Earnings Per Share

6 Months Ended

Jun. 30, 2018

Earnings Per Share [Abstract]

Earnings Per Share [Text Block]

Earnings Per Share

(In thousands, except share and per share amounts)	Three Months Ended June 30,				Six Months Ended June 30,
	2018		2017		2018		2017
Numerator:
Net income attributable to BOK Financial Corp. shareholders	$	114,372	$	88,147	$	219,934	$	176,503
Less: Earnings allocated to participating securities	956		926		1,978		1,929
Numerator for basic earnings per share – income available to common shareholders	113,416		87,221		217,956		174,574
Effect of reallocating undistributed earnings of participating securities	1		1		1		1
Numerator for diluted earnings per share – income available to common shareholders	$	113,417	$	87,222	$	217,957	$	174,575
Denominator:
Weighted average shares outstanding	65,448,035		65,416,274		65,463,671		65,436,909
Less:  Participating securities included in weighted average shares outstanding	546,060		686,522		589,104		714,165
Denominator for basic earnings per common share	64,901,975		64,729,752		64,874,567		64,722,744
Dilutive effect of employee stock compensation plans1	35,251		63,382		37,985		65,578
Denominator for diluted earnings per common share	64,937,226		64,793,134		64,912,552		64,788,322
Basic earnings per share	$	1.75	$	1.35	$	3.36	$	2.70
Diluted earnings per share	$	1.75	$	1.35	$	3.36	$	2.69
1  Excludes employee stock options with exercise prices greater than current market price.	—		—		—		—