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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
OPERATING ACTIVITIES |  |  |  |
Net income |  | $ 1,057 | $ 1,791 | $ 1,721
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |  |
Provision for credit losses |  | 1,616 | 393 | 326
Net change in loans held for sale |  | 32 | (672) | 26
Depreciation, amortization and accretion |  | 567 | 622 | 486
Amortization of intangibles |  | 11 | 11 | 3
Deferred income taxes |  | (238) | 64 | 97
Share-based compensation |  | 48 | 41 | 41
Net gain on sales of: |  |  |  |
Debt securities |  | (4) | (25) | (19)
Premises and equipment |  | 0 | (6) | 0
Increase in other assets |  | (3,979) | (853) | (1,217)
Increase in other liabilities |  | 1,001 | 331 | 303
Net cash provided by operating activities |  | 111 | 1,697 | 1,767
Investment securities: |  |  |  |
Purchases of debt securities available for sale |  | (9,271) | (8,422) | (4,270)
Proceeds from maturities and paydowns of debt securities available for sale |  | 6,943 | 3,946 | 3,258
Proceeds from sales of debt securities available for sale |  | 585 | 5,016 | 998
Proceeds from maturities and paydowns of debt securities held to maturity |  | 897 | 398 | 522
Net (increase) decrease in interest-bearing deposits in banks |  | (9) | (149) | 44
Acquisitions, net of cash acquired |  | (3) | (129) | (533)
Net increase in loans and leases |  | (5,095) | (4,334) | (6,445)
Capital expenditures, net |  | (118) | (95) | (232)
Other |  | (65) | (106) | (419)
Net cash used in investing activities |  | (6,136) | (3,875) | (7,077)
FINANCING ACTIVITIES |  |  |  |
Net increase in deposits |  | 21,851 | 5,738 | 4,486
Net decrease in short-term borrowed funds |  | (39) | (1,048) | (4,870)
Proceeds from issuance of long-term borrowed funds |  | 8,323 | 12,850 | 22,503
Repayments of long-term borrowed funds |  | (14,022) | (14,857) | (14,837)
Treasury stock purchased |  | (270) | (1,220) | (1,025)
Net proceeds from issuance of preferred stock |  | 395 | 730 | 593
Dividends declared and paid to common stockholders |  | (672) | (617) | (471)
Dividends declared and paid to preferred stockholders |  | (98) | (65) | (14)
Premium paid to exchange debt |  | (80) | 0 | 0
Payments of employee tax withholding for share-based compensation |  | (16) | (21) | (13)
Net cash provided by financing activities |  | 15,372 | 1,490 | 6,352
Increase (decrease) in cash and cash equivalents | [1] | 9,347 | (688) | 1,042
Cash and cash equivalents at beginning of period | [1] | 3,386 | 4,074 | 3,032
Cash and cash equivalents at end of period | [1] | 12,733 | 3,386 | 4,074
Supplemental disclosures: |  |  |  |
Interest paid |  | 837 | 1,560 | 1,184
Income taxes paid |  | 261 | 326 | 241
Non-cash items: |  |  |  |
Transfer of securities from available for sale to held to maturity |  | 813 | 192 | 0
Transfer of securities from held to maturity to available for sale |  | 0 | 734 | 0
Loans securitized and transferred to securities available for sale |  | 956 | 150 | 142
Loans securitized and transferred to securities held to maturity |  | 111 | 0 | 0
Stock issued for share-based compensation plans |  | 30 | 59 | 20
Stock issued for Employee Stock Purchase Plan |  | $ 19 | $ 17 | $ 14
[1] | Cash and cash equivalents include cash and due from banks and interest-bearing cash and due from banks as reflected on the Consolidated Balance Sheets.

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