XML 103 R86.htm IDEA: XBRL DOCUMENT v3.21.2
Segment Information (Schedule Of Selected Supplemental Balance Sheet Information) (Details) - USD ($)
$ in Millions
 12 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2019
Segment Reporting Information [Line Items]      
Intercompany sales $ 1,111.0 $ 964.1 $ 968.0
Operating income 131.7 116.8 124.3
Depreciation and amortization 59.6 57.8 53.0
2016 8.0 13.0 16.3
Capital expenditures (62.7) (67.7) (86.6)
Property, plant and equipment, net 283.4 253.8  
Total assets $ 1,518.0 1,395.0  
Document Period End Date Sep. 30, 2021    
Intangible Assets, Net (Including Goodwill) $ 507.6 508.7  
Mueller Co. [Member]      
Segment Reporting Information [Line Items]      
Intercompany sales 1,022.0 883.6 871.0
Operating income 204.3 186.7 182.3
Depreciation and amortization 51.3 49.1 44.8
2016 (0.3) 0.6 1.7
Capital expenditures (59.1) (64.5) (80.4)
Intangible Assets, Net (Including Goodwill) 473.2 490.8  
Mueller Technologies [Member]      
Segment Reporting Information [Line Items]      
Intercompany sales 89.0 80.5 97.0
Operating income (13.1) (13.1) (8.7)
Depreciation and amortization 8.1 8.5 7.9
2016 0.0 0.1 0.0
Capital expenditures (3.5) (2.8) (5.5)
Intangible Assets, Net (Including Goodwill) 34.4 17.9  
Corporate [Member]      
Segment Reporting Information [Line Items]      
Intercompany sales 0.0 0.0 0.0
Operating income (59.5) (56.8) (49.3)
Depreciation and amortization 0.2 0.2 0.3
2016 8.3 12.3 14.6
Capital expenditures (0.1) (0.4) $ (0.7)
Intangible Assets, Net (Including Goodwill) $ 0.0 $ 0.0