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Selected Quarterly Financial Data (Unaudited) | 12 Months Ended
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Dec. 31, 2016
Quarterly Financial Information Disclosure [Abstract] |
Selected Quarterly Financial Data (Unaudited) | Selected Quarterly Financial Data (Unaudited) The following is a summary of the quarterly results of operations of the Company for the years ended December 31, 2015 and 2016.
|  | 2015
|  | First Quarter |  | Second Quarter |  | Third Quarter |  | Fourth Quarter
Revenue |  | $ | 635.0 |  |  | $ | 646.6 |  |  | $ | 613.1 |  |  | $ | 589.8 |
Operating income |  | 231.4 |  |  | 195.2 |  |  | 215.2 |  |  | 193.2 |
Income before income taxes |  | 290.3 |  |  | 262.0 |  |  | 249.1 |  |  | 289.2 |
Net income (controlling interest) |  | 126.7 |  |  | 127.6 |  |  | 107.7 |  |  | 147.5 |
Earnings per share (diluted) |  | $ | 2.26 |  |  | $ | 2.29 |  |  | $ | 1.96 |  |  | $ | 2.67 |
|  | 2016
|  | First Quarter |  | Second Quarter |  | Third Quarter |  | Fourth Quarter
Revenue |  | $ | 545.4 |  |  | $ | 554.1 |  |  | $ | 544.7 |  |  | $ | 550.3 |
Operating income |  | 178.8 |  |  | 181.8 |  |  | 171.0 |  |  | 173.8 |
Income before income taxes |  | 230.5 |  |  | 235.9 |  |  | 226.2 |  |  | 281.9 |
Net income (controlling interest) |  | 104.0 |  |  | 108.3 |  |  | 110.2 |  |  | 150.2 |
Earnings per share (diluted) |  | $ | 1.90 |  |  | $ | 1.98 |  |  | $ | 2.02 |  |  | $ | 2.67 |

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- Definition The entire disclosure for quarterly financial data. Includes, but is not limited to, tabular presentation of financial information for fiscal quarters, effect of year-end adjustments, and an explanation of matters or transactions that affect comparability of the information. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=68076893&loc=d3e1570-108306 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 45 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=68064558&loc=d3e765-108305 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=68064558&loc=d3e725-108305 + Details
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