Earnings Per Common Share Computation

12 Months Ended

Dec. 31, 2010

Earnings Per Common Share Computation [Abstract]

Earnings Per Common Share Computation

14. EARNINGS PER COMMON SHARE COMPUTATION

Detail supporting the computation of basic and diluted earnings per common share was as follows for the years ended December 31, 2010, 2009 and 2008:

	2010		2009		2008
	(in thousands, except per share results)
Net income available for common stockholders	$	1,099,390	$	1,039,675	$	647,154
Weighted-average outstanding shares of common stock used to compute basic earnings per common share		167,782		167,364		167,172
Dilutive effect of:
Employee stock options		676		677		1,173
Restricted stock awards		1,340		1,030		842
Shares used to compute diluted earnings per common share		169,798		169,071		169,187
Basic earnings per common share	$	6.55	$	6.21	$	3.87
Diluted earnings per common share	$	6.47	$	6.15	$	3.83

Restricted stock awards and stock options to purchase 3,819,511 shares in 2010, 5,675,241 shares in 2009, and 3,243,933 shares in 2008 were anti-dilutive and, therefore, were not included in the computations of diluted earnings per common share.