Nonperforming Assets (Detail) (USD $) In Millions, unless otherwise specified	Mar. 31, 2015		Dec. 31, 2014
Nonaccruing	$ 612	[1],[2]	$ 634	[1],[2]
OREO	79	[3]	99	[3]
Other repossessed assets	5		9
Loans Held-for-sale, Other	0		38
Total nonperforming assets	696		780
Commercial and Industrial [Member]
Nonaccruing	140	[1]	151	[1]
Commercial Real Estate [Member]
Nonaccruing	24	[1]	21	[1]
Commercial Construction [Member]
Nonaccruing	1	[1]	1	[1]
Residential Nonguaranteed [Member]
Nonaccruing	254	[1]	254	[1]
Home Equity Line of Credit [Member]
Nonaccruing	165	[1]	174	[1]
Residential Construction [Member]
Nonaccruing	23	[1]	27	[1]
Consumer Other Direct [Member]
Nonaccruing	4	[1]	6	[1]
Consumer Indirect [Member]
Nonaccruing	$ 1	[1]	$ 0

[1] Nonaccruing restructured loans are included in total nonaccrual/NPLs.

[2] Nonaccruing loans past due 90 days or more totaled $379 million. Nonaccruing loans past due fewer than 90 days include modified nonaccrual loans reported as TDRs and performing second lien loans which are classified as nonaccrual when the first lien loan is nonperforming.

[3] Does not include foreclosed real estate related to loans insured by the FHA or the VA. Proceeds due from the FHA and the VA are recorded as a receivable in other assets in the Consolidated Balance Sheets until the funds are received and the property is conveyed. The receivable amount related to proceeds due from the FHA or the VA totaled $61 million and $57 million at March 31, 2015 and December 31, 2014, respectively.