Loans and Leases Classified by Primary Purpose (Detail) (USD $) In Millions, unless otherwise specified	Jun. 30, 2014		Dec. 31, 2013
Loans and leases held for sale:
Commercial and industrial loans	$ 65		$ 31
Commercial mortgage loans	2		3
Commercial construction loans	2		2
Commercial leases	5		1
Residential mortgage loans	598		890
Other consumer loans and leases	10		17
Total loans and leases held for sale	682	[1]	944	[1]
Portfolio loans and leases:
Commercial and industrial loans	41,299		39,316
Commercial mortgage loans	7,805	[2]	8,066	[2]
Commercial construction loans	1,424		1,039
Commercial leases	3,567		3,625
Total commercial loans and leases	54,095		52,046
Residential mortgage loans	12,652	[3]	12,680	[3]
Home equity	9,056		9,246
Automobile loans	12,050	[2]	11,984	[2]
Credit card	2,261		2,294
Other consumer loans and leases	370		364
Total consumer loans and leases	36,389		36,568
Portfolio loans and leases	$ 90,484		$ 88,614

[1] Includes $598 and $890 of residential mortgage loans held for sale measured at fair value at June 30, 2014 and December 31, 2013, respectively.

[2] Includes $158 and $49 of cash and due from banks, $48 and $48 of commercial mortgage loans, $3,200 and $1,010 of automobile loans, $(20) and $(15) of ALLL, $32 and $13 of other assets, $6 and $1 of other liabilities, and $3,333 and $1,048 of long-term debt from consolidated VIEs that are included in their respective captions above at June 30, 2014 and December 31, 2013, respectively. See Note 9.

[3] Includes $99 and $92 of residential mortgage loans measured at fair value at June 30, 2014 and December 31, 2013, respectively.