v3.3.1.900

Investment In Oncor Holdings (Oncor Holdings Financial Statements) (Details) - Variable Interest Entity, Primary Beneficiary [Member] - Oncor Holdings [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Schedule of Equity Method Investments [Line Items]
Operating revenues	$ 3,878	$ 3,822	$ 3,552
Operation and maintenance expenses	(1,526)	(1,453)	(1,269)
Depreciation and amortization	(863)	(851)	(814)
Taxes other than income taxes	(450)	(438)	(424)
Other income	6	13	18
Other deductions	(28)	(15)	(15)
Interest income	0	3	4
Interest expense and related charges	(333)	(353)	(371)
Income before income taxes	684	728	681
Income tax expense	(264)	(289)	(259)
Net income	420	439	422
Net income attributable to noncontrolling interests	(86)	(90)	(87)
Net income attributable to Oncor Holdings	334	349	$ 335
Current assets:
Cash and cash equivalents	26	5
Restricted cash	38	56
Trade accounts receivable — net	388	407
Trade accounts and other receivables from affiliates	118	118
Income taxes receivable from EFH Corp.	107	144
Inventories	82	73
Accumulated deferred income taxes	0	10
Prepayments and other current assets	88	91
Total current assets	847	904
Restricted cash	0	16
Other investments	97	97
Property, plant and equipment — net	13,024	12,463
Goodwill	4,064	4,064
Regulatory assets — net	1,194	1,429
Other noncurrent assets	31	34
Total assets	19,257	19,007
Current liabilities:
Short-term borrowings	840	711
Long-term debt due currently	41	639
Trade accounts payable — nonaffiliates	150	202
Income taxes payable to EFH Corp.	20	24
Accrued taxes other than income	181	174
Accrued interest	82	93
Other current liabilities	144	156
Total current liabilities	1,458	1,999
Accumulated deferred income taxes	1,985	1,978
Long-term debt, less amounts due currently	5,646	4,964
Other noncurrent liabilities and deferred credits	2,306	2,245
Total liabilities	$ 11,395	$ 11,186

The amount of accrued interest reported by an equity method investment of the entity.

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The amount of accrued taxes other than income reported by an equity method investment of the entity.

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The amount of current and accumulated deferred income taxes reported by an equity method investment of the entity.

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The amount of noncurrent accumulated deferred income taxes reported by an equity method investment of the entity.

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Equity Method Investment, Summarized Financial Information, Assets Current [Abstract]

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The amount of cash and cash equivalents reported by an equity method investment of the entity.

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The amount of current restricted cash as reported by an equity method investment of the entity.

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The amount of depreciation and amortization expense during the period reported by an equity method investment of the entity.

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The amount of goodwill reported by an equity method investment of the entity.

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The amount of operating profit and nonoperating income or expense before income taxes during the period reported by an equity method investment of the entity.

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The sum during the period of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to continuing operations reported by an equity method investment of the entity.

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The amount of current income taxes payable to parent reported by an equity method investment of the entity.

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The amount of current income taxes receivable from parent reported by an equity method investment of the entity.

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The amount of interest expense and related charges during the period reported by an equity method investment of the entity.

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The amount of interest income during the period reported by an equity method investment of the entity.

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The amount of inventories reported by an equity method investment of the entity.

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Equity Method Investment, Summarized Financial Information, Liabilities, Current [Abstract]

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- Definition

The amount of long-term debt due currently reported by an equity method investment of the entity.

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The amount of long-term debt, less amounts due currently, reported by an equity method investment of the entity.

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The amount of net income (loss) during the period attributable to noncontrolling interests reported by an equity method investment of the entity.

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The amount of net income (loss) during the period reported by an equtiy method investment of the entity.

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The amount of noncurrent restricted cash reported by an equity method investment of the entity.

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The amount of operating expense during the period reported by an equity method investment of the entity.

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The amount of other current liabilities reported by an equity method invetment of the entity.

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The aggregate amount reported by an equity method investment of the entity of other expense amounts, the components of which are not separately disclosed on the income statement, resulting from ancillary business-related activities (that is, excluding major activities considered part of the normal operations of the business) also known as other nonoperating expense recognized during the period.

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The aggregate amount reported by an equity method investment of the entity of other income amounts, the components of which are not separately disclosed on the income statement, resulting from ancillary business-related activities (that is, excluding major activities considered part of the normal operations of the business) also known as nonoperating income recognized for the period.

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The amount of other investments reported by an equity method investment of the entity.

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The amount of other noncurrent assets reported by an equity method investment of the entity.

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The amount of other noncurrent liabilities and deferred credits reported by an equity method investment of the entity.

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The amount of prepayments and other current assets reported by an equity method investment of the entity.

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The amount of property, plant and equipment reported by an equity method investment of the entity.

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The amount of net regulatory assets reported by an equity method investment of the entity.

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The amount of short-term borrowings reported by an equity method investment of the entity.

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The amount of all taxes not related to income that are reported by an equity method investment of the entity and not reported elsewhere.

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The amount of trade accounts and other receivables from affiliates reported by an equity method investment of the entity.

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The amount of nonaffiliated trade accounts payable reported by an equity method investment of the entity.

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The amount of net trade accounts receivables reported by an equity method investment of the entity.

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The amount of assets reported by an equity method investment of the entity.

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Reference 5: http://www.xbrl.org/2003/role/presentationRef
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-Section 50
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-URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33912-111571

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Reference 8: http://www.xbrl.org/2003/role/presentationRef
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