Retirement and Postemployment Benefits (Plan Assets and Expected Cash Flows) (Details) (USD $)
In Millions, unless otherwise specified |
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Dec. 31, 2012
Master Trust [Member]
Other Debt Securities [Member]
Level 3 [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
|
Dec. 31, 2011
Pension Benefits United States [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
Integer
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
Level 1 [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
Level 1 [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
Level 2 [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
Level 2 [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
Level 3 [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
Level 3 [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
Cash And Cash Equivalents [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
Cash And Cash Equivalents [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
Cash And Cash Equivalents [Member]
Level 1 [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
Cash And Cash Equivalents [Member]
Level 1 [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
Cash And Cash Equivalents [Member]
Level 2 [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
Cash And Cash Equivalents [Member]
Level 2 [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
Cash And Cash Equivalents [Member]
Level 3 [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
Cash And Cash Equivalents [Member]
Level 3 [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
United States Large Cap Equity Securities [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
United States Large Cap Equity Securities [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
United States Large Cap Equity Securities [Member]
Level 1 [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
United States Large Cap Equity Securities [Member]
Level 1 [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
United States Large Cap Equity Securities [Member]
Level 2 [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
United States Large Cap Equity Securities [Member]
Level 2 [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
United States Large Cap Equity Securities [Member]
Level 3 [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
United States Large Cap Equity Securities [Member]
Level 3 [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
United States Small Cap Equity Securities [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
United States Small Cap Equity Securities [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
United States Small Cap Equity Securities [Member]
Level 1 [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
United States Small Cap Equity Securities [Member]
Level 1 [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
United States Small Cap Equity Securities [Member]
Level 2 [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
United States Small Cap Equity Securities [Member]
Level 2 [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
United States Small Cap Equity Securities [Member]
Level 3 [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
United States Small Cap Equity Securities [Member]
Level 3 [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
United States Commingled Debt Equity Securities [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
United States Commingled Debt Equity Securities [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
United States Commingled Debt Equity Securities [Member]
Level 1 [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
United States Commingled Debt Equity Securities [Member]
Level 1 [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
United States Commingled Debt Equity Securities [Member]
Level 2 [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
United States Commingled Debt Equity Securities [Member]
Level 2 [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
United States Commingled Debt Equity Securities [Member]
Level 3 [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
United States Commingled Debt Equity Securities [Member]
Level 3 [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
International Equity Securities [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
International Equity Securities [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
International Equity Securities [Member]
Level 1 [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
International Equity Securities [Member]
Level 1 [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
International Equity Securities [Member]
Level 2 [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
International Equity Securities [Member]
Level 2 [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
International Equity Securities [Member]
Level 3 [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
International Equity Securities [Member]
Level 3 [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
US Treasury And US Government Sponsored Agency Debt Securities [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
US Treasury And US Government Sponsored Agency Debt Securities [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
US Treasury And US Government Sponsored Agency Debt Securities [Member]
Level 1 [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
US Treasury And US Government Sponsored Agency Debt Securities [Member]
Level 1 [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
US Treasury And US Government Sponsored Agency Debt Securities [Member]
Level 2 [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
US Treasury And US Government Sponsored Agency Debt Securities [Member]
Level 2 [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
US Treasury And US Government Sponsored Agency Debt Securities [Member]
Level 3 [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
US Treasury And US Government Sponsored Agency Debt Securities [Member]
Level 3 [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
Residential - Commercial Backed Debt Securities [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
Residential - Commercial Backed Debt Securities [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
Residential - Commercial Backed Debt Securities [Member]
Level 1 [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
Residential - Commercial Backed Debt Securities [Member]
Level 1 [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
Residential - Commercial Backed Debt Securities [Member]
Level 2 [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
Residential - Commercial Backed Debt Securities [Member]
Level 2 [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
Residential - Commercial Backed Debt Securities [Member]
Level 3 [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
Residential - Commercial Backed Debt Securities [Member]
Level 3 [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
Corporate Debt Securities [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
Corporate Debt Securities [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
Corporate Debt Securities [Member]
Level 1 [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
Corporate Debt Securities [Member]
Level 1 [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
Corporate Debt Securities [Member]
Level 2 [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
Corporate Debt Securities [Member]
Level 2 [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
Corporate Debt Securities [Member]
Level 3 [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
Corporate Debt Securities [Member]
Level 3 [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
Other Debt Securities [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
Other Debt Securities [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
Other Debt Securities [Member]
Level 1 [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
Other Debt Securities [Member]
Level 1 [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
Other Debt Securities [Member]
Level 2 [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
Other Debt Securities [Member]
Level 2 [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
Other Debt Securities [Member]
Level 3 [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
Other Debt Securities [Member]
Level 3 [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
International Debt Securities [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
International Debt Securities [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
International Debt Securities [Member]
Level 1 [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
International Debt Securities [Member]
Level 1 [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
International Debt Securities [Member]
Level 2 [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
International Debt Securities [Member]
Level 2 [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
International Debt Securities [Member]
Level 3 [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
International Debt Securities [Member]
Level 3 [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
Commodities Alternative Investments [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
