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v3.20.4

Segment Information (Narrative) (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Segment Reporting Information [Line Items] |  |
Restructuring and other charges | $ 1.4 | $ 2.4
Operating income | 27.8 | 20.3
Depreciation, Depletion and Amortization | 14.7 | 14.0
Payments to Acquire Productive Assets | 15.6 | 15.2
Net sales | 237.4 | 212.6
Mueller Co. [Member] |  |
Segment Reporting Information [Line Items] |  |
Restructuring and other charges | 0.1 | 0.0
Operating income | 41.6 | 35.5
Depreciation, Depletion and Amortization | 12.5 | 12.0
Payments to Acquire Productive Assets | 14.7 | 14.5
Net sales | 215.9 | 192.3
Mueller Co. [Member] | Central Region [Member] |  |
Segment Reporting Information [Line Items] |  |
Net sales | 56.9 | 46.4
Corporate |  |
Segment Reporting Information [Line Items] |  |
Restructuring and other charges | 1.3 | 2.4
Operating income | (12.3) | (13.4)
Depreciation, Depletion and Amortization | 0.1 | 0.0
Payments to Acquire Productive Assets | 0.1 | 0.1
Mueller Technologies [Member] |  |
Segment Reporting Information [Line Items] |  |
Restructuring and other charges | 0.0 | 0.0
Operating income | (1.5) | (1.8)
Depreciation, Depletion and Amortization | 2.1 | 2.0
Payments to Acquire Productive Assets | 0.8 | 0.6
Net sales | 21.5 | 20.3
Mueller Technologies [Member] | Central Region [Member] |  |
Segment Reporting Information [Line Items] |  |
Net sales | $ 4.9 | $ 4.8

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