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Earnings Per Share (Tables) | 3 Months Ended
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Mar. 31, 2017
Earnings Per Share [Abstract] |
Summary of Computation of Basic and Diluted Earnings Per Share | The following table sets forth the computation of basic and diluted earnings per share:
| Three Months Ended March 31,
| 2017 |  | 2016
| (in millions, except share and per share amounts)
Numerator: |  |  |
Net income attributable to common shareholders | $ | 169 |  |  | $ | 132 |
Denominator: |  |  |
Weighted-average common shares outstanding for basic earnings per share | 166,473,073 |  |  | 164,281,692 |
Weighted-average effect of dilutive securities: |  |  |
Employee equity awards | 3,773,874 |  |  | 4,086,752 |
Weighted-average common shares outstanding for diluted earnings per share | 170,246,947 |  |  | 168,368,444 |
Basic and diluted earnings per share: |  |  |
Basic earnings per share | $ | 1.02 |  |  | $ | 0.80 |
Diluted earnings per share | $ | 0.99 |  |  | $ | 0.78 |

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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://www.xbrl.org/2003/role/presentationRef -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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