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v3.10.0.1

Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Millions | 6 Months Ended
--- | ---
Jun. 30, 2018 | Jun. 30, 2017
Cash flows from operating activities: |  |
Net income | $ 1,457 | $ 893
Adjustments to reconcile net income to net cash provided by operating activities: |  |
Depreciation and amortization expense | 1,021 | 999
Deferred income tax expense (benefit) | (24) | 24
Changes in current assets and current liabilities | (445) | 859
Changes in deferred charges and credits and other operating activities, net | 188 | 10
Net cash provided by operating activities | 2,197 | 2,785
Cash flows from investing activities: |  |
Capital expenditures | (740) | (572)
Deferred turnaround and catalyst costs | (490) | (308)
Investments in joint ventures | (119) | (222)
Peru Acquisition, net of cash acquired | (471) | 0
Capital expenditures of certain variable interest entities | (78) | 0
Acquisitions of undivided interests | (145) | (72)
Minor acquisitions | (91) | 0
Other investing activities, net | 2 | 0
Net cash used in investing activities | (2,132) | (1,174)
Cash flows from financing activities: |  |
Proceeds from debt issuances and borrowings | 1,314 | 0
Repayments of debt and capital lease obligations | (1,345) | (11)
Purchase of common stock for treasury | (647) | (660)
Common stock dividends | (690) | (627)
Proceeds from issuance of Valero Energy Partners LP common units | 0 | 36
Contribution from noncontrolling interest | 32 | 0
Distributions to noncontrolling interests | (50) | (45)
Other financing activities, net | (16) | (21)
Net cash used in financing activities | (1,402) | (1,328)
Effect of foreign exchange rate changes on cash | (62) | 108
Net increase (decrease) in cash and cash equivalents | (1,399) | 391
Cash and cash equivalents at beginning of period | 5,850 | 4,816
Cash and cash equivalents at end of period | $ 4,451 | $ 5,207

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