $6,250. The financing costs and original issue discount were recorded as deferred financing costs in the condensed consolidated balance sheets and are amortized over the remaining lives of the respective borrowing. Under extinguishment accounting, the Company recorded a $5,448 Loss from early extinguishment of debt in the condensed consolidated statements of income, representing a write-off The Term Loan matures on October 30, 2027. Principal payments on the Term Loan commenced on March 31, 2021, and are payable quarterly at scheduled amounts, with the balance due at maturity. At the Company’s option, the Term Loan interest rate is based on either (i) London Interbank Offered Rate (“LIBOR”) for the relevant interest period, adjusted for statutory reserve requirements (subject to a floor of 0.75%), plus an applicable margin or (ii) a base rate equal to the highest of (a) the rate of interest publicly announced from time to time by the administrative agent as its “prime rate”, (b) the federal funds effective rate plus 0.50% and (c) adjusted LIBOR for an interest period of one month plus 1.00% (subject to a floor of 0.00% per annum), in each case, plus an applicable margin. As of June 30, 2021, the interest rate on the Term Loan was LIBOR plus 3.25%. Interest is payable on the last business day of the month for the relevant interest period selected. The Revolving Loan matures on October 30, 2025, and it provides for borrowings of a maximum commitment of $300,000 and up to $30,000 for the issuance of standby and commercial letters of credit. The Revolving Loan also provides for $25,000 for swingline loans and no sub-limit . Borrowings under the Revolving Loan bear interest at a rate equal to, at the Company’s option, either (i) LIBOR for the relevant interest period, adjusted for statutory reserve requirements (subject to a floor of 0.00% per annum), plus an applicable margin or (ii) a base rate equal to the highest of (a) the rate of interest publicly announced from time to time by the administrative agent as its “prime rate”, (b) the federal funds effective rate plus 0.50% and (c) adjusted LIBOR for an interest period of one month plus 1.00% (subject to a floor of 0.00% per annum), in each case, plus an applicable margin. The applicable margin can fluctuate based on the average leverage ratio, as defined in the Secured Credit Facility. Interest is payable in March, June, September and December during the term of the agreement on the last business day of the calendar quarter. There were no outstanding borrowings on the Revolving Loan as of June 30, 2021. The Secured Credit Facility contains certain restrictive covenants relating to, among other things, limitations on indebtedness, transactions with affiliates, sales of assets, acquisitions, and members’ distributions. In addition, above a certain borrowing level, there is a financial covenant relating to the Company’s average leverage ratio. As of June 30, 2021, the Company was in compliance with all debt covenants. Senior Facility Prior to the retirement of the Senior Facility described above, borrowings under the Senior Facility’s revolving line of credit bore interest at a rate equal to, at the Company’s option, either: (i) LIBOR for the relevant currency borrowed, plus an applicable margin; or (ii) a base determined by reference to the highest of: (a) the prime rate, (b) the federal funds effective rate plus 0.5%, or (c) the LIBOR applicable for an interest period of one month plus 1.0%, plus an applicable margin. As of September 30, 2020, the interest rate on the term loan under the Senior Facility was LIBOR plus 2.25%. There were no outstanding borrowings on the revolving line of credit as of September 30, 2020.

Derivative Instruments

Derivative Instruments	9 Months Ended
	Jun. 30, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments	7. Derivative Instruments Interest Rate Swap Contracts The Company uses interest rate swap contracts to minimize the effect of fluctuating variable interest rates under the Senior Facility and the Secured Credit Facility on Interest expense within its reported operating results. As cash flow hedges, the interest rate swaps are revalued at current market rates, with the changes in valuation reflected directly in Other comprehensive income (loss). The gains or losses on the interest rate swaps reported in Accumulated other comprehensive income (loss) in members’ equity are reclassified into Interest expense in the periods in which the monthly interest settlement is paid on the interest rate swap. See Note 11 for further information. The notional values of the Company’s outstanding interest rate swap contracts were as follows: June 30, September 30, Interest rate swap contracts $ 1,220,000 $ 410,000 On October 30, 2020, the Company completed a series of transactions to amend and extend certain interest rate swap agreements by an additional three years. These interest rate swap transactions consisted of the following: (i) $360,000 of the interest rate swaps were de-designated pay-variable pay-fixed pay-fixed at-market At the time of the de-designation de-designated de-designated The new pay-fixed Derivatives and Hedging at-market at-market one-month one-month pay-fixed at-market operating activities. Foreign Currency Forward Contracts The Company enters into foreign currency forward contracts to minimize the effect of fluctuating variable foreign currency denominated cash flows impacting gross profit within its reported operating results. As cash flow hedges, the forward contracts are revalued at current foreign exchange rates with the changes in the valuation reflected directly in Accumulated other comprehensive income (loss). The gains or losses on the forward contracts reported in Accumulated other comprehensive income (loss) in members’ equity are reclassified into Cost of goods sold in the period or periods in which the foreign currency denominated sale of inventory is made to a third party and the contracts are de-designated. de-designated The notional values of the Company’s outstanding foreign currency forward contracts were as follows: June 30, (unaudited) September 30, Foreign currency forward contracts $ 25,445 $ 5,730 See Note 11 for further information. Cash Flow Hedges Impact on the Condensed Consolidated Statements of Comprehensive Income For derivatives designated as cash flow hedges, the (loss) gain recognized in Other comprehensive income (loss) was: Three Months Ended June 30, Nine Months Ended June 30, 2021 2020 2021 2020 Interest rate swap contracts $ (7,059 ) $ (3,630 ) $ 11,406 $ (20,337 ) Foreign currency forward contracts — — (117 ) (57 ) Total (loss) gain recognized $ (7,059 ) $ (3,630 ) $ 11,289 $ (20,394 ) Cash Flow Hedges Impact on the Condensed Consolidated Statements of Income For derivatives designated as cash flow hedges, the loss reclassified from Accumulated other comprehensive income (loss) into the condensed consolidated statements of income was: Three Months Ended June 30, Nine Months Ended June 30, 2021 2020 2021 2020 Interest rate swap contracts $ (2,669 ) $ (1,634 ) $ (7,782 ) $ (2,325 ) Foreign currency forward contracts (117 ) — (249 ) (57 ) Total (loss) gain recognized $ (2,786 ) $ (1,634 ) $ (8,031 ) $ (2,382 ) For derivatives de-designated Three Months Ended June 30, Nine Months Ended June 30, 2021 2020 2021 2020 Foreign currency forward contracts $ (141 ) $ (1,093 ) $ 776 $ 1,222 As of June 30, 2021, the Company estimates that it will recognize approximately $10,662 of losses associated with the above contracts in net income within the next 12 months. Commodity Index Contracts The Company enters into commodity index contracts to minimize the effect of fluctuating variable costs relating to the purchases of aluminum and steel-based components and raw materials. The commodity index contracts are accounted for as financial instruments and the Company did not apply hedge accounting. The Company did not enter into commodity index contracts during the nine months ended June 30, 2020. As financial instruments, the commodity index hedges are revalued at current commodity index rates with the changes in the valuation reflected directly in Cost of goods sold. The Company recorded a corresponding gain on the change in fair market value as follows:​​​​​​​ Three Months Ended June 30, Nine Months Ended June 30, 2021 2020 2021 2020 Commodity index contracts $ (1,508 ) $ — $ (7,099 ) $ — See Note 11 for further information.​​​​​​​

Income Taxes

Income Taxes	9 Months Ended
	Jun. 30, 2021
Income Tax Disclosure [Abstract]
Income Taxes	8. Income Taxes For the three months ended June 30, 2021, the Company recognized tax expense of taxes . The Company’s effective tax rate of for the release of valuation allowances on our taxes for the release of valuation allowances on our For the three months ended June 30, 2020, we recognized tax expense of $8,548 on income before taxes

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Jun. 30, 2021
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	9. Commitments and Contingencies Warranty The following is an analysis of product warranty reserves and charges against those reserves: Balance at September 30, 2020 $ 21,909 Accrual for warranties issued 8,737 Acquired June warranty reserve 759 Warranty settlements made (6,170 ) Balance at June 30, 2021 $ 25,235 Balance at September 30, 2019 $ 19,515 Accrual for warranties issued 6,172 Warranty settlements made (3,424 ) Balance at June 30, 2020 $ 22,263 The balance of warranty reserves recorded in Other long-term liabilities was $20,384 and $17,995 as of June 30, 2021 and September 30, 2020, respectively. The remaining current balances of $4,851 and $3,914 as of June 30, 2021 and September 30, 2020, respectively, were recorded in Accrued expenses. Contingent Consideration As part of the 2016 acquisition of all aspects of the business related to iGrill and Kitchen Thermometer products from iDevices, LLC (“iDevices”), the Company has future cash payments due to iDevices in conjunction with an earn-out earn-out E The lease of the Europe manufacturing facility commenced during the quarter ended June 30, 2021. The lease term is 15 years. In addition, the Company has options to extend the lease term for five-year periods as allowed by local laws and regulatory requirements. The annual cash rental payments due under the lease agreement in the first year are $2,424 and will increase each year by the increase in the Harmonized Index of Consumer Prices or 1.25%, whichever is lower, through the end of the lease term. This lease also requires the Company to pay real estate taxes and maintenance costs on the facility. Legal Proceedings The Company is subject to a variety of investigations, claims, suits and other legal proceedings that arise from time to time in the ordinary course of business including, but not limited to, intellectual property, employment, tort, and breach of contract matters. The Company currently believes that the outcomes of such proceedings, individually and in the aggr e

Related Parties

Related Parties	9 Months Ended
	Jun. 30, 2021
Related Party Transactions [Abstract]
Related Parties	10. Related Parties Periodically, the Company engages in transactions with related parties, which include entities that are owned in whole or in part by certain owners or employees of the Company. The Company leases certain manufacturing and office facilities in the U.S. from related parties. Rental expense amounted to $281 and $238 for the three months ended June 30, 2021 and 2020, respectively, and $801 and $714 for the nine months ended June 30, 2021 and 2020, respectively. The Company had related party operating right-of-use non-current The Company has a royalty agreement with a related party for the use of the Company’s trademark. Royalty revenue from this agreement was $128 and $34 for the three months ended June 30, 2021 and 2020 and $75 and $316, respectively, for the nine months ended June 30, 2021 and 2020, respectively. Fiscal year 2021 royalty revenues reflect the impact of a retroactive discount totaling $110, which was granted to the related party as a COVID-19 As described in Note 5, the Company entered into a series of transactions with June. As of June 30, 2021 and September 30, 2020, the Company recorded prepaid royalties of $0 and $10,044, respectively. For the three months ended June 30, 2021 and 2020, the Company recorded royalty expense of $0 and $471, respectively, and $268 and $1,574 for the nine months ended June 30, 2021 and 2020, respectively. As a result of the acquisition described in Note 4, June has become a wholly-owned subsidiary of the Company and is consolidated in its financial statements. As such, the Company will no longer record related party transactions with June. The Company has notes receivable due from members, including interest, of $11,221 and $9,284 at June 30, 2021 and September 30, 2020, respectively. Related party interest income associated with the full recourse member notes was $11 and $14 for the three months ended June 30, 2021 and 2020, respectively, and $40 and $42 for the nine months ended June 30, 2021 and 2020, respectively. See Note 16 for further information.

Fair Value of Financial Instrum

Fair Value of Financial Instruments	9 Months Ended
	Jun. 30, 2021
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	11. Fair Value of Financial Instruments With respect to financial assets and liabilities, fair value is defined as the exchange price that would be received for an asset, or paid to transfer a liability (an exit price), in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. Valuation techniques used to measure fair value must maximize the use of observable inputs and minimize the use of unobservable inputs. A fair value hierarchy has been established based on three levels of inputs, of which the first two are considered observable and the last unobservable. • Level 1—Quoted prices in active markets for identical assets or liabilities. These are typically obtained from real-time quotes for transactions in active exchange markets involving identical assets. • Level 2—Inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly. These are typically obtained from readily available pricing sources for comparable instruments. • Level 3—Unobservable inputs, where there is little or no market activity for the asset or liability. These inputs reflect the reporting entity’s own assumptions of the data that market participants would use in pricing the asset or liability based on the best information available in the circumstances. The Company had interest rate swap contracts held with financial institutions as of June 30, 2021 and September 30, 2020, classified as Level 2 financial instruments, which are valued using observable underlying interest rates and market-determined risk premiums at the reporting date. The Company had foreign currency forward contracts held with financial institutions as of June 30, 2021 and September 30, 2020, classified as Level 2 financial instruments, which are valued using observable forward foreign exchange rates at the reporting date. The Company had commodity index contracts held with financial institutions as of June 30, 2021 and September 30, 2020, classified as Level 2 financial instruments, which are valued using observable commodity index rates at the reporting date . The Company had a contingent consideration liability as of June 30, 2021 and September 30, 2020, classified as a Level 3 instrument, in conjunction with its fiscal year ended September 30, 2016 acquisition of all aspects of the business related to iGrill and Kitchen Thermometer products from iDevices. The fair value of these estimated future cash payments was determined based on valuation methods and estimates of future cash flows. See Note 9 for further details. The fair value of financial assets and liabilities measured on a recurring basis was as follows: Level 1 Level 2 Level 3 Prepaid expenses and other current assets: Foreign currency forward contracts $ 151 $ — $ 151 $ — Commodity index contracts 4,959 — 4,959 — Interest rate swap contracts 8,996 — 8,996 — Total $ 14,106 $ — $ 14,106 $ — Other long-term assets: Interest rate swap contracts $ 28,900 $ — $ 28,900 $ — Total $ 28,900 $ — $ 28,900 $ — Accrued expenses: Interest rate swap contracts $ 14,867 $ — $ 14,867 $ — Total $ 14,867 $ — $ 14,867 $ — Other long-term liabilities: Interest rate swap contracts $ 43,564 $ — $ 43,564 $ — Contingent consideration 472 — — 472 Total $ 44,036 $ — $ 43,564 $ 472 September 30, Level 1 Level 2 Level 3 Accrued expenses: Foreign currency forward contracts $ 233 $ — $ 233 $ — Commodity index contracts 73 — 73 — Interest rate swap contracts 9,324 — 9,324 — Total $ 9,630 $ — $ 9,630 $ — Other long-term liabilities: Interest rate swap contracts $ 27,296 $ — $ 27,296 $ — Commodity index contracts 28 28 Contingent consideration 700 — — 700 Total $ 28,024 $ — $ 27,324 $ 700 The table below sets forth a summary of changes in fair value of the contingent consideration using Level 3 assumptions: Balance at September 30, 2020 $ 700 Royalty payments (228 ) Balance at June 30, 2021 $ 472 Balance at September 30, 2019 $ 1,610 Royalty payments (1,521 ) Fair value adjustments 730 Balance at June 30, 2020 $ 819 The carrying amounts reported in the Company’s accompanying condensed consolidated balance sheets for cash and cash equivalents, accounts receivable, and trade accounts payable approximate their fair values due to the short-term nature of these instruments. The carrying amounts reported in the Company’s accompanying condensed consolidated balance sheets for variable rate, revolving loan facilities also approximate fair values. The fair value of the fixed rate debt is not readily determinable, because the information is not available.

