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EARNINGS PER COMMON SHARE COMPUTATION (Tables) | 9 Months Ended
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Sep. 30, 2022
Earnings Per Share [Abstract] |
Schedule of Details Supporting Computation of Earnings Per Share | Detail supporting the computation of basic and diluted earnings per common share was as follows for the three and nine months ended September 30, 2022 and 2021:
| Three months ended September 30, |  | Nine months ended September 30,
| 2022 |  | 2021 |  | 2022 |  | 2021
| (dollars in millions, except per common share results; number of shares in thousands)
Net income available for common stockholders | $ | 1,195 |  |  | $ | 1,531 |  |  | $ | 2,821 |  |  | $ | 2,947 |
Weighted average outstanding shares of common stock used to compute basic earnings per common share | 126,572 |  |  | 128,518 |  |  | 126,678 |  |  | 128,714 |
Dilutive effect of: |  |  |  |  |  |  |
Employee stock options | 61 |  |  | 68 |  |  | 50 |  |  | 65 |
Restricted stock | 723 |  |  | 669 |  |  | 577 |  |  | 619 |
Shares used to compute diluted earnings per common share | 127,356 |  |  | 129,255 |  |  | 127,305 |  |  | 129,398 |
Basic earnings per common share | $ | 9.45 |  |  | $ | 11.91 |  |  | $ | 22.27 |  |  | $ | 22.90 |
Diluted earnings per common share | $ | 9.39 |  |  | $ | 11.84 |  |  | $ | 22.16 |  |  | $ | 22.77 |
Number of antidilutive stock options and restricted stock excluded from computation | 78 |  |  | 136 |  |  | 267 |  |  | 256 |
For additional information regarding earnings per common share, refer to Note 2 to the audited Consolidated Financial Statements included in Part II, Item 8, "Financial Statements and Supplementary Data" in our 2021 Form 10-K.

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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://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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