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Quarterly Financial Information (Tables) | 12 Months Ended
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Dec. 31, 2019
Selected Quarterly Financial Information [Abstract] |
Schedule of Quarterly Financial Information | A summary of our unaudited quarterly financial information for 2019 and 2018 is provided below.
|  | Quarter
(In thousands, except per share data) |  | First |  | Second |  | Third |  | Fourth |  | Total
2019 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  | $ | 990,782 |  |  | $ | 1,060,666 |  |  | $ | 1,048,457 |  |  | $ | 1,009,206 |  |  | $ | 4,109,111 |
Operating income |  |  | 178,426 |  |  |  | 234,489 |  |  |  | 217,527 |  |  |  | 188,264 |  |  |  | 818,706 |
Net income |  |  | 133,323 |  |  |  | 174,072 |  |  |  | 164,099 |  |  |  | 144,024 |  |  |  | 615,518 |
Earnings per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic |  |  | 1.65 |  |  |  | 2.16 |  |  |  | 2.05 |  |  |  | 1.81 |  |  |  | 7.67 |
Diluted |  |  | 1.64 |  |  |  | 2.16 |  |  |  | 2.05 |  |  |  | 1.80 |  |  |  | 7.66 |
Cash dividends declared |  |  | 0.17 |  |  |  | 0.17 |  |  |  | 0.17 |  |  |  | 0.17 |  |  |  | 0.68 |
2018 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue |  | $ | 925,020 |  |  | $ | 1,033,498 |  |  | $ | 1,058,233 |  |  | $ | 1,026,944 |  |  | $ | 4,043,695 |
Operating income |  |  | 149,340 |  |  |  | 220,481 |  |  |  | 228,385 |  |  |  | 218,845 |  |  |  | 817,051 |
Net income |  |  | 109,333 |  |  |  | 163,434 |  |  |  | 173,442 |  |  |  | 159,459 |  |  |  | 605,668 |
Earnings per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic |  |  | 1.33 |  |  |  | 1.99 |  |  |  | 2.12 |  |  |  | 1.96 |  |  |  | 7.39 |
Diluted |  |  | 1.33 |  |  |  | 1.99 |  |  |  | 2.12 |  |  |  | 1.95 |  |  |  | 7.38 |
Cash dividends declared |  |  | 0.13 |  |  |  | 0.13 |  |  |  | 0.13 |  |  |  | 0.13 |  |  |  | 0.52 |

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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/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=118952077&loc=d3e1280-108306 + Details
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