Commodities Alternative Investments [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
Commodities Alternative Investments [Member]
Level 1 [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
Commodities Alternative Investments [Member]
Level 1 [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
Commodities Alternative Investments [Member]
Level 2 [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
Commodities Alternative Investments [Member]
Level 2 [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
Commodities Alternative Investments [Member]
Level 3 [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
Commodities Alternative Investments [Member]
Level 3 [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
Real Estate Alternative Investments [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
Real Estate Alternative Investments [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
Real Estate Alternative Investments [Member]
Level 1 [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
Real Estate Alternative Investments [Member]
Level 1 [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
Real Estate Alternative Investments [Member]
Level 2 [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
Real Estate Alternative Investments [Member]
Level 2 [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
Real Estate Alternative Investments [Member]
Level 3 [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
Real Estate Alternative Investments [Member]
Level 3 [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
Private Equity Alternative Investments [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
Private Equity Alternative Investments [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
Private Equity Alternative Investments [Member]
Level 1 [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
Private Equity Alternative Investments [Member]
Level 1 [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
Private Equity Alternative Investments [Member]
Level 2 [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
Private Equity Alternative Investments [Member]
Level 2 [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
Private Equity Alternative Investments [Member]
Level 3 [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
Private Equity Alternative Investments [Member]
Level 3 [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
Hedge Fund Of Funds Alternative Investments [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
Hedge Fund Of Funds Alternative Investments [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
Hedge Fund Of Funds Alternative Investments [Member]
Level 1 [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
Hedge Fund Of Funds Alternative Investments [Member]
Level 1 [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
Hedge Fund Of Funds Alternative Investments [Member]
Level 2 [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
Hedge Fund Of Funds Alternative Investments [Member]
Level 2 [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
Hedge Fund Of Funds Alternative Investments [Member]
Level 3 [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
Hedge Fund Of Funds Alternative Investments [Member]
Level 3 [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
Other Derivatives [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
Other Derivatives [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
Other Derivatives [Member]
Level 1 [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
Other Derivatives [Member]
Level 1 [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
Other Derivatives [Member]
Level 2 [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
Other Derivatives [Member]
Level 2 [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
Other Derivatives [Member]
Level 3 [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
Other Derivatives [Member]
Level 3 [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
Interest Rate Swaps Derivatives [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
Interest Rate Swaps Derivatives [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
Interest Rate Swaps Derivatives [Member]
Level 1 [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
Interest Rate Swaps Derivatives [Member]
Level 1 [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
Interest Rate Swaps Derivatives [Member]
Level 2 [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
Interest Rate Swaps Derivatives [Member]
Level 2 [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
Interest Rate Swaps Derivatives [Member]
Level 3 [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
Interest Rate Swaps Derivatives [Member]
Level 3 [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
Insurance Contracts [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
Insurance Contracts [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
Insurance Contracts [Member]
Level 1 [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
Insurance Contracts [Member]
Level 1 [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
Insurance Contracts [Member]
Level 2 [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
Insurance Contracts [Member]
Level 2 [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
Insurance Contracts [Member]
Level 3 [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
Insurance Contracts [Member]
Level 3 [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
Receivables And Payables Net [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
Receivables And Payables Net [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
Account 401 H [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
Account 401 H [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
Total Trust Assets Not Including 401 H Assets [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
Total Trust Assets Not Including 401 H Assets [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
Growth Portfolio [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
Growth Portfolio [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
Growth Portfolio [Member]
Equity Securities [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
Growth Portfolio [Member]
Equity Securities [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
Growth Portfolio [Member]
Debt Securities [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
Growth Portfolio [Member]
Debt Securities [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
Growth Portfolio [Member]
Alternative Investments [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
Growth Portfolio [Member]
Alternative Investments [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
Immunizing Portfolio [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
Immunizing Portfolio [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
Immunizing Portfolio [Member]
Debt Securities [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
Immunizing Portfolio [Member]
Debt Securities [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
Immunizing Portfolio [Member]
Derivatives [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
Immunizing Portfolio [Member]
Derivatives [Member]
|
Dec. 31, 2013
Pension Benefits United States [Member]
Master Trust [Member]
Liquidity Portfolio [Member]
|
Dec. 31, 2012
Pension Benefits United States [Member]
Master Trust [Member]
Liquidity Portfolio [Member]
|
Dec. 31, 2013
Pension Benefits United Kingdom [Member]
Integer
|
Dec. 31, 2012
Pension Benefits United Kingdom [Member]
|
Dec. 31, 2011
Pension Benefits United Kingdom [Member]
|
Dec. 31, 2013
Pension Benefits United Kingdom [Member]
Level 1 [Member]
|
Dec. 31, 2012
Pension Benefits United Kingdom [Member]
Level 1 [Member]
|
Dec. 31, 2013
Pension Benefits United Kingdom [Member]
Level 2 [Member]
|
Dec. 31, 2012
Pension Benefits United Kingdom [Member]
Level 2 [Member]
|
Dec. 31, 2013
Pension Benefits United Kingdom [Member]
Level 3 [Member]
|
Dec. 31, 2012
Pension Benefits United Kingdom [Member]
Level 3 [Member]
|
Dec. 31, 2013
Pension Benefits United Kingdom [Member]
Cash And Cash Equivalents [Member]
|
Dec. 31, 2012
Pension Benefits United Kingdom [Member]
Cash And Cash Equivalents [Member]
|
Dec. 31, 2013
Pension Benefits United Kingdom [Member]
Cash And Cash Equivalents [Member]
Level 1 [Member]
|
Dec. 31, 2012
Pension Benefits United Kingdom [Member]
Cash And Cash Equivalents [Member]
Level 1 [Member]
|
Dec. 31, 2013
Pension Benefits United Kingdom [Member]
Cash And Cash Equivalents [Member]
Level 2 [Member]
|
Dec. 31, 2012
Pension Benefits United Kingdom [Member]
Cash And Cash Equivalents [Member]
Level 2 [Member]
|
Dec. 31, 2013
Pension Benefits United Kingdom [Member]
Cash And Cash Equivalents [Member]
Level 3 [Member]
|
Dec. 31, 2012
Pension Benefits United Kingdom [Member]
Cash And Cash Equivalents [Member]
Level 3 [Member]
|
Dec. 31, 2013
Pension Benefits United Kingdom [Member]
UK Companies Equity Securities [Member]
|
Dec. 31, 2012
Pension Benefits United Kingdom [Member]
UK Companies Equity Securities [Member]
|
Dec. 31, 2013
Pension Benefits United Kingdom [Member]
UK Companies Equity Securities [Member]
Level 1 [Member]
|
Dec. 31, 2012
Pension Benefits United Kingdom [Member]
UK Companies Equity Securities [Member]
Level 1 [Member]
|
Dec. 31, 2013
Pension Benefits United Kingdom [Member]
UK Companies Equity Securities [Member]
Level 2 [Member]
|
Dec. 31, 2012
