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)
Long-term debt:
First mortgage bonds 9.15% due 2021	$	102		$	—	$	102		$	—
General mortgage bonds 2.25% to 6.95% due 2022 to 2044 (2)	1,912			—		1,312			—
Pollution control bonds 4.25% to 5.60% due 2017 to 2027(3)	—			—		183			—
System restoration bonds 1.833% to 4.243% due 2015 to 2022	415			48		463			47
Transition bonds 0.90% to 5.302% due 2015 to 2024	2,259			324		2,583			307
Other	(8		)	—		(2		)	—
Total long-term debt	$	4,680		$	372	$	4,641		$	354

  ____________

(1) Includes amounts due or scheduled to be paid within one year of the date noted.

(2) Debt issued as collateral is excluded from the financial statements because of the contingent nature of the obligation.

(3) These series of debt are collateralized by CenterPoint Houston’s general mortgage bonds.

Schedule of Line of Credit Facilities [Table Text Block]

Revolving Credit Facility. As of December 31, 2014 and 2013, CenterPoint Houston 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		Size of Facility		Loans		Letters of Credit
$	300	$	—	$	4	$	300	$	—	$	4