Management Incentive Compensati

Management Incentive Compensation Plan	9 Months Ended
	Jun. 30, 2021
Equity [Abstract]
Management Incentive Compensation Plan	12. Management Incentive Compensation Plan Since the fiscal year ended September 30, 2011, the Company has issued individual Management Incentive Compensation Plan (“LTIP” or the “Plan”) agreements. The Plan authorizes the grant of awards to certain key officers or employees of the Company and its subsidiaries. These awards (the “Awards”) each represent a contractual right to payment of compensation in the future based on a calculated value as defined in the Plan. The Awards are not units of the Company’s common stock, and a recipient of the Awards does not receive any ownership interest in the Company, member voting rights, or other incidents of ownership. A total of $2,928 and $1,015 was paid out under the Plan during the nine months ended June 30, 2021 and 2020, respectively. Under the Plan, participants holding vested awards are entitled to receive cash payments on a pro rata basis in relation to any payments made to the holders of the Company’s common units paid in a general distribution. During the three and nine months ended June 30, 2021 participants received cash payments of $313 in conjunction with the payment of general distributions. During the three and nine months ended June 30, 2020, participants received no cash payments as a result of a general distribution. The Company had actual forfeitures in the amount of $244 and $0 for the three months ended June 30, 2021 and 2020, respectively, and $244 and $0 for the nine months ended June 30, 2021 and 2020, respectively. The Company recorded additional compensation expense, due to an increase in the value of the awards, of $3,408 and $975 for the three months ended June 30, 2021 and 2020, respectively, and $5,422 and $1,725 for the nine months ended June 30, 2021 and 2020, respectively. The total liability related to the Plan was $9,202 and $7,021 as of June 30, 2021 and September 30, 2020, respectively. The current portion of this liability is $216 and $2,851 as of June 30, 2021 and September 30, 2020, respectively, and is included in Accrued expenses to reflect the expected payout of these Awards during the next twelve months. The remaining liability is included in Other long-term liabilities. As of June 30, 2021, the Company had not yet recognized compensation cost on unvested awards of $7,902, with a weighted average remaining recognition period of 1.85 years.

Profits Interest Plan

Profits Interest Plan	9 Months Ended
	Jun. 30, 2021
Profits Interest Plan [Abstract]
Profits Interest Plan	13. Profits Interest Plan (amounts in thousands, except unit and per unit data) The Company grants profits interest units with vesting periods ranging from one one In April 2021, the Company granted additional profits interest units to employees. In addition to the vesting terms outlined within this footnote, a portion of the new grants vest based on the Company’s achievement of certain performance objectives associated with net sales. Expense associated with these awards will be recognized over the applicable vesting period if it is deemed probable that the performance conditions will be met at the end of each reporting period. The profits interest units are granted in three separate tranches, each of which is subject to a different distribution threshold. The tranches are subject to distribution thresholds that exceed the implied equity value of the Company at the time of grant, which were established in order to incentivize higher levels of performance. During the quarter ended June 30, 2021, the Company amended the profits interest plan to include an antidilution provision which resulted in a decrease to the distribution thresholds under each tranche. As the profits interest are liability classified, they were remeasured at fair value at the end of the reporting period using the updated distribution thresholds post modification. Prior to the quarter ended June 30, 2021, one third of the profits interest units had a distribution threshold of $2,000,000, one third of the profits interest units had a distribution threshold of $2,500,000, and one third of the profits interest units had a distribution threshold of $3,000,000. Subsequent to the April 2021 grants and plan amendment, the profits interest units and their corresponding distribution thresholds were as follows as of June 30, 2021: Distribution Threshold Units $ 1,550,000 – 1,700,000 8,213 $ 2,000,000 – 2,200,000 8,213 $ 2,450,000 – 2,650,000 16,595 $ 2,800,000 – 2,900,000 2,350 Total 35,371 The weighted average distribution threshold for units outstanding as of June 30, 2021 was $3,902 per unit. The profits interest units do not require the payment of an exercise price, but since they are economically similar to stock options they are treated as an instrument with an option like feature. The following tables summarize the Company’s profits interest units activity: Units Outstanding Balance as of September 30, 2020 24,638 Units granted 10,733 Units exercised — Units forfeited or canceled — Balance at June 30, 2021 35,371 Units Balance as of September 30, 2020 — Units vested 5,545 Units exercised — Units forfeited or canceled — Balance at June 30, 2021 5,545 The aggregate intrinsic value of all units outstanding was $ and $ as of June 30, 2021 and September 30, 2020, respectively. The aggregate intrinsic value of all vested units was $ and $ as of June 30, 2021 and September 30, 2020, respectively. The associated liability and unit based compensation for units granted under the Profits Interest Plan is determined using the Black-Scholes option pricing model. See Note 1 for discussion of the change in accounting principle regarding the valuation of the profits interest units. The units are liability classified and are revalued each reporting period. The weighted-average assumptions used to estimate the fair value of the profits interest units, which were outstanding as of June 30, 2021 are as follows: Fair value per unit $ 3,853 Expected term (in years) 1.53 Risk-free interest rate 0.07-0.67 % Expected volatility 37.4 % Expected dividend yield — % The fair value of vested units as of June 30, 2021 and September 30, 2020 was $15,873 and $0, respectively. The total fair value was recognized as compensation expense within Selling, general and administrative expenses during the three and nine months ended June 30, 2021, respectively, and is included in Other long-term liabilities. As of June 30, 2021, there was $ non-vested

Segments

Segments	9 Months Ended
	Jun. 30, 2021
Segment Reporting [Abstract]
Segments	14. Segments The Company has three operating segments, Americas, which consists of Canada, Chile, Mexico and the United States; the European, Middle East and African regions (“EMEA”); and the Asia-Pacific region (“APAC”), which includes Australia and New Zealand. The Company’s reportable segments consist of Americas, EMEA and APAC. Corporate/Other is not an operating segment and includes unallocated corporate and certain supply chain expenses and assets (consisting primarily of cash, land, buildings and equipment, certain intangible assets (trademark) and deferred tax assets), inter-segment eliminations and other adjustments to segment results necessary for the presentation of condensed consolidated financial results in accordance with GAAP. Internal revenue transactions between the Company’s segments are immaterial. Each operating segment derives its revenues from the provision of gas, charcoal, electric and pellet grills and related accessories to customers. The Company’s Chief Operating Decision Maker (“CODM”) is the Chief Executive Officer (“CEO”). The CEO reviews financial information presented on a consolidated basis, accompanied by disaggregated information about the Company’s revenue and profitability, for purposes of making operating decisions, assessing financial performance and allocating resources. The CODM receives discrete financial information by segment. The CODM reviews adjusted income from operations as the key segment measure of performance. Adjusted income from operations is defined as income from operations adjusted for unallocated net expenses, non-cash The information below summarizes key financial performance measures by reportable segment: Three Months Ended June 30, 2021 Americas EMEA APAC Corporate/Other Total Net sales $ 339,441 $ 306,668 $ 22,758 $ — $ 668,867 Adjusted income from operations (1) $ 61,206 $ 108,380 $ 1,989 $ (69,996 ) $ 101,579 Depreciation and amortization $ 2,331 $ 417 $ 1,527 $ 7,804 $ 12,079 Capital expenditures $ 26 $ 8,836 $ 503 $ 13,784 $ 23,149 Three Months Ended June 30, 2020 Americas EMEA APAC Corporate/Other Total Net sales $ 315,053 $ 227,552 $ 18,188 $ — $ 560,793 Adjusted income from operations (1) $ 70,153 $ 79,447 $ 3,490 $ (52,750 ) $ 100,340 Depreciation and amortization $ 169 $ 453 $ 280 $ 9,552 $ 10,454 Capital expenditures $ — $ 73 $ 119 $ 4,254 $ 4,446 Nine Months Ended June 30, 2021 Americas EMEA APAC Corporate/Other Total Net sales $ 891,649 $ 617,995 $ 122,532 $ — $ 1,632,176 Adjusted income from operations (1) $ 178,246 $ 206,516 $ 28,963 $ (163,976 ) $ 249,749 Depreciation and amortization $ 4,474 $ 1,287 $ 2,254 $ 24,392 $ 32,407 Capital expenditures $ 183 $ 11,956 $ 1,162 $ 27,202 $ 40,503 Nine Months Ended June 30, 2020 Americas EMEA APAC Corporate/Other Total Net sales $ 649,913 $ 434,755 $ 72,501 $ — $ 1,157,169 Adjusted income from operations (1) $ 139,082 $ 125,187 $ 15,778 $ (128,462 ) $ 151,585 Depreciation and amortization $ 521 $ 1,534 $ 821 $ 29,050 $ 31,926 Capital expenditures $ 39 $ 5,797 $ 655 $ 16,218 $ 22,709 (1) Adjusted income from operations for each reportable segment includes cost of goods sold transfer price allocations and distribution allocations from Corporate/Other. Corporate/Other includes unallocated corporate and certain supply chain expenses, inter-segment eliminations and other adjustments, including business and operational transformation costs, debt refinancing and IPO costs and COVID-19 Reconciliations The information below provides a reconciliation of adjusted income from operations to income before taxes: Three Months Ended Nine Months Ended 2021 2020 2021 2020 Segment adjusted income from operations Americas $ 61,206 $ 70,153 $ 178,246 $ 139,082 EMEA 108,380 79,447 206,516 125,187 APAC 1,989 3,490 28,963 15,778 Segment adjusted income from operations for reportable segments 171,575 153,090 413,725 280,047 Unallocated net expenses (69,996 ) (52,750 ) (163,976 ) (128,462 ) Adjustments to income before taxes Non-cash (61,714 ) (975 ) (94,193 ) (1,867 ) Gain on disposal of assets held for sale — — 5,185 — Interest income 252 311 677 1,012 Interest expense (18,283 ) (10,895 ) (50,457 ) (32,006 ) Loss from early extinguishment of debt — — (5,448 ) — Income before taxes $ 21,834 $ 88,781 $ 105,513 $ 118,724 The information below provides a reconciliation of segment assets to total consolidated assets: June 30, 2021 Americas EMEA APAC Corporate/Other Total Segment assets (1) $ 179,579 $ 112,414 $ 41,942 $ — $ 333,935 All other (2) 1,364,222 Total assets $ 1,698,157 September 30, 2020 Americas EMEA APAC Corporate/Other Total Segment assets (1) $ 120,351 $ 77,477 $ 35,499 $ — $ 233,327 All other (2) 906,108 Total assets $ 1,139,435 (1) Inventory is the only segment asset reviewed by the CODM. (2) “All other” consists of assets that are not reviewed by the CODM at a segment level: cash and cash equivalents; accounts receivable; prepaid expenses and other current assets; property, equipment and leasehold improvements, net; operating lease right-of-use

Income Per Unit

Income Per Unit	9 Months Ended
	Jun. 30, 2021
Earnings Per Unit [Abstract]
Income Per Unit	15. Income Per Unit The computation of net income per common unit is as follows: Three Months Ended June 30, Nine Months Ended June 30, (in thousands, except unit and per unit data) 2021 2020 2021 2020 Net income $ 17,825 $ 79,455 $ 91,620 $ 103,062 Less: Net earnings allocated to participating securities (129 ) (721 ) (730 ) (1,006 ) Net income attributable to common members $ 17,696 $ 78,734 $ 90,890 $ 102,056 Units used in computation: Basic and diluted weighted-average common units outstanding (1) 538,777 551,774 547,515 551,760 Basic and diluted net income per common unit $ 32.84 $ 142.69 $ 166.00 $ 184.97 (1) Amount excludes 2,443 and 2,263 Weber common units issued in exchange for partial-recourse notes in both the three and nine months ended June 30, 2021 and 2020, respectively. See Note 16 for further information.

Member Notes

Member Notes	9 Months Ended
	Jun. 30, 2021
Related Party Transactions [Abstract]
Member Notes	16. Member Notes During the nine months ended June 30, 2021 and 2020, certain employees of the Company purchased common units in exchange for a capital contribution of $14,733 and $500, respectively. In conjunction with the units purchased, the Company entered into notes receivable with certain individuals during the nine months ended June 30, 2021 and 2020 with face values of $11,776 and $375, respectively. As of June 30, 2021 and September 30, 2020, $10,479 and $7,295 of the issued member notes receivable, respectively, limit the recourse provisions of the Company to 50% should the value of the common units not be sufficient to satisfy the repayment of the member notes. In accordance with ASC 718, these member notes are accounted for as nonrecourse in their entirety as the limited recourse provisions of the member notes are not aligned with a corresponding percentage of the underlying common units. Therefore, the member notes are accounted for as if they were a stock option grant and no receivable for amounts due under the notes are recorded on the Company’s condensed consolidated balance sheet. As there is no requisite service period associated with the notes, unit based compensation expense related to this award is being recognized upon issuance of the note based on the grant-date fair value of the award, which was determined using the Black-Scholes option-pricing model. Unit based compensation recognized in relation to the notes amounted to $4,511 and $0 for the three months ended June 30, 2021 and 2020, respectively, and $4,941 and $142 for the nine months ended June 30, 2021 and 2020, respectively. The Company received $ and $ from certain borrowers of member notes to pay down the outstanding balance of partial recourse member notes during the months ended June , , and June , , respectively. As partial recourse notes are not reflected in the accompanying condensed consolidated financial statements, the paydown of the partial recourse notes was accounted for as a capital contribution. All member notes bear interest at 2% to 4% per annum, dependent upon the specific rate terms in the notes. Interest on member notes is compounded annually. Interest on full recourse member notes is recognized in Interest income in the accompanying condensed consolidated statements of income. Interest on partial recourse member notes will be recognized in members’ equity as cash payments are made to the Company. The total amount due from members on the notes receivable, including interest, was $11,221 and $9,284 as of June 30, 2021 and September 30, 2020, respectively. The notes receivable and the related accrued interest for full recourse notes of $741 and $1,483 as of June 30, 2021 and September 30, 2020, respectively, are reflected as reductions of members’ equity in the accompanying condensed consolidated statements of changes in members’ equity (deficit). The notes receivable outstanding and the related accrued interest for partial recourse notes are not reflected in the accompanying condensed consolidated financial statements, as they are accounted for as nonrecourse in their entirety. They will be recognized in members’ equity in the accompanying condensed consolidated statements of changes in members’ equity (deficit) when cash payments on these notes receivable and related accrued interest are made to the Company. Effective January 1, 2015, the individuals holding these member notes, along with other individuals, assigned their common units of the Company to Weber-Stephen Management Pool LLC (“MPLLC”). The sole purpose of MPLLC is to hold such common units. As a result of this transaction, the relative ownership interests in the Company held by those individuals did not change and the member notes remain as due to the Company. Common unit purchases during the nine months ended June 30, 2021 and 2020 were transacted through MPLLC.