Pension Benefits United Kingdom [Member]
UK Companies Equity Securities [Member]
Level 2 [Member]
|
Dec. 31, 2013
Pension Benefits United Kingdom [Member]
UK Companies Equity Securities [Member]
Level 3 [Member]
|
Dec. 31, 2012
Pension Benefits United Kingdom [Member]
UK Companies Equity Securities [Member]
Level 3 [Member]
|
Dec. 31, 2013
Pension Benefits United Kingdom [Member]
European Companies Excluding UK Equity Securities [Member]
|
Dec. 31, 2012
Pension Benefits United Kingdom [Member]
European Companies Excluding UK Equity Securities [Member]
|
Dec. 31, 2013
Pension Benefits United Kingdom [Member]
European Companies Excluding UK Equity Securities [Member]
Level 1 [Member]
|
Dec. 31, 2012
Pension Benefits United Kingdom [Member]
European Companies Excluding UK Equity Securities [Member]
Level 1 [Member]
|
Dec. 31, 2013
Pension Benefits United Kingdom [Member]
European Companies Excluding UK Equity Securities [Member]
Level 2 [Member]
|
Dec. 31, 2012
Pension Benefits United Kingdom [Member]
European Companies Excluding UK Equity Securities [Member]
Level 2 [Member]
|
Dec. 31, 2013
Pension Benefits United Kingdom [Member]
European Companies Excluding UK Equity Securities [Member]
Level 3 [Member]
|
Dec. 31, 2012
Pension Benefits United Kingdom [Member]
European Companies Excluding UK Equity Securities [Member]
Level 3 [Member]
|
Dec. 31, 2013
Pension Benefits United Kingdom [Member]
Asian Pacific Companies Equity Securities [Member]
|
Dec. 31, 2012
Pension Benefits United Kingdom [Member]
Asian Pacific Companies Equity Securities [Member]
|
Dec. 31, 2013
Pension Benefits United Kingdom [Member]
Asian Pacific Companies Equity Securities [Member]
Level 1 [Member]
|
Dec. 31, 2012
Pension Benefits United Kingdom [Member]
Asian Pacific Companies Equity Securities [Member]
Level 1 [Member]
|
Dec. 31, 2013
Pension Benefits United Kingdom [Member]
Asian Pacific Companies Equity Securities [Member]
Level 2 [Member]
|
Dec. 31, 2012
Pension Benefits United Kingdom [Member]
Asian Pacific Companies Equity Securities [Member]
Level 2 [Member]
|
Dec. 31, 2013
Pension Benefits United Kingdom [Member]
Asian Pacific Companies Equity Securities [Member]
Level 3 [Member]
|
Dec. 31, 2012
Pension Benefits United Kingdom [Member]
Asian Pacific Companies Equity Securities [Member]
Level 3 [Member]
|
Dec. 31, 2013
Pension Benefits United Kingdom [Member]
North American Companies Equity Securities [Member]
|
Dec. 31, 2012
Pension Benefits United Kingdom [Member]
North American Companies Equity Securities [Member]
|
Dec. 31, 2013
Pension Benefits United Kingdom [Member]
North American Companies Equity Securities [Member]
Level 1 [Member]
|
Dec. 31, 2012
Pension Benefits United Kingdom [Member]
North American Companies Equity Securities [Member]
Level 1 [Member]
|
Dec. 31, 2013
Pension Benefits United Kingdom [Member]
North American Companies Equity Securities [Member]
Level 2 [Member]
|
Dec. 31, 2012
Pension Benefits United Kingdom [Member]
North American Companies Equity Securities [Member]
Level 2 [Member]
|
Dec. 31, 2013
Pension Benefits United Kingdom [Member]
North American Companies Equity Securities [Member]
Level 3 [Member]
|
Dec. 31, 2012
Pension Benefits United Kingdom [Member]
North American Companies Equity Securities [Member]
Level 3 [Member]
|
Dec. 31, 2013
Pension Benefits United Kingdom [Member]
Emerging Markets Companies Equity Securities [Member]
|
Dec. 31, 2012
Pension Benefits United Kingdom [Member]
Emerging Markets Companies Equity Securities [Member]
|
Dec. 31, 2013
Pension Benefits United Kingdom [Member]
Emerging Markets Companies Equity Securities [Member]
Level 1 [Member]
|
Dec. 31, 2012
Pension Benefits United Kingdom [Member]
Emerging Markets Companies Equity Securities [Member]
Level 1 [Member]
|
Dec. 31, 2013
Pension Benefits United Kingdom [Member]
Emerging Markets Companies Equity Securities [Member]
Level 2 [Member]
|
Dec. 31, 2012
Pension Benefits United Kingdom [Member]
Emerging Markets Companies Equity Securities [Member]
Level 2 [Member]
|
Dec. 31, 2013
Pension Benefits United Kingdom [Member]
Emerging Markets Companies Equity Securities [Member]
Level 3 [Member]
|
Dec. 31, 2012
Pension Benefits United Kingdom [Member]
Emerging Markets Companies Equity Securities [Member]
Level 3 [Member]
|
Dec. 31, 2013
Pension Benefits United Kingdom [Member]
Global Equities Equity Securities [Member]
|
Dec. 31, 2012
Pension Benefits United Kingdom [Member]
Global Equities Equity Securities [Member]
|
Dec. 31, 2013
Pension Benefits United Kingdom [Member]
Global Equities Equity Securities [Member]
Level 1 [Member]
|
Dec. 31, 2012
Pension Benefits United Kingdom [Member]
Global Equities Equity Securities [Member]
Level 1 [Member]
|
Dec. 31, 2013
Pension Benefits United Kingdom [Member]
Global Equities Equity Securities [Member]
Level 2 [Member]
|
Dec. 31, 2012
Pension Benefits United Kingdom [Member]
Global Equities Equity Securities [Member]
Level 2 [Member]
|
Dec. 31, 2013
Pension Benefits United Kingdom [Member]
Global Equities Equity Securities [Member]
Level 3 [Member]
|
Dec. 31, 2012
Pension Benefits United Kingdom [Member]
Global Equities Equity Securities [Member]
Level 3 [Member]
|
Dec. 31, 2013
Pension Benefits United Kingdom [Member]
Currency Equity Securities [Member]
|
Dec. 31, 2012
Pension Benefits United Kingdom [Member]
Currency Equity Securities [Member]
|
Dec. 31, 2013
Pension Benefits United Kingdom [Member]
Currency Equity Securities [Member]
Level 1 [Member]
|
Dec. 31, 2012
Pension Benefits United Kingdom [Member]
Currency Equity Securities [Member]
Level 1 [Member]
|
Dec. 31, 2013
Pension Benefits United Kingdom [Member]
Currency Equity Securities [Member]
Level 2 [Member]
|
Dec. 31, 2012
Pension Benefits United Kingdom [Member]
Currency Equity Securities [Member]
Level 2 [Member]
|
Dec. 31, 2013
Pension Benefits United Kingdom [Member]
Currency Equity Securities [Member]
Level 3 [Member]
|
Dec. 31, 2012
Pension Benefits United Kingdom [Member]
Currency Equity Securities [Member]
Level 3 [Member]
|
Dec. 31, 2013
Pension Benefits United Kingdom [Member]
Global Tactical Asset Allocation Equity Securities [Member]
|
Dec. 31, 2012
Pension Benefits United Kingdom [Member]
Global Tactical Asset Allocation Equity Securities [Member]
|
Dec. 31, 2013
Pension Benefits United Kingdom [Member]
Global Tactical Asset Allocation Equity Securities [Member]
Level 1 [Member]
|
Dec. 31, 2012
Pension Benefits United Kingdom [Member]
Global Tactical Asset Allocation Equity Securities [Member]
Level 1 [Member]
|
Dec. 31, 2013
Pension Benefits United Kingdom [Member]
Global Tactical Asset Allocation Equity Securities [Member]
Level 2 [Member]
|
Dec. 31, 2012
Pension Benefits United Kingdom [Member]
Global Tactical Asset Allocation Equity Securities [Member]
Level 2 [Member]
|
Dec. 31, 2013
Pension Benefits United Kingdom [Member]
Global Tactical Asset Allocation Equity Securities [Member]
Level 3 [Member]
|
Dec. 31, 2012
Pension Benefits United Kingdom [Member]
Global Tactical Asset Allocation Equity Securities [Member]
Level 3 [Member]
|
Dec. 31, 2013
Pension Benefits United Kingdom [Member]
UK Corporate Bonds Commingled Debt Equity Securities [Member]
|
Dec. 31, 2012
Pension Benefits United Kingdom [Member]
UK Corporate Bonds Commingled Debt Equity Securities [Member]
|
Dec. 31, 2013
Pension Benefits United Kingdom [Member]
UK Corporate Bonds Commingled Debt Equity Securities [Member]
Level 1 [Member]
|
Dec. 31, 2012
Pension Benefits United Kingdom [Member]
UK Corporate Bonds Commingled Debt Equity Securities [Member]
Level 1 [Member]
|
Dec. 31, 2013
Pension Benefits United Kingdom [Member]
UK Corporate Bonds Commingled Debt Equity Securities [Member]
Level 2 [Member]
|
Dec. 31, 2012
Pension Benefits United Kingdom [Member]
UK Corporate Bonds Commingled Debt Equity Securities [Member]
Level 2 [Member]
|
Dec. 31, 2013
Pension Benefits United Kingdom [Member]
UK Corporate Bonds Commingled Debt Equity Securities [Member]
Level 3 [Member]
|
Dec. 31, 2012
Pension Benefits United Kingdom [Member]
UK Corporate Bonds Commingled Debt Equity Securities [Member]
Level 3 [Member]
|
Dec. 31, 2013
Pension Benefits United Kingdom [Member]
UK Gilts Commingled Debt Equity Securities [Member]
|
Dec. 31, 2012
Pension Benefits United Kingdom [Member]
UK Gilts Commingled Debt Equity Securities [Member]
|
Dec. 31, 2013
Pension Benefits United Kingdom [Member]
UK Gilts Commingled Debt Equity Securities [Member]
Level 1 [Member]
|
Dec. 31, 2012
Pension Benefits United Kingdom [Member]
UK Gilts Commingled Debt Equity Securities [Member]
Level 1 [Member]
|
Dec. 31, 2013
Pension Benefits United Kingdom [Member]
UK Gilts Commingled Debt Equity Securities [Member]
Level 2 [Member]
|
Dec. 31, 2012
Pension Benefits United Kingdom [Member]
UK Gilts Commingled Debt Equity Securities [Member]
Level 2 [Member]
|
Dec. 31, 2013
Pension Benefits United Kingdom [Member]
UK Gilts Commingled Debt Equity Securities [Member]
Level 3 [Member]
|
Dec. 31, 2012
Pension Benefits United Kingdom [Member]
UK Gilts Commingled Debt Equity Securities [Member]
Level 3 [Member]
|
Dec. 31, 2013
Pension Benefits United Kingdom [Member]
Debt Securities [Member]
|
Dec. 31, 2012
Pension Benefits United Kingdom [Member]
Debt Securities [Member]
|
Dec. 31, 2013
Pension Benefits United Kingdom [Member]
Alternative Investments [Member]
|
Dec. 31, 2012
Pension Benefits United Kingdom [Member]
Alternative Investments [Member]
