CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Operating activities:
Income from continuing operations, net of tax	$ 4,012	$ 4,423	$ 4,354
Income (loss) from discontinued operations, net of tax	38	5	(233)
Net income	4,050	4,428	4,121
Adjustments to reconcile net income to cash provided by operating activities:
Provision for Loan, lease and Other losses	4,536	3,541	3,453
Depreciation and amortization, net	2,100	2,002	2,065
Net loss (gain) on sales of securities available for sale	2	(21)	(7)
Impairment losses on securities available for sale	30	24	41
Gain on sales of loans held for sale	(86)	(48)	(32)
Stock plan compensation expense	161	205	240
Loans held for sale:
Originations and purchases	(6,942)	(5,619)	(2,276)
Proceeds from sales and paydowns	6,805	5,365	2,469
Changes in operating assets and liabilities:
(Increase) decrease in interest receivable	(72)	(29)	356
Increase in other assets	(998)	(478)	(576)
Increase (decrease) in interest payable	45	22	(165)
Increase in other liabilities	575	99	550
Net cash used by discontinued operations	(79)	(187)	(255)
Net cash provided by operating activities	10,127	9,304	9,984
Securities available for sale:
Purchases	(12,200)	(12,650)	(14,951)
Proceeds from paydowns and maturities	7,742	7,968	13,664
Proceeds from sales	4,379	7,417	2,539
Securities held to maturity:
Purchases	(4,277)	(4,827)	(1,111)
Proceeds from paydowns and maturities	2,163	1,471	266
Loans:
Net (increase) decrease in loans held for investment	(18,575)	(16,563)	2,291
Principal recoveries of loans previously charged off	1,498	1,582	1,589
Purchases of premises and equipment	(532)	(502)	(818)
Payments to Acquire Businesses, Net of Cash Acquired	9,314	24	204
Net cash (used) provided by other investing activities	(610)	137	456
Net cash (used) provided by investing activities	(29,726)	(15,991)	3,721
Financing activities:
(Increase) decrease in restricted cash for securitization investors	(783)	640	(446)
Net increase (decrease) in deposits	12,163	1,017	(7,972)
Issuance of securitized debt obligations	5,062	4,291	2,200
Maturities and paydowns of securitized debt obligations	(500)	(2,992)	(3,309)
Issuance of senior and subordinated notes and long-term FHLB advances	31,830	7,714	2,063
Maturities and paydowns of senior and subordinated notes and long-term FHLB advances	(9,579)	(2,375)	(777)
Repayments of Subordinated Short-term Debt	0	0	3,641
Net (decrease) increase in other short-term borrowings	(16,066)	919	(5,144)
Common stock:
Net proceeds from issuances	111	100	81
Dividends paid	(816)	(679)	(555)
Preferred stock:
Proceeds from Issuance of Preferred Stock and Preference Stock	1,472	969	0
Dividends paid	(158)	(67)	(53)
Purchases of treasury stock	(2,441)	(2,045)	(1,033)
Proceeds from share-based payment activities	85	146	114
Net cash provided (used) by financing activities	20,380	7,638	(18,472)
Increase (decrease) in cash and cash equivalents	781	951	(4,767)
Cash and cash equivalents at beginning of the period	7,242	6,291	11,058
Cash and cash equivalents at end of the period	8,023	7,242	6,291
Non-cash items:
Net transfers from loans held for investment to loans held for sale	268	182	6,846
Interest paid	1,643	1,569	1,936
Income tax paid	1,732	1,603	1,721
Available-for-sale Security Transferred To Held-to-maturity Security	0	0	18,275
Net Debt Exchange of Unsecured Debt	$ 0	$ 0	$ 1,968