v2.3.0.11
Subsequent Events (Details) (USD $)
6 Months Ended 12 Months Ended 0 Months Ended
Dec. 31, 2011
Dec. 31, 2011
Jul. 31, 2011
Issuance Of Debt [Member]
Jul. 19, 2011
Dividend Declared [Member]
Quarterly dividend per common share       $ 0.05
Increase (decrease) in long-term borrowings (net of repayments)     $ 1,500,000,000  
Dividend is payable to common shareholders, date Aug. 15, 2011
Dividends payable, date of record Jun. 29, 2011
Impact of foreign legislation, expected bank levy expense   $ 125,000,000