|
Dec. 31, 2013
Pension Benefits United Kingdom [Member]
Real Estate Alternative Investments [Member]
|
Dec. 31, 2012
Pension Benefits United Kingdom [Member]
Real Estate Alternative Investments [Member]
|
Dec. 31, 2013
Pension Benefits United Kingdom [Member]
Real Estate Alternative Investments [Member]
Level 1 [Member]
|
Dec. 31, 2012
Pension Benefits United Kingdom [Member]
Real Estate Alternative Investments [Member]
Level 1 [Member]
|
Dec. 31, 2013
Pension Benefits United Kingdom [Member]
Real Estate Alternative Investments [Member]
Level 2 [Member]
|
Dec. 31, 2012
Pension Benefits United Kingdom [Member]
Real Estate Alternative Investments [Member]
Level 2 [Member]
|
Dec. 31, 2013
Pension Benefits United Kingdom [Member]
Real Estate Alternative Investments [Member]
Level 3 [Member]
|
Dec. 31, 2012
Pension Benefits United Kingdom [Member]
Real Estate Alternative Investments [Member]
Level 3 [Member]
|
Dec. 31, 2013
Other Postretirement Benefits United States [Member]
|
Dec. 31, 2012
Other Postretirement Benefits United States [Member]
|
Dec. 31, 2011
Other Postretirement Benefits United States [Member]
|
Dec. 31, 2013
Other Postretirement Benefits United States [Member]
Cash And Cash Equivalents [Member]
|
Dec. 31, 2012
Other Postretirement Benefits United States [Member]
Cash And Cash Equivalents [Member]
|
Dec. 31, 2013
Other Postretirement Benefits United States [Member]
Money Market Funds [Member]
Integer
|
Dec. 31, 2013
Other Postretirement Benefits United States [Member]
Money Market Funds [Member]
Level 1 [Member]
|
Dec. 31, 2012
Other Postretirement Benefits United States [Member]
Money Market Funds [Member]
Level 1 [Member]
|
Dec. 31, 2013
Other Postretirement Benefits United States [Member]
Money Market Funds [Member]
Level 2 [Member]
|
Dec. 31, 2012
Other Postretirement Benefits United States [Member]
Money Market Funds [Member]
Level 2 [Member]
|
Dec. 31, 2013
Other Postretirement Benefits United States [Member]
Money Market Funds [Member]
Level 3 [Member]
|
Dec. 31, 2012
Other Postretirement Benefits United States [Member]
Money Market Funds [Member]
Level 3 [Member]
|
Dec. 31, 2013
Other Postretirement Benefits United States [Member]
Equity Securities [Member]
|
Dec. 31, 2012
Other Postretirement Benefits United States [Member]
Equity Securities [Member]
|
Dec. 31, 2013
Other Postretirement Benefits United States [Member]
United States Large Cap Equity Securities [Member]
|
Dec. 31, 2012
Other Postretirement Benefits United States [Member]
United States Large Cap Equity Securities [Member]
|
Dec. 31, 2013
Other Postretirement Benefits United States [Member]
United States Large Cap Equity Securities [Member]
Level 1 [Member]
|
Dec. 31, 2012
Other Postretirement Benefits United States [Member]
United States Large Cap Equity Securities [Member]
Level 1 [Member]
|
Dec. 31, 2013
Other Postretirement Benefits United States [Member]
United States Large Cap Equity Securities [Member]
Level 2 [Member]
|
Dec. 31, 2012
Other Postretirement Benefits United States [Member]
United States Large Cap Equity Securities [Member]
Level 2 [Member]
|
Dec. 31, 2013
Other Postretirement Benefits United States [Member]
United States Large Cap Equity Securities [Member]
Level 3 [Member]
|
Dec. 31, 2012
Other Postretirement Benefits United States [Member]
United States Large Cap Equity Securities [Member]
Level 3 [Member]
|
Dec. 31, 2013
Other Postretirement Benefits United States [Member]
United States Commingled Debt Equity Securities [Member]
|
Dec. 31, 2012
Other Postretirement Benefits United States [Member]
United States Commingled Debt Equity Securities [Member]
|
Dec. 31, 2013
Other Postretirement Benefits United States [Member]
United States Commingled Debt Equity Securities [Member]
Level 1 [Member]
|
Dec. 31, 2012
Other Postretirement Benefits United States [Member]
United States Commingled Debt Equity Securities [Member]
Level 1 [Member]
|
Dec. 31, 2013
Other Postretirement Benefits United States [Member]
United States Commingled Debt Equity Securities [Member]
Level 2 [Member]
|
Dec. 31, 2012
Other Postretirement Benefits United States [Member]
United States Commingled Debt Equity Securities [Member]
Level 2 [Member]
|
Dec. 31, 2013
Other Postretirement Benefits United States [Member]
United States Commingled Debt Equity Securities [Member]
Level 3 [Member]
|
Dec. 31, 2012
Other Postretirement Benefits United States [Member]
United States Commingled Debt Equity Securities [Member]
Level 3 [Member]
|
Dec. 31, 2013
Other Postretirement Benefits United States [Member]
Debt Securities [Member]
|
Dec. 31, 2012
Other Postretirement Benefits United States [Member]
Debt Securities [Member]
|
Dec. 31, 2013
Other Postretirement Benefits United States [Member]
Municipalities Debt Securities [Member]
|
Dec. 31, 2012
Other Postretirement Benefits United States [Member]
Municipalities Debt Securities [Member]
|
Dec. 31, 2013
Other Postretirement Benefits United States [Member]
Municipalities Debt Securities [Member]
Level 1 [Member]
|
Dec. 31, 2012
Other Postretirement Benefits United States [Member]
Municipalities Debt Securities [Member]
Level 1 [Member]
|
Dec. 31, 2013
Other Postretirement Benefits United States [Member]
Municipalities Debt Securities [Member]
Level 2 [Member]
|
Dec. 31, 2012
Other Postretirement Benefits United States [Member]
Municipalities Debt Securities [Member]
Level 2 [Member]
|
Dec. 31, 2013
Other Postretirement Benefits United States [Member]
Municipalities Debt Securities [Member]
Level 3 [Member]
|
Dec. 31, 2012
Other Postretirement Benefits United States [Member]
Municipalities Debt Securities [Member]
Level 3 [Member]
|
Dec. 31, 2013
Other Postretirement Benefits United States [Member]
Receivables And Payables Net [Member]
|
Dec. 31, 2012
Other Postretirement Benefits United States [Member]
Receivables And Payables Net [Member]
|
Dec. 31, 2013
Other Postretirement Benefits United States [Member]
Account 401 H [Member]
|
Dec. 31, 2012
Other Postretirement Benefits United States [Member]
Account 401 H [Member]
|
Dec. 31, 2013
Other Postretirement Benefits United States [Member]
Total Trust Assets Not Including 401 H Assets [Member]
|
Dec. 31, 2012
Other Postretirement Benefits United States [Member]
Total Trust Assets Not Including 401 H Assets [Member]
|
Dec. 31, 2013
Other Postretirement Benefits United States [Member]
Total Trust Assets Not Including 401 H Assets [Member]
Level 1 [Member]
|
Dec. 31, 2012
Other Postretirement Benefits United States [Member]
Total Trust Assets Not Including 401 H Assets [Member]
Level 1 [Member]
|
Dec. 31, 2013
Other Postretirement Benefits United States [Member]
Total Trust Assets Not Including 401 H Assets [Member]
Level 2 [Member]
|
Dec. 31, 2012
Other Postretirement Benefits United States [Member]
Total Trust Assets Not Including 401 H Assets [Member]
Level 2 [Member]
|
Dec. 31, 2013
Other Postretirement Benefits United States [Member]
Total Trust Assets Not Including 401 H Assets [Member]
Level 3 [Member]
|
Dec. 31, 2012
Other Postretirement Benefits United States [Member]
Total Trust Assets Not Including 401 H Assets [Member]
Level 3 [Member]
|
Dec. 31, 2013
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
|
Dec. 31, 2011
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
|
Dec. 31, 2013
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Integer
|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
|
Dec. 31, 2013
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Level 1 [Member]
|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Level 1 [Member]
|
Dec. 31, 2013
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Level 2 [Member]
|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Level 2 [Member]
|
Dec. 31, 2013
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Level 3 [Member]
|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Level 3 [Member]
|
Dec. 31, 2013
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Cash And Cash Equivalents [Member]
|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Cash And Cash Equivalents [Member]
|
Dec. 31, 2013
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Cash And Cash Equivalents [Member]
Level 1 [Member]
|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Cash And Cash Equivalents [Member]
Level 1 [Member]
|
Dec. 31, 2013
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Cash And Cash Equivalents [Member]
Level 2 [Member]
|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Cash And Cash Equivalents [Member]
Level 2 [Member]
|
Dec. 31, 2013
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Cash And Cash Equivalents [Member]
Level 3 [Member]
|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Cash And Cash Equivalents [Member]
Level 3 [Member]
|
Dec. 31, 2013
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Large Cap Equity Securities [Member]
|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Large Cap Equity Securities [Member]
|
Dec. 31, 2013
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Large Cap Equity Securities [Member]
Level 1 [Member]
|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Large Cap Equity Securities [Member]
Level 1 [Member]
|
Dec. 31, 2013
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Large Cap Equity Securities [Member]
Level 2 [Member]
|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Large Cap Equity Securities [Member]
Level 2 [Member]
|
Dec. 31, 2013
