Stockholders' Equity (Tables)

9 Months Ended

Sep. 30, 2011

Stockholders' Equity

Authorized And Issued Shares

	Par Value		September 30, 2011		December 31, 2010
Preferred Stock	$	.01/share
Authorized				5,000,000		5,000,000
Shares issued				0		0
Common Stock	$	.01/share
Authorized				400,000,000		400,000,000
Shares issued				295,203,874		294,861,424

Dividends Paid Previously And Declared For Future Payment

	2011		2010
First quarter	$	0.25		0.20
Second quarter		0.13		0.00
Third quarter		0.13		0.21
Fourth quarter		0.14		0.21
Total	$	0.65		0.62

Stock Options Granted

	Options granted		Option exercise (strike) price		Closing stock  price on date of grant
							September 30, 2011
							Options		Options
Date of grant							outstanding		vested
April 19, 2011		410,000	$	35.00	$	31.78		410,000		0
April 20, 2010		530,000	$	30.00	$	27.13		400,000		0
April 21, 2009		790,000	$	27.00	$	17.61		600,000		0
April 15, 2008		550,000	$	27.00	$	24.35		360,000		0
April 17, 2007		4,380,000	$	22.50	$	20.15		3,432,550		1,725,550

Fair Value Assumptions For Options Granted

Date of grant	Risk-free interest rate			Expected life of option in years		Expected dividend yield			Expected stock volatility			Estimated fair value of stock option
April 19, 2011		2.1	%		5.00		1.6	%		39.33	%	$	11.20
April 20, 2010		2.6	%		5.00		1.5	%		39.10	%	$	8.14
April 21, 2009		1.9	%		5.00		1.0	%		38.80	%	$	3.64
April 15, 2008		2.7	%		5.00		1.0	%		30.93	%	$	7.75
April 17, 2007		4.6	%		4.85		1.0	%		31.59	%	$	5.63

Reconciliation Of Denominators Used In The Computation Of Basic And Diluted Earnings Per Share

	Nine-month period				Three-month period
Reconciliation	2011		2010		2011		2010
Basic-weighted average shares outstanding		294,994,553		294,861,424		295,144,175		294,861,424
Weighted shares assumed upon exercise of stock options		768,209		0		750,788		0
Diluted-weighted average shares outstanding		295,762,762		294,861,424		295,894,963		294,861,424

Summary Of Anti-Dilutive Options Excluded

	Nine-month period				Three-month period
Summary of anti-dilutive options excluded	2011		2010		2011		2010
Options to purchase shares of common stock		668,791		5,319,890		818,261		5,466,413
Weighted-average exercise prices of anti-dilutive options	$	31.85	$	23.90	$	32.51	$	24.12