Revenue

12 Months Ended

Sep. 30, 2021

Revenue from Contract with Customer [Abstract]

Revenue

Revenue

Disaggregation of Revenue

In accordance with Topic 606, the Company disaggregates revenue from contracts with customers into source of revenue, reportable operating segment, and geographical regions. The Company determined that disaggregating revenue into these categories meets the disclosure objective in Topic 606 which is to depict how the nature, amount, timing and uncertainty of revenue and cash flows are affected by economic factors.

Information regarding the source of revenue:

	Year Ended September 30,
	2021		2020		2019
Revenue from contracts with customers recognized under Topic 606	$	1,274,096	$	1,279,772	$	1,309,303
Other(1)	190,333		149,684		135,138
Total	$	1,464,429	$	1,429,456	$	1,444,441

(1)     Other revenue relates to revenue recognized pursuant to ASU 2016-02, Leases (Topic 842), primarily attributable to long term rentals.

Information regarding revenue disaggregated by segment and source of revenue is as follows:

	Year Ended September 30,
	2021		2020		2019
Integrated Solutions and Services
Revenue from capital projects	$	250,187	$	257,528	$	219,289
Revenue from aftermarket	128,585		119,051		122,719
Revenue from service	581,114		567,603		568,826
Total	$	959,886	$	944,182	$	910,834
Applied Product Technologies
Revenue from capital projects	$	365,791	$	335,227	$	344,097
Revenue from aftermarket	116,463		128,051		165,056
Revenue from service	22,289		21,996		24,454
Total	$	504,543	$	485,274	$	533,607
Total Revenue
Revenue from capital projects	$	615,978	$	592,755	$	563,386
Revenue from aftermarket	$	245,048	$	247,102	$	287,775
Revenue from service	$	603,403	$	589,599	$	593,280
Total	$	1,464,429	$	1,429,456	$	1,444,441

Information regarding revenue disaggregated by geographic area is as follows:

	Year Ended September 30,
	2021		2020		2019
United States	$	1,174,474	$	1,164,634	$	1,147,649
Europe	113,559		108,139		102,998
Asia	113,316		77,253		90,273
Canada	49,952		65,223		80,083
Australia	13,128		14,207		23,438
Total	$	1,464,429	$	1,429,456	$	1,444,441

Performance Obligations

The Company elects to apply the practical expedient to exclude from this disclosure revenue related to performance obligations if the product has an alternative use and the Company does not have an enforceable right to payment for the performance completed to date, including a normal profit margin, in the event of termination for convenience. The Company maintains a backlog of confirmed orders of approximately $275,589 at September 30, 2021. This backlog represents the aggregate amount of the transaction price allocated to performance obligations that were unsatisfied or partially unsatisfied as of the end of the reporting period. The Company estimates that the majority of these performance obligations will be satisfied within the next twelve to twenty-four months.

Contract Balances

The tables below provide a roll-forward of contract assets and contract liabilities balances for the periods presented:

	Year Ended September 30,
Contract assets(a)	2021		2020
Balance at beginning of period	$	80,759	$	73,467
Recognized in current period	316,864		347,660
Reclassified to accounts receivable	(325,405)		(342,371)
Amounts related to sale of the Memcor product line	—		2,710
Foreign currency	528		(707)
Balance at end of period	$	72,746	$	80,759

(a)     Excludes receivable balances which are disclosed on the Consolidated Balance Sheets.

	Year Ended September 30,
Contract Liabilities	2021		2020
Balance at beginning of period	$	26,259	$	39,051
Recognized in current period	349,046		322,595
Amounts in beginning balance reclassified to revenue	(25,523)		(39,100)
Current period amounts reclassified to revenue	(294,033)		(295,085)
Amounts related to sale of the Memcor product line	—		(700)
Foreign currency	134		(502)
Balance at end of period	$	55,883	$	26,259