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Goodwill and Other Intangibles, Net - Additional Information (Details) - USD ($) $ in Millions |  | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Oct. 01, 2024 | Sep. 30, 2025 | Jun. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract] |  |  |  |  |  |  |
Amortization expense of intangible assets |  | $ 32.7 |  | $ 30.7 | $ 86.9 | $ 92.2 |
Estimated amortization expense, 2025 |  | 121.0 |  |  | 121.0 |  |
Impairment Charge on Reclassified Assets |  |  |  |  |  | 60.0 |
Other Assets, Noncurrent |  | 377.7 |  |  | 377.7 |  | $ 378.0
Fair Value Exceeded Carrying Value | 135.00% |  |  |  |  |  |
Pre-Tax Impairment Charge |  | 75.8 |  |  | 75.8 |  |
Property, Plant and Equipment, Net |  | 938.1 |  |  | 938.1 |  | 931.7
Net Sales |  | 1,585.6 |  | 1,510.6 | 4,559.0 | 4,525.1 |
Cost of sales |  | 871.2 |  | 827.5 | 2,538.0 | 2,442.9 |
Selling, general and administrative expenses |  | 256.9 |  | 231.7 | 712.8 | 684.5 |
Selling, general and administrative expenses |  | 0.0 |  | $ 357.1 | 0.0 | $ 357.1 |
Property Plant And Equipment |  |  |  |  |  |  |
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract] |  |  |  |  |  |  |
Impairment charges on assets |  |  |  |  | 60.0 |  |
Property, Plant and Equipment, Net |  | 142.8 |  |  | 142.8 |  |
Flawless, Spinbrush and Waterpik showerhead |  |  |  |  |  |  |
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract] |  |  |  |  |  |  |
Pre-Tax Impairment Charge |  |  | $ 51.0 |  |  |  |
Net Sales |  |  |  |  |  |  | 170.0
Cost of sales |  |  | 30.4 |  |  |  |
Selling, general and administrative expenses |  |  | $ 20.6 |  |  |  |
Trade Names |  |  |  |  |  |  |
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract] |  |  |  |  |  |  |
Impairment charges on assets |  |  |  |  | $ 281.3 |  |
Discount on estimated future cashflow |  |  |  |  | 8.25% |  |
Indefinite-Lived Trade Names | $ 644.7 |  |  |  |  |  | $ 0.0
Waterpik Member |  |  |  |  |  |  |
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract] |  |  |  |  |  |  |
Discount on estimated future cashflow | 8.10% |  |  |  |  |  |
Customer-Related Intangible Assets [Member] |  |  |  |  |  |  |
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract] |  |  |  |  |  |  |
Impairment charges on assets |  |  |  |  | $ 15.8 |  |
Indefinite-Lived Trade Names |  | 0.0 |  |  | 0.0 |  |
Maximum |  |  |  |  |  |  |
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract] |  |  |  |  |  |  |
Estimated amortization expense, 2027 |  | $ 135.0 |  |  | $ 135.0 |  |
Maximum | Trade Names |  |  |  |  |  |  |
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract] |  |  |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life |  | 20 years |  |  | 20 years |  |
Minimum [Member] |  |  |  |  |  |  |
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract] |  |  |  |  |  |  |
Estimated amortization expense, 2027 |  | $ 122.0 |  |  | $ 122.0 |  |
Minimum [Member] | Trade Names |  |  |  |  |  |  |
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract] |  |  |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life |  | 3 years |  |  | 3 years |  |

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