Subsequent Events

Subsequent Events	9 Months Ended
	Jun. 30, 2021
Subsequent Event [Line Items]
Subsequent Events	17. Subsequent Events In August 2021, Weber Inc. completed its IPO and consummated the following transactions . The Reorganization Transactions Reorganization In connection with the closing of the IPO, the following Reorganization Transactions were consummated: • Weber Merger Sub, LLC (“Weber Merger Sub”), a subsidiary of Weber Inc. formed in April 2021, merged with and into BDT WSP Blocker, LLC (“Blocker”), an entity controlled by BDT Capital Partners, LLC, our sponsor, with Blocker surviving the merger. As a result, (i) the Blocker equityholders received Class A common stock of Weber Inc. in exchange for their equity interests in Blocker, (ii) the nominal shares of Weber Inc. held by Weber-Stephen Products LLC were canceled for no consideration (because Weber Inc. was originally formed as a subsidiary of Weber-Stephen Products LLC) and (iii) Weber Inc. became wholly owned by the former Blocker equityholders; • Blocker then merged with and into Weber Inc., with Weber Inc. surviving the merger. Weber Inc.’s certificate of incorporation was amended to authorize the issuance of two classes of common stock: Class A common stock and Class B common stock, which we refer to collectively as our “common stock.” Each share of Class A common stock and Class B common stock will entitle its holder to one vote per share on all matters submitted to a vote of our stockholders; • WSP Merger Sub, a subsidiary of WSP Intermediate formed in April 2021, merged with and into Weber-Stephen Products LLC, with Weber-Stephen Products LLC surviving the merger. As a result, (i) the Pre-IPO LLC Members received non-voting common interest units (the “LLC Units”) in Weber HoldCo LLC in exchange for all of their equity interests in Weber-Stephen Products LLC, (ii) Weber-Stephen Management Pool LLC received LLC Units in exchange for all equity interest that it holds in Weber-Stephen Products LLC and profits interests in Weber HoldCo LLC with terms substantially similar to the terms of the profits interests that it holds in Weber-Stephen Products LLC and (iii) Weber-Stephen Products LLC became a wholly owned subsidiary of Weber HoldCo LLC; • an amended limited liability company operating agreement (“Amended LLC Agreement”) was adopted for Weber HoldCo LLC making Weber Inc. the sole managing member of Weber HoldCo LLC; • Pre-IPO Pre-IPO • Weber Inc. issued 17.9 million shares of its Class A common stock to the public pursuant to the IPO; and • Weber Inc. entered into a tax receivable agreement with the Pre-IPO Exchange Mechanics Under the Amended LLC Agreement, all current and future holders of LLC Units, including the Pre-IPO one-for-one Consolidation With the Reorganization Transactions and IPO executed, Weber Inc. now manages and operates the business and controls the strategic decisions and day-to-day Pre-IPO Pre-IPO Income Taxes and Tax Receivable Agreement Weber Inc. entered into a tax receivable agreement that obligates Weber Inc. to make payments to the Pre-IPO step-up Pre-IPO Stockholders Agreement Weber Inc. and the Pre-IPO Pre-IPO Pre-IPO The IPO In connection with the completion of the IPO, Weber Inc. issued 17.9 million shares of Class A common stock to the purchasers of the IPO. Weber Inc. used the net proceeds from the offering to acquire 17.9 million newly issued LLC Units from Weber HoldCo LLC at a price per LLC Unit equal to the IPO price of Weber Inc.’s Class A common stock minus underwriting discounts, which represented an aggregate price of $237,500. The purchase of newly issued LLC Units collectively represented 6% of Weber HoldCo LLC’s outstanding LLC Units. Weber HoldCo LLC used Greenshoe Shares Subsequent to the IPO, the underwriters exercised the options granted to them to purchase additional shares of Weber Inc. A total of 2.7 million shares of Class A common stock was purchased. Weber Inc. used the net proceeds from the offering to acquire (i) 0.3 million shares of Class A common stock from Blocker equityholders, and (ii) 2.3 million of LLC Units from Weber HoldCo LLC, in each case, at a price per share and per LLC Unit equal to the IPO price of Weber Inc.’s Class A common stock, minus underwriting discounts, which represented an aggregate price of $35,625. Weber HoldCo LLC used the proceeds to buy back LLC Units from existing Weber HoldCo LLC unit holders. Profits Interest In connection with the completion of the IPO and the Reorganization Transactions, Weber Inc. modified its profits interest plans to be redeemed for newly issued shares of Class A common stock on a one-for-one
WEBER INC [Member]
Subsequent Event [Line Items]
Subsequent Events	4. Subsequent Events In August 2021, the Company completed its initial public offering (“IPO”) and consummated the transactions outlined below. Following this offering, Weber Inc. became a holding company with its sole asset being a controlling equity interest in Weber HoldCo LLC; Weber-Stephen Products LLC is a wholly owned subsidiary of Weber HoldCo LLC. All of Weber-Stephen Products LLC’s outstanding equity interests prior to the IPO were owned by the following persons and entities, referred to as the “Pre-IPO Members”: • BDT WSP Holdings, LLC, an entity controlled by BDT Capital Partners, LLC, the Company’s sponsor; • WSP Investment LLC, an entity held by the Stephen family; • Weber-Stephen Management Pool LLC, an entity held by current and former members of the Company’s management team and directors; and • certain other historical equityholders. The Reorganization Transactions Reorganization In connection with the closing of the IPO, the following Reorganization Transactions were consummated: • Weber Merger Sub, LLC (“Weber Merger Sub”), a subsidiary of Weber Inc. formed in April 2021, merged with and into BDT WSP Blocker, LLC (“Blocker”), an entity controlled by BDT Capital Partners, LLC, our sponsor, with Blocker surviving the merger. As a result, (i) the Blocker equityholders received Class A common stock of Weber Inc. in exchange for their equity interests in Blocker, (ii) the nominal shares of Weber Inc. held by Weber-Stephen Products LLC were canceled for no consideration (because Weber Inc. was originally formed as a subsidiary of Weber-Stephen Products LLC) and (iii) Weber Inc. became wholly owned by the former Blocker equityholders; 5 • Blocker then merged with and into Weber Inc., with Weber Inc. surviving the merger. Weber Inc.’s certificate of incorporation was amended to authorize the issuance of two classes of common stock: Class A common stock and Class B common stock, which we refer to collectively as our “common stock.” Each share of Class A common stock and Class B common stock will entitle its holder to one vote per share on all matters submitted to a vote of our stockholders; • WSP Merger Sub, a subsidiary of WSP Intermediate formed in April 2021, merged with and into Weber-Stephen Products LLC, with Weber-Stephen Products LLC surviving the merger. As a result, (i) the Pre-IPO non-voting • an amended limited liability company operating agreement (“Amended LLC Agreement”) was adopted for Weber HoldCo LLC making Weber Inc. the sole managing member of Weber HoldCo LLC; • Pre-IPO Pre-IPO • Weber Inc. issued 17.9 million shares of its Class A common stock to the public pursuant to the IPO; and • Weber Inc. entered into a tax receivable agreement with the Pre-IPO Exchange Mechanics Under the Amended LLC Agreement, all current and future holders of LLC Units, including the Pre-IPO one-for-one Consolidation With the Reorganization Transactions and IPO executed, Weber Inc. now manages and operates the business and controls the strategic decisions and day-to-day Pre-IPO Pre-IPO Income Taxes and Tax Receivable Agreement Weber Inc. entered into a tax receivable agreement that obligates Weber Inc. to make payments to the Pre-IPO step-up Pre-IPO Stockholders Agreement Weber Inc. and the Pre-IPO Pre-IPO Pre-IPO The IPO In connection with the completion of the IPO, Weber Inc. issued 17.9 million shares of Class A common stock to the purchasers of the IPO. Weber Inc. used the net proceeds from the offering to acquire 17.9 million newly issued LLC Units from Weber HoldCo LLC at a price per LLC Unit equal to the IPO price of Weber Inc.’s Class A common stock minus underwriting discounts, which represented an aggregate purchase price of $237,500. The purchase of newly issued LLC Units collectively represented 6% of Weber HoldCo LLC’s outstanding LLC Units. Weber HoldCo LLC used the proceeds from the sale of the LLC Units as follows: (i) to pay fees and expenses of approximately $17,368 in connection with the offering and the Reorganization Transactions, and (ii) to repay $220,132 of the outstanding borrowings under the Secured Credit Facility. Greenshoe Shares Subsequent to the IPO, the underwriters exercised the options granted to them to purchase additional shares of Weber Inc. A total of 2.7 million shares of Class A common stock was purchased. Weber Inc. used the net proceeds from the offering to acquire (i) 0.3 million shares of Class A common stock from Blocker equityholders, and (ii) 2.3 million of LLC Units from Weber HoldCo LLC, in each case, at a price per share and per LLC Unit equal to the IPO price of Weber Inc.’s Class A common stock, minus underwriting discounts, which represented an aggregate price of $35,625. Weber HoldCo LLC used the proceeds to buy back LLC Units from existing Weber HoldCo LLC unit holders.

