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Earnings Per Share | 12 Months Ended
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Dec. 31, 2016
Earnings Per Share [Abstract] |
Earnings Per Share | Earnings Per Share The following table sets forth the computation of basic and diluted earnings per share:
| Year Ended December 31,
| 2016 |  | 2015 |  | 2014
| (in millions, except share and per share amounts)
Numerator: |  |  |  |  |
Net income attributable to common shareholders | $ | 108 |  |  | $ | 428 |  |  | $ | 414 |
Denominator: |  |  |  |  |
Weighted-average common shares outstanding for basic earnings per share | 165,182,290 |  |  | 167,285,450 |  |  | 168,926,733 |
Weighted-average effect of dilutive securities: |  |  |  |  |
Employee equity awards | 3,258,136 |  |  | 3,638,981 |  |  | 3,727,839 |
Contingent issuance of common stock | 360,571 |  |  | 358,840 |  |  | 364,277 |
Weighted-average common shares outstanding for diluted earnings per share | 168,800,997 |  |  | 171,283,271 |  |  | 173,018,849 |
Basic and diluted earnings per share: |  |  |  |  |
Basic earnings per share | $ | 0.65 |  |  | $ | 2.56 |  |  | $ | 2.45 |
Diluted earnings per share | $ | 0.64 |  |  | $ | 2.50 |  |  | $ | 2.39 |
For further discussion of our contingent issuance of common stock, see “Non-Cash Contingent Consideration,” of Note 18, “Commitments, Contingencies and Guarantees.” Stock options to purchase 1,406,371 shares of common stock and 4,254,012 shares of restricted stock and PSUs were outstanding at December 31, 2016. For the year ended December 31, 2016, we included all of the outstanding stock options and 3,663,919 shares of restricted stock and PSUs in the computation of diluted earnings per share, on a weighted-average basis, as their inclusion was dilutive. The remaining shares of restricted stock and PSUs are antidilutive, and as such, they were properly excluded. Stock options to purchase 2,626,487 shares of common stock and 5,207,423 shares of restricted stock and PSUs were outstanding at December 31, 2015. For the year ended December 31, 2015, we included all of the outstanding stock options and 4,842,383 shares of restricted stock and PSUs in the computation of diluted earnings per share, on a weighted-average basis, as their inclusion was dilutive. The remaining shares of restricted stock and PSUs are antidilutive, and as such, they were properly excluded. Stock options to purchase 3,316,782 shares of common stock and 5,405,837 shares of restricted stock and PSUs were outstanding at December 31, 2014. For the year ended December 31, 2014, we included 3,198,842 of the outstanding stock options and 4,836,518 shares of restricted stock and PSUs in the computation of diluted earnings per share, on a weighted-average basis, as their inclusion was dilutive. The remaining stock options and shares of restricted stock and PSUs are antidilutive, and as such, they were properly excluded.

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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 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=64863997&loc=d3e1278-109256 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64863997&loc=d3e1252-109256 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 55 -Paragraph 52 -URI http://asc.fasb.org/extlink&oid=65016374&loc=d3e4984-109258 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.21) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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