Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Cash Flows From Operating Activities:
Net Income	$ 1,617	$ 1,141
Adjustments to reconcile net income to net cash from operating activities:
Provision for credit losses	168	532
Adjustment to income tax provision	(36)	516
Depreciation	247	233
Amortization of intangibles	69	80
Equity-based compensation	84	85
(Gain) loss on securities, net	3	(46)
Net write-downs/losses on foreclosed property	22	25
Net change in operating assets and liabilities:
LHFS	(779)	809
Other assets	903	(771)
Accounts payable and other liabilities	(939)	(1,076)
Other, net	145	222
Net cash from operating activities	1,504	1,750
Cash Flows From Investing Activities:
Proceeds from sales of AFS securities	1,214	988
Proceeds from maturities, calls and paydowns of AFS securities	2,984	5,101
Purchases of AFS securities	(3,050)	(4,667)
Proceeds from maturities, calls and paydowns of HTM securities	1,291	2,659
Purchases of HTM securities	(3,926)	(2,619)
Originations and purchases of loans and leases, net of principal collected	(3,571)	(2,095)
Net cash for business combinations	1,025	(6)
Proceeds from sales of foreclosed property	178	331
Other, net	367	291
Net cash from investing activities	(3,488)	(17)
Cash Flows From Financing Activities:
Net change in deposits	2,192	(5,590)
Net change in short-term borrowings	(753)	1,949
Proceeds from issuance of long-term debt	4,005	2,639
Repayment of long-term debt	(3,262)	(1,275)
Net cash from preferred stock transactions		487
Cash dividends paid on common stock	(493)	(610)
Cash dividends paid on preferred stock	(111)	(110)
Other, net	258	207
Net cash from financing activities	1,836	(2,303)
Net Change in Cash and Cash Equivalents	(148)	(570)
Cash and Cash Equivalents at Beginning of Period	2,165	3,039
Cash and Cash Equivalents at End of Period	2,017	2,469
Supplemental Disclosure of Cash Flow Information:
Cash paid during the period for interest	569	695
Cash paid during the period for income taxes	260	510
Noncash investing activities:
Transfers of loans to foreclosed assets	384	420
Transfers of loans held for investment to LHFS	$ 550