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Goodwill and Other Intangible Assets - Goodwill Rollforward (Details) - USD ($) $ in Millions | 9 Months Ended |  |
--- | --- | --- | ---
Sep. 30, 2020 | Sep. 30, 2020 | Dec. 31, 2019
Goodwill [Line Items] |  |  |
Gross goodwill |  | $ 943 | $ 924
Accumulated Impairment Losses |  | (415) | (415)
Net goodwill | $ 509 | 528 | 509
Goodwill [Roll Forward] |  |  |
Gross goodwill |  | 943 | 924
Accumulated Impairment Losses |  | (415) | (415)
December 31, 2019 | 509 |  |
Acquisitions | 14 |  |
Goodwill, Other Increase (Decrease) | 5 |  |
September 30, 2020 | 528 |  |
Plumbing Products |  |  |
Goodwill [Line Items] |  |  |
Gross goodwill |  | 585 | 566
Accumulated Impairment Losses |  | (340) | (340)
Net goodwill | 245 | 245 | 226
Goodwill [Roll Forward] |  |  |
Gross goodwill |  | 585 | 566
Accumulated Impairment Losses |  | (340) | (340)
December 31, 2019 | 226 |  |
Acquisitions | 14 |  |
Goodwill, Other Increase (Decrease) | 5 |  |
September 30, 2020 | 245 |  |
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)
December 31, 2019 | 283 |  |
Acquisitions | 0 |  |
Goodwill, Other Increase (Decrease) | 0 |  |
September 30, 2020 | $ 283 |  |

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- Definition Amount before accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267 + Details
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