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Earnings Per Share (Tables) | 9 Months Ended
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Sep. 30, 2019
Earnings Per Share [Abstract] |
Earnings Per Share [Table Text Block] |
(In thousands, except share and per share amounts) |  | Three Months Ended September 30, |  | Nine Months Ended September 30,
|  | 2019 |  | 2018 |  | 2019 |  | 2018
Numerator: |  |  |  |  |  |  |  |
Net income attributable to BOK Financial Corp. shareholders |  | $ | 142,231 |  |  | $ | 117,256 |  |  | $ | 390,406 |  |  | $ | 337,190 |
Less: Earnings allocated to participating securities |  | 875 |  |  | 963 |  |  | 2,553 |  |  | 2,940 |
Numerator for basic earnings per share – income available to common shareholders |  | 141,356 |  |  | 116,293 |  |  | 387,853 |  |  | 334,250 |
Effect of reallocating undistributed earnings of participating securities |  | 1 |  |  | 1 |  |  | 1 |  |  | 1 |
Numerator for diluted earnings per share – income available to common shareholders |  | $ | 141,357 |  |  | $ | 116,294 |  |  | $ | 387,854 |  |  | $ | 334,251 |
Denominator: |  |  |  |  |  |  |  |  |  |  |  |
Weighted average shares outstanding |  | 71,033,405 |  |  | 65,438,849 |  |  | 71,425,855 |  |  | 65,455,306 |
Less: Participating securities included in weighted average shares outstanding |  | 437,098 |  |  | 537,754 |  |  | 472,311 |  |  | 571,987 |
Denominator for basic earnings per common share |  | 70,596,307 |  |  | 64,901,095 |  |  | 70,953,544 |  |  | 64,883,319 |
Dilutive effect of employee stock compensation plans 1 |  | 13,617 |  |  | 33,256 |  |  | 15,301 |  |  | 36,409 |
Denominator for diluted earnings per common share |  | 70,609,924 |  |  | 64,934,351 |  |  | 70,968,845 |  |  | 64,919,728 |
Basic earnings per share |  | $ | 2.00 |  |  | $ | 1.79 |  |  | $ | 5.47 |  |  | $ | 5.15 |
Diluted earnings per share |  | $ | 2.00 |  |  | $ | 1.79 |  |  | $ | 5.47 |  |  | $ | 5.15 |
1 Excludes employee stock options with exercise prices greater than current market price. |  | — |  |  | — |  |  | — |  |  | — |

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- References No definition available. + Details
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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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