Loans and Leases Classified by Primary Purpose (Detail) (USD $) In Millions	Jun. 30, 2011		Dec. 31, 2010		Jun. 30, 2010
Loans and leases held for sale:
Commercial and industrial loans	$ 56		$ 83		$ 2
Commercial mortgage loans	98		147		88
Commercial construction loans	27		63		77
Residential mortgage loans	989		1,901		1,965
Other consumer loans and leases	15		22		18
Total loans and leases held for sale	1,185		2,216		2,150
Portfolio loans and leases:
Commercial and industrial loans	28,099		27,191		26,008
Commercial mortgage loans	10,233	[1]	10,845	[1]	11,481	[1]
Commercial construction loans	1,778		2,048		2,965
Commercial leases	3,326		3,378		3,271
Total commercial loans and leases	43,436		43,462		43,725
Residential mortgage loans	9,849	[2]	8,956	[2]	7,707	[2]
Home equity	11,048	[1]	11,513	[1]	11,987	[1]
Automobile loans	11,315	[1]	10,983	[1]	10,285	[1]
Credit card	1,856		1,896		1,841
Other consumer loans and leases	463		681		687
Total consumer loans and leases	34,531		34,029		32,507
Portfolio loans and leases	$ 77,967		$ 77,491		$ 76,232

[1] Includes $42, $52, and $74 of cash, $7, $7 and $7 of other short-term investments, $29, $29 and $0 of commercial mortgage loans, $231, $241 and $252 of home equity loans, $424, $648 and $911 of automobile loans, ($11), ($14) and ($16) of ALLL, $4, $7 and $7 of other assets, $8, $12 and $19 of other liabilities and $365, $692 and $996 of long-term debt from consolidated VIEs that are included in their respective captions above at June 30, 2011, December 31, 2010 and June 30, 2010, respectively. See Note 8.

[2] Includes $59, $46 and $41 of residential mortgage loans measured at fair value at June 30, 2011, December 31, 2010 and June 30, 2010, respectively.