XML 37 R40.htm IDEA: XBRL DOCUMENT

Stock-Based Compensation (Details) (USD $) In Millions	3 Months Ended		9 Months Ended
Stock-Based Compensation (Details) (USD $) In Millions	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Stock-based compensation expense
Stock- based compensation expense	$ 26	$ 20	$ 68	$ 50
Capitalized Noncash Compensation	0	0	0	0
Non-cash compensation expense	26	20	68	50
Outperform Stock Options
Stock-based compensation expense
Stock- based compensation expense	3	2	7	8
Number of outperform stock option units outstanding as of the balance sheet date (in shares)	1		1
Restricted Stock Units and Shares
Stock-based compensation expense
Stock- based compensation expense	11	6	18	14
Number of outstanding nonvested shares (in shares)	2		2
401(k) Match Expense
Stock-based compensation expense
Stock- based compensation expense	3	3	10	9
Restricted Stock Unit Bonus Grant
Stock-based compensation expense
Stock- based compensation expense	$ 9	$ 9	$ 33	$ 19

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References+ Details