Consolidated Statements of Cash Flows - USD ($) $ in Millions	6 Months Ended
Jun. 30, 2019	Jun. 30, 2018
Cash Flows from Operating Activities:
Net income including noncontrolling interests	$ 375	$ 496
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
(Reversal of) provision for credit losses	94	(21)
Depreciation, amortization and accretion, net	248	166
Stock-based compensation—restricted stock units	41	38
Deferred income taxes	(86)	(64)
Net gains on sales of securities	(23)	(3)
Net decrease (increase) in securities borrowed or purchased under resale agreements	(1,638)	846
Net decrease (increase) in securities loaned or sold under repurchase agreements	1,632	(858)
Net decrease (increase) in trading account assets	303	(1,753)
Net decrease (increase) in other assets	(317)	(87)
Net increase (decrease) in trading account liabilities	(222)	1,391
Net increase (decrease) in other liabilities	(96)	(225)
Loans originated for sale	(1,138)	(880)
Net proceeds from sale of loans originated for sale	1,178	623
Pension and other benefits adjustment	(21)	(25)
Other, net	20	(5)
Total adjustments	(25)	(857)
Net cash provided by (used in) operating activities	350	(361)
Cash Flows from Investing Activities:
Proceeds from sales of securities available for sale	2,862	627
Proceeds from paydowns and maturities of securities available for sale	1,257	1,444
Purchases of securities available for sale	(2,623)	(2,729)
Proceeds from paydowns and maturities of securities held to maturity	2,633	811
Purchases of securities held to maturity	(1,749)	0
Proceeds from sales of loans	245	514
Net decrease (increase) in loans	(2,164)	(2,217)
Purchases of other investments	(55)	(153)
Other, net	(248)	(55)
Net cash provided by (used in) investing activities	158	(1,758)
Cash Flows from Financing Activities:
Net increase (decrease) in deposits	3,608	724
Net increase (decrease) in commercial paper and other short-term borrowings	(595)	2,686
Proceeds from issuance of long-term debt	1,703	4,050
Repayment of long-term debt	(3,559)	(1,995)
Other, net	(64)	(84)
Change in noncontrolling interests	(1)	0
Net cash provided by (used in) financing activities	1,092	5,381
Net change in cash, cash equivalents and restricted cash	1,600	3,262
Cash, cash equivalents and restricted cash at beginning of period	8,398	3,528
Cash, cash equivalents and restricted cash at end of period	9,998	6,790
Cash Paid During the Period For:
Interest	1,322	698
Income taxes, net	188	72
Supplemental Schedule of Noncash Investing and Financing Activities:
Securities available for sale transferred to securities held to maturity	319	(67)
securities held to maturity transferred to securities available for sale	170	0
Securities available for sale transferred to securities held to maturity	0	2,006
Lease assets upon adoption of ASU 2016-02, Leases	632	0
Lease liabilities upon adoption of ASU 2016-02, Leases	740	0
Reconciliation of Cash, Cash Equivalents and Restricted Cash:
Cash and cash equivalents	8,350
Total cash, cash equivalents and restricted cash per consolidated statement of cash flows	$ 8,398	$ 3,528

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