Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Cash flows from operating activities:
Net income	$ 3,706	$ 2,491
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization expense	1,348	1,265
Aruba Refinery asset retirement expense and other	0	63
Deferred income tax expense	77	191
Changes in current assets and current liabilities	46	(808)
Changes in deferred charges and credits and other operating activities, net	(53)	42
Net cash provided by operating activities	5,124	3,244
Cash flows from investing activities:
Capital expenditures	(1,186)	(1,453)
Deferred turnaround and catalyst costs	(509)	(492)
Other investing activities, net	16	(41)
Net cash used in investing activities	(1,679)	(1,986)
Cash flows from financing activities:
Proceeds from debt issuances	1,446	0
Repayment of debt	(502)	(200)
Proceeds from the exercise of stock options	29	37
Purchase of common stock for treasury	(2,071)	(799)
Common stock dividends	(608)	(411)
Contributions from noncontrolling interests	4	14
Distributions to noncontrolling interests (public unitholders) of Valero Energy Partners LP	(14)	(8)
Distributions to other noncontrolling interest	(25)	0
Other financing activities, net	14	51
Net cash used in financing activities	(1,727)	(1,316)
Effect of foreign exchange rate changes on cash	(106)	(43)
Net increase (decrease) in cash and temporary cash investments	1,612	(101)
Cash and temporary cash investments at beginning of period	3,689	4,292
Cash and temporary cash investments at end of period	$ 5,301	$ 4,191