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Note 15. Earnings (Loss) Per Share Earnings (Loss) Per Share (Tables) | 12 Months Ended
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Dec. 31, 2018
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] | The following table sets forth the computation of basic and diluted earnings per share:
|  | Year Ended December 31,
(in millions, except per share data) |  | 2018 |  | 2017 |  | 2016
Net income attributable to Realogy Holdings shareholders |  | $ | 137 |  |  | $ | 431 |  |  | $ | 213 |
Basic weighted average shares |  | 124.0 |  |  | 136.7 |  |  | 144.5 |
Stock options, restricted stock units and performance share units (a) |  | 1.3 |  |  | 1.7 |  |  | 1.3 |
Weighted average diluted shares |  | 125.3 |  |  | 138.4 |  |  | 145.8 |
Earnings Per Share: |  |  |  |  |  |
Basic |  | $ | 1.10 |  |  | $ | 3.15 |  |  | $ | 1.47 |
Diluted |  | $ | 1.09 |  |  | $ | 3.11 |  |  | $ | 1.46 |
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(a) | Excludes 6.9 million, 5.3 million and 4.5 million shares of common stock issuable for incentive equity awards which includes performance share units based on the achievement of target amounts, for the years ended December 31, 2018, 2017 and 2016, respectively, that are anti-dilutive to the diluted earnings per share computation.

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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