Debt and Capital Lease Obligations (Tables)

9 Months Ended

Sep. 30, 2016

Debt Disclosure [Abstract]

Summary of credit facilities

We had outstanding borrowings, letters of credit issued, and availability under our revolving credit facilities as follows (in millions):

				September 30, 2016
	Facility Amount		Maturity Date	Outstanding Borrowings		Letters of Credit		Availability
Committed facilities:
Revolver	$	3,000	November 2020	$	—	$	53	$	2,947
VLP Revolver	$	750	November 2020	$	524	$	—	$	226
Canadian Revolver	C$	50	November 2016	C$	—	C$	10	C$	40
Accounts receivable sales facility (a)	$	1,300	July 2017	$	100	$	—	$	1,051
Letter of credit facilities	$	275	November 2016 and June 2017	$	—	$	—	$	275
Uncommitted facilities:
Letter of credit facilities	$	650	N/A	$	—	$	185	$	465

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(a) As of September 30, 2016, the actual availability under the accounts receivable sales facility fell below the facility borrowing capacity to $1.2 billion primarily due to a decrease in eligible trade receivables as a result of the current market price environment for the finished products that we produce.