Basis of Presentation and Sig_2

Basis of Presentation and Significant Accounting Policies (Policies)	9 Months Ended
	Jun. 30, 2021
Accounting Policies [Line Items]
Organization	Organization The Company is primarily a manufactur e
Principles of Consolidation	Principles of Consolidation The condensed consolidated financial statements include the accounts and operations of the Company and its wholly owned subsidiaries. All significant intercompany accounts and transactions have been eliminated in consolidation.
Fiscal Year	Fiscal Year The Company’s fiscal year runs from October 1 through September 30. All references to years are to fiscal years unless otherwise stated.
Use Of Estimates	Use of Estimates The preparation of condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the condensed consolidated financial statements and accompanying notes. Actual results could differ from those estimates. The effect of the change in the estimates will be recognized in the current period of the change.
Seasonality	Seasonality Although the Company generally has demand for its products throughout the year, the Company’s sales have historically experienced some seasonality. The Company has typically experienced its highest level of sales of its products in the second and third fiscal quarters as retailers across North America and Europe changeover their floor sets, build inventory and fulfill consumer demand for outdoor cooking products. Sales are typically lower during the first and fourth fiscal quarters, with the exception of the Australia/New Zealand business which is counter seasonal to the balance of the business.
Revenue Recognition	Revenue Recognition Revenue transactions associated with the sale of grills and related accessories comprise a single performance obligation, which consists of the transfer of products to customers at a point in time. Substantially all of the Company’s revenues relate to the sales of grills and accessories. The Company satisfies the performance obligation and records revenues for grills and accessories when control has passed to the customer, based on the terms of sale. Transfer of control passes to customers at a point in time, that point in time generally being upon shipment or upon delivery of the performance obligation, depending on the written sales terms with the customer. The Company’s purchase orders from customers for specific products represent its contracts and include all key terms and conditions related to the sale of products. For all sales, no significant uncertainty exists surrounding the customers’ obligation to pay for grills and accessories. Customers’ obligations to pay are generally under normal commercial terms, with payment terms typically being 30-60 The Company offers warranties on most of its products, which are considered assurance type warranties and, therefore, are not accounted for as a separate performance obligation. The Company has elected to account for shipping and handling activities as a fulfillment cost. Accordingly, all shipping and handling activity costs are recognized as Selling, general and administrative expenses at the time the related revenue is recognized. The Company recognized shipping and handling activity costs of $52,883 and $38,352 for the three months ended June 30, 2021 and 2020, respectively, and $126,783 and $84,724 for the nine months ended June 30, 2021 and 2020, respectively. Amounts invoiced to customers for shipping and handling are recorded in Net sales. Any taxes collected on behalf of government authorities are excluded from Net sales.
Accounts Receivable	Accounts Receivable Accounts receivable consist primarily of amounts due to the Company from its normal business activities, offset by an allowance for expected credit losses. The Company estimates its expected credit losses based on historical experience, the aging of accounts receivable, consideration of current economic conditions and its expectations of future economic conditions. Additionally, the Company establishes customer-specific allowances for known at-risk The Company’s allowances are as follows: Balance at September 30, 2020 $ 3,262 Charges (credits) to the provision, net 325 Accounts written off, net of recoveries (1,096 ) Balance at June 30, 2021 $ 2,491 Balance at September 30, 2019 $ 2,858 Charges (credits) to the provision, net 863 Accounts written off, net of recoveries (160 ) Balance at June 30, 2020 $ 3,561
Inventories	Inventories Inventories include finished products and work-in-process first-in, first-out The components of inventory are as follows: June 30, September 30, Work-in-process $ 48,041 $ 33,343 Finished products 285,894 199,984 Total Inventories, net $ 333,935 $ 233,327
Property, Equipment and Leasehold Improvements	Property, Equipment and Leasehold Improvements During the fiscal year ended September 30, 2020, the Company determined that one of its manufacturing sites was considered to be assets held for sale, since the asset group was being marketed for sale and all the criteria to be classified as held for sale under Accounting Standards Codification (“ASC”) 360, Property, Plant and Equipment—Impairment or Disposal of Long-Lived Assets
Warranty	Warranty The Company offers warranties on most of its products. The specific terms and conditions of the warranties offered by the Company vary depending upon the product sold. The Company estimates the costs that may be incurred under its warranty plans and the period for which claims are honored, and records a liability in the amount of such costs at the time product revenue is recognized. Factors that affect the Company’s warranty liability include the number of units sold, the type of products sold, historical and anticipated rates of warranty claims and cost per claim. The Company periodically assesses the adequacy of its recorded warranty liabilities and adjusts the amounts as necessary.
Deferred Financing Costs	Deferred Financing Costs Deferred financing costs are amortized over the term of the related debt. The carrying value of the deferred financing costs was $25,813 and $7,422 as of June 30, 2021 and September 30, 2020, respectively. Deferred financing costs related to long-term debt are reflected as a direct reduction of the carrying value of the related debt. Amortization expense of deferred financing costs was $955 and $856 for the three months ended June 30, 2021 and 2020, respectively, and $2,813 and $2,079 for the nine months ended June 30, 2021 and 2020, respectively, and was recorded in Interest expense.
Deferred Offering Costs	Deferred Offering Costs The Company capitalizes certain legal, accounting and other third-party fees that are directly associated with in-process in-process
Income Taxes	Income Taxes In the U.S., the Company, a limited liability company (LLC), is taxed as a partnership under the Internal Revenue Code. The Company’s income is included in the members’ income tax returns. Accordingly, the Company generally is not subject to federal or certain state income taxes. The Company has operations that are subject to income and other similar taxes in foreign countries. A valuation allowance is provided to offset deferred tax assets if, based on available evidence, it is more likely than not that some or all of the deferred tax assets will not be realized. In accordance with ASC 740, Income Taxes The Company’s practice is to recognize interest and penalties related to income tax matters in Income taxes in the accompanying condensed consolidated statements of income. For the three and nine months ended June 30, 2021 and 2020, there were no significant interest or penalties related to uncertain income tax positions that were recognized in the accompanying condensed consolidated statements of income.
Derivative Instruments	Derivative Instruments During the nine months ended June 30, 2021 and 2020, the Company used interest rate swap contracts to reduce its exposure to fluctuations in interest rates. During the nine months ended June 30, 2021 and 2020, the Company also entered into foreign currency forward contracts to reduce its exposure to fluctuations in foreign currency denominated sales and the respective cash flows impacting Gross profit. When entered, these financial instruments are designated as cash flow hedges of underlying exposures and de-designated de-designated During the nine months ended June 30, 2021, the Company used commodity index contracts to reduce its exposure to fluctuations in cash flows relating to the purchases of aluminum and steel-based components and raw materials impacting Gross profit. Cash flows related to the settlement of derivative instruments designated as cash flow hedges are classified within operating activities. Changes in the fair value of a derivative that is designated as a cash flow hedge, to the extent that the hedge is effective, are recorded in accumulated other comprehensive income (loss) and reclassified to earnings when the hedged item affects earnings. Using derivative instruments means assuming counterparty credit risk. Counterparty credit risk relates to the loss the Company could incur if a counterparty were to default on a derivative contract. The Company deals with only investment-grade counterparties and monitors the overall credit risk and exposure to individual counterparties. The Company did not experience any nonperformance by a counterparty during the nine months ended June 30, 2021 or 2020. The Company did not require, nor did it post, collateral or security on such contracts.
Business Combinations	Business Combinations The Company uses its best estimates and assumptions to assign fair value to the tangible and intangible assets acquired and liabilities assumed at the acquisition date. The Company’s estimates are inherently uncertain and subject to refinement. During the measurement period, which may be up to one year from the acquisition date, the Company may record adjustments to the fair value of these tangible and intangible assets acquired and liabilities assumed, with the corresponding offset to goodwill. The Company continues to collect information and reevaluates these estimates and assumptions quarterly and records any adjustments to the Company’s preliminary estimates to goodwill provided that the Company is within the measurement period. Upon the conclusion of the measurement period or final determination of the fair value of assets acquired or liabilities assumed, whichever comes first, any subsequent adjustments are recorded to the Company’s condensed consolidated statements of income. In the event that the Company acquir e
Income (Loss) Per Unit	Income (Loss) Per Unit Basic income (loss) per unit is computed using the weighted-average number of outstanding common units during the period. Diluted income (loss) per unit is computed using the weighted- average number of outstanding common units and, when dilutive, potential common units outstanding during the period. For purposes of the diluted net income (loss) per unit calculation, common units issued in exchange for notes receivable with limited recourse provisions are considered to be potentially dilutive securities. See Note 15 for further information. Basic and diluted net income (loss) per unit attributable to common members is presented in conformity with the two-class two-class two-class
Unit Based Compensation	Unit Based Compensation As described within the Change in Accounting Principle section below, in anticipation of becoming a public company, the Company changed its methodology for valuing the profits interest units and Management Incentive Compensation Plan (“LTIP”) awards from the intrinsic value methodology to fair value during the quarter ended March 31, 2021. Both the LTIP awards and the profits interest units are liability classified. The awards are re-measured The value of the LTIP awards is based on achievement of performance metrics established by the Compensation Committee of the Board of Directors. The value of the awards at the end of each reporting period is dependent upon the Company’s estimates of the underlying performance measures. As the units issued are based on performance metrics, the expense is adjusted for the ultimate number of units expected to be issued as of the end of each reporting period. The fair value of the profits interest units is estimated using the Black-Scholes option-pricing valuation model. The determination of fair value using an option-pricing model is affected by the Company’s enterprise value as well as assumptions pertaining to several variables, including expected volatility, the expected term of the unit and the risk-free rate of interest. In the option-pricing model for the Company’s profits interest units, expected volatility is based on an analysis of reported data for a group of guideline publicly-traded companies. For this analysis, the Company selects companies with comparable characteristics including enterprise value, risk profiles, and with historical share price information sufficient to meet the expected life of the units. The Company determines expected volatility using an average of the historical volatilities of the guideline group of companies. The Company expects to continue to apply this process until such time as it has adequate historical data regarding volatility. The expected term of the unit is based on expected exercise patterns of unit holders and the risk-free rate of interest is based on U.S. Treasury yields.
Advertising Costs	Advertising Costs The Company expenses advertising costs upon the first display of the advertisement and includes advertising expenses in Selling, general and administrative expenses in the condensed consolidated statements of income. The Company incurred advertising expenses of $49,421 and $26,596 for the three months ended June 30, 2021 and 2020, respectively, and $84,921 and $46,991 for the nine months ended June 30, 2021 and 2020, respectively.
Research and Development Costs	Research and Development Costs Research and development costs are charged to expense as incurred and included in Selling, general and administrative expenses in the condensed consolidated statements of income. The Company incurred research and development expenses of $18,421 and $4,659 for the three months ended June 30, 2021 and 2020, respectively, and $28,619 and $11,967 for the nine months ended June 30, 2021 and 2020, respectively.
Change in Accounting Principle	Change in Accounting Principle Profits interest units and LTIP awards historically were accounted for as liability compensatory awards under ASC 710, Compensation—General Compensation—Stock Compensation re-measured expense of
New Accounting Pronouncements Recently Adopted	New Accounting Pronouncements Recently Adopted In March 2020, the FASB issued ASU 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting In December 2019, the FASB issued ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes 2019-12 2019-12 In August 2018, the FASB issued ASU 2018-15, Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement that is a Service Contract 2018-15 e In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework—Changes to the Disclosure Requirements for Fair Value Measurement 2018-13 . In June 2016, the FASB issued ASU 2016-13, Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments off-balance
New Accounting Pronouncements Issued but Not Yet Adopted	New Accounting Pronouncements Issued but Not Yet Adopted No recent accounting pronouncements were issued by the FASB that are believed by management to have a material impact on the Company’s future financial statements.
WEBER INC [Member]
Accounting Policies [Line Items]
Use Of Estimates	Use of Estimates The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual results could differ from those estimates. The effect of the change in the estimates will be recognized in the current period of the change.

Basis of Presentation and Sig_3

Basis of Presentation and Significant Accounting Policies (Tables)	9 Months Ended
	Jun. 30, 2021
Accounting Policies [Abstract]
Summary of Company's Allowances	The Company’s allowances are as follows: Balance at September 30, 2020 $ 3,262 Charges (credits) to the provision, net 325 Accounts written off, net of recoveries (1,096 ) Balance at June 30, 2021 $ 2,491 Balance at September 30, 2019 $ 2,858 Charges (credits) to the provision, net 863 Accounts written off, net of recoveries (160 ) Balance at June 30, 2020 $ 3,561
Summary of Components of Inventory	The components of inventory are as follows: June 30, September 30, Work-in-process $ 48,041 $ 33,343 Finished products 285,894 199,984 Total Inventories, net $ 333,935 $ 233,327

Goodwill and Other Intangibles

Goodwill and Other Intangibles (Tables)	9 Months Ended
	Jun. 30, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Summary of Company's Goodwill	The Company’s goodwill consists of the following: Americas EMEA APAC Total Balance as of September 30, 2020 $ 19,219 $ 10,722 $ 629 $ 30,570 Acquisitions 55,406 — 27,530 82,936 Foreign exchange — 124 (389 ) (265 ) Balance as of June 30, 2021 $ 74,625 $ 10,846 $ 27,770 $ 113,241 Balance as of September 30, 2019 $ 19,219 $ 9,971 $ 593 $ 29,783 Foreign exchange — 306 14 320 Balance as of June 30, 2020 $ 19,219 $ 10,277 $ 607 $ 30,103
Summary of Company's Intangible Assets	The Company’s intangible assets consist of the following June 30, 2021 (unaudited) Gross Accumulated Net Trademark—Weber $ 310,000 $ — $ 310,000 Trademarks—Other 55,900 (7,232 ) 48,668 Trademarks, net 365,900 (7,232 ) 358,668 Customer lists 91,993 (49,283 ) 42,710 Patents 49,428 (47,325 ) 2,103 In-process 4,500 (1,988 ) 2,512 Developed technology 87,000 (2,689 ) 84,311 Reacquired rights 14,083 (1,078 ) 13,005 Non-compete 6,300 (1,481 ) 4,819 Other intangible assets, net 253,304 (103,844 ) 149,460 Total $ 619,204 $ (111,076 ) $ 508,128 September 30,2020 Gross Carrying Accumulated Net Book Trademark—Weber $ 310,000 $ — $ 310,000 Trademarks—Other 38,900 (4,935 ) 33,965 Trademarks, net 348,900 (4,935 ) 343,965 Customer lists 91,388 (45,684 ) 45,704 Patents 49,428 (46,156 ) 3,272 Internally developed software 5,700 (5,700 ) — In-process 4,500 (1,650 ) 2,850 Non-compete 600 (560 ) 40 Other intangible assets, net 151,616 (99,750 ) 51,866 Total $ 500,516 $ (104,685 ) $ 395,831 The Company’s indefinite-lived intangible assets consist of Trademark—Weber.
Summary of the Remaining Weighted-Average Amortization Periods of the Intangible Assets	As of June 30, 2021, the remaining weighted-average amortization periods of the intangible assets subject to amortization are as follows: Weighted- Trademarks—Other 14.9 Customer lists 9.5 Patents 7.7 In-process 5.6 Developed technology 14.6 Reacquired rights 3.1 Non-compete 2.6
Summary of Amortization Expense on Intangible Assets	The Company expects to record the following amortization expense on intangible assets for each of the next five years and thereafter: Remaining period of 2021 $ 5,182 2022 20,815 2023 20,810 2024 18,745 2025 14,680 Thereafter 117,895 Total $ 198,127

Property, Equipment and Lease_2

Property, Equipment and Leasehold Improvements (Tables)	9 Months Ended
	Jun. 30, 2021
Property, Plant and Equipment [Abstract]
Summary of Property, Equipment and Leasehold Improvements, Net	Property, equipment and leasehold improvements, net consists of the following: June 30, September 30, Land $ 6,453 $ 12,530 Buildings 44,473 52,985 Computer equipment and software 72,588 66,166 Equipment 197,515 209,033 Leasehold improvements 12,617 17,264 Construction-in-progress 35,792 8,075 369,438 366,053 Accumulated depreciation (247,596 ) (257,801 ) Total $ 121,842 $ 108,252

Acquisitions (Tables)

Acquisitions (Tables)	9 Months Ended
	Jun. 30, 2021
June Acquisition [Member]
Business Acquisition [Line Items]
Summary of Preliminary Composition of the Purchase Price	The preliminary composition of the purchase price recorded for June was as follows: Cash $ 108,285 Fair value of equity interest 24,144 Settlement of existing contractual relationship 9,776 Total $ 142,205
Summary of the Preliminary Allocation of Purchase Price	The preliminary allocation of purchase price recorded for June was as follows: Cash $ 6,046 Inventory 480 Accounts receivable 85 Prepaid expenses and other current assets 617 Property and equipment 104 Intangibles 109,700 Goodwill 55,406 Accounts payable (870 ) Accrued expenses (3,954 ) Other long-term liabilities (25,409 ) Total $ 142,205
Summary of preliminary valuations and subject to final adjustment, allocated to intangible assets	Gross Trade names and trademarks $ 17,000 Developed software / patented technology 87,000 Non-competition 5,700 Total $ 109,700 Useful Trade names and trademarks 20.0 Developed software / patented technology 15.0 Non-competition 3.0 Total weighted average useful life 15.2
RMC Acquisition [Member]
Business Acquisition [Line Items]
Summary of Preliminary Composition of the Purchase Price	The preliminary composition of the purchase price recorded for RMC was as follows: Cash $ 26,275 Equity consideration issued by the Company (2,899 common units) 14,582 Total $ 40,857
Summary of the Preliminary Allocation of Purchase Price	The preliminary allocation of purchase price recorded for RMC was as follows: Property and equipment $ 432 Reacquired rights 14,300 Goodwill 27,530 Accrued expenses (1,405 ) Total $ 40,857

Debt (Tables)

Debt (Tables)	9 Months Ended
	Jun. 30, 2021
Debt Disclosure [Abstract]
Summary of Long-term Debt	Long-term debt consists of the following: June 30, September 30, Secured Credit Facility Term Loan, due October 2027 $ 1,243,750 $ — Senior Facility term loan, due December 2022 — 616,250 Total borrowings 1,243,750 616,250 Deferred financing costs (17,287 ) (4,341 ) Original issue discount (5,715 ) — Total debt 1,220,748 611,909 Less: current portion of long-term debt and other borrowings (12,500 ) (36,250 ) Total long-term debt $ 1,208,248 $ 575,659
Summary of Aggregate Maturities of Long-term Debt	Aggregate maturities of long-term debt as of June 30, 2021, are as follows: Remaining period of 2021 $ 3,125 2022 12,500 2023 12,500 2024 12,500 2025 12,500 Thereafter 1,190,625 $ 1,243,750

