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Earnings Per Share (Tables) | 3 Months Ended
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Mar. 31, 2017
Earnings Per Share [Abstract] |
Schedule 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 Three Months Ended March 31,
| 2016 |  | 2017
Numerator |  |  |
Net income (controlling interest) | $ | 104.0 |  |  | $ | 122.5 |
Interest expense on convertible securities, net of taxes | 3.8 |  |  | 3.8 |
Net income (controlling interest), as adjusted | $ | 107.8 |  |  | $ | 126.3 |
Denominator |  |  |
Average shares outstanding (basic) | 54.0 |  |  | 56.7 |
Effect of dilutive instruments: |  |  |
Stock options and restricted stock | 0.4 |  |  | 0.3 |
Junior convertible securities | 2.2 |  |  | 2.2 |
Average shares outstanding (diluted) | 56.6 |  |  | 59.2 |
Schedule of Shares Excluded from Calculation of Basic and Diluted Earnings Per Share | Average shares outstanding (diluted) in the table above exclude the anti-dilutive effect of the following shares:
| For the Three Months Ended March 31,
| 2016 |  | 2017
Stock options and restricted stock units | 0.7 |  |  | 0.2 |

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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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