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Large Cap Equity Securities [Member]
Level 3 [Member]
|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Large Cap Equity Securities [Member]
Level 3 [Member]
|
Dec. 31, 2013
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Small Cap Equity Securities [Member]
|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Small Cap Equity Securities [Member]
|
Dec. 31, 2013
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Small Cap Equity Securities [Member]
Level 1 [Member]
|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Small Cap Equity Securities [Member]
Level 1 [Member]
|
Dec. 31, 2013
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Small Cap Equity Securities [Member]
Level 2 [Member]
|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Small Cap Equity Securities [Member]
Level 2 [Member]
|
Dec. 31, 2013
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Small Cap Equity Securities [Member]
Level 3 [Member]
|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Small Cap Equity Securities [Member]
Level 3 [Member]
|
Dec. 31, 2013
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Commingled Debt Equity Securities [Member]
|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Commingled Debt Equity Securities [Member]
|
Dec. 31, 2013
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Commingled Debt Equity Securities [Member]
Level 1 [Member]
|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Commingled Debt Equity Securities [Member]
Level 1 [Member]
|
Dec. 31, 2013
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Commingled Debt Equity Securities [Member]
Level 2 [Member]
|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Commingled Debt Equity Securities [Member]
Level 2 [Member]
|
Dec. 31, 2013
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Commingled Debt Equity Securities [Member]
Level 3 [Member]
|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Commingled Debt Equity Securities [Member]
Level 3 [Member]
|
Dec. 31, 2013
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
International Equity Securities [Member]
|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
International Equity Securities [Member]
|
Dec. 31, 2013
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
International Equity Securities [Member]
Level 1 [Member]
|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
International Equity Securities [Member]
Level 1 [Member]
|
Dec. 31, 2013
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
International Equity Securities [Member]
Level 2 [Member]
|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
International Equity Securities [Member]
Level 2 [Member]
|
Dec. 31, 2013
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
International Equity Securities [Member]
Level 3 [Member]
|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
International Equity Securities [Member]
Level 3 [Member]
|
Dec. 31, 2013
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
US Treasury And US Government Sponsored Agency Debt Securities [Member]
|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
US Treasury And US Government Sponsored Agency Debt Securities [Member]
|
Dec. 31, 2013
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
US Treasury And US Government Sponsored Agency Debt Securities [Member]
Level 1 [Member]
|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
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Level 1 [Member]
|
Dec. 31, 2013
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
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Level 2 [Member]
|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
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Level 2 [Member]
|
Dec. 31, 2013
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
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Level 3 [Member]
|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
US Treasury And US Government Sponsored Agency Debt Securities [Member]
Level 3 [Member]
|
Dec. 31, 2013
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Residential - Commercial Backed Debt Securities [Member]
|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
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Residential - Commercial Backed Debt Securities [Member]
|
Dec. 31, 2013
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
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Level 1 [Member]
|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
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Level 1 [Member]
|
Dec. 31, 2013
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Residential - Commercial Backed Debt Securities [Member]
Level 2 [Member]
|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Residential - Commercial Backed Debt Securities [Member]
Level 2 [Member]
|
Dec. 31, 2013
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Residential - Commercial Backed Debt Securities [Member]
Level 3 [Member]
|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Residential - Commercial Backed Debt Securities [Member]
Level 3 [Member]
|
Dec. 31, 2013
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Corporate Debt Securities [Member]
|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Corporate Debt Securities [Member]
|
Dec. 31, 2013
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Corporate Debt Securities [Member]
Level 1 [Member]
|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
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Level 1 [Member]
|
Dec. 31, 2013
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Corporate Debt Securities [Member]
Level 2 [Member]
|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Corporate Debt Securities [Member]
Level 2 [Member]
|
Dec. 31, 2013
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Corporate Debt Securities [Member]
Level 3 [Member]
|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
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Level 3 [Member]
|
Dec. 31, 2013
PPL Energy Supply LLC [Member]
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|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
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Master Trust [Member]
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|
Dec. 31, 2013
PPL Energy Supply LLC [Member]
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Level 1 [Member]
|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
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Level 1 [Member]
|
Dec. 31, 2013
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Level 2 [Member]
|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
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Level 2 [Member]
|
Dec. 31, 2013
PPL Energy Supply LLC [Member]
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Level 3 [Member]
|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
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|
Dec. 31, 2013
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|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
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International Debt Securities [Member]
|
Dec. 31, 2013
PPL Energy Supply LLC [Member]
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Level 1 [Member]
|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
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Level 1 [Member]
|
Dec. 31, 2013
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Level 2 [Member]
|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
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Level 2 [Member]
|
Dec. 31, 2013
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|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
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|
Dec. 31, 2013
PPL Energy Supply LLC [Member]
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|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
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|
Dec. 31, 2013
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Level 1 [Member]
|
Dec. 31, 2012
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Level 1 [Member]
|
Dec. 31, 2013
PPL Energy Supply LLC [Member]
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|
Dec. 31, 2012
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|
Dec. 31, 2013
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|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
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|
Dec. 31, 2013
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|
Dec. 31, 2012
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|
Dec. 31, 2013
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|
Dec. 31, 2012
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Level 1 [Member]
|
Dec. 31, 2013
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|
Dec. 31, 2012
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Level 2 [Member]
|
Dec. 31, 2013
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|
Dec. 31, 2012
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|
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|
Dec. 31, 2012
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|
Dec. 31, 2013
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|
Dec. 31, 2012
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|
