Consolidated Statement of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Operating Activities:
Net income	$ 1,122	$ 987
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Deferred income tax (benefit)	(56)	(32)
Amortization of other intangible assets	106	98
Other non-cash adjustments for depreciation, amortization and accretion, net	415	362
Losses (gains) related to investment securities, net	40	(1)
Change in trading account assets, net	128	(41)
Change in accrued interest and fees receivable, net	(161)	(53)
Change in collateral deposits, net	(1,047)	2,612
Change in unrealized losses on foreign exchange derivatives, net	3,578	(139)
Change in other assets, net	(1,787)	(307)
Change in accrued expenses and other liabilities, net	1,354	1,343
Other, net	307	183
Net cash provided by operating activities	3,999	5,012
Investing Activities:
Net decrease in interest-bearing deposits with banks	7,318	169
Net (increase) decrease in securities purchased under resale agreements	(1,216)	1,394
Proceeds from sales of available-for-sale securities	4,354	305
Proceeds from maturities of available-for-sale securities	15,178	13,621
Purchases of available-for-sale securities	(14,880)	(15,981)
Proceeds from maturities of held-to-maturity securities	1,621	2,344
Purchases of held-to-maturity securities	(2,636)	(2,649)
Net (increase) in loans and leases	(4,587)	(1,023)
Purchases of equity investments and other long-term assets	(19)	(214)
Purchases of premises and equipment, net	(325)	(328)
Proceeds from sale of joint venture investment	172	0
Other, net	36	76
Net cash provided by (used in) investing activities	5,016	(2,286)
Financing Activities:
Net (decrease) increase in time deposits	(17,067)	10,524
Net increase (decrease) in all other deposits	11,320	(9,021)
Net (decrease) in other short-term borrowings	(664)	(191)
Proceeds from issuance of long-term debt, net of issuance costs	747	1,492
Payments for long-term debt and obligations under capital leases	(471)	(1,420)
Proceeds from issuance of preferred stock, net	0	493
Purchases of common stock	(592)	(715)
Excess tax benefit related to stock-based compensation	0	3
Repurchases of common stock for employee tax withholding	(76)	(72)
Payments for cash dividends	(379)	(353)
Other, net	9	0
Net cash (used in) provided by financing activities	(7,173)	740
Net increase	1,842	3,466
Cash and due from banks at beginning of period	1,314	1,207
Cash and due from banks at end of period	$ 3,156	$ 4,673