Earnings Per Share (Tables)

9 Months Ended

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 plans1	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.	—		—		—		—