Organization and Summary of Significant Accounting Policies (Details) (USD $) In Millions	3 Months Ended	9 Months Ended
Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010	Dec. 31, 2010	Dec. 31, 2009
Excise taxes
Excise taxes	$ 96	$ 101	$ 245	$ 265
Consolidation of variable interest entities
Cumulative effect of change in accounting principle	10,115	10,024	10,115	10,024	10,027	9,455
Miscellaneous other property and investments	12		12		12
Cash and cash equivalents	1		1		0
Prepayments and other current assets	0		0		1
Accounts payable	0		0		5
VIE - exposure to loss from capital lease agreements	7.5		7.5
VIE - activity with VIE related to lease payments	$ 1	$ 1	$ 2	$ 2

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The carrying amount of the consolidated Variable Interest Entity's assets included in the reporting entity's statement of financial position within cash and cash equivalents.

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The carrying amount of the consolidated Variable Interest Entity's assets included in the reporting entity's statement of financial position within miscellaneous other property and investments.

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The carrying amount of the consolidated Variable Interest Entity's assets included in the reporting entity's statement of financial position within prepayments and other current assets.

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The excise taxes collected by a public utility and reported in revenues if the amount of excise taxes is equal to 1 percent or more of such total.

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Total of Stockholders' Equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity including portions attributable to both the parent and noncontrolling interests (previously referred to as minority interest), if any. The entity including portions attributable to the parent and noncontrolling interests is sometimes referred to as the economic entity. This excludes temporary equity and is sometimes called permanent equity.

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The amount of expense between the reporting entity and the Variable Interest Entity (VIE).

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The reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).

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