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v3.24.0.1

Segment Information (Narrative) (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Segment Reporting Information [Line Items] |  |
Restructuring and other charges | $ 6.6 | $ (3.7)
Operating income | 22.8 | 34.0
Depreciation, Depletion and Amortization | 16.4 | 14.8
Payments to Acquire Productive Assets | 5.7 | 9.9
Net sales | 256.4 | 314.8
Mueller Co. [Member] |  |
Segment Reporting Information [Line Items] |  |
Restructuring and other charges | 0.2 | 0.0
Operating income | 27.2 | 24.2
Depreciation, Depletion and Amortization | 9.3 | 7.7
Payments to Acquire Productive Assets | 3.9 | 7.8
Net sales | 141.3 | 165.6
Mueller Co. [Member] | Central Region [Member] |  |
Segment Reporting Information [Line Items] |  |
Net sales | 38.5 | 44.0
Mueller Co. [Member] | Northeast Region [Member] [Member] |  |
Segment Reporting Information [Line Items] |  |
Net sales | 28.3 | 31.3
Mueller Co. [Member] | Southeast Region [Member] |  |
Segment Reporting Information [Line Items] |  |
Net sales | 37.1 | 33.4
Mueller Co. [Member] | Western Region [Member] |  |
Segment Reporting Information [Line Items] |  |
Net sales | 30.6 | 49.2
Mueller Co. [Member] | UNITED STATES |  |
Segment Reporting Information [Line Items] |  |
Net sales | 134.5 | 157.9
Mueller Co. [Member] | CANADA |  |
Segment Reporting Information [Line Items] |  |
Net sales | 4.8 | 4.4
Mueller Co. [Member] | Other International Locations [Member] |  |
Segment Reporting Information [Line Items] |  |
Net sales | 2.0 | 3.3
Corporate |  |
Segment Reporting Information [Line Items] |  |
Restructuring and other charges | 6.4 | (3.7)
Operating income | (19.5) | (9.8)
Depreciation, Depletion and Amortization | 0.1 | 0.1
Payments to Acquire Productive Assets | 0.0 | 0.0
Mueller Technologies [Member] |  |
Segment Reporting Information [Line Items] |  |
Restructuring and other charges | 0.0 | 0.0
Operating income | 15.1 | 19.6
Depreciation, Depletion and Amortization | 7.0 | 7.0
Payments to Acquire Productive Assets | 1.8 | 2.1
Net sales | 115.1 | 149.2
Mueller Technologies [Member] | Central Region [Member] |  |
Segment Reporting Information [Line Items] |  |
Net sales | 29.2 | 41.5
Mueller Technologies [Member] | Northeast Region [Member] [Member] |  |
Segment Reporting Information [Line Items] |  |
Net sales | 26.8 | 31.2
Mueller Technologies [Member] | Southeast Region [Member] |  |
Segment Reporting Information [Line Items] |  |
Net sales | 28.4 | 33.3
Mueller Technologies [Member] | Western Region [Member] |  |
Segment Reporting Information [Line Items] |  |
Net sales | 20.0 | 29.1
Mueller Technologies [Member] | UNITED STATES |  |
Segment Reporting Information [Line Items] |  |
Net sales | 104.4 | 135.1
Mueller Technologies [Member] | CANADA |  |
Segment Reporting Information [Line Items] |  |
Net sales | 5.7 | 7.3
Mueller Technologies [Member] | Other International Locations [Member] |  |
Segment Reporting Information [Line Items] |  |
Net sales | $ 5.0 | $ 6.8

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