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v3.7.0.1

Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Millions | 6 Months Ended
--- | ---
Jun. 30, 2017 | Jun. 30, 2016
Cash flows from operating activities: |  |
Net income | $ 893 | $ 1,356
Adjustments to reconcile net income to net cash provided by operating activities: |  |
Depreciation and amortization expense | 999 | 956
Lower of cost or market inventory valuation adjustment | 0 | (747)
Asset impairment loss | 0 | 56
Deferred income tax expense | 24 | 195
Changes in current assets and current liabilities | 859 | 1,130
Changes in deferred charges and credits and other operating activities, net | 10 | 13
Net cash provided by operating activities | 2,785 | 2,959
Cash flows from investing activities: |  |
Capital expenditures | (572) | (610)
Deferred turnaround and catalyst costs | (308) | (325)
Investment in joint venture | (222) | 0
Acquisition of undivided interest in crude system assets | (72) | 0
Other investing activities, net | 0 | 4
Net cash used in investing activities | (1,174) | (931)
Cash flows from financing activities: |  |
Proceeds from debt issuances or borrowings | 0 | 197
Repayments of debt and capital lease obligations | (11) | (24)
Purchase of common stock for treasury | (660) | (665)
Common stock dividends | (627) | (564)
Proceeds from issuance of Valero Energy Partners LP common units | 36 | 0
Distributions to noncontrolling interests (public unitholders) of Valero Energy Partners LP | (18) | (14)
Distributions to other noncontrolling interests | (27) | (33)
Other financing activities, net | (21) | (134)
Net cash used in financing activities | (1,328) | (1,237)
Effect of foreign exchange rate changes on cash | 108 | 20
Net increase in cash and temporary cash investments | 391 | 811
Cash and temporary cash investments at beginning of period | 4,816 | 4,114
Cash and temporary cash investments at end of period | $ 5,207 | $ 4,925

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