Earnings Per Share (Tables)

6 Months Ended

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 plans1	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.	—		—		—		—