Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Cash Flows From Operating Activities:
Net Income	$ 570	$ 547
Adjustments to reconcile net income to net cash from operating activities:
Provision for credit losses	184	99
Depreciation	95	86
Amortization of intangibles	32	21
Equity-based compensation expense	27	23
(Gain) loss on securities, net	(45)	0
Net change in operating assets and liabilities:
LHFS	(540)	(698)
Trading securities	(307)	(391)
Other assets	(481)	(307)
Accounts payable and other liabilities	249	(44)
Other, net	86	71
Net cash from operating activities	(130)	(593)
Cash Flows From Investing Activities:
Proceeds from sales of AFS securities	2,329	71
Proceeds from maturities, calls and paydowns of AFS securities	1,077	1,126
Purchases of AFS securities	(4,812)	(1,856)
Proceeds from maturities, calls and paydowns of HTM securities	1,063	696
Purchases of HTM securities	(1,891)	(866)
Originations and purchases of loans and leases, net of principal collected	525	(250)
Net cash received (paid) for acquisitions and divestitures	0	1,916
Other, net	(72)	(44)
Net cash from investing activities	(1,781)	793
Cash Flows From Financing Activities:
Net change in deposits	1,383	281
Net change in short-term borrowings	537	(587)
Repayment of long-term debt	(1,137)	(2)
Net proceeds from preferred stock issued	451	0
Cash dividends paid on common stock	(211)	(173)
Cash dividends paid on preferred stock	(37)	(37)
Other, net	(8)	(8)
Net cash from financing activities	978	(526)
Net Change in Cash and Cash Equivalents	(933)	(326)
Cash and Cash Equivalents at Beginning of Period	3,711	2,325
Cash and Cash Equivalents at End of Period	2,778	1,999
Supplemental Disclosure of Cash Flow Information:
Cash paid during the period for interest	189	144
Cash paid during the period for income taxes	91	117
Noncash investing activities:
Transfers of loans to foreclosed assets	$ 125	$ 128