Segment Information (Tables)

12 Months Ended

Sep. 30, 2020

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.

	2020		2019		2018
Percentage of gross revenue:
10 largest customers	53	%	53	%	54	%
2 largest customers	34	%	34	%	34	%
Ferguson percentage of gross revenue:
Consolidated	17	%	18	%	19	%
Infrastructure	16	%	17	%	18	%
Technologies	22	%	30	%	28	%
Core & Main percentage of gross revenue:
Consolidated	17	%	16	%	15	%
Infrastructure	19	%	18	%	17	%

	September 30,
	2020		2019
	(in millions)
Customer receivables:
Core & Main	$	37.1	$	31.9
Ferguson	26.1		25.8

Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas

Geographical area information is presented below.

	United States		Israel		Other		Total
	(in millions)
Property, plant and equipment, net:
September 30, 2020	$	234.7	$	12.8	$	6.3	$	253.8
September 30, 2019	201.3		9.7		6.1		217.1

	Year ended
	September 30,
	2020		2019
	(in millions)
Infrastructure disaggregated net revenues:
Central	$	222.2	$	214.2
Northeast	187.5		183.1
Southeast	162.3		162.7
West	216.9		212.8
United States	$	788.9	$	772.8
Canada	65.5		69.0
Other international locations	31.1		29.2
	$	885.5	$	871.0
Technologies disaggregated net revenues:
Central	$	18.7	$	27.8
Northeast	19.7		20.4
Southeast	22.1		33.5
West	13.6		10.3
United States	$	74.1	$	92.0
Canada and other international locations	4.5		5.0
	$	78.6	$	97.0

Schedule Of Selected Supplemental Balance Sheet Information

Summarized financial information for our segments is presented below.

	Infrastructure		Technologies		Corporate		Total
	(in millions)
Net revenue:
2020	$	885.5	$	78.6	$	—	$	964.1
2019	871.0		97.0		—		968.0
2018	818.8		97.2		—		916.0
Operating income (loss):
2020	$	186.7	$	(13.1)	$	(56.8)	$	116.8
2019	182.3		(8.7)		(49.3)		124.3
2018	180.1		(24.4)		(34.0)		121.7
Depreciation and amortization:
2020	$	49.1	$	8.5	$	0.2	$	57.8
2019	44.8		7.9		0.3		53.0
2018	37.4		6.1		0.2		43.7
Other charges:
2020	$	0.6	$	0.1	$	12.3	$	13.0
2019	1.7		—		14.6		16.3
2018	0.1		0.1		10.3		10.5
Capital expenditures:
2020	$	64.5	$	2.8	$	0.4	$	67.7
2019	80.4		5.5		0.7		86.6
2018	47.3		8.3		0.1		55.7
Total assets:
September 30, 2020	$	1,149.8	$	93.2	$	152.0	$	1,395.0
September 30, 2019	1,107.8		100.3		129.2		1,337.3
Intangible assets, net:
September 30, 2020	$	490.8	$	17.9	$	—	$	508.7
September 30, 2019	508.2		21.2		—		529.4