Derivative Instruments (Tables)

Derivative Instruments (Tables)	9 Months Ended
	Jun. 30, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Notional Amounts of Outstanding Derivative Positions	The notional values of the Company’s outstanding interest rate swap contracts were as follows: June 30, September 30, Interest rate swap contracts $ 1,220,000 $ 410,000 The notional values of the Company’s outstanding foreign currency forward contracts were as follows: June 30, (unaudited) September 30, Foreign currency forward contracts $ 25,445 $ 5,730
Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss)	For derivatives designated as cash flow hedges, the (loss) gain recognized in Other comprehensive income (loss) was: Three Months Ended June 30, Nine Months Ended June 30, 2021 2020 2021 2020 Interest rate swap contracts $ (7,059 ) $ (3,630 ) $ 11,406 $ (20,337 ) Foreign currency forward contracts — — (117 ) (57 ) Total (loss) gain recognized $ (7,059 ) $ (3,630 ) $ 11,289 $ (20,394 )
Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss)	For derivatives designated as cash flow hedges, the loss reclassified from Accumulated other comprehensive income (loss) into the condensed consolidated statements of income was: Three Months Ended June 30, Nine Months Ended June 30, 2021 2020 2021 2020 Interest rate swap contracts $ (2,669 ) $ (1,634 ) $ (7,782 ) $ (2,325 ) Foreign currency forward contracts (117 ) — (249 ) (57 ) Total (loss) gain recognized $ (2,786 ) $ (1,634 ) $ (8,031 ) $ (2,382 )
Schedule of Foreign Exchange Contracts, Statement of Financial Position	For derivatives de-designated Three Months Ended June 30, Nine Months Ended June 30, 2021 2020 2021 2020 Foreign currency forward contracts $ (141 ) $ (1,093 ) $ 776 $ 1,222
Summary of Derivative Instruments, Gain (Loss)	The Company recorded a corresponding gain on the change in fair market value as follows: Three Months Ended June 30, Nine Months Ended June 30, 2021 2020 2021 2020 Commodity index contracts $ (1,508 ) $ — $ (7,099 ) $ —

Commitments and Contingencies (

Commitments and Contingencies (Tables)	9 Months Ended
	Jun. 30, 2021
Product Warranties Disclosures [Abstract]
Schedule of Product Warranty Liability	The following is an analysis of product warranty reserves and charges against those reserves: Balance at September 30, 2020 $ 21,909 Accrual for warranties issued 8,737 Acquired June warranty reserve 759 Warranty settlements made (6,170 ) Balance at June 30, 2021 $ 25,235 Balance at September 30, 2019 $ 19,515 Accrual for warranties issued 6,172 Warranty settlements made (3,424 ) Balance at June 30, 2020 $ 22,263

Fair Value of Financial Instr_2

Fair Value of Financial Instruments (Tables)	9 Months Ended
	Jun. 30, 2021
Fair Value Disclosures [Abstract]
Summary of Fair Value of Financial Assets and Liabilities Measured on a Recurring Basis	The fair value of financial assets and liabilities measured on a recurring basis was as follows: Level 1 Level 2 Level 3 Prepaid expenses and other current assets: Foreign currency forward contracts $ 151 $ — $ 151 $ — Commodity index contracts 4,959 — 4,959 — Interest rate swap contracts 8,996 — 8,996 — Total $ 14,106 $ — $ 14,106 $ — Other long-term assets: Interest rate swap contracts $ 28,900 $ — $ 28,900 $ — Total $ 28,900 $ — $ 28,900 $ — Accrued expenses: Interest rate swap contracts $ 14,867 $ — $ 14,867 $ — Total $ 14,867 $ — $ 14,867 $ — Other long-term liabilities: Interest rate swap contracts $ 43,564 $ — $ 43,564 $ — Contingent consideration 472 — — 472 Total $ 44,036 $ — $ 43,564 $ 472 September 30, Level 1 Level 2 Level 3 Accrued expenses: Foreign currency forward contracts $ 233 $ — $ 233 $ — Commodity index contracts 73 — 73 — Interest rate swap contracts 9,324 — 9,324 — Total $ 9,630 $ — $ 9,630 $ — Other long-term liabilities: Interest rate swap contracts $ 27,296 $ — $ 27,296 $ — Commodity index contracts 28 28 Contingent consideration 700 — — 700 Total $ 28,024 $ — $ 27,324 $ 700
Summary of Changes in Fair Value of the Contingent Consideration using Level 3 Assumptions	Balance at September 30, 2020 $ 700 Royalty payments (228 ) Balance at June 30, 2021 $ 472 Balance at September 30, 2019 $ 1,610 Royalty payments (1,521 ) Fair value adjustments 730 Balance at June 30, 2020 $ 819

Profits Interest Plan (Tables)

Profits Interest Plan (Tables)	9 Months Ended
	Jun. 30, 2021
Profits Interest Plan [Abstract]
Summary of Profit Interest Units and their Corresponding Distribution Thresholds	Subsequent to the April 2021 grants and plan amendment, the profits interest units and their corresponding distribution thresholds were as follows as of June 30, 2021: Distribution Threshold Units $ 1,550,000 – 1,700,000 8,213 $ 2,000,000 – 2,200,000 8,213 $ 2,450,000 – 2,650,000 16,595 $ 2,800,000 – 2,900,000 2,350 Total 35,371
Summary of Profits Interest Units Activity	The following tables summarize the Company’s profits interest units activity: Units Outstanding Balance as of September 30, 2020 24,638 Units granted 10,733 Units exercised — Units forfeited or canceled — Balance at June 30, 2021 35,371 Units Balance as of September 30, 2020 — Units vested 5,545 Units exercised — Units forfeited or canceled — Balance at June 30, 2021 5,545
Summary of Weighted Average Assumptions Used to Estimate the Fair Value of the Profits Interest Units which are outstanding	The weighted-average assumptions used to estimate the fair value of the profits interest units, which were outstanding as of June 30, 2021 are as follows: Fair value per unit $ 3,853 Expected term (in years) 1.53 Risk-free interest rate 0.07-0.67 % Expected volatility 37.4 % Expected dividend yield — %

Segments (Tables)

Segments (Tables)	9 Months Ended
	Jun. 30, 2021
Segment Reporting [Abstract]
Summary of Key Financial Performance Measures by Reportable Segment	The information below summarizes key financial performance measures by reportable segment: Three Months Ended June 30, 2021 Americas EMEA APAC Corporate/Other Total Net sales $ 339,441 $ 306,668 $ 22,758 $ — $ 668,867 Adjusted income from operations (1) $ 61,206 $ 108,380 $ 1,989 $ (69,996 ) $ 101,579 Depreciation and amortization $ 2,331 $ 417 $ 1,527 $ 7,804 $ 12,079 Capital expenditures $ 26 $ 8,836 $ 503 $ 13,784 $ 23,149 Three Months Ended June 30, 2020 Americas EMEA APAC Corporate/Other Total Net sales $ 315,053 $ 227,552 $ 18,188 $ — $ 560,793 Adjusted income from operations (1) $ 70,153 $ 79,447 $ 3,490 $ (52,750 ) $ 100,340 Depreciation and amortization $ 169 $ 453 $ 280 $ 9,552 $ 10,454 Capital expenditures $ — $ 73 $ 119 $ 4,254 $ 4,446 Nine Months Ended June 30, 2021 Americas EMEA APAC Corporate/Other Total Net sales $ 891,649 $ 617,995 $ 122,532 $ — $ 1,632,176 Adjusted income from operations (1) $ 178,246 $ 206,516 $ 28,963 $ (163,976 ) $ 249,749 Depreciation and amortization $ 4,474 $ 1,287 $ 2,254 $ 24,392 $ 32,407 Capital expenditures $ 183 $ 11,956 $ 1,162 $ 27,202 $ 40,503 Nine Months Ended June 30, 2020 Americas EMEA APAC Corporate/Other Total Net sales $ 649,913 $ 434,755 $ 72,501 $ — $ 1,157,169 Adjusted income from operations (1) $ 139,082 $ 125,187 $ 15,778 $ (128,462 ) $ 151,585 Depreciation and amortization $ 521 $ 1,534 $ 821 $ 29,050 $ 31,926 Capital expenditures $ 39 $ 5,797 $ 655 $ 16,218 $ 22,709 (1) Adjusted income from operations for each reportable segment includes cost of goods sold transfer price allocations and distribution allocations from Corporate/Other. Corporate/Other includes unallocated corporate and certain supply chain expenses, inter-segment eliminations and other adjustments, including business and operational transformation costs, debt refinancing and IPO costs and COVID-19
Summary of Reconciliation of Adjusted Income From Operations to Income Before Taxes	The information below provides a reconciliation of adjusted income from operations to income before taxes: Three Months Ended Nine Months Ended 2021 2020 2021 2020 Segment adjusted income from operations Americas $ 61,206 $ 70,153 $ 178,246 $ 139,082 EMEA 108,380 79,447 206,516 125,187 APAC 1,989 3,490 28,963 15,778 Segment adjusted income from operations for reportable segments 171,575 153,090 413,725 280,047 Unallocated net expenses (69,996 ) (52,750 ) (163,976 ) (128,462 ) Adjustments to income before taxes Non-cash (61,714 ) (975 ) (94,193 ) (1,867 ) Gain on disposal of assets held for sale — — 5,185 — Interest income 252 311 677 1,012 Interest expense (18,283 ) (10,895 ) (50,457 ) (32,006 ) Loss from early extinguishment of debt — — (5,448 ) — Income before taxes $ 21,834 $ 88,781 $ 105,513 $ 118,724
Summary of Reconcilaition of Segment Assets to Total Consolidated Assets	The information below provides a reconciliation of segment assets to total consolidated assets: June 30, 2021 Americas EMEA APAC Corporate/Other Total Segment assets (1) $ 179,579 $ 112,414 $ 41,942 $ — $ 333,935 All other (2) 1,364,222 Total assets $ 1,698,157 September 30, 2020 Americas EMEA APAC Corporate/Other Total Segment assets (1) $ 120,351 $ 77,477 $ 35,499 $ — $ 233,327 All other (2) 906,108 Total assets $ 1,139,435 (1) Inventory is the only segment asset reviewed by the CODM. (2) “All other” consists of assets that are not reviewed by the CODM at a segment level: cash and cash equivalents; accounts receivable; prepaid expenses and other current assets; property, equipment and leasehold improvements, net; operating lease right-of-use

Income Per Unit (Tables)

Income Per Unit (Tables)	9 Months Ended
	Jun. 30, 2021
Earnings Per Unit [Abstract]
Summary of Net Income Per Unit	The computation of net income per common unit is as follows: Three Months Ended June 30, Nine Months Ended June 30, (in thousands, except unit and per unit data) 2021 2020 2021 2020 Net income $ 17,825 $ 79,455 $ 91,620 $ 103,062 Less: Net earnings allocated to participating securities (129 ) (721 ) (730 ) (1,006 ) Net income attributable to common members $ 17,696 $ 78,734 $ 90,890 $ 102,056 Units used in computation: Basic and diluted weighted-average common units outstanding (1) 538,777 551,774 547,515 551,760 Basic and diluted net income per common unit $ 32.84 $ 142.69 $ 166.00 $ 184.97 (1) Amount excludes 2,443 and 2,263 Weber common units issued in exchange for partial-recourse notes in both the three and nine months ended June 30, 2021 and 2020, respectively. See Note 16 for further information.

Basis of Presentation and Sig_4

Basis of Presentation and Significant Accounting Policies - Summary of Company's Allowances (Detail) - USD ($) $ in Thousands	9 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Allowance for Credit Loss [Abstract]
Beginning balance	$ 3,262	$ 2,858
Charges (credits) to the provision, net	325	863
Accounts written off, net of recoveries	(1,096)	(160)
Ending balance	$ 2,491	$ 3,561

Basis of Presentation and Sig_5

Basis of Presentation and Significant Accounting Policies - Summary of Components of Inventory (Detail) - USD ($) $ in Thousands	Jun. 30, 2021	Sep. 30, 2020
Inventory, Combining Work in Process and Raw Materials Alternative, Gross [Abstract]
Work-in-process and materials	$ 48,041	$ 33,343
Finished products	285,894	199,984
Total Inventories, net	$ 333,935	$ 233,327

Basis of Presentation and Sig_6

Basis of Presentation and Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Thousands		Dec. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Sep. 30, 2020
Accounting Policies [Line Items]
Selling, general and administrative expense	[1],[2]		$ 257,758	$ 130,333	$ 555,744	$ 305,051
Gain on disposition of assets					5,185
Deferred costs			25,813		25,813		$ 7,422
Amortization of deferred charges			955	856	2,813	2,079
Unrecognized tax benefits, income tax penalties and interest expense			0	0	0	0
Advertising expense			49,421	26,596	84,921	46,991
Share-based payment arrangement, expense			44,207		67,296
Manufacturing Site [Member]
Accounting Policies [Line Items]
Property, plant and equipment, net							8,297
Proceeds from sale of property, plant, and equipment		$ 13,540
Gain on disposition of assets		$ 5,185
Selling, General and Administrative Expenses [Member]
Accounting Policies [Line Items]
Research and development expense			18,421	4,659	28,619	11,967
Prepaid Expenses and Other Current Assets [Member]
Accounting Policies [Line Items]
Deferred offering costs			4,037		4,037		$ 0
Shipping and Handling [Member]
Accounting Policies [Line Items]
Selling, general and administrative expense			$ 52,883	$ 38,352	$ 126,783	$ 84,724
[1]	Includes related party rental expense of $68 and $59 for the three months ended June 30, 2021 and 2020, respectively, and $196 and $176 for the nine months ended June 30, 2021 and 2020, respectively (see Note 10).
[2]	Includes related party royalty expense of $0 and $471 for the three months ended June 30, 2021 and 2020, respectively, and $268 and $1,574 for the nine months ended June 30, 2021 and 2020, respectively (see Note 10).

