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Earnings Per Share Data ("EPS") and Stock Based Compensation (Tables) | 6 Months Ended
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Jun. 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 June 30, |  |  | Six months ended June 30, |
|  | 2018 |  |  | 2017 |  |  | 2018 |  |  | 2017 |
Basic and Diluted: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income attributable to UHS |  | $ | 226,052 |  |  | $ | 185,394 |  |  | $ | 449,884 |  |  | $ | 391,449 |
Less: Net income attributable to unvested restricted share grants |  |  | (392 | ) |  |  | (82 | ) |  |  | (496 | ) |  |  | (176 | )
Net income attributable to UHS – basic and diluted |  | $ | 225,660 |  |  | $ | 185,312 |  |  | $ | 449,388 |  |  | $ | 391,273 |
Weighted average number of common shares - basic |  |  | 93,842 |  |  |  | 96,247 |  |  |  | 94,034 |  |  |  | 96,416 |
Net effect of dilutive stock options and grants based on the treasury stock method |  |  | 439 |  |  |  | 795 |  |  |  | 448 |  |  |  | 791 |
Weighted average number of common shares and equivalents - diluted |  |  | 94,281 |  |  |  | 97,042 |  |  |  | 94,482 |  |  |  | 97,207 |
Earnings per basic share attributable to UHS: |  | $ | 2.40 |  |  | $ | 1.93 |  |  | $ | 4.78 |  |  | $ | 4.06 |
Earnings per diluted share attributable to UHS: |  | $ | 2.39 |  |  | $ | 1.91 |  |  | $ | 4.76 |  |  | $ | 4.03 |

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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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