Variable Interest Entities	12 Months Ended
Dec. 31, 2013
Variable Interest Entities [Line Items]
Variable Interest Entities	22. Variable Interest Entities (PPL and PPL Energy Supply) In December 2001, a subsidiary of PPL Energy Supply entered into a $455 million operating lease arrangement, as lessee, for the development, construction and operation of a gas-fired combined-cycle generation facility located in Lower Mt. Bethel Township, Northampton County, Pennsylvania. The owner/lessor of this generation facility, LMB Funding, LP, was created to own/lease the facility and incur the related financing costs. The initial lease term commenced on the date of commercial operation, which occurred in May 2004, and ended in December 2013. Under a residual value guarantee, if the generation facility was sold at the end of the lease term and the cash proceeds from the sale were less than the original acquisition cost, the subsidiary of PPL Energy Supply was obligated to pay up to 70.52% of the original acquisition cost. This residual value guarantee protected the other variable interest holders from losses related to their investments. LMB Funding, LP could not extend or cancel the lease or sell the facility without the prior consent of the PPL Energy Supply subsidiary. As a result, LMB Funding, LP was determined to be a VIE and the subsidiary of PPL Energy Supply was considered the primary beneficiary that consolidated this VIE. The lease financing, which included $437 million of debt and $18 million of "Noncontrolling interests" was secured by, among other things, the generation facility, the carrying amount of which is disclosed on the Balance Sheet. As a result of the consolidation, PPL Energy Supply recorded interest expense in lieu of rent expense. For 2013, 2012 and 2011, additional depreciation on the generation facility of $12 million, $16 million and $16 million was recorded. A subsidiary of PPL Energy Supply purchased the Lower Mt. Bethel plant for $455 million at the lease termination date in December 2013. The proceeds were used by LMB Funding, LP to repay $437 million of outstanding debt and make an $18 million distribution to its equity investors both of which have been included in the PPL and PPL Energy Supply Consolidated Statements of Cash Flows as financing activities. The transaction was treated as a transfer of assets between entities under common control and did not result in any change to the presentation of the Lower Mt. Bethel plant assets as they had previously been included in PPL's and PPL Energy Supply's consolidated financial statements. Subsequent to these transactions, the PPL Energy Supply subsidiary no longer has a variable interest in and is no longer the primary beneficiary of LMB Funding, LP. Accordingly, LMB Funding, LP was deconsolidated, which had no impact on PPL's and PPL Energy Supply's consolidated financial statements.
PPL Energy Supply LLC [Member]
Variable Interest Entities [Line Items]
Variable Interest Entities	22. Variable Interest Entities (PPL and PPL Energy Supply) In December 2001, a subsidiary of PPL Energy Supply entered into a $455 million operating lease arrangement, as lessee, for the development, construction and operation of a gas-fired combined-cycle generation facility located in Lower Mt. Bethel Township, Northampton County, Pennsylvania. The owner/lessor of this generation facility, LMB Funding, LP, was created to own/lease the facility and incur the related financing costs. The initial lease term commenced on the date of commercial operation, which occurred in May 2004, and ended in December 2013. Under a residual value guarantee, if the generation facility was sold at the end of the lease term and the cash proceeds from the sale were less than the original acquisition cost, the subsidiary of PPL Energy Supply was obligated to pay up to 70.52% of the original acquisition cost. This residual value guarantee protected the other variable interest holders from losses related to their investments. LMB Funding, LP could not extend or cancel the lease or sell the facility without the prior consent of the PPL Energy Supply subsidiary. As a result, LMB Funding, LP was determined to be a VIE and the subsidiary of PPL Energy Supply was considered the primary beneficiary that consolidated this VIE. The lease financing, which included $437 million of debt and $18 million of "Noncontrolling interests" was secured by, among other things, the generation facility, the carrying amount of which is disclosed on the Balance Sheet. As a result of the consolidation, PPL Energy Supply recorded interest expense in lieu of rent expense. For 2013, 2012 and 2011, additional depreciation on the generation facility of $12 million, $16 million and $16 million was recorded. A subsidiary of PPL Energy Supply purchased the Lower Mt. Bethel plant for $455 million at the lease termination date in December 2013. The proceeds were used by LMB Funding, LP to repay $437 million of outstanding debt and make an $18 million distribution to its equity investors both of which have been included in the PPL and PPL Energy Supply Consolidated Statements of Cash Flows as financing activities. The transaction was treated as a transfer of assets between entities under common control and did not result in any change to the presentation of the Lower Mt. Bethel plant assets as they had previously been included in PPL's and PPL Energy Supply's consolidated financial statements. Subsequent to these transactions, the PPL Energy Supply subsidiary no longer has a variable interest in and is no longer the primary beneficiary of LMB Funding, LP. Accordingly, LMB Funding, LP was deconsolidated, which had no impact on PPL's and PPL Energy Supply's consolidated financial statements.

Variable Interest Entities

12 Months Ended

Dec. 31, 2013

Variable Interest Entities [Line Items]

22. Variable Interest Entities

(PPL and PPL Energy Supply)

In December 2001, a subsidiary of PPL Energy Supply entered into a $455 million operating lease arrangement, as lessee, for the development, construction and operation of a gas-fired combined-cycle generation facility located in Lower Mt. Bethel Township, Northampton County, Pennsylvania. The owner/lessor of this generation facility, LMB Funding, LP, was created to own/lease the facility and incur the related financing costs. The initial lease term commenced on the date of commercial operation, which occurred in May 2004, and ended in December 2013. Under a residual value guarantee, if the generation facility was sold at the end of the lease term and the cash proceeds from the sale were less than the original acquisition cost, the subsidiary of PPL Energy Supply was obligated to pay up to 70.52% of the original acquisition cost. This residual value guarantee protected the other variable interest holders from losses related to their investments. LMB Funding, LP could not extend or cancel the lease or sell the facility without the prior consent of the PPL Energy Supply subsidiary. As a result, LMB Funding, LP was determined to be a VIE and the subsidiary of PPL Energy Supply was considered the primary beneficiary that consolidated this VIE.

The lease financing, which included $437 million of debt and $18 million of "Noncontrolling interests" was secured by, among other things, the generation facility, the carrying amount of which is disclosed on the Balance Sheet. As a result of the consolidation, PPL Energy Supply recorded interest expense in lieu of rent expense. For 2013, 2012 and 2011, additional depreciation on the generation facility of $12 million, $16 million and $16 million was recorded.

A subsidiary of PPL Energy Supply purchased the Lower Mt. Bethel plant for $455 million at the lease termination date in December 2013. The proceeds were used by LMB Funding, LP to repay $437 million of outstanding debt and make an $18 million distribution to its equity investors both of which have been included in the PPL and PPL Energy Supply Consolidated Statements of Cash Flows as financing activities. The transaction was treated as a transfer of assets between entities under common control and did not result in any change to the presentation of the Lower Mt. Bethel plant assets as they had previously been included in PPL's and PPL Energy Supply's consolidated financial statements.

Subsequent to these transactions, the PPL Energy Supply subsidiary no longer has a variable interest in and is no longer the primary beneficiary of LMB Funding, LP. Accordingly, LMB Funding, LP was deconsolidated, which had no impact on PPL's and PPL Energy Supply's consolidated financial statements.

PPL Energy Supply LLC [Member]

Variable Interest Entities [Line Items]

Variable Interest Entities

22. Variable Interest Entities

(PPL and PPL Energy Supply)