Common Stock - Additional Infor

Common Stock - Additional Information (Detail) - WEBER INC [Member]	Jun. 30, 2021$ / sharesshares
Class of Stock [Line Items]
Common stock par or stated value per share | $ / shares	$ 0.01
Common stock shares authorized | shares	1,000

Goodwill and Other Intangible_2

Goodwill and Other Intangibles - Summary of Company's Goodwill (Detail) - USD ($) $ in Thousands	9 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Goodwill [Line Items]
Beginning Balance	$ 30,570	$ 29,783
Acquisitions	82,936
Foreign exchange	(265)	320
Ending Balance	113,241	30,103
Americas [Member]
Goodwill [Line Items]
Beginning Balance	19,219	19,219
Acquisitions	55,406
Ending Balance	74,625	19,219
EMEA [Member]
Goodwill [Line Items]
Beginning Balance	10,722	9,971
Foreign exchange	124	306
Ending Balance	10,846	10,277
APAC [Member]
Goodwill [Line Items]
Beginning Balance	629	593
Acquisitions	27,530
Foreign exchange	(389)	14
Ending Balance	$ 27,770	$ 607

Goodwill and Other Intangible_3

Goodwill and Other Intangibles - Summary of Company's Intangible Assets (Detail) - USD ($) $ in Thousands	Jun. 30, 2021	Sep. 30, 2020
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 619,204	$ 500,516
Accumulated Amortization	(111,076)	(104,685)
Net Book Value	508,128	395,831
Trademarks—Other [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	55,900	38,900
Accumulated Amortization	(7,232)	(4,935)
Net Book Value	48,668	33,965
Trademarks, Net [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	365,900	348,900
Accumulated Amortization	(7,232)	(4,935)
Net Book Value	358,668	343,965
Customer Lists [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	91,993	91,388
Accumulated Amortization	(49,283)	(45,684)
Net Book Value	42,710	45,704
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	49,428	49,428
Accumulated Amortization	(47,325)	(46,156)
Net Book Value	2,103	3,272
In-Process Research and Development [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	4,500	4,500
Accumulated Amortization	(1,988)	(1,650)
Net Book Value	2,512	2,850
Developed Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	87,000	5,700
Accumulated Amortization	(2,689)	(5,700)
Net Book Value	84,311
Reacquired Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	14,083
Accumulated Amortization	(1,078)
Net Book Value	13,005
Non-Compete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	6,300	600
Accumulated Amortization	(1,481)	(560)
Net Book Value	4,819	40
Other Intangible Assets, Net [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	253,304	151,616
Accumulated Amortization	(103,844)	(99,750)
Net Book Value	149,460	51,866
Trademark—Weber [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	310,000	310,000
Accumulated Amortization	0	0
Net Book Value	$ 310,000	$ 310,000

Goodwill and Other Intangible_4

Goodwill and Other Intangibles - Summary of the Remaining Weighted-Average Amortization Periods of the Intangible Assets (Detail)	9 Months Ended
	Jun. 30, 2021
Trademarks—Other [Member]
Schedule of Finite Lived Intangible Assets Amortization Period [Line Items]
Weighted-Average Years	14 years 10 months 24 days
Customer Lists [Member]
Schedule of Finite Lived Intangible Assets Amortization Period [Line Items]
Weighted-Average Years	9 years 6 months
Patents [Member]
Schedule of Finite Lived Intangible Assets Amortization Period [Line Items]
Weighted-Average Years	7 years 8 months 12 days
In-process research and development
Schedule of Finite Lived Intangible Assets Amortization Period [Line Items]
Weighted-Average Years	5 years 7 months 6 days
Developed Technology [Member]
Schedule of Finite Lived Intangible Assets Amortization Period [Line Items]
Weighted-Average Years	14 years 7 months 6 days
Reacquired Rights [Member]
Schedule of Finite Lived Intangible Assets Amortization Period [Line Items]
Weighted-Average Years	3 years 1 month 6 days
Non-Compete Agreements [Member]
Schedule of Finite Lived Intangible Assets Amortization Period [Line Items]
Weighted-Average Years	2 years 7 months 6 days

Goodwill and Other Intangible_5

Goodwill and Other Intangibles - Summary of Amortization Expense on Intangible Assets (Detail) $ in Thousands	Jun. 30, 2021USD ($)
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Remaining period of 2021	$ 5,182
2022	20,815
2023	20,810
2024	18,745
2025	14,680
Thereafter	117,895
Total	$ 198,127

Goodwill and Other Intangible_6

Goodwill and Other Intangibles - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization of intangible assets	$ 5,226	$ 3,190	$ 12,090	$ 10,045

Property, Equipment and Lease_3

Property, Equipment and Leasehold Improvements - Summary of Property, Equipment and Leasehold Improvements, Net (Detail) - USD ($) $ in Thousands	Jun. 30, 2021	Sep. 30, 2020
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 369,438	$ 366,053
Accumulated depreciation	(247,596)	(257,801)
Total	121,842	108,252
Land [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	6,453	12,530
Buildings [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	44,473	52,985
Computer Equipment and Software [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	72,588	66,166
Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	197,515	209,033
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	12,617	17,264
Construction-in-progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 35,792	$ 8,075

Property, Equipment and Lease_4

Property, Equipment and Leasehold Improvements - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Property, Plant and Equipment [Abstract]
Depreciation	$ 6,853	$ 7,264	$ 20,317	$ 21,881

Acquisitions - Summary of Preli

Acquisitions - Summary of Preliminary Composition of the Purchase Price (Detail) - USD ($) $ in Thousands	Jan. 12, 2021	Jun. 30, 2021
June Acquisition [Member]
Schedule of Business Combination Consideration Transferred [Line Items]
Cash		$ 108,285
Fair value of equity interest	$ 24,144	24,144
Settlement of existing contractual relationship		9,776
Total		142,205
RMC Acquisition [Member]
Schedule of Business Combination Consideration Transferred [Line Items]
Cash		26,275
Equity consideration issued by the Company (2,899 common units)		14,582
Total		$ 40,857

Acquisitions - Summary of Prel

Acquisitions - Summary of Preliminary Composition of the Purchase Price (Parenthetical) (Detail)	9 Months Ended
	Jun. 30, 2021shares
RMC Acquisition [Member]
Business Acquisition [Line Items]
Number of shares of equity interests issued	2,899

Acquisitions - Summary of the P

Acquisitions - Summary of the Preliminary Allocation of Purchase Price (Detail) - USD ($) $ in Thousands	Jun. 30, 2021	Sep. 30, 2020	Jun. 30, 2020	Sep. 30, 2019
Business Acquisition [Line Items]
Goodwill	$ 113,241	$ 30,570	$ 30,103	$ 29,783
June Acquisition [Member]
Business Acquisition [Line Items]
Cash	6,046
Inventory	480
Accounts receivable	85
Prepaid expenses and other current assets	617
Property and equipment	104
Intangibles	109,700
Goodwill	55,406
Accounts payable	(870)
Accrued expenses	(3,954)
Other long-term liabilities	(25,409)
Total	142,205
RMC Acquisition [Member]
Business Acquisition [Line Items]
Property and equipment	432
Intangibles	14,300
Goodwill	27,530
Accrued expenses	(1,405)
Total	$ 40,857

Acquisitions - Summary of pre_2

Acquisitions - Summary of preliminary valuations and subject to final adjustment, allocated to intangible assets (Detail) - USD ($) $ in Thousands	9 Months Ended
	Jun. 30, 2021	Sep. 30, 2020
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 619,204	$ 500,516
June Acquisition [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 109,700
Useful Lives	15 years 2 months 12 days
Trade names and trademarks [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 365,900	348,900
Trade names and trademarks [Member] | June Acquisition [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 17,000
Useful Lives	20 years
Developed software / patented technology [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 87,000	5,700
Developed software / patented technology [Member] | June Acquisition [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 87,000
Useful Lives	15 years
Non-competition / restrictive covenant agreements [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 6,300	$ 600
Non-competition / restrictive covenant agreements [Member] | June Acquisition [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 5,700
Useful Lives	3 years

Acquisitions - Additional Infor

Acquisitions - Additional Information (Detail) - USD ($) $ in Thousands	Apr. 01, 2021	Jan. 12, 2021	Jun. 30, 2021	Sep. 30, 2020	Jun. 30, 2020	Sep. 30, 2019
Business Acquisition [Line Items]
Goodwill			$ 113,241	$ 30,570	$ 30,103	$ 29,783
June Acquisition [Member]
Business Acquisition [Line Items]
Business Combination, Step Acquisition, Equity Interest in Acquiree, Fair Value		$ 24,144	24,144
Goodwill			$ 55,406
Goodwill, Period Increase (Decrease)		9,776
Deferred tax liabilities		25,409
Finite-Lived Intangible Asset, Useful Life			15 years 2 months 12 days
June Acquisition [Member] | Selling, General and Administrative Expenses [Member]
Business Acquisition [Line Items]
Business Combination, Acquisition Related Costs		$ 1,187
RMC Acquisition [Member]
Business Acquisition [Line Items]
Goodwill			$ 27,530
Goodwill, Period Increase (Decrease)	$ 27,530
RMC Acquisition [Member] | Selling, General and Administrative Expenses [Member]
Business Acquisition [Line Items]
Business Combination, Acquisition Related Costs	$ 325
RMC Acquisition [Member] | Contractual Rights [Member]
Business Acquisition [Line Items]
Finite-Lived Intangible Asset, Useful Life	3 years 3 months 18 days

Investments - Additional Inform

Investments - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Sep. 30, 2019	Sep. 30, 2020
Schedule of Equity Method Investments [Line Items]
Prepaid Royalties	$ 0		$ 0			$ 10,044
Royalty Expense	0	$ 471	268	$ 1,574
Loss (gain) from investments in unconsolidated affiliates	$ 0	$ (778)	5,505	$ (3,556)
Equity Method Investment, Realized Gain (Loss) on Disposal			6,910
Loss Gain From Investments In Unconsolidated Affiliates [Member]
Schedule of Equity Method Investments [Line Items]
Loss (gain) from investments in unconsolidated affiliates			$ 1,405
Preferred Stock Investment [Member] | Other Long Term Assets [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investments						$ 18,639
June Acquisition [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage					20.00%
June Acquisition [Member] | Junes Preferred Stock [Member]
Schedule of Equity Method Investments [Line Items]
Stock acquired during period value purchase assets					$ 23,000
June Acquisition [Member] | Junes Common Stock [Member]
Schedule of Equity Method Investments [Line Items]
Stock acquired during period value purchase assets					$ 1,269
June Acquisition [Member] | Common Stock [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage					6.00%

Debt - Summary of Long-term Deb

Debt - Summary of Long-term Debt (Detail) - USD ($) $ in Thousands	Jun. 30, 2021	Sep. 30, 2020
Debt Instrument [Line Items]
Long-term debt	$ 1,243,750
Total debt	1,243,750
Less: current portion of long-term debt and other borrowings	(12,500)	$ (36,250)
Total long-term debt	1,208,248	575,659
Long-term Debt [Member]
Debt Instrument [Line Items]
Long-term debt	1,220,748	611,909
Total borrowings	1,243,750	616,250
Deferred financing costs	(17,287)	(4,341)
Original issue discount	(5,715)	0
Total debt	1,220,748	611,909
Less: current portion of long-term debt and other borrowings	(12,500)	(36,250)
Total long-term debt	1,208,248	575,659
Secured Credit Facility Term Loan, due October 2027 [Member] | Long-term Debt [Member]
Debt Instrument [Line Items]
Long-term debt	1,243,750	0
Total debt	1,243,750	0
Senior Facility term loan, due December 2022 [Member] | Long-term Debt [Member]
Debt Instrument [Line Items]
Long-term debt	0	616,250
Total debt	$ 0	$ 616,250

Debt - Summary of Aggregate Mat

Debt - Summary of Aggregate Maturities of Long-term Debt (Detail) $ in Thousands	Jun. 30, 2021USD ($)
Maturities of Long-term Debt [Abstract]
Remaining period of 2021	$ 3,125
2022	12,500
2023	12,500
2024	12,500
2025	12,500
Thereafter	1,190,625
Total debt	$ 1,243,750

Debt - Additional Information (

Debt - Additional Information (Detail) - USD ($) $ in Thousands	Oct. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Debt Instrument [Line Items]
Payments of financing costs		$ 26,654
Gain (loss) on extinguishment of debt		5,448
Long-term debt		1,243,750
Repayments of Long-term Debt		622,500	$ 36,250
Term Loan [Member]
Debt Instrument [Line Items]
Payments of financing costs		25,154
Debt instrument, unamortized discount	$ 6,250
Line of Credit Facility, Interest Rate Description	(i) London Interbank Offered Rate (“LIBOR”) for the relevant interest period, adjusted for statutory reserve requirements (subject to a floor of 0.75%), plus an applicable margin or (ii) a base rate equal to the highest of (a) the rate of interest publicly announced from time to time by the administrative agent as its “prime rate”, (b) the federal funds effective rate plus 0.50% and (c) adjusted LIBOR for an interest period of one month plus 1.00% (subject to a floor of 0.00% per annum), in each case, plus an applicable margin. As of June 30, 2021, the interest rate on the Term Loan was LIBOR plus 3.25%. Interest is payable on the last business day of the month for the relevant interest period selected.
Revolving Loan [Member]
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	$ 300,000
Payments of financing costs		1,500
Line of credit facility, expiration date	Oct. 30, 2025
Line of credit facility, remaining borrowing capacity		$ 293,614
Line of Credit Facility, Interest Rate Description		(i) LIBOR for the relevant interest period, adjusted for statutory reserve requirements (subject to a floor of 0.00% per annum), plus an applicable margin or (ii) a base rate equal to the highest of (a) the rate of interest publicly announced from time to time by the administrative agent as its “prime rate”, (b) the federal funds effective rate plus 0.50% and (c) adjusted LIBOR for an interest period of one month plus 1.00% (subject to a floor of 0.00% per annum), in each case, plus an applicable margin. The applicable margin can fluctuate based on the average leverage ratio, as defined in the Secured Credit Facility. Interest is payable in March, June, September and December during the term of the agreement on the last business day of the calendar quarter. There were no outstanding borrowings on the Revolving Loan as of June 30, 2021.
Line of Credit Facility, Commitment Fee Percentage		0.30%
Letters of Credit Outstanding, Amount		$ 0
Secured Credit Facility [Member]
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	$ 300,000
Long-term debt	1,250,000
Senior Facility Term Loan [Member]
Debt Instrument [Line Items]
Gain (loss) on extinguishment of debt	4,173
Repayments of Long-term Debt	616,250
Senior Facility Revolving Loan [Member]
Debt Instrument [Line Items]
Gain (loss) on extinguishment of debt	1,275
Senior Facility [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Interest Rate Description		(i) LIBOR for the relevant currency borrowed, plus an applicable margin; or (ii) a base determined by reference to the highest of: (a) the prime rate, (b) the federal funds effective rate plus 0.5%, or (c) the LIBOR applicable for an interest period of one month plus 1.0%, plus an applicable margin. As of September 30, 2020, the interest rate on the term loan under the Senior Facility was LIBOR plus 2.25%. There were no outstanding borrowings on the revolving line of credit as of September 30, 2020.
Standby Letters of Credit [Member] | Revolving Loan [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Commitment Fee Amount	30,000
Swing Line Loans [Member] | Revolving Loan [Member]
Debt Instrument [Line Items]
Long-term line of credit	$ 25,000
Letter of Credit [Member] | Revolving Loan [Member]
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount		$ 6,386

