Share-Based Employee Compensation Plans and Other Compensation and Benefit Plans (Summary of Shares Authorized and Available for Future Issuance Under Benefit and Compensation Plans) (Details) In Thousands, unless otherwise specified	Dec. 31, 2011
Employee Stock Option [Member]
Shares authorized for issuance under compensation and benefit plans	34,000
Shares available for future issuance under compensation and benefit plans	7,703
Director [Member]
Shares authorized for issuance under compensation and benefit plans	1,000
Shares available for future issuance under compensation and benefit plans	277
Restricted Stock [Member] | Employee Stock [Member]
Shares authorized for issuance under compensation and benefit plans	650
Shares available for future issuance under compensation and benefit plans	390
Employee Stock Purchase Plan [Member]
Shares authorized for issuance under compensation and benefit plans	4,250
Shares available for future issuance under compensation and benefit plans	1,116
Profit Sharing And Savings Plan [Member]
Shares authorized for issuance under compensation and benefit plans	4,200
Shares available for future issuance under compensation and benefit plans	349