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Consolidated Cash Flow Statements (Unaudited) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Cash flows from operating activities    
Net income $ 2,704 $ 1,971
Adjustments to reconcile net income to net cash provided by (used for) operating activities:    
Deferred income taxes 0 0
(Income) loss from equity method investments (50) (9)
Stock-based compensation expense 321 269
Depreciation and amortization 390 434
Net gain on sale of available-for-sale securities 0 (2)
Impairment charges 8 5
Provision for credit losses on lending activities 26 25
Other operating adjustments 5 (74)
Changes in assets and liabilities:    
Trading assets, net of Trading liabilities 33,832 (12,838)
Securities borrowed (11,825) 13,433
Securities loaned (36) 3,090
Customer and other receivables and other assets (13,019) (1,687)
Customer and other payables and other liabilities 1,129 (3,556)
Securities purchased under agreements to resell 4,012 (2,868)
Securities sold under agreements to repurchase (4,849) 1,897
Net cash provided by (used for) operating activities 12,648 90
Cash flows from investing activities    
Other assets-Premises, equipment and software, net (410) (350)
Business dispositions, net of cash disposed 0 0
Changes in loans, net (3,801) (1,105)
Investment securities:    
Purchases (5,482) (6,449)
Proceeds from sales 810 3,604
Proceeds from paydowns and maturities 2,125 2,071
Other investing activities (164) 61
Net cash provided by (used for) investing activities (6,922) (2,168)
Cash flows from financing activities    
Noncontrolling interests (5) (2)
Other secured financings (2,101) 199
Deposits 988 (3,754)
Proceeds from:    
Derivatives financing activities 0 48
Issuance of preferred stock, net of issuance costs 0 994
Issuance of Borrowings 15,370 18,433
Payments for:    
Borrowings (11,377) (11,538)
Derivatives financing activities 0 0
Repurchases of common stock and employee tax withholdings (1,868) (1,161)
Cash dividends (599) (511)
Other financing activities (45) 14
Net cash provided by (used for) financing activities 363 2,722
Effect of exchange rate changes on cash and cash equivalents 860 877
Net increase (decrease) in cash and cash equivalents 6,949 1,521
Cash and cash equivalents, at beginning of period 80,395 77,360
Cash and cash equivalents, at end of period 87,344 78,881
Cash and cash equivalents:    
Cash and due from banks 29,073 22,081
Interest bearing deposits with banks 22,980 20,773
Restricted cash 35,291 36,027
Cash and cash equivalents, at end of period 87,344 78,881
Supplemental Disclosure of Cash Flow Information    
Cash payments for interest 1,407 737
Cash payments for income taxes, net of refunds $ 250 $ 262