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Earnings Per Share (Tables) | 3 Months Ended
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Mar. 31, 2024
Earnings Per Share [Abstract] |
Schedule of Basic and Diluted Earnings (Loss) 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,
|  | 2023 |  | 2024
Numerator |  |  |  |
Net income (controlling interest) |  | $134.5 |  | $149.8
Income from hypothetical settlement of Redeemable non-controlling interests, net of taxes |  | 0.7 |  | 13.0
Interest expense on junior convertible securities, net of taxes |  | 3.4 |  | 3.4
Net income (controlling interest), as adjusted |  | $138.6 |  | $166.2
Denominator |  |  |  |
Average shares outstanding (basic) |  | 35.9 |  | 32.8
Effect of dilutive instruments: |  |  |  |
Stock options and restricted stock units |  | 2.0 |  | 2.0
Hypothetical issuance of shares to settle Redeemable non-controlling interests |  | 0.3 |  | 3.6
Junior convertible securities |  | 1.7 |  | 1.7
Average shares outstanding (diluted) |  | 39.9 |  | 40.1
Schedule of Shares Excluded from Calculation of Basic and Diluted Earnings (Loss) Per Share | The following is a summary of items excluded from the denominator in the table above:
|  | For the Three Months Ended March 31,
|  | 2023 |  | 2024
Stock options and restricted stock units |  | 0.4 |  | 0.4
Shares issuable to settle Redeemable non-controlling interests |  | 4.2 |  | 0.5

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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://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-1 + 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/2009/role/commonPracticeRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-1 + Details
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