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GOODWILL AND OTHER INTANGIBLE ASSETS - Schedule of Changes in Carrying Amount of Goodwill (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2024 | Sep. 30, 2023 | Dec. 31, 2025 | Dec. 31, 2024 | Sep. 30, 2024 | Dec. 31, 2023
Goodwill [Line Items] |  |  |  |  |  |
Gross Goodwill |  |  | $ 999 | $ 973 |  | $ 1,043
Accumulated Impairment Losses |  |  | (376) | (376) |  | (440)
Changes in the carrying amount of goodwill |  |  |  |  |  |
Beginning balance |  |  | 597 | 604 |  |
Acquisitions |  |  | 0 | 6 |  |
Foreign Currency Translation |  |  | 26 | (12) |  |
Ending balance |  |  | 623 | 597 |  |
Sauna360 |  |  |  |  |  |
Changes in the carrying amount of goodwill |  |  |  |  |  |
Acquisitions |  | $ 60 |  |  |  |
Plumbing Products |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |
Gross Goodwill |  |  | 694 | 667 |  | 677
Accumulated Impairment Losses |  |  | (301) | (301) |  | (301)
Changes in the carrying amount of goodwill |  |  |  |  |  |
Beginning balance |  |  | 367 | 377 |  |
Acquisitions |  |  | 0 | 2 |  |
Foreign Currency Translation |  |  | 26 | (12) |  |
Ending balance |  |  | 393 | 367 |  |
Plumbing Products | Sauna360 |  |  |  |  |  |
Changes in the carrying amount of goodwill |  |  |  |  |  |
Acquisitions |  | $ 2 |  |  |  |
Decorative Architectural Products |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |
Gross Goodwill |  |  | 305 | 305 |  | 366
Accumulated Impairment Losses |  |  | (75) | (75) |  | $ (139)
Changes in the carrying amount of goodwill |  |  |  |  |  |
Beginning balance |  |  | 230 | 227 |  |
Acquisitions |  |  | 0 | 4 |  |
Foreign Currency Translation |  |  | 0 | 0 |  |
Ending balance |  |  | $ 230 | $ 230 |  |
Decorative Architectural Products | Sauna360 |  |  |  |  |  |
Changes in the carrying amount of goodwill |  |  |  |  |  |
Acquisitions | $ 4 |  |  |  |  |
The LD Kichler Co | Decorative Architectural Products |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |
Gross Goodwill |  |  |  |  | $ 64 |
Accumulated Impairment Losses |  |  |  |  | $ 64 |

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