Dec. 31, 2013
PPL Energy Supply LLC [Member]
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|
Dec. 31, 2012
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|
Dec. 31, 2013
PPL Energy Supply LLC [Member]
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|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
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|
Dec. 31, 2013
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|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
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Hedge Fund Of Funds Alternative Investments [Member]
|
Dec. 31, 2013
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Level 1 [Member]
|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
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Level 1 [Member]
|
Dec. 31, 2013
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
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|
Dec. 31, 2012
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|
Dec. 31, 2013
PPL Energy Supply LLC [Member]
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|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
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|
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|
Dec. 31, 2012
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Master Trust [Member]
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|
Dec. 31, 2013
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|
Dec. 31, 2012
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|
Dec. 31, 2013
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|
Dec. 31, 2012
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|
Dec. 31, 2013
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|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
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|
Dec. 31, 2013
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|
Dec. 31, 2012
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Interest Rate Swaps Derivatives [Member]
|
Dec. 31, 2013
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Pension Benefits United States [Member]
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Level 1 [Member]
|
Dec. 31, 2012
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Level 1 [Member]
|
Dec. 31, 2013
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Pension Benefits United States [Member]
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|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
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Level 2 [Member]
|
Dec. 31, 2013
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Level 3 [Member]
|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
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Level 3 [Member]
|
Dec. 31, 2013
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|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
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|
Dec. 31, 2013
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Level 1 [Member]
|
Dec. 31, 2012
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Level 1 [Member]
|
Dec. 31, 2013
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|
Dec. 31, 2012
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Level 2 [Member]
|
Dec. 31, 2013
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Level 3 [Member]
|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
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Level 3 [Member]
|
Dec. 31, 2013
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|
Dec. 31, 2012
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|
Dec. 31, 2013
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|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
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|
Dec. 31, 2013
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|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
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Total Trust Assets Not Including 401 H Assets [Member]
|
Dec. 31, 2013
PPL Energy Supply LLC [Member]
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Growth Portfolio [Member]
|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Growth Portfolio [Member]
|
Dec. 31, 2013
PPL Energy Supply LLC [Member]
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Growth Portfolio [Member]
Equity Securities [Member]
|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Growth Portfolio [Member]
Equity Securities [Member]
|
Dec. 31, 2013
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
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Debt Securities [Member]
|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
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Debt Securities [Member]
|
Dec. 31, 2013
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
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|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
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Growth Portfolio [Member]
Alternative Investments [Member]
|
Dec. 31, 2013
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
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Immunizing Portfolio [Member]
|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
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Immunizing Portfolio [Member]
|
Dec. 31, 2013
PPL Energy Supply LLC [Member]
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Immunizing Portfolio [Member]
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|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
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Immunizing Portfolio [Member]
Debt Securities [Member]
|
Dec. 31, 2013
PPL Energy Supply LLC [Member]
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Immunizing Portfolio [Member]
Derivatives [Member]
|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
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Immunizing Portfolio [Member]
Derivatives [Member]
|
Dec. 31, 2013
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
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Liquidity Portfolio [Member]
|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Liquidity Portfolio [Member]
|
Dec. 31, 2013
PPL Energy Supply LLC [Member]
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|
Dec. 31, 2012
PPL Energy Supply LLC [Member]
Other Postretirement Benefits United States [Member]
|
Dec. 31, 2011
PPL Energy Supply LLC [Member]
Other Postretirement Benefits United States [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
|
Dec. 31, 2011
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
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Integer
|
Dec. 31, 2012
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Pension Benefits United States [Member]
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|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Level 1 [Member]
|
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LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
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Level 1 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Level 2 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
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Level 2 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Level 3 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Level 3 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
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Cash And Cash Equivalents [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
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Cash And Cash Equivalents [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
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Level 1 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
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Level 1 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
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Cash And Cash Equivalents [Member]
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|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
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Cash And Cash Equivalents [Member]
Level 2 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Cash And Cash Equivalents [Member]
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|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
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Master Trust [Member]
Cash And Cash Equivalents [Member]
Level 3 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Large Cap Equity Securities [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Large Cap Equity Securities [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Large Cap Equity Securities [Member]
Level 1 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Large Cap Equity Securities [Member]
Level 1 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Large Cap Equity Securities [Member]
Level 2 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Large Cap Equity Securities [Member]
Level 2 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Large Cap Equity Securities [Member]
Level 3 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Large Cap Equity Securities [Member]
