Summary of Significant Accounting Policies (Policies)	6 Months Ended
Jun. 30, 2011
Notes To Financial Statements [Abstract]
Business and Consolidation	Business and Consolidation (PPL) As noted above, on April 1, 2011, PPL, through its indirect, wholly owned subsidiary PPL WEM, completed the acquisition of WPD Midlands. PPL is consolidating WPD Midlands on a one-month lag. Material intervening events, such as debt issuances that occur in the lag period, are recognized in the current period financial statements. Events that are significant but not material are disclosed. See Note 8 for additional information.
Accounts Receivable	Accounts Receivable (PPL, PPL Energy Supply and PPL Electric) PPL Electric's customers may elect to procure generation supply from an alternative supplier. As a result of a PUC-approved purchase of accounts receivable program, PPL Electric has purchased certain accounts receivable from alternative suppliers at a nominal discount, which reflects a provision for uncollectible accounts. The alternative suppliers (including PPL Electric's affiliate, PPL EnergyPlus) have no continuing involvement or interest in the purchased accounts receivable. The purchased accounts receivable are initially recorded at fair value using a market approach based on the purchase price paid and are classified as Level 2 in the fair value hierarchy. PPL Electric receives a nominal fee for administering its program. During the three and six months ended June 30, 2011, PPL Electric purchased $187 million and $452 million of accounts receivable from unaffiliated third parties and $57 million and $120 million from its affiliate, PPL EnergyPlus. During the three and six months ended June 30, 2010, PPL Electric purchased $149 million and $225 million of accounts receivable from unaffiliated third parties and $58 million and $91 million from its affiliate, PPL EnergyPlus.
Regulation	Regulation (PPL, PPL Electric, LKE, LG&E and KU) The electricity distribution subsidiaries of PPL WW and PPL WEM are not subject to accounting for the effects of certain types of regulation as prescribed by GAAP, as their operations do not meet the requirements for such accounting guidance. However, PPL Electric, LG&E and KU all apply this accounting guidance.

Describes an entity's accounting policy regarding (1) the principles it follows in consolidating or combining the separate financial statements, including the principles followed in determining the inclusion or exclusion of subsidiaries or other entities in the consolidated or combined financial statements and (2) its treatment of interests (for example common stock, a partnership interest or other means of exerting influence) in other entities, for example consolidation or use of the equity or cost methods of accounting. An entity also may describe its accounting treatment for intercompany accounts and transactions, noncontrolling interest, and the income statement treatment in consolidation for issuances of stock by a subsidiary.

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May be used as a block of text to describe all the accounting policies unique to utilities. Examples include a discussion about the scope criteria and appropriateness for and extent of the application of FAS 71 (may include identification of specific business units). Other examples of the disclosures may include: descriptions of the form and economic effects of regulation (for example, recording of regulatory assets and liabilities to the rate setting process); statement about periodic assessments of FAS 71 applicability; information regarding amortization of and return on regulatory assets and liabilities, including the remaining amounts and recovery or settlement periods; accounting for changes to recovery estimates; AFUDC, plant abandonment's and plant disallowances.

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- Definition

Describes an entity's accounting policy for trade and other accounts receivable, and finance, loan and lease receivables, including those classified as held for investment and held for sale. This disclosure may include (1) the basis at which such receivables are carried in the entity's statements of financial position (2) how the level of the valuation allowance for receivables is determined (3) when impairments, charge-offs or recoveries are recognized for such receivables (4) the treatment of origination fees and costs, including the amortization method for net deferred fees or costs (5) the treatment of any premiums or discounts or unearned income (6) the entity's income recognition policies for such receivables, including those that are impaired, past due or placed on nonaccrual status and (7) the treatment of foreclosures or repossessions (8) the nature and amount of any guarantees to repurchase receivables.

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