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Earnings per Share | 12 Months Ended
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Dec. 31, 2017
Earnings Per Share [Abstract] |
Earnings per Share [Text Block] | Earnings per Share Reconciliation of the numerators and denominators of the earnings per share calculations —
| 2017 |  | 2016 |  | 2015
Income from continuing operations | $ | 116 |  |  | $ | 653 |  |  | $ | 176 |
Less: Noncontrolling interests net income | 10 |  |  | 13 |  |  | 21 |
Less: Redeemable noncontrolling interests net loss | (5 | ) |  |  |  |  |  |
Less: Redeemable noncontrolling interests adjustment to redemption value | (6 | ) |  |  |  |  |  |
Income from continuing operations available to common stockholders - Numerator basic and diluted | $ | 105 |  |  | $ | 640 |  |  | $ | 155 |
Net income available to common stockholders - Numerator basic and diluted | $ | 105 |  |  | $ | 640 |  |  | $ | 159 |
Denominator: |  |  |  |  |
Weighted-average shares outstanding - Basic | 145.1 |  |  | 146.0 |  |  | 159.0 |
Employee compensation-related shares, including stock options | 1.8 |  |  | 0.8 |  |  | 1.0 |
Weighted-average shares outstanding - Diluted | 146.9 |  |  | 146.8 |  |  | 160.0 |
The share count for diluted earnings per share is computed on the basis of the weighted-average number of common shares outstanding plus the effects of dilutive common stock equivalents (CSEs) outstanding during the period. We excluded 0.1 million, 1.7 million and 0.4 million CSEs from the calculations of diluted earnings per share for the years 2017, 2016 and 2015 as the effect of including them would have been anti-dilutive.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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