CONSOLIDATED STATEMENT OF CASH FLOWS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Cash flows from operating activities
Net income (loss)	$ 330	$ 354	$ (338)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	158	142	296
Goodwill impairment	0	0	616
Provision for credit losses	361	188	193
Deferred income tax provision	190	185	2
Other-than-temporary impairment related to securities held-to-maturity	0	11	0
Net realized gains on securities available-for-sale	(48)	(122)	(194)
Realized (gains) losses on securities held-to-maturity	0	9	(8)
Net change in other assets and liabilities	386	180	(491)
Net change in loans held for sale:
Originations and purchases of loans held for sale	(2,145)	(1,515)	(2,078)
Sales and collections of loans held for sale	2,371	1,500	2,464
Net change in trading assets and liabilities	3,298	5,091	(1,844)
Lower of amortized cost or fair value adjustments on loans held for sale	14	2	(9)
Loss (gain) on instruments designated at fair value and related derivatives	(264)	(75)	32
Net cash provided by (used in) operating activities	4,651	5,950	(1,359)
Cash flows from investing activities
Net change in interest bearing deposits with banks	23,329	(11,193)	(6,316)
Net change in federal funds sold and securities purchased under agreements to resell	(18,434)	706	1,030
Securities available-for-sale:
Purchases of securities available-for-sale	(23,375)	(19,012)	(32,824)
Proceeds from sales of securities available-for-sale	15,149	29,839	35,211
Proceeds from maturities of securities available-for-sale	1,954	3,857	7,954
Securities held-to-maturity:
Purchases of securities held-to-maturity	(2,993)	(1,875)	0
Proceeds from sales of securities held-to-maturity	0	67	79
Proceeds from maturities of securities held-to-maturity	2,408	762	433
Change in loans:
Originations, net of collections	(7,145)	(11,416)	(4,765)
Loans sold to third parties	13	852	499
Cash received in sale of London Branch precious metals business to an affiliate	0	98	0
Net cash used for acquisitions of properties and equipment	(43)	(38)	(52)
Other, net	(386)	34	(16)
Net cash provided by (used in) investing activities	(9,523)	(7,319)	1,233
Cash flows from financing activities
Net change in deposits	2,472	3,327	(5,146)
Debt:
Net change in short-term borrowings	(7,806)	(6,340)	3,787
Issuance of long-term debt	16,586	8,067	5,547
Repayment of long-term debt	(9,937)	(3,686)	(4,370)
Preferred stock redemption	(300)	0	0
Capital contribution from parent	4,000	0	0
Other decreases in capital surplus	(1)	4	(17)
Dividends paid	(65)	(73)	(73)
Net cash provided by (used in) financing activities	4,949	1,299	(272)
Net change in cash and due from banks	77	(70)	(398)
Cash and due from banks at beginning of period	891	961	1,359
Cash and due from banks at end of period	968	891	961
Supplemental disclosure of cash flow information
Interest paid during the period	942	752	921
Net income taxes paid during the period	354	31	80
Supplemental disclosure of non-cash investing activities
Transfer of loans to held for sale, net	1,850	316	79
Transfer of securities available-for-sale to securities held-to-maturity	0	10,985	0
Fair value of properties added to real estate owned upon foreclosure	$ 40	$ 50	$ 51