Accounting Changes	9 Months Ended
Accounting Changes	Sep. 30, 2011
Accounting Changes [Abstract]
Accounting Changes	Note 2 Accounting Changes Troubled Debt Restructurings On July 1, 2011, the Company adopted accounting guidance issued by the Financial Accounting Standards Board related to identifying and disclosing troubled debt restructurings (“TDRs”), applicable to modifications occurring on or after January 1, 2011. This guidance provides clarification in determining whether a creditor has granted a concession and whether a debtor is experiencing financial difficulties for the purpose of determining whether a restructuring constitutes a TDR. The adoption of this guidance resulted in $1.4 billion of additional loan modifications considered to be TDRs which the Company had not previously considered to be impaired. The allowance for credit losses had previously been measured under a collective allowance for credit losses methodology. Under the new accounting guidance, the allowance for credit losses associated with these loans as of September 30, 2011, was $94 million. The adoption of this guidance did not have a material impact on the Company’s total allowance for credit losses.

The entire disclosure for reporting accounting changes and error corrections. It includes the conveyance of information necessary for a user of the Company's financial information to understand all aspects and required disclosure information concerning all changes and error corrections reported in the Company's financial statements for the period.