Consolidated Balance Sheets (USD $) In Millions, except Share data in Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Assets
Cash and due from banks	$ 1,811	$ 1,975
Interest-bearing deposits with banks	498	942
Federal funds sold and securities purchased under resale agreements or similar arrangements	160	122
Restricted cash	516	750
Trading securities at fair value	521	497
AFS securities at fair value ($1,446 and $1,591 covered by FDIC loss share at September 30, 2013 and December 31, 2012, respectively)	22,865	25,137
HTM securities (fair value of $13,181 and $13,848 at September 30, 2013 and December 31, 2012, respectively)	13,529	13,594
LHFS at fair value	2,957	3,761
Loans and leases ($2,324 and $3,294 covered by FDIC loss share at September 30, 2013 and December 31, 2012, respectively)	115,625	114,603
ALLL	(1,838)	(2,018)
Loans and leases, net of ALLL	113,787	112,585
FDIC loss share receivable	245	479
Premises and equipment	1,876	1,888
Goodwill	6,823	6,804
Core deposit and other intangible assets	595	673
Residential MSRs at fair value	956	627
Other assets ($186 and $297 of foreclosed property and other assets covered by FDIC loss share at September 30, 2013 and December 31, 2012, respectively)	13,911	14,038
Total assets	181,050	183,872
Deposits
Noninterest-bearing deposits	34,486	32,452
Interest-bearing deposits	92,998	100,623
Total deposits	127,484	133,075
Short-term borrowings	4,813	2,864
Long-term debt	20,402	19,114
Accounts payable and other liabilities	6,257	7,596
Total liabilities	158,956	162,649
Commitments and contingencies (Note 12)
Shareholders' equity
Preferred stock, $5 par, liquidation preference of $25,000 per share	2,603	2,116
Common stock, $5 par	3,525	3,499
Additional paid-in capital	6,112	5,973
Retained earnings	10,669	10,129
AOCI, net of deferred income taxes	(860)	(559)
Noncontrolling interests	45	65
Total shareholders' equity	22,094	21,223
Total liabilities and shareholders' equity	$ 181,050	$ 183,872
Common shares outstanding	704,925	699,728
Common shares authorized	2,000,000	2,000,000
Preferred shares outstanding	107	87
Preferred shares authorized	5,000	5,000