Revenue (Tables)

12 Months Ended

Sep. 30, 2021

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

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

Schedule of Revenue from External Customers by Geographic Areas

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

The following tables set forth external net revenue, net of intercompany eliminations, and net asset information by region:

	Year Ended September 30,
	2021		2020		2019
Sales to external customers
United States	$	1,174,474	$	1,164,634	$	1,147,649
Rest of World	289,955		264,822		296,792
Total	$	1,464,429	$	1,429,456	$	1,444,441

Contract with Customer, Asset and Liability

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