CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Current Assets:
Cash and cash equivalents	$ 259	$ 4,231
Investment in marketable securities	746	540
Accounts receivable, less bad debt reserve	1,091	1,190
Accrued unbilled revenues	403	378
Natural gas inventory	299	194
Materials and supplies	273	200
Non-trading derivative assets	120	100
Taxes receivable	69	0
Prepaid expenses and other current assets	156	192
Total current assets	3,416	7,025
Property, Plant and Equipment:
Property, plant and equipment	30,066	20,267
Less: accumulated depreciation and amortization	9,738	6,223
Property, plant and equipment, net	20,328	14,044
Other Assets:
Goodwill	5,179	867
Regulatory assets	2,194	1,967
Non-trading derivative assets	64	38
Investment in unconsolidated affiliates	2,469	2,482
Preferred units – unconsolidated affiliate	363	363
Intangible assets, net	356	65
Other	273	158
Total other assets	10,898	5,940
Total Assets	34,642	27,009
Current Liabilities:
Current portion of VIE Securitization Bonds long-term debt	229	458
Indexed debt, net	21	24
Current portion of other long-term debt	618	0
Indexed debt securities derivative	817	601
Accounts payable	888	1,240
Taxes accrued	193	204
Interest accrued	121	121
Dividends accrued	0	187
Customer deposits	122	86
Non-trading derivative liabilities	50	126
Other	375	255
Total current liabilities	3,434	3,302
Other Liabilities:
Deferred income taxes, net	3,851	3,239
Non-trading derivative liabilities	32	5
Benefit obligations	812	796
Regulatory liabilities	3,481	2,525
Other	672	402
Total other liabilities	8,848	6,967
Long-term Debt:
VIE Securitization Bonds, net	817	977
Other long-term debt, net	13,197	7,705
Total long-term debt, net	14,014	8,682
Commitments and Contingencies (Note 14)
Shareholders’ Equity:
Cumulative preferred stock, $0.01 par value, 20,000,000 shares authorized
Common stock	5	5
Additional paid-in capital	6,072	6,072
Retained earnings	636	349
Accumulated other comprehensive income (loss)	(107)	(108)
Total shareholders’ equity	8,346	8,058
Total Liabilities and Shareholders’ Equity	34,642	27,009
Houston Electric [Member]
Current Assets:
Cash and cash equivalents	228	335
Accounts and notes receivable, less bad debt reserve	341	283
Accounts and notes receivable–affiliated companies	787	20
Accrued unbilled revenues	136	110
Materials and supplies	144	135
Taxes receivable	0	5
Prepaid expenses and other current assets	30	61
Total current assets	1,666	949
Property, Plant and Equipment:
Property, plant and equipment	12,621	12,148
Less: accumulated depreciation and amortization	3,795	3,746
Property, plant and equipment, net	8,826	8,402
Other Assets:
Regulatory assets	951	1,124
Other	20	32
Total other assets	971	1,156
Total Assets	11,463	10,507
Current Liabilities:
Current portion of VIE Securitization Bonds long-term debt	229	458
Accounts payable	232	262
Accounts and notes payable–affiliated companies	65	78
Taxes accrued	107	115
Interest accrued	44	64
Non-trading derivative liabilities	0	24
Other	69	89
Total current liabilities	746	1,090
Other Liabilities:
Deferred income taxes, net	1,005	1,023
Benefit obligations	84	91
Regulatory liabilities	1,295	1,298
Other	61	65
Total other liabilities	2,445	2,477
Long-term Debt:
VIE Securitization Bonds, net	817	977
Other long-term debt, net	3,972	3,281
Total long-term debt, net	4,789	4,258
Commitments and Contingencies (Note 14)
Shareholders’ Equity:
Common stock	0	0
Additional paid-in capital	2,486	1,896
Retained earnings	1,012	800
Accumulated other comprehensive income (loss)	(15)	(14)
Total shareholders’ equity	3,483	2,682
Total Liabilities and Shareholders’ Equity	11,463	10,507
CERC Corp [Member]
Current Assets:
Cash and cash equivalents	2	14
Accounts receivable, less bad debt reserve	428	894
Accounts and notes receivable–affiliated companies	100	120
Accrued unbilled revenues	83	268
Natural gas inventory	228	194
Materials and supplies	73	65
Non-trading derivative assets	120	100
Taxes receivable	4	0
Prepaid expenses and other current assets	36	115
Total current assets	1,074	1,770
Property, Plant and Equipment:
Property, plant and equipment	7,892	7,431
Less: accumulated depreciation and amortization	2,330	2,205
Property, plant and equipment, net	5,562	5,226
Other Assets:
Goodwill	867	867
Regulatory assets	189	181
Non-trading derivative assets	64	38
Other	173	132
Total other assets	1,293	1,218
Total Assets	7,929	8,214
Current Liabilities:
Accounts payable	393	856
Accounts and notes payable–affiliated companies	48	50
Taxes accrued	66	82
Interest accrued	31	38
Customer deposits	74	75
Non-trading derivative liabilities	44	102
Other	143	137
Total current liabilities	799	1,340
Other Liabilities:
Deferred income taxes, net	455	406
Non-trading derivative liabilities	18	5
Benefit obligations	95	93
Regulatory liabilities	1,221	1,227
Other	381	329
Total other liabilities	2,170	2,060
Long-term Debt:
Total long-term debt, net	2,477	2,371
Commitments and Contingencies (Note 14)
Shareholders’ Equity:
Common stock	0	0
Additional paid-in capital	2,015	2,015
Retained earnings	463	423
Accumulated other comprehensive income (loss)	5	5
Total shareholders’ equity	2,483	2,443
Total Liabilities and Shareholders’ Equity	7,929	8,214
Series A Preferred Stock [Member]
Shareholders’ Equity:
Preferred Stock, $0.01 par value	790	790
Series B Preferred Stock [Member]
Shareholders’ Equity:
Preferred Stock, $0.01 par value	$ 950	$ 950