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Earnings Per Share Data ("EPS") and Stock Based Compensation (Tables) | 9 Months Ended
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Sep. 30, 2018
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] |
Computation of Basic and Diluted Earnings per Share for Classes A, B, C and D Common Stockholders | The following table sets forth the computation of basic and diluted earnings per share for classes A, B, C and D common stockholders for the periods indicated (in thousands, except per share data):
|  | Three months ended September 30, |  |  | Nine months ended September 30, |
|  | 2018 |  |  | 2017 |  |  | 2018 |  |  | 2017 |
Basic and Diluted: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income attributable to UHS |  | $ | 171,746 |  |  | $ | 141,245 |  |  | $ | 621,630 |  |  | $ | 532,694 |
Less: Net income attributable to unvested restricted share grants |  |  | (317 | ) |  |  | (81 | ) |  |  | (813 | ) |  |  | (257 | )
Net income attributable to UHS – basic and diluted |  | $ | 171,429 |  |  | $ | 141,164 |  |  | $ | 620,817 |  |  | $ | 532,437 |
Weighted average number of common shares - basic |  |  | 92,849 |  |  |  | 95,246 |  |  |  | 93,639 |  |  |  | 96,026 |
Net effect of dilutive stock options and grants based on the treasury stock method |  |  | 481 |  |  |  | 731 |  |  |  | 459 |  |  |  | 771 |
Weighted average number of common shares and equivalents - diluted |  |  | 93,330 |  |  |  | 95,977 |  |  |  | 94,098 |  |  |  | 96,797 |
Earnings per basic share attributable to UHS: |  | $ | 1.85 |  |  | $ | 1.48 |  |  | $ | 6.63 |  |  | $ | 5.54 |
Earnings per diluted share attributable to UHS: |  | $ | 1.84 |  |  | $ | 1.47 |  |  | $ | 6.60 |  |  | $ | 5.50 |

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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