Loans and Leases (Loans that Continue to Accrued Interest Under Terms of Restructuring) (Details) (USD $) In Millions	Jun. 30, 2011		Dec. 31, 2010
Commercial and industrial	$ 34,166		$ 34,050
Commercial real estate-other	11,134		11,439
Commercial real estate-residential ADC	2,689	[1]	3,397	[1]
Direct retail lending	13,679		13,749
Sales finance	7,236		7,050
Revolving credit	2,091		2,127
Residential mortgage	18,372		17,550
Specialized lending	8,464		7,953
Nonperforming restructurings	381	[2],[3]	479	[2],[3]
Total restructurings	1,559	[2],[3],[4],[5],[6]	1,955	[2],[3],[4],[5],[6]
Nonperforming restructurings included in loans held for sale	20		110
Restructured mortgage loans government guaranteed totaling included in loans held for sale	24		14
Restructured mortgage loans government guaranteed	160		115
Allowance for loan and lease losses attributable to restructured loans	321		324
Performing Restructurings [Member]
Commercial and industrial	100		205
Commercial real estate-other	153		280
Commercial real estate-residential ADC	105		172
Direct retail lending	143		141
Sales finance	6		5
Revolving credit	62		62
Residential mortgage	570	[5],[6]	585	[5],[6]
Specialized lending	39		26
Total performing restructurings	$ 1,178	[5],[6]	$ 1,476	[5],[6]

[1] Commercial real estate—residential ADC represents residential acquisition, development and construction loans.

[2] Includes approximately $20 million and $110 million of nonperforming restructurings included in loans held for sale at June 30, 2011 and December 31, 2010, respectively.

[3] Nonperforming restructurings are included in nonaccrual loan disclosures.

[4] All restructurings are considered impaired. The allowance for loan and lease losses attributable to these restructured loans totaled $321 million and $324 million at June 30, 2011 and December 31, 2010, respectively.

[5] Excludes restructured mortgage loans held for investment that are government guaranteed totaling $160 million and $115 million at June 30, 2011 and December 31, 2010, respectively.

[6] Excludes restructured mortgage loans held for sale that are government guaranteed totaling $24 million and $14 million at June 30, 2011 and December 31, 2010, respectively.