Subsequent Events (Details) (USD $)
In Millions, except Share data, unless otherwise specified |
6 Months Ended | 24 Months Ended | 27 Months Ended | 30 Months Ended | 1 Months Ended | 31 Months Ended | |
---|---|---|---|---|---|---|---|
Jun. 30, 2012
|
Jul. 09, 2012
|
Mar. 31, 2012
|
Jun. 30, 2012
|
Aug. 03, 2012
Stock Repurchase Plan
|
Aug. 03, 2012
Stock Repurchase Plan
|
Aug. 01, 2012
Dividend Declared [Member]
|
|
Subsequent Event [Line Items] | |||||||
Total repurchase amount authorized | $ 500 | $ 680 | |||||
Acquisition of treasury stock (shares) | 18,744,363 | 52,669,168 | 1,734,000 | 54,403,168 | |||
Treasury Stock Value Acquired Cost Method Excluding Commissions | $ 230 | $ 608 | $ 22 | $ 630 | |||
Dividends Payable, Amount Per Share | $ 0.04 | ||||||
Treasury Stock Acquired Average Cost Per Share | $ 12.31 | $ 11.57 | $ 11.60 |