v3.25.2
Segments - Schedule of Segment Reporting Information, by Segment (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Segment Reporting Information [Line Items]        
Net sales $ 725.3 $ 701.4 $ 2,119.9 $ 2,081.3
Segment Profit 399.7 277.2 928.3 797.5
Amortization of intangible assets (14.7) (14.5) (44.1) (43.5)
Impairment of intangible assets 0.0 (110.6) 0.0 (110.6)
Restructuring costs (8.0) (18.8) (45.9) (64.6)
Acquisition and integration costs   (1.6)   (4.9)
Government assistance, production credit 112.4      
Loss on extinguishment/modification of debt 0.0 (1.2) (5.3) (2.1)
December 2023 Argentina Economic Reform (7) (2.0) 0.3 1.4 (29.3)
Nonoperating Income (Expense), Net Of Adjustments (1.9) 0.6 3.0 (2.9)
Net (loss)/earnings 164.2 (57.5) 230.7 (5.7)
Depreciation and amortization 31.9 30.7 94.6 89.6
ARGENTINA        
Segment Reporting Information [Line Items]        
December 2023 Argentina Economic Reform (7)     (22.0) (22.0)
Cost of Sales        
Segment Reporting Information [Line Items]        
Acquisition and integration costs   (0.2)   (3.1)
Selling, general and administrate expense | IT enablement        
Segment Reporting Information [Line Items]        
Restructuring costs (1.7) (2.8) (13.2) (10.0)
Project Momentum Restructuring        
Segment Reporting Information [Line Items]        
Restructuring costs (6.3) (16.0) (32.7) (54.6)
Operating Segments        
Segment Reporting Information [Line Items]        
Segment Profit 182.9 156.2 470.2 449.4
Depreciation and amortization 17.2 16.2 50.5 46.1
Operating Segments | Batteries & Lights        
Segment Reporting Information [Line Items]        
Net sales 535.1 509.1 1,655.5 1,607.9
Segment Profit 158.8 129.4 390.4 375.3
Restructuring costs (7.1) (15.7) (41.5) (56.9)
Depreciation and amortization 13.7 12.9 40.6 37.2
Operating Segments | Auto Care        
Segment Reporting Information [Line Items]        
Net sales 190.2 192.3 464.4 473.4
Segment Profit 24.1 26.8 79.8 74.1
Restructuring costs (0.9) (3.1) (4.4) (7.7)
Depreciation and amortization 3.5 3.3 9.9 8.9
Corporate        
Segment Reporting Information [Line Items]        
General corporate and other expenses (33.1) (29.1) (91.0) (86.6)
Amortization of intangible assets (14.7) (14.5) (44.1) (43.5)
Impairment of intangible assets 0.0 (110.6) 0.0 (110.6)
Restructuring costs (8.0) (18.8) (45.9) (64.6)
Network transition costs (0.9) 0.0 (17.6) 0.0
Acquisition and integration costs (1.3) (1.6) (4.8) (4.9)
Government assistance, production credit 78.5 0.0 78.5 0.0
Litigation Matter 1.7 0.0 1.7 0.0
Interest expense 39.0 38.5 114.0 117.9
Loss on extinguishment/modification of debt 0.0 (1.2) (5.3) (2.1)
Nonoperating Income (Expense), Net Of Adjustments (1.9) 0.6 3.0 (2.9)
Corporate | ARGENTINA        
Segment Reporting Information [Line Items]        
December 2023 Argentina Economic Reform (7) 0.0 0.0 0.0 (22.0)
Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment        
Segment Reporting Information [Line Items]        
Restructuring costs (8.0) (18.8) (45.9) (64.6)
Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment | Cost of Sales        
Segment Reporting Information [Line Items]        
Restructuring costs (2.9) (13.4) (21.0) (41.7)
Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment | Selling, general and administrate expense        
Segment Reporting Information [Line Items]        
Restructuring costs (3.4) (7.0) (12.0) (17.3)
Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment | Selling, general and administrate expense | IT enablement        
Segment Reporting Information [Line Items]        
Restructuring costs $ (1.7) $ (2.8) $ (13.2) $ (10.0)