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Quarterly Financial Data | 12 Months Ended
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Dec. 31, 2020
Quarterly Financial Information Disclosure [Abstract] |
Quarterly Financial Data | QUARTERLY FINANCIAL DATA (unaudited) The following quarterly financial data for the years ended December 31, 2020 and 2019 has been prepared in accordance with GAAP:
(In millions, except per share data) |  | 2020
|  | Quarters Ended
Income Statement Data |  | March 31 |  | June 30 |  | September 30 |  | December 31
Revenue |  | $ | 389.1 |  |  | $ | 406.3 |  |  | $ | 426.5 |  |  | $ | 447.4 |
Income before provision for income taxes |  | (112.8) |  |  | 127.8 |  |  | 318.4 |  |  | 216.1 |
Net income |  | (83.8) |  |  | 96.4 |  |  | 242.1 |  |  | 166.3 |
Net income per share (1): |  |  |  |  |  |  |  |
Basic |  | $ | (4.61) |  |  | $ | 5.40 |  |  | $ | 13.57 |  |  | $ | 9.47 |
Diluted |  | $ | (4.61) |  |  | $ | 5.40 |  |  | $ | 13.56 |  |  | $ | 9.43 |
(In millions, except per share data) |  | 2019
|  | Quarters Ended
Income Statement Data |  | March 31 |  | June 30 |  | September 30 |  | December 31
Revenue |  | $ | 353.8 |  |  | $ | 370.6 |  |  | $ | 378.7 |  |  | $ | 385.9 |
Income before provision for income taxes |  | 206.3 |  |  | 215.3 |  |  | 219.1 |  |  | 215.2 |
Net income |  | 164.4 |  |  | 164.4 |  |  | 165.4 |  |  | 161.9 |
Net income per share (1): |  |  |  |  |  |  |  |
Basic |  | $ | 8.67 |  |  | $ | 8.68 |  |  | $ | 8.73 |  |  | $ | 8.63 |
Diluted |  | $ | 8.65 |  |  | $ | 8.68 |  |  | $ | 8.73 |  |  | $ | 8.60 |
(1)Basic and diluted net income per share are computed independently for each of the quarters presented. Therefore, the sum of quarterly basic and diluted per share information may not equal annual basic and diluted net income per share.

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- References No definition available. + Details
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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -URI http://asc.fasb.org/topic&trid=2126967 + Details
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