Level 3 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Small Cap Equity Securities [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Small Cap Equity Securities [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Small Cap Equity Securities [Member]
Level 1 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Small Cap Equity Securities [Member]
Level 1 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Small Cap Equity Securities [Member]
Level 2 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Small Cap Equity Securities [Member]
Level 2 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Small Cap Equity Securities [Member]
Level 3 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Small Cap Equity Securities [Member]
Level 3 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Commingled Debt Equity Securities [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Commingled Debt Equity Securities [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Commingled Debt Equity Securities [Member]
Level 1 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Commingled Debt Equity Securities [Member]
Level 1 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Commingled Debt Equity Securities [Member]
Level 2 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Commingled Debt Equity Securities [Member]
Level 2 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Commingled Debt Equity Securities [Member]
Level 3 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Commingled Debt Equity Securities [Member]
Level 3 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
International Equity Securities [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
International Equity Securities [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
International Equity Securities [Member]
Level 1 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
International Equity Securities [Member]
Level 1 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
International Equity Securities [Member]
Level 2 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
International Equity Securities [Member]
Level 2 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
International Equity Securities [Member]
Level 3 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
International Equity Securities [Member]
Level 3 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
US Treasury And US Government Sponsored Agency Debt Securities [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
US Treasury And US Government Sponsored Agency Debt Securities [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
US Treasury And US Government Sponsored Agency Debt Securities [Member]
Level 1 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
US Treasury And US Government Sponsored Agency Debt Securities [Member]
Level 1 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
US Treasury And US Government Sponsored Agency Debt Securities [Member]
Level 2 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
US Treasury And US Government Sponsored Agency Debt Securities [Member]
Level 2 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
US Treasury And US Government Sponsored Agency Debt Securities [Member]
Level 3 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
US Treasury And US Government Sponsored Agency Debt Securities [Member]
Level 3 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Residential - Commercial Backed Debt Securities [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Residential - Commercial Backed Debt Securities [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Residential - Commercial Backed Debt Securities [Member]
Level 1 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Residential - Commercial Backed Debt Securities [Member]
Level 1 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Residential - Commercial Backed Debt Securities [Member]
Level 2 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Residential - Commercial Backed Debt Securities [Member]
Level 2 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Residential - Commercial Backed Debt Securities [Member]
Level 3 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Residential - Commercial Backed Debt Securities [Member]
Level 3 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Corporate Debt Securities [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Corporate Debt Securities [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Corporate Debt Securities [Member]
Level 1 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Corporate Debt Securities [Member]
Level 1 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Corporate Debt Securities [Member]
Level 2 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Corporate Debt Securities [Member]
Level 2 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Corporate Debt Securities [Member]
Level 3 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Corporate Debt Securities [Member]
Level 3 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Other Debt Securities [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Other Debt Securities [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Other Debt Securities [Member]
Level 1 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Other Debt Securities [Member]
Level 1 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Other Debt Securities [Member]
Level 2 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Other Debt Securities [Member]
Level 2 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Other Debt Securities [Member]
Level 3 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Other Debt Securities [Member]
Level 3 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
International Debt Securities [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
International Debt Securities [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
International Debt Securities [Member]
Level 1 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
International Debt Securities [Member]
Level 1 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
International Debt Securities [Member]
Level 2 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
International Debt Securities [Member]
Level 2 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
International Debt Securities [Member]
Level 3 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
International Debt Securities [Member]
Level 3 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Commodities Alternative Investments [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Commodities Alternative Investments [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Commodities Alternative Investments [Member]
Level 1 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Commodities Alternative Investments [Member]
Level 1 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Commodities Alternative Investments [Member]
Level 2 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Commodities Alternative Investments [Member]
Level 2 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Commodities Alternative Investments [Member]
Level 3 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Commodities Alternative Investments [Member]
Level 3 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Real Estate Alternative Investments [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Real Estate Alternative Investments [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Real Estate Alternative Investments [Member]
Level 1 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Real Estate Alternative Investments [Member]
Level 1 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Real Estate Alternative Investments [Member]
Level 2 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Real Estate Alternative Investments [Member]
Level 2 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Real Estate Alternative Investments [Member]
Level 3 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Real Estate Alternative Investments [Member]
Level 3 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Private Equity Alternative Investments [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Private Equity Alternative Investments [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Private Equity Alternative Investments [Member]
Level 1 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Private Equity Alternative Investments [Member]
Level 1 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Private Equity Alternative Investments [Member]
Level 2 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Private Equity Alternative Investments [Member]
Level 2 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Private Equity Alternative Investments [Member]
Level 3 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Private Equity Alternative Investments [Member]
Level 3 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Hedge Fund Of Funds Alternative Investments [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Hedge Fund Of Funds Alternative Investments [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Hedge Fund Of Funds Alternative Investments [Member]
Level 1 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Hedge Fund Of Funds Alternative Investments [Member]
Level 1 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Hedge Fund Of Funds Alternative Investments [Member]
