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Earnings Per Share (Tables) | 12 Months Ended
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Dec. 31, 2015
Earnings Per Share [Abstract] |
Schedule of Reconciliation of the Numerator and Denominator used in the Calculation of Basic and Diluted Earnings per Share | The following is a reconciliation of the numerator and denominator used in the calculation of basic and diluted earnings per share available to common stockholders.
|  | For the Years Ended December 31,
|  | 2013 |  | 2014 |  | 2015
Numerator |  |  |  |  |  |
Net income (controlling interest) |  | $ | 360.5 |  |  | $ | 452.1 |  |  | $ | 516.0 |
Interest expense on convertible securities, net of taxes |  | 10.5 |  |  | 15.2 |  |  | 15.3 |
Net income (controlling interest), as adjusted |  | $ | 371.0 |  |  | $ | 467.3 |  |  | $ | 531.3 |
Denominator |  |  |  |  |  |  |  |  |
Average shares outstanding (basic) |  | 53.1 |  |  | 55.0 |  |  | 54.3 |
Effect of dilutive instruments: |  |  |  |  |  |  |  |  |
Stock options and other awards |  | 1.3 |  |  | 1.2 |  |  | 0.7 |
Forward sale |  | 0.3 |  |  | 0.0 |  |  | — |
Junior convertible securities |  | 2.0 |  |  | 2.2 |  |  | 2.2 |
Average shares outstanding (diluted) |  | 56.7 |  |  | 58.4 |  |  | 57.2 |
Diluted Earnings per Share Calculations Excluding the Anti-dilutive Effect of Shares | The diluted earnings per share calculations in the table above excluded the anti-dilutive effect of the following shares:
| For the Years Ended December 31,
| 2013 |  | 2014 |  | 2015
Stock options and other awards | 0.1 |  |  | 0.0 |  |  | 0.0 |
Senior convertible securities | 2.1 |  |  | — |  |  | — |
Junior convertible securities | 2.2 |  |  | 0.4 |  |  | — |

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- Definition Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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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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