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Revenue (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019 | Dec. 31, 2019
Disaggregation of Revenue [Line Items] |  |  |  |  |
Net sales | $ 1,983 | $ 1,716 | $ 5,328 | $ 5,068 |
Contract with customer, asset, gross, current | 2 |  | 2 |  | $ 2
Contract with customer, liability | 25 |  | 25 |  | $ 40
Contract with customer, liability, revenue recognized | 6 | 2 |  |  |
Performance obligation satisfied in previous period | 1 |  | 6 | 1 |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Balance at January 1 (after adopting ASU 2016-13) |  |  | 5 |  |
Provision for expected credit losses during the period |  |  | 2 |  |
Write-offs charged against the allowance |  |  | (1) |  |
Recoveries of amounts previously written off |  |  | 1 |  |
Balance at end of period | 7 |  | 7 |  |
Plumbing Products |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Net sales | 1,141 | 1,006 | 2,964 | 2,958 |
Decorative Architectural Products |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Net sales | 842 | 710 | 2,364 | 2,110 |
North America |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Net sales | 1,599 | 1,374 | 4,337 | 4,033 |
North America | Plumbing Products |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Net sales | 757 | 664 | 1,973 | 1,923 |
North America | Decorative Architectural Products |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Net sales | 842 | 710 | 2,364 | 2,110 |
International, principally Europe |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Net sales | 384 | 342 | 991 | 1,035 |
International, principally Europe | Plumbing Products |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Net sales | 384 | 342 | 991 | 1,035 |
International, principally Europe | Decorative Architectural Products |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Net sales | $ 0 | $ 0 | $ 0 | $ 0 |

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