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Earnings Per Share (Tables) | 6 Months Ended
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Jun. 30, 2019
Earnings Per Share [Abstract] |
Earnings Per Share [Table Text Block] |
(In thousands, except share and per share amounts) |  | Three Months Ended June 30, |  | Six Months Ended June 30,
|  | 2019 |  | 2018 |  | 2019 |  | 2018
Numerator: |  |  |  |  |  |  |  |
Net income attributable to BOK Financial Corp. shareholders |  | $ | 137,563 |  |  | $ | 114,372 |  |  | $ | 248,175 |  |  | $ | 219,934 |
Less: Earnings allocated to participating securities |  | 850 |  |  | 956 |  |  | 1,678 |  |  | 1,978 |
Numerator for basic earnings per share – income available to common shareholders |  | 136,713 |  |  | 113,416 |  |  | 246,497 |  |  | 217,956 |
Effect of reallocating undistributed earnings of participating securities |  | — |  |  | 1 |  |  | — |  |  | 1 |
Numerator for diluted earnings per share – income available to common shareholders |  | $ | 136,713 |  |  | $ | 113,417 |  |  | $ | 246,497 |  |  | $ | 217,957 |
Denominator: |  |  |  |  |  |  |  |  |  |  |  |
Weighted average shares outstanding |  | 71,327,928 |  |  | 65,448,035 |  |  | 71,625,332 |  |  | 65,463,671 |
Less: Participating securities included in weighted average shares outstanding |  | 440,865 |  |  | 546,060 |  |  | 489,918 |  |  | 589,104 |
Denominator for basic earnings per common share |  | 70,887,063 |  |  | 64,901,975 |  |  | 71,135,414 |  |  | 64,874,567 |
Dilutive effect of employee stock compensation plans 1 |  | 14,970 |  |  | 35,251 |  |  | 16,144 |  |  | 37,985 |
Denominator for diluted earnings per common share |  | 70,902,033 |  |  | 64,937,226 |  |  | 71,151,558 |  |  | 64,912,552 |
Basic earnings per share |  | $ | 1.93 |  |  | $ | 1.75 |  |  | $ | 3.47 |  |  | $ | 3.36 |
Diluted earnings per share |  | $ | 1.93 |  |  | $ | 1.75 |  |  | $ | 3.46 |  |  | $ | 3.36 |
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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