Consolidated Statement of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Operating Activities:
Net income	$ 2,160	$ 1,807
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Deferred income tax (benefit)	(98)	(217)
Amortization of other intangible assets	145	160
Other non-cash adjustments for depreciation, amortization and accretion, net	729	636
(Gains) losses related to investment securities, net	(6)	39
Change in trading account assets, net	92	(111)
Change in accrued interest and fees receivable, net	(97)	(399)
Change in collateral deposits, net	7,236	(1,232)
Change in unrealized losses on foreign exchange derivatives, net	(2,118)	1,136
Change in other assets, net	(64)	(2,063)
Change in accrued expenses and other liabilities, net	750	1,733
Other, net	95	368
Net cash provided by operating activities	8,824	1,857
Investing Activities:
Net decrease in interest-bearing deposits with banks	3,609	9,979
Net (increase) in securities purchased under resale agreements	(954)	(1,509)
Proceeds from sales of available-for-sale securities	15,712	7,122
Proceeds from maturities of available-for-sale securities	11,156	21,619
Purchases of available-for-sale securities	(17,949)	(20,891)
Proceeds from maturities of held-to-maturity securities	5,003	2,647
Purchases of held-to-maturity securities	(4,390)	(3,961)
Net (increase) in loans and leases	(53)	(3,859)
Business acquisitions, net of cash acquired	(63)	0
Purchases of equity investments and other long-term assets	(243)	(32)
Purchases of premises and equipment, net	(436)	(485)
Proceeds from sale of joint venture investment	0	172
Other, net	39	77
Net cash provided by investing activities	11,431	10,879
Financing Activities:
Net increase (decrease) in time deposits	1,606	(16,790)
Net (decrease) increase in all other deposits	(18,304)	8,890
Net increase (decrease) in other short-term borrowings	(1,287)	(865)
Proceeds from issuance of long-term debt, net of issuance costs	0	747
Payments for long-term debt and obligations under capital leases	(1,032)	(482)
Proceeds from issuance of preferred stock	495	0
Proceeds from issuance of common stock	1,150	0
Purchases of common stock	(350)	(942)
Repurchases of common stock for employee tax withholding	113	(101)
Payments for cash dividends	(608)	(577)
Other, net	0	9
Net cash (used in) financing activities	(18,217)	(10,111)
Net increase	2,038	2,625
Cash and due from banks at beginning of period	2,107	1,314
Cash and due from banks at end of period	$ 4,145	$ 3,939