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Quarterly Operating Results (unaudited) (Tables) | 12 Months Ended
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Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract] |
Schedule of Quarterly Operating Results | Quarterly operating results for 2017 and 2016 were as follows (in millions, except per share data):
|  | 1st |  |  | 2nd |  |  | 3rd |  |  | 4th |
2017 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total revenues |  | $ | 1,412.7 |  |  | $ | 1,563.4 |  |  | $ | 1,584.5 |  |  | $ | 1,599.0 |
Total expenses |  |  | 1,360.4 |  |  |  | 1,416.4 |  |  |  | 1,487.8 |  |  |  | 1,516.9 |
Earnings before income taxes |  | $ | 52.3 |  |  | $ | 147.0 |  |  | $ | 96.7 |  |  | $ | 82.1 |
Net earnings attributable to controlling interests |  | $ | 55.7 |  |  | $ | 171.9 |  |  | $ | 130.4 |  |  | $ | 105.1 |
Basic net earnings per share |  | $ | 0.31 |  |  | $ | 0.96 |  |  | $ | 0.72 |  |  | $ | 0.58 |
Diluted net earnings per share |  | $ | 0.31 |  |  | $ | 0.95 |  |  | $ | 0.71 |  |  | $ | 0.57 |
2016 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total revenues |  | $ | 1,300.4 |  |  | $ | 1,427.1 |  |  | $ | 1,482.3 |  |  | $ | 1,385.0 |
Total expenses |  |  | 1,244.7 |  |  |  | 1,289.6 |  |  |  | 1,387.4 |  |  |  | 1,316.2 |
Earnings before income taxes |  | $ | 55.7 |  |  | $ | 137.5 |  |  | $ | 94.9 |  |  | $ | 68.8 |
Net earnings attributable to controlling interests |  | $ | 46.5 |  |  | $ | 150.0 |  |  | $ | 122.8 |  |  | $ | 95.1 |
Basic net earnings per share |  | $ | 0.26 |  |  | $ | 0.85 |  |  | $ | 0.69 |  |  | $ | 0.53 |
Diluted net earnings per share |  | $ | 0.26 |  |  | $ | 0.84 |  |  | $ | 0.69 |  |  | $ | 0.53 |

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- Definition Tabular disclosure of quarterly financial data. Includes, but is not limited to, financial information for fiscal quarters, cumulative effect of a change in accounting principle and earnings per share data. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a)-(j) -URI http://asc.fasb.org/extlink&oid=84173487&loc=d3e1280-108306 + Details
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