XML 49 R39.htm IDEA: XBRL DOCUMENT

Stock-Based Compensation (Details) (USD $) In Millions	3 Months Ended		6 Months Ended
Stock-Based Compensation (Details) (USD $) In Millions	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Stock-based compensation expense
Stock- based compensation expense	$ 17	$ 14	$ 42	$ 30
Non-cash compensation expense	17	14	42	30
Outperform Stock Options
Stock-based compensation expense
Stock- based compensation expense	2	3	4	6
Number of outperform stock option units outstanding as of the balance sheet date (in shares)	17		17
Restricted Stock Units and Shares
Stock-based compensation expense
Stock- based compensation expense	3	2	7	8
Number of outstanding nonvested shares (in shares)	25		25
401(k) Match Expense
Stock-based compensation expense
Stock- based compensation expense	4	4	7	6
Restricted Stock Unit Bonus Grant
Stock-based compensation expense
Stock- based compensation expense	$ 8	$ 5	$ 24	$ 10

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

- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ References+ Details

- Definition

The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options.

+ References+ Details