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Goodwill and Other Intangible Assets - Goodwill Rollforward (Details) - USD ($) $ in Millions | 6 Months Ended |  |
--- | --- | --- | ---
Jun. 30, 2020 | Jun. 30, 2020 | Dec. 31, 2019
Goodwill [Line Items] |  |  |
Gross goodwill |  | $ 936 | $ 924
Accumulated Impairment Losses |  | (415) | (415)
Net goodwill | $ 521 | 521 | 509
Goodwill [Roll Forward] |  |  |
Gross goodwill |  | 936 | 924
Accumulated Impairment Losses |  | (415) | (415)
Net Goodwill, December 31, 2019 | 509 |  |
Acquisitions | 12 |  |
Net Goodwill, June 30, 2020 | 521 |  |
Plumbing Products |  |  |
Goodwill [Line Items] |  |  |
Gross goodwill |  | 578 | 566
Accumulated Impairment Losses |  | (340) | (340)
Net goodwill | 226 | 238 | 226
Goodwill [Roll Forward] |  |  |
Gross goodwill |  | 578 | 566
Accumulated Impairment Losses |  | (340) | (340)
Net Goodwill, December 31, 2019 | 226 |  |
Acquisitions | 12 |  |
Net Goodwill, June 30, 2020 | 238 |  |
Decorative Architectural Products |  |  |
Goodwill [Line Items] |  |  |
Gross goodwill |  | 358 | 358
Accumulated Impairment Losses |  | (75) | (75)
Net goodwill | 283 | 283 | 283
Goodwill [Roll Forward] |  |  |
Gross goodwill |  | 358 | 358
Accumulated Impairment Losses |  | $ (75) | $ (75)
Net Goodwill, December 31, 2019 | 283 |  |
Acquisitions | 0 |  |
Net Goodwill, June 30, 2020 | $ 283 |  |

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