Derivative Instruments - Summar

Derivative Instruments - Summary of Company's Outstanding Interest Rate Swap Contracts (Detail) - USD ($)	Jun. 30, 2021	Sep. 30, 2020
Interest Rate Swap [Member]
Derivative [Line Items]
Derivative, notional amount	$ 1,220,000	$ 410,000

Derivative Instruments - Summ_2

Derivative Instruments - Summary of Foreign Currency Forward Contracts (Detail) - USD ($) $ in Thousands	Jun. 30, 2021	Sep. 30, 2020
Foreign Exchange Forward [Member]
Derivative [Line Items]
Derivative, notional amount	$ 25,445	$ 5,730

Derivative Instruments - Summ_3

Derivative Instruments - Summary of the (Loss) Gain Recognized in Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Other comprehensive income (loss), cash flow hedge, gain (loss), after reclassification and tax	$ (7,059)	$ (3,630)	$ 11,289	$ (20,394)
Cash Flow Hedging [Member] | Interest Rate Swap [Member] | Designated as Hedging Instrument [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Other comprehensive income (loss), cash flow hedge, gain (loss), after reclassification and tax	$ (7,059)	$ (3,630)	11,406	(20,337)
Cash Flow Hedging [Member] | Foreign Exchange Forward [Member] | Designated as Hedging Instrument [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Other comprehensive income (loss), cash flow hedge, gain (loss), after reclassification and tax			$ (117)	$ (57)

Derivative Instruments - Summ_4

Derivative Instruments - Summary of Cash Flow Hedges (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative instruments, gain (loss) reclassified from accumulated OCI into income, effective portion, net	$ (2,786)	$ (1,634)	$ (8,031)	$ (2,382)
Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative instruments, gain (loss) reclassified from accumulated OCI into income, effective portion, net	(2,669)	(1,634)	(7,782)	(2,325)
Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Foreign Exchange Forward [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative instruments, gain (loss) reclassified from accumulated OCI into income, effective portion, net	$ (117)	$ 0	$ (249)	$ (57)

Derivative Instruments - Summ_5

Derivative Instruments - Summary of Foreign Currency (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Foreign Currency Gain (Loss) [Member] | Foreign Exchange Forward [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on foreign currency derivatives recorded in earnings, net	$ (141)	$ (1,093)	$ 776	$ 1,222

Derivative Instruments - Summ_6

Derivative Instruments - Summary of Derivative Instruments (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Commodity Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, gain on derivative	$ (1,508)		$ (7,099)

Derivative Instruments - Addit

Derivative Instruments - Additional Information (Detail) - USD ($)	Oct. 30, 2020	Jun. 30, 2021	Sep. 30, 2020
Unrealized gain loss on interest rate cash flow hedges, pretax, accumulated other comprehensive income loss	$ 38,249
Derivative, Floor interest rate	0.75%
Derivative, Cost of hedge net of cash received	$ 0
Derivative instruments estimated gain loss net		$ 10,662
Interest Rate Swap [Member]
Derivative, Term of Contract	3 years
Derivative, notional amount		$ 1,220,000	$ 410,000
Hybrid Instrument [Member] | Interest Rate Swap [Member]
Derivative, notional amount	$ 500,000
Derivative, basis spread description	one-month LIBOR
Derivative, frequency of settlement terms	monthly basis
Derivative, Fixed interest rate	2.2025%
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Interest Rate Swap [Member]
Derivative, notional amount	$ 360,000
Not Designated as Hedging Instrument, Economic Hedge [Member] | Interest Rate Swap [Member]
Derivative, notional amount	360,000
Not Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]
Derivative, notional amount	$ 360,000

Income Taxes - Additional infor

Income Taxes - Additional information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Income Tax Disclosure [Abstract]
Income tax expense benefit	$ 4,009	$ 8,548	$ 19,398	$ 12,106
Income loss from continuing operations before Equity method investments, Income taxes, Noncontrolling interest	$ 21,834	$ 88,781	$ 105,513	$ 118,724
Effective income tax rate reconciliation, Percent rate	18.40%	9.60%	18.40%	10.20%
Effective income tax rate reconciliation,at Federal statutory income tax rate, Percent	21.00%	21.00%
Effective income tax rate reconciliation, Change in deferred tax assets valuation allowance, Amount	$ 1,334		$ 2,449

Commitments and Contingencies -

Commitments and Contingencies - Schedule of product warranty reserves and charges (Detail) - USD ($) $ in Thousands	9 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Product Warranties Disclosures [Abstract]
Balance at September	$ 21,909	$ 19,515
Accrual for warranties issued	8,737	6,172
Acquired June warranty reserve	759
Warranty settlements made	(6,170)	(3,424)
Balance at June	$ 25,235	$ 22,263

Commitments and Contingencies_2

Commitments and Contingencies - Additional Information (Detail) - USD ($)	3 Months Ended	9 Months Ended
	Jun. 30, 2021	Jun. 30, 2021	Jun. 30, 2020	Sep. 30, 2020
Contingent consideration payments		$ 228,000	$ 1,521,000
Business combination, Contingent consideration, Liability	$ 472,000	$ 472,000		$ 700,000
Operating lease, Term of contract	15 years	15 years
Operating lease, Option to extend	five
Operating leases, Future minimum payments due, Next twelve months	$ 2,424	$ 2,424
Operating leases, Future minimum payments due increase, Percentage	1.25%	1.25%
iDevices LLC [Member]
Business combination,Contingent consideration arrangements, Range of outcomes, Value, High	$ 15,000,000	$ 15,000,000
iDevices LLC [Member] | EarnOut And Development Agreement [Member]
Business combination, Contingent consideration arrangements, Range of outcomes, Value, Low	$ 8,000,000	8,000,000
Business Combination Contingent Consideration Arrangements Range Of Outcomes Term High	10 years
Other Noncurrent Liabilities [Member]
Product warranty accrual, Noncurrent	$ 20,384,000	20,384,000		17,995,000
Accounts Payable and Accrued Liabilities [Member]
Product warranty accrual, Current	$ 4,851,000	$ 4,851,000		$ 3,914,000

Related Parties - Additional In

Related Parties - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Sep. 30, 2020
Operating lease liability, current	$ 1,105		$ 1,105		$ 0
Prepaid royalties	0		0		10,044
Notes receivable, related parties	11,221		11,221		9,284
Interest income, related party	11	$ 14	40	$ 42
Operating lease, asset	3,475		3,475		4,111
Operating lease liability, noncurrent	2,299		2,299		4,139
Royalty receivables	75		75		220
Related party, royalty expense	0	471	268	1,574
Royalty [Member]
Revenue from related parties	128	34	75	316
Royalty receivables	75		75		220
Rental Expense
Operating leases, rent expense	281	238	801	714
Discount Granted As Concession | Royalty [Member]
Revenue from related parties			110
June
Prepaid royalties	0		0		10,044
Related party, royalty expense	0	471	268	1,574
Member Notes
Notes receivable, related parties	11,221		11,221		$ 9,284
Interest income, related party	$ 11	$ 14	$ 40	$ 42

Fair Value of Financial Instr_3

Fair Value of Financial Instruments - Summary of Fair Value of Financial Assets and Liabilities Measured on a Recurring Basis (Detail) - Fair Value, Recurring [Member] - USD ($) $ in Thousands	Jun. 30, 2021	Sep. 30, 2020
Prepaid expenses and other current assets:
Prepaid expenses and other current assets,Fair value	$ 14,106
Other long-term assets:
Other long term assets,Fair Value	28,900
Accrued expenses:
Accrued expenses,Fair Value	14,867	$ 9,630
Other long-term liabilities:
Other long term liabilities,Fair Value	44,036	28,024
Level 2 [Member]
Prepaid expenses and other current assets:
Prepaid expenses and other current assets,Fair value	14,106
Other long-term assets:
Other long term assets,Fair Value	28,900
Accrued expenses:
Accrued expenses,Fair Value	14,867	9,630
Other long-term liabilities:
Other long term liabilities,Fair Value	43,564	27,324
Level 3 [Member]
Other long-term liabilities:
Other long term liabilities,Fair Value	472	700
Foreign Exchange Forward [Member]
Prepaid expenses and other current assets:
Prepaid expenses and other current assets,Fair value	151
Accrued expenses:
Accrued expenses,Fair Value		233
Foreign Exchange Forward [Member] | Level 2 [Member]
Prepaid expenses and other current assets:
Prepaid expenses and other current assets,Fair value	151
Accrued expenses:
Accrued expenses,Fair Value		233
Commodity Index Contracts [Member]
Prepaid expenses and other current assets:
Prepaid expenses and other current assets,Fair value	4,959
Accrued expenses:
Accrued expenses,Fair Value		73
Other long-term liabilities:
Other long term liabilities,Fair Value		28
Commodity Index Contracts [Member] | Level 2 [Member]
Prepaid expenses and other current assets:
Prepaid expenses and other current assets,Fair value	4,959
Accrued expenses:
Accrued expenses,Fair Value		73
Other long-term liabilities:
Other long term liabilities,Fair Value		28
Interest Rate Swap [Member]
Prepaid expenses and other current assets:
Prepaid expenses and other current assets,Fair value	8,996
Other long-term assets:
Other long term assets,Fair Value	28,900
Accrued expenses:
Accrued expenses,Fair Value	14,867	9,324
Other long-term liabilities:
Other long term liabilities,Fair Value	43,564	27,296
Interest Rate Swap [Member] | Level 2 [Member]
Prepaid expenses and other current assets:
Prepaid expenses and other current assets,Fair value	8,996
Other long-term assets:
Other long term assets,Fair Value	28,900
Accrued expenses:
Accrued expenses,Fair Value	14,867	9,324
Other long-term liabilities:
Other long term liabilities,Fair Value	43,564	27,296
Contingent Consideration [Member]
Other long-term liabilities:
Other long term liabilities,Fair Value	472	700
Contingent Consideration [Member] | Level 3 [Member]
Other long-term liabilities:
Other long term liabilities,Fair Value	$ 472	$ 700

Fair Value of Financial Instr_4

Fair Value of Financial Instruments - Summary of Changes in Fair Value of the Contingent Consideration using Level 3 Assumptions (Detail) - Contingent Consideration [Member] - Level 3 [Member] - USD ($) $ in Thousands	9 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	$ 700	$ 1,610
Royalty payments	(228)	(1,521)
Fair value adjustments		730
Ending Balance	$ 472	$ 819

Management Incentive Compensa_2

Management Incentive Compensation Plan - Additional Information (Detail) - Management Incentive Compensation Plan [Member] - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Sep. 30, 2020
Management Incentive Compensation Plan [Line Items]
Incentive compensation paid out			$ 2,928	$ 1,015
Cash payments as a result of general distribution	$ 313	$ 0	313	0
Actual forfeitures amount	244	0	244	0
Incentive compensation plan expense	3,408	$ 975	5,422	$ 1,725
Total liability related to plan	9,202		9,202		$ 7,021
Current portion of incentive liability	216		216		$ 2,851
Compensation cost not yet recognised on unvested awards	$ 7,902		$ 7,902
Weighted average remaining recognition period			1 year 10 months 6 days

Profits Interest Plan - Additio

Profits Interest Plan - Additional Information (Detail) - USD ($)	3 Months Ended	9 Months Ended	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2021	Sep. 30, 2020
Profits Interest Plan [Line Items]
Compensation expense	$ 44,207,000	$ 67,296,000
Profits Interest Plan [Member]
Profits Interest Plan [Line Items]
Weighted average distribution threshold outstanding per unit	$ 3,902	$ 3,902
Fair value of vested units	$ 15,873,000	$ 15,873,000	$ 0
Total fair value of outstanding units	136,270,000	136,270,000	0
Total unrecognised compensation cost	52,440,000	$ 52,440,000
Remaining unrecognised compensation cost is expected to be recognised over a weighted average period		1 year 7 months 6 days
Profits Interest Plan [Member] | Selling, General and Administrative Expenses [Member]
Profits Interest Plan [Line Items]
Compensation expense		$ 53,795,000	83,830,000
Profits Interest Plan [Member] | Profits Interest Units [Member]
Profits Interest Plan [Line Items]
Aggregate intrinsic value of units outstanding	45,390,000	$ 45,390,000	0
Profits Interest Plan [Member] | Profits Interest Units [Member] | Minimum [Member]
Profits Interest Plan [Line Items]
Vesting period		1 year
Units vesting,requisite service period of employee		1 year
Profits Interest Plan [Member] | Profits Interest Units [Member] | Maximum [Member]
Profits Interest Plan [Line Items]
Vesting period		5 years
Units vesting,requisite service period of employee		5 years
Profits Interest Plan [Member] | Profits Interest Units [Member] | Distribution Threshold One For One Third Of Profit Interest Units [Member]
Profits Interest Plan [Line Items]
Distribution Threshold	2,000,000	$ 2,000,000
Profits Interest Plan [Member] | Profits Interest Units [Member] | Distribution Threshold Two For One Third Of Profit Interest Units [Member]
Profits Interest Plan [Line Items]
Distribution Threshold	2,500,000	2,500,000
Profits Interest Plan [Member] | Profits Interest Units [Member] | Distribution Threshold Three For One Third Of Profit Interest Units [Member]
Profits Interest Plan [Line Items]
Distribution Threshold	3,000,000	3,000,000
Profits Interest Plan [Member] | Vested Units [Member]
Profits Interest Plan [Line Items]
Aggregate intrinsic value of units outstanding	$ 7,638,000	$ 7,638,000	$ 0

