Consolidated Statements of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Cash Flows From Operating Activities:
Net Income	$ 1,799	$ 1,581
Adjustments to reconcile net income to net cash from operating activities:
Provision for credit losses	443	299
Adjustment to income tax provision	(13)	(107)
Depreciation	298	265
(Gain) loss on early extinguishment of debt	(1)	172
Amortization of intangibles	112	73
Equity-based compensation expense	96	88
(Gain) loss on securities, net	(45)	3
Net change in operating assets and liabilities:
LHFS	(1,617)	5
Trading securities	188	(331)
Other assets	(628)	(294)
Accounts payable and other liabilities	(118)	(42)
Cash paid to terminate FDIC loss share agreements	(230)	0
Other, net	16	190
Net cash from operating activities	300	1,902
Cash Flows From Investing Activities:
Proceeds from sales of AFS securities	4,538	6,252
Proceeds from maturities, calls and paydowns of AFS securities	4,039	4,069
Purchases of AFS securities	(9,867)	(10,306)
Proceeds from maturities, calls and paydowns of HTM securities	5,963	2,637
Purchases of HTM securities	(5,122)	(2,116)
Originations and purchases of loans and leases, net of principal collected	(1,567)	(2,278)
Net cash received (paid) for acquisitions and divestitures	(789)	1,307
Other, net	319	(27)
Net cash from investing activities	(2,486)	(462)
Cash Flows From Financing Activities:
Net change in deposits	4,183	1,200
Net change in short-term borrowings	(923)	(1,994)
Proceeds from issuance of long-term debt	3,028	2,266
Repayment of long-term debt	(4,573)	(1,458)
Net cash from common stock transactions	(136)	59
Net proceeds from preferred stock issued	450	0
Cash dividends paid on common stock	(682)	(579)
Cash dividends paid on preferred stock	(123)	(111)
Other, net	223	(368)
Net cash from financing activities	1,447	(985)
Net Change in Cash and Cash Equivalents	(739)	455
Cash and Cash Equivalents at Beginning of Period	3,711	2,325
Cash and Cash Equivalents at End of Period	2,972	2,780
Supplemental Disclosure of Cash Flow Information:
Cash paid during the period for interest	569	518
Cash paid during the period for income taxes	706	578
Noncash investing activities:
Transfers of loans to foreclosed assets	356	389
Purchase of additional interest in AmRisc LP Noncash	0	216
Stock issued in business combinations	1,063	2,188
Transfer from Investments	$ 0	$ 517