Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2011

Earnings Per Share [Abstract]

Earnings Per Share

	Three Months Ended September 30,						Nine Months Ended September 30,
	2011			2010			2011			2010
Numerator:
Net income attributable to BOK Financial Corp.	$	85,101		$	64,267		$	218,882		$	187,922
Earnings allocated to participating securities		(680	)		(436	)		(1,700	)		(1,203	)
Numerator for basic earnings per share – income available to common shareholders		84,421			63,831			217,182			186,719
Effect of reallocating undistributed earnings of participating securities		2			1			5			3
Numerator for diluted earnings per share – income available to common shareholders	$	84,423		$	63,832		$	217,187		$	186,722
Denominator:
Weighted average shares outstanding		68,372,082			68,087,122			68,403,652			68,041,442
Less:  Participating securities included in weighted average shares outstanding		(544,491	)		(461,744	)		(527,777	)		(433,165	)
Denominator for basic earnings per common share		67,827,591			67,625,378			67,875,875			67,608,277
Dilutive effect of employee stock compensation plans1		209,828			139,966			251,879			204,159
Denominator for diluted earnings per common share		68,037,419			67,765,344			68,127,754			67,812,436
Basic earnings per share	$	1.24		$	0.94		$	3.20		$	2.76
Diluted earnings per share	$	1.24		$	0.94		$	3.19		$	2.75
1Excludes employee stock options with exercise prices greater than current market price.		773,080			2,357,075			771,922			1,464,694