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Taxes (Details 5) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
General Taxes
KWH excise	$ 198	$ 188	$ 196
State gross receipts	192	184	184
Real and personal property	478	452	421
Social security and unemployment	103	96	91
Other	22	20	21
Total general taxes	$ 993	$ 940	$ 913

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Excise Taxes, Energy Generation

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Taxes, Gross Receipts, State and Local

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Taxes, Social Security and Unemployment

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- Definition

The aggregate total of real estate taxes and insurance expense.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 720
-SubTopic 30
-Section 45
-Paragraph 3
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-SubTopic 10
-Section S99
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-Subparagraph (SX 210.5-03.6)
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All taxes not related to income of the entity or excise or sales taxes levied on the revenue of the entity that are not reported elsewhere. These taxes could include production, real estate, personal property, and pump tax.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
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Amount of tax expense classified as other.

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