Debt and Capital Lease Obligations (Tables)

9 Months Ended

Sep. 30, 2018

Debt and Capital Lease Obligations [Abstract]

Summary of credit facilities

We had outstanding borrowings, letters of credit issued, and availability under our credit facilities as follows (amounts in millions and currency in U.S. dollars, except as noted):

				September 30, 2018
	Facility Amount		Maturity Date	Outstanding Borrowings		Letters of Credit Issued		Availability
Committed facilities:
Valero Revolver	$	3,000	November 2020	$	—	$	60	$	2,940
VLP Revolver	$	750	November 2020	$	—	$	—	$	750
IEnova Revolver	$	340	February 2028	$	71	n/a		$	269
Canadian Revolver (a)	C$	75	November 2018	C$	—	C$	5	C$	70
Accounts receivable sales facility	$	1,300	July 2019	$	100	n/a		$	1,200
Letter of credit facility (a)	$	100	November 2018	n/a		$	—	$	100
Uncommitted facilities:
Letter of credit facilities	n/a		n/a	n/a		$	307	n/a

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(a) This facility is expected to be amended to extend the maturity date from November 2018 to November 2019.

Interest and debt expense, net of capitalized interest

Interest and debt expense, net of capitalized interest is comprised of the following (in millions):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2018		2017		2018		2017
Interest and debt expense	$	134	$	134	$	417	$	402
Less capitalized interest	23		20		61		48
Interest and debt expense, net of capitalized interest	$	111	$	114	$	356	$	354