Profits Interest Plan - Schedul

Profits Interest Plan - Schedule of Profit Interest Units and their Corresponding Distribution Thresholds (Detail) - Profits Interest Units [Member]	9 Months Ended
	Jun. 30, 2021USD ($)shares
Profits Interest Plan [Member]
Distribution Policy Members Or Limited Partners [Line Items]
Units Outstanding | shares	35,371
Distribution Threshold One [Member] | Maximum [Member]
Distribution Policy Members Or Limited Partners [Line Items]
Distribution Threshold	$ 1,700,000
Distribution Threshold One [Member] | Minimum [Member]
Distribution Policy Members Or Limited Partners [Line Items]
Distribution Threshold	$ 1,550,000
Distribution Threshold One [Member] | Profits Interest Plan [Member]
Distribution Policy Members Or Limited Partners [Line Items]
Units Outstanding | shares	8,213
Distribution Threshold Two [Member] | Maximum [Member]
Distribution Policy Members Or Limited Partners [Line Items]
Distribution Threshold	$ 2,200,000
Distribution Threshold Two [Member] | Minimum [Member]
Distribution Policy Members Or Limited Partners [Line Items]
Distribution Threshold	$ 2,000,000
Distribution Threshold Two [Member] | Profits Interest Plan [Member]
Distribution Policy Members Or Limited Partners [Line Items]
Units Outstanding | shares	8,213
Distribution Threshold Three [Member] | Maximum [Member]
Distribution Policy Members Or Limited Partners [Line Items]
Distribution Threshold	$ 2,650,000
Distribution Threshold Three [Member] | Minimum [Member]
Distribution Policy Members Or Limited Partners [Line Items]
Distribution Threshold	$ 2,450,000
Distribution Threshold Three [Member] | Profits Interest Plan [Member]
Distribution Policy Members Or Limited Partners [Line Items]
Units Outstanding | shares	16,595
Distribution Threshold Four [Member] | Maximum [Member]
Distribution Policy Members Or Limited Partners [Line Items]
Distribution Threshold	$ 2,900,000
Distribution Threshold Four [Member] | Minimum [Member]
Distribution Policy Members Or Limited Partners [Line Items]
Distribution Threshold	$ 2,800,000
Distribution Threshold Four [Member] | Profits Interest Plan [Member]
Distribution Policy Members Or Limited Partners [Line Items]
Units Outstanding | shares	2,350

Profits Interest Plan - Summary

Profits Interest Plan - Summary of Profits Interest Units Activity (Detail) - Profits Interest Plan [Member]	9 Months Ended
	Jun. 30, 2021shares
Profits Interest Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Beginning balance	24,638
Units granted	10,733
Ending balance	35,371
Vested Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Units vested	5,545
Ending balance	5,545

Profits Interest Plan - Summa_2

Profits Interest Plan - Summary of Weighted Average Assumptions Used to Estimate the Fair Value of the Profits Interest Units which are Outstanding (Detail) - Profits Interest Units [Member] - Profits Interest Plan [Member]	9 Months Ended
	Jun. 30, 2021$ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value per unit	$ 3,853
Expected term (in years)	1 year 6 months 10 days
Expected volatility	37.40%
Expected dividend yield	0.00%
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate	0.07%
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate	0.67%

Segments - Summary of Key Finan

Segments - Summary of Key Financial Performance Measures by Reportable Segment (Detail) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Segment Reporting Information [Line Items]
Net sales	[1]	$ 668,867	$ 560,793	$ 1,632,176	$ 1,157,169
Adjusted income from operations	[2]	101,579	100,340	249,749	151,585
Depreciation and amortization		12,079	10,454	32,407	31,926
Capital expenditures		23,149	4,446	40,503	22,709
Operating Segments [Member]
Segment Reporting Information [Line Items]
Adjusted income from operations		171,575	153,090	413,725	280,047
Operating Segments [Member] | Americas [Member]
Segment Reporting Information [Line Items]
Net sales		339,441	315,053	891,649	649,913
Adjusted income from operations	[2]	61,206	70,153	178,246	139,082
Depreciation and amortization		2,331	169	4,474	521
Capital expenditures		26		183	39
Operating Segments [Member] | EMEA [Member]
Segment Reporting Information [Line Items]
Net sales		306,668	227,552	617,995	434,755
Adjusted income from operations	[2]	108,380	79,447	206,516	125,187
Depreciation and amortization		417	453	1,287	1,534
Capital expenditures		8,836	73	11,956	5,797
Operating Segments [Member] | APAC [Member]
Segment Reporting Information [Line Items]
Net sales		22,758	18,188	122,532	72,501
Adjusted income from operations	[2]	1,989	3,490	28,963	15,778
Depreciation and amortization		1,527	280	2,254	821
Capital expenditures		503	119	1,162	655
Corporate, Non-Segment [Member] | Corporate and Other [Member]
Segment Reporting Information [Line Items]
Adjusted income from operations	[2]	(69,996)	(52,750)	(163,976)	(128,462)
Depreciation and amortization		7,804	9,552	24,392	29,050
Capital expenditures		$ 13,784	$ 4,254	$ 27,202	$ 16,218
[1]	Includes related party royalty revenue of $128 and $34 for the three months ended June 30, 2021 and 2020, respectively, and $75 and $316 for the nine months ended June 30, 2021 and 2020, respectively (see Note 10).
[2]	Adjusted income from operations for each reportable segment includes cost of goods sold transfer price allocations and distribution allocations from Corporate/Other. Corporate/Other includes unallocated corporate and certain supply chain expenses, inter-segment eliminations and other adjustments, including business and operational transformation costs, debt refinancing and IPO costs and COVID-19 costs.

Segments - Summary of Reconcili

Segments - Summary of Reconciliation of Adjusted Income From Operations to Income Before Taxes (Detail) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment adjusted income from operations for reportable segments	[1]	$ 101,579	$ 100,340	$ 249,749	$ 151,585
Unallocated net expenses		(69,996)	(52,750)	(163,976)	(128,462)
Adjustments to income before taxes
Non-cash stock compensation / LTIP and profits interest expense		(61,714)	(975)	(94,193)	(1,867)
Gain on disposal of assets held for sale				5,185
Interest income	[2]	252	311	677	1,012
Interest expenses		(18,283)	(10,895)	(50,457)	(32,006)
Loss from early extinguishment of debt				(5,448)
Income before taxes		21,834	88,781	105,513	118,724
Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment adjusted income from operations for reportable segments		171,575	153,090	413,725	280,047
Operating Segments [Member] | Americas [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment adjusted income from operations for reportable segments	[1]	61,206	70,153	178,246	139,082
Operating Segments [Member] | EMEA [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment adjusted income from operations for reportable segments	[1]	108,380	79,447	206,516	125,187
Operating Segments [Member] | A P A C [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment adjusted income from operations for reportable segments		$ 1,989	$ 3,490	$ 28,963	$ 15,778
[1]	Adjusted income from operations for each reportable segment includes cost of goods sold transfer price allocations and distribution allocations from Corporate/Other. Corporate/Other includes unallocated corporate and certain supply chain expenses, inter-segment eliminations and other adjustments, including business and operational transformation costs, debt refinancing and IPO costs and COVID-19 costs.
[2]	Includes related party interest income of $11 and $14 for the for the three months ended June 30, 2021 and 2020, respectively, and $40 and $42 for the nine months ended June 30, 2021 and 2020, respectively (see Note 10).

Segments - Summary of Reconcila

Segments - Summary of Reconcilaition of Segment Assets to Total Consolidated Assets (Detail) - USD ($) $ in Thousands		Jun. 30, 2021	Sep. 30, 2020
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets		$ 1,698,157	$ 1,139,435
Operating Segments [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Segment assets	[1]	333,935	233,327
All other	[2]	1,364,222	906,108
Total assets		1,698,157	1,139,435
Operating Segments [Member] | Americas [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Segment assets	[1]	179,579	120,351
Operating Segments [Member] | EMEA [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Segment assets	[1]	112,414	77,477
Operating Segments [Member] | APAC [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Segment assets	[1]	$ 41,942	$ 35,499
[1]	Inventory is the only segment asset reviewed by the CODM.
[2]	“All other” consists of assets that are not reviewed by the CODM at a segment level: cash and cash equivalents; accounts receivable; prepaid expenses and other current assets; property, equipment and leasehold improvements, net; operating lease right-of-use assets; other long-term assets; trademarks, net; other intangible assets, net; and goodwill.

Income Per Unit - Summary of Ne

Income Per Unit - Summary of Net Income Per Unit (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Earnings Per Unit [Abstract]
Net income	$ 17,825	$ 79,455	$ 91,620	$ 103,062
Earnings allocated to participating securities	(129)	(721)	(730)	(1,006)
Net income attributable to common members	$ 17,696	$ 78,734	$ 90,890	$ 102,056
Basic and diluted weighted-average common units outstanding	538,777	551,774	547,515	551,760
Basic and diluted net income per common unit	$ 32.84	$ 142.69	$ 166	$ 184.97

Income Per Unit - Summary of _2

Income Per Unit - Summary of Net Income Per Unit (Parenthetical) (Detail) - shares	9 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Earnings Per Unit [Abstract]
Common units exclude from weighted average common units outstanding basic and diluted	2,443	2,263

Member Notes - Additional Infor

Member Notes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Sep. 30, 2020
Related Party Transaction [Line Items]
Capital contribution amount			$ 14,733	$ 500
Notes receivable	$ 11,776	$ 375	11,776	$ 375
Member notes receivable issued			$ 10,479		$ 7,295
Percentage of recourse provisions limt	50.00%		50.00%
Proceeds from member notes	$ 829		$ 981
Total amount due from members on the notes receivable	11,221		11,221		9,284
Accrued interest for full recourse notes and notes receivable	741		741		1,483
Unit based compensation	44,207		$ 67,296
Member Notes [Member]
Related Party Transaction [Line Items]
Interest rate			2.00%	4.00%
Total amount due from members on the notes receivable	11,221		$ 11,221		$ 9,284
Unit based compensation	$ 4,511	$ 0	4,941	$ 142
Member Notes [Member] | Partial Recourse Notes [Member]
Related Party Transaction [Line Items]
Proceeds from member notes			$ 9,138	$ 0

Subsequent Events - Additional

Subsequent Events - Additional Information (Detail) - USD ($) $ in Thousands	Aug. 31, 2021	Jun. 30, 2021
Subsequent Event [Line Items]
Payments of Stock Issuance Costs		$ 2,349
Subsequent Event [Member]
Subsequent Event [Line Items]
Percentage of retained tax savings	15.00%
Percentage of payments to members on applicable cash savings	85.00%
Subsequent Event [Member] | IPO [Member]
Subsequent Event [Line Items]
Stock Issued During Period Shares	17,900,000
Subsequent Event [Member] | IPO [Member] | Common Class A [Member]
Subsequent Event [Line Items]
Stock Issued During Period Shares	17,900,000
Stock Issued During Period, Shares, Acquisitions	17,900,000
Subsequent Event [Member] | IPO [Member] | LLC Units [Member]
Subsequent Event [Line Items]
Proceeds from Issuance Initial Public Offering	$ 237,500
Subsequent Event [Member] | Common Stock [Member] | Minimum [Member]
Subsequent Event [Line Items]
Percentage of aggregate number of outstanding shares holding	10.00%
Subsequent Event [Member] | Secured Credit Facility [Member]
Subsequent Event [Line Items]
Repayments of Debt	$ 220,132
Subsequent Event [Member] | WEBER INC [Member]
Subsequent Event [Line Items]
Percentage of retained tax savings	15.00%
Percentage of payments to members on applicable cash savings	85.00%
Subsequent Event [Member] | WEBER INC [Member] | IPO [Member]
Subsequent Event [Line Items]
Stock Issued During Period, Shares, Acquisitions	17,900,000
Proceeds from Issuance Initial Public Offering	$ 237,500
Subsequent Event [Member] | WEBER INC [Member] | IPO [Member] | Common Class A [Member]
Subsequent Event [Line Items]
Stock Issued During Period, Shares, Acquisitions	17,900,000
Subsequent Event [Member] | WEBER INC [Member] | Common Stock [Member] | Minimum [Member]
Subsequent Event [Line Items]
Percentage of aggregate number of outstanding shares holding	10.00%
Subsequent Event [Member] | WEBER INC [Member] | Secured Credit Facility [Member]
Subsequent Event [Line Items]
Repayments of Debt	$ 220,132
Subsequent Event [Member] | Weber HoldCo LLC [Member]
Subsequent Event [Line Items]
Stock Repurchased During Period, Shares	2,700,000
Subsequent Event [Member] | Weber HoldCo LLC [Member] | IPO [Member]
Subsequent Event [Line Items]
Percentage of newly issued LLC units	6.00%
Payments of Stock Issuance Costs	$ 17,368
Subsequent Event [Member] | Weber HoldCo LLC [Member] | Greenshoe Shares [Member] | Common Class A [Member]
Subsequent Event [Line Items]
Proceeds from Issuance Initial Public Offering	$ 35,625
Subsequent Event [Member] | Weber HoldCo LLC [Member] | Greenshoe Shares [Member] | Weber LLC Units One [Member]
Subsequent Event [Line Items]
Stock Issued During Period, Shares, Acquisitions	2,300,000
Subsequent Event [Member] | Weber HoldCo LLC [Member] | WEBER INC [Member] | IPO [Member]
Subsequent Event [Line Items]
Percentage of newly issued LLC units	6.00%
Payments of Stock Issuance Costs	$ 17,368
Subsequent Event [Member] | Weber HoldCo LLC [Member] | WEBER INC [Member] | Greenshoe Shares [Member] | Common Class A [Member]
Subsequent Event [Line Items]
Proceeds from Issuance Initial Public Offering	$ 35,625
Stock Repurchased During Period, Shares	2,700,000
Subsequent Event [Member] | Weber HoldCo LLC [Member] | WEBER INC [Member] | Greenshoe Shares [Member] | Weber LLC Units One [Member]
Subsequent Event [Line Items]
Stock Issued During Period, Shares, Acquisitions	2,300,000
Subsequent Event [Member] | Blocker [Member] | Greenshoe Shares [Member] | Common Class A [Member]
Subsequent Event [Line Items]
Stock Issued During Period, Shares, Acquisitions	300,000
Subsequent Event [Member] | Blocker [Member] | WEBER INC [Member] | Greenshoe Shares [Member] | Common Class A [Member]
Subsequent Event [Line Items]
Stock Issued During Period, Shares, Acquisitions	300,000