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Segment Information (Tables)
12 Months Ended
Sep. 30, 2021
Segment Reporting [Abstract]  
Schedules of Concentration of Risk, by Risk Factor [Table Text Block]
Our largest customers are Ferguson and Core & Main. Information regarding concentrations of our net sales and accounts receivable is presented below.

202120202019
Percentage of gross revenue:
10 largest customers58 %53 %53 %
2 largest customers37 %34 %34 %
Ferguson percentage of gross revenue:
   Consolidated19 %17 %18 %
   Infrastructure18 %16 %17 %
   Technologies33 %22 %30 %
Core & Main percentage of gross revenue:
   Consolidated18 %17 %16 %
   Infrastructure20 %19 %18 %
September 30,
20212020
(in millions)
Customer receivables:
Core & Main$48.1 $37.1 
Ferguson32.1 26.1 
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas
Geographical area information is presented below.

United StatesIsraelOtherTotal
 (in millions)
Property, plant and equipment, net:
September 30, 2021$263.9 $13.8 $5.7 $283.4 
September 30, 2020234.7 12.8 6.3 253.8 
Year ended
September 30,
202120202019
(in millions)
Infrastructure disaggregated net revenues:
Central$259.5 $221.7 $214.2 
Northeast195.5 187.0 183.1 
Southeast201.0 161.9 162.7 
West254.7 216.4 212.8 
United States$910.7 $787.0 $772.8 
Canada81.4 65.5 69.0 
Other international locations29.9 31.1 29.2 
$1,022.0 $883.6 $871.0 
Technologies disaggregated net revenues:
Central$21.2 $19.2 $27.8 
Northeast15.1 20.2 20.4 
Southeast31.2 22.7 33.5 
West16.8 13.9 10.3 
United States$84.3 $76.0 $92.0 
Canada and other international locations4.7 4.5 5.0 
$89.0 $80.5 $97.0 
Schedule Of Selected Supplemental Balance Sheet Information
Summarized financial information for our segments is presented below.

InfrastructureTechnologiesCorporateTotal
 (in millions)
Net revenue:
2021$1,022.0 $89.0 $— $1,111.0 
2020883.6 80.5 — 964.1 
2019871.0 97.0 — 968.0 
Operating income (loss):
2021$204.3 $(13.1)$(59.5)$131.7 
2020186.7 (13.1)(56.8)116.8 
2019182.3 (8.7)(49.3)124.3 
Depreciation and amortization:
2021$51.3 $8.1 $0.2 $59.6 
202049.1 8.5 0.2 57.8 
201944.8 7.9 0.3 53.0 
Strategic reorganization and other charges:
2021$(0.3)$— $8.3 $8.0 
20200.6 0.1 12.3 13.0 
20191.7 — 14.6 16.3 
Capital expenditures:
2021$59.1 $3.5 $0.1 $62.7 
202064.5 2.8 0.4 67.7 
201980.4 5.5 0.7 86.6 
Intangible assets, net and goodwill
September 30, 2021$473.2 $34.4 $— $507.6 
September 30, 2020490.8 17.9 — 508.7 
Inventories, net:
September 30, 2021162.0 22.7 — 184.7 
September 30, 2020143.5 19.0 — 162.5