Short-term Borrowings and Long-term Debt (Tables)

12 Months Ended

Dec. 31, 2014

Debt Disclosure [Abstract]

Schedule of Debt [Table Text Block]

	December 31, 2014					December 31, 2013
	Long-Term			Current(1)		Long-Term			Current(1)
	(in millions)
Short-term borrowings:
Inventory financing	$	—		$	53	$	—		$	43
Total short-term borrowings	—			53		—			43
Long-term debt:
Senior notes 4.50% to 6.625% due 2016 to 2041	2,168			—		2,168			—
Commercial paper (2)	341			—		118			—
Unamortized discount and premium	(40		)	—		(46		)	—
Total long-term debt	2,469			—		2,240			—
Total debt	$	2,469		$	53	$	2,240		$	43

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(1) Includes amounts due or exchangeable within one year of the date noted.

(2) Classified as long-term debt because the termination date of the facility that backstops the commercial paper is more than one year from the date noted.

Schedule of Line of Credit Facilities [Table Text Block]

 As of December 31, 2014 and 2013, CERC had the following revolving credit facility and utilization of such facility (in millions):

		December 31, 2014						December 31, 2013
Size of Facility		Loans		Letters of Credit		Commercial Paper		Loans		Letters of Credit		Commercial Paper
$	600	$	—	$	—	$	341	$	—	$	—	$	118