New Accounting Guidance Pending Adoption	3 Months Ended
Mar. 31, 2012
New Accounting Guidance Pending Adoption [Abstract]
New Accounting Guidance Pending Adoption	18. New Accounting Guidance Pending Adoption (PPL, PPL Energy Supply, PPL Electric, LKE, LG&E and KU) Improving Disclosures about Offsetting Balance Sheet Items Effective January 1, 2013, the Registrants will retrospectively adopt accounting guidance issued to enhance disclosures about financial instruments and derivative instruments that either (1) offset on the balance sheet or (2) are subject to an enforceable master netting arrangement or similar agreement, irrespective of whether they are offset on the balance sheet. Upon adoption, the enhanced disclosure requirements are not expected to have a significant impact on the Registrants.

The entire disclosure for a new accounting pronouncement that has been issued but not yet adopted.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 11

-Section M

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 250

-SubTopic 10

-Section S99

-Paragraph 5

-Subparagraph (SAB TOPIC 11.M)

-URI http://asc.fasb.org/extlink&oid=6369664&loc=d3e31137-122693

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