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Accounting Policies - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Jun. 30, 2018 | Jun. 30, 2017 | Sep. 30, 2017 | Dec. 31, 2017 | Dec. 31, 2016
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales | $ 2,297 |  |  |  | $ 2,066 |  | $ 4,217 | $ 3,844 |  |  |
Operating Income (Loss) | 358 |  | $ 256 | $ 309 | 372 | $ 257 | 602 | 629 | $ 938 | $ 1,194 | $ 1,087
Other, net | (8) |  |  |  | 43 |  | (11) | 39 |  |  |
Reclassification from AOCI, Current Period, Tax |  | $ 59 |  |  |  |  |  |  |  |  |
Accounting Standards Update 2014-09 |  |  |  |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  | 9 |  |  | 10 |  | (2) | 4
Operating Income (Loss) |  |  |  |  | 7 |  |  | 4 |  | (1) | 2
Accounting Standards Update 2017-07 |  |  |  |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |  |  |  |
Other, net |  |  |  |  | 8 |  |  | 15 |  | 26 |
Accounting Standards Update 2018-02 |  |  |  |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |  |  |  |
Other, net |  |  |  |  |  |  |  |  |  |  | 32
Operating Segments [Member] |  |  |  |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales | 2,297 |  | 1,853 | 1,945 | 2,066 | 1,778 | 4,217 | 3,844 | 5,789 | 7,642 | 7,361
Operating Income (Loss) | 380 |  | 277 | 331 | 398 | 280 | 642 | 678 | 1,009 | 1,286 | 1,181
Cabinetry Products [Member] |  |  |  |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales | 268 |  |  |  | 251 |  | 485 | 482 |  |  |
Cabinetry Products [Member] | Operating Segments [Member] |  |  |  |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales | 268 |  | 223 | 229 | 251 | 231 | 485 | 482 | 711 | 934 | 970
Operating Income (Loss) | 33 |  | 25 | 20 | 31 | 16 | 39 | 47 | 67 | 92 | 97
Windows and Other Specialty Products [Member] |  |  |  |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales | 191 |  |  |  | 205 |  | 378 | 384 |  |  |
Windows and Other Specialty Products [Member] | Operating Segments [Member] |  |  |  |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales | 191 |  | 182 | 204 | 205 | 179 | 378 | 384 | 588 | 770 | 770
Operating Income (Loss) | $ 8 |  | $ 4 | $ 24 | $ 18 | $ 8 | $ 12 | $ 26 | $ 50 | $ 54 | $ (3)

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