Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2013

Earnings Per Share [Abstract]

Earnings Per Share [Table Text Block]

	Year Ended
	2013		2012		2011
Numerator:
Net income attributable to BOK Financial Corp. shareholders	$	316,609	$	351,191	$	285,875
Less: Earnings allocated to participating securities	3,388		2,541		2,214
Numerator for basic earnings per share – income available to common shareholders	313,221		348,650		283,661
Effect of reallocating undistributed earnings of participating securities	7		6		6
Numerator for diluted earnings per share – income available to common shareholders	$	313,228	$	348,656	$	283,667
Denominator:
Weighted average shares outstanding	68,719,069		68,221,013		68,313,898
Less:  Participating securities included in weighted average shares outstanding	730,172		536,970		526,222
Denominator for basic earnings per common share	67,988,897		67,684,043		67,787,676
Dilutive effect of employee stock compensation plans1	216,622		280,897		251,087
Denominator for diluted earnings per common share	68,205,519		67,964,940		68,038,763
Basic earnings per share	$	4.61	$	5.15	$	4.18
Diluted earnings per share	$	4.59	$	5.13	$	4.17
1  Excludes employee stock options with exercise prices greater than current market price.	—		224,653		769,041