Supplemental Disclosure of Cash Flow Information (Tables)

6 Months Ended

Jun. 30, 2018

Supplemental Cash Flow Elements [Abstract]

Schedule of Cash Flow, Supplemental Disclosures [Table Text Block]

The table below provides supplemental disclosure of cash flow information:

	Six Months Ended June 30,
	2018						2017
	CenterPoint Energy		Houston Electric		CERC		CenterPoint Energy		Houston Electric		CERC
	(in millions)
Cash Payments/Receipts:
Interest, net of capitalized interest	$	167	$	90	$	50	$	182	$	94	$	56
Income taxes, net	88		120		3		11		76		3
Non-cash transactions:
Accounts payable related to capital expenditures	133		75		69		106		75		44

The table below provides a reconciliation of cash, cash equivalents and restricted cash reported in the Condensed Consolidated Balance Sheets to the amount reported in the Condensed Statements of Consolidated Cash Flows:

	June 30, 2018				December 31, 2017
	CenterPoint Energy		Houston Electric		CenterPoint Energy		Houston Electric
	(in millions)
Cash and cash equivalents	$	328	$	253	$	260	$	238
Restricted cash included in Prepaid expenses and other current assets	37		37		35		35
Restricted cash included in Other	1		1		1		1
Total cash, cash equivalents and restricted cash shown in Condensed Statements of Consolidated Cash Flows	$	366	$	291	$	296	$	274

CERC does not have restricted cash and therefore was not included in the table above.