Level 2 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Hedge Fund Of Funds Alternative Investments [Member]
Level 2 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Hedge Fund Of Funds Alternative Investments [Member]
Level 3 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Hedge Fund Of Funds Alternative Investments [Member]
Level 3 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
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|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Other Derivatives [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Other Derivatives [Member]
Level 1 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
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Level 1 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Other Derivatives [Member]
Level 2 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Other Derivatives [Member]
Level 2 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Other Derivatives [Member]
Level 3 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Other Derivatives [Member]
Level 3 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Interest Rate Swaps Derivatives [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Interest Rate Swaps Derivatives [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Interest Rate Swaps Derivatives [Member]
Level 1 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Interest Rate Swaps Derivatives [Member]
Level 1 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Interest Rate Swaps Derivatives [Member]
Level 2 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Interest Rate Swaps Derivatives [Member]
Level 2 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Interest Rate Swaps Derivatives [Member]
Level 3 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Interest Rate Swaps Derivatives [Member]
Level 3 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Insurance Contracts [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Insurance Contracts [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Insurance Contracts [Member]
Level 1 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Insurance Contracts [Member]
Level 1 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Insurance Contracts [Member]
Level 2 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Insurance Contracts [Member]
Level 2 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Insurance Contracts [Member]
Level 3 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Insurance Contracts [Member]
Level 3 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Receivables And Payables Net [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Receivables And Payables Net [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Account 401 H [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Account 401 H [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Total Trust Assets Not Including 401 H Assets [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Total Trust Assets Not Including 401 H Assets [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Growth Portfolio [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Growth Portfolio [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Growth Portfolio [Member]
Equity Securities [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Growth Portfolio [Member]
Equity Securities [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Growth Portfolio [Member]
Debt Securities [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Growth Portfolio [Member]
Debt Securities [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Growth Portfolio [Member]
Alternative Investments [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Growth Portfolio [Member]
Alternative Investments [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Immunizing Portfolio [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Immunizing Portfolio [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Immunizing Portfolio [Member]
Debt Securities [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Immunizing Portfolio [Member]
Debt Securities [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Immunizing Portfolio [Member]
Derivatives [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Immunizing Portfolio [Member]
Derivatives [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Liquidity Portfolio [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Liquidity Portfolio [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Other Postretirement Benefits United States [Member]
|
Dec. 31, 2011
LG And E And KU Energy LLC [Member]
Other Postretirement Benefits United States [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Other Postretirement Benefits United States [Member]
Money Market Funds [Member]
Integer
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Other Postretirement Benefits United States [Member]
Money Market Funds [Member]
Level 1 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Other Postretirement Benefits United States [Member]
Money Market Funds [Member]
Level 1 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Other Postretirement Benefits United States [Member]
Money Market Funds [Member]
Level 2 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Other Postretirement Benefits United States [Member]
Money Market Funds [Member]
Level 2 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Other Postretirement Benefits United States [Member]
Money Market Funds [Member]
Level 3 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Other Postretirement Benefits United States [Member]
Money Market Funds [Member]
Level 3 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Other Postretirement Benefits United States [Member]
United States Large Cap Equity Securities [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Other Postretirement Benefits United States [Member]
United States Large Cap Equity Securities [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Other Postretirement Benefits United States [Member]
United States Large Cap Equity Securities [Member]
Level 1 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Other Postretirement Benefits United States [Member]
United States Large Cap Equity Securities [Member]
Level 1 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Other Postretirement Benefits United States [Member]
United States Large Cap Equity Securities [Member]
Level 2 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Other Postretirement Benefits United States [Member]
United States Large Cap Equity Securities [Member]
Level 2 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Other Postretirement Benefits United States [Member]
United States Large Cap Equity Securities [Member]
Level 3 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Other Postretirement Benefits United States [Member]
United States Large Cap Equity Securities [Member]
Level 3 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Other Postretirement Benefits United States [Member]
United States Commingled Debt Equity Securities [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Other Postretirement Benefits United States [Member]
United States Commingled Debt Equity Securities [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Other Postretirement Benefits United States [Member]
United States Commingled Debt Equity Securities [Member]
Level 1 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Other Postretirement Benefits United States [Member]
United States Commingled Debt Equity Securities [Member]
Level 1 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Other Postretirement Benefits United States [Member]
United States Commingled Debt Equity Securities [Member]
Level 2 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Other Postretirement Benefits United States [Member]
United States Commingled Debt Equity Securities [Member]
Level 2 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Other Postretirement Benefits United States [Member]
United States Commingled Debt Equity Securities [Member]
Level 3 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Other Postretirement Benefits United States [Member]
United States Commingled Debt Equity Securities [Member]
Level 3 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Other Postretirement Benefits United States [Member]
Municipalities Debt Securities [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Other Postretirement Benefits United States [Member]
Municipalities Debt Securities [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Other Postretirement Benefits United States [Member]
Municipalities Debt Securities [Member]
Level 1 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Other Postretirement Benefits United States [Member]
Municipalities Debt Securities [Member]
Level 1 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Other Postretirement Benefits United States [Member]
Municipalities Debt Securities [Member]
Level 2 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Other Postretirement Benefits United States [Member]
Municipalities Debt Securities [Member]
Level 2 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Other Postretirement Benefits United States [Member]
Municipalities Debt Securities [Member]
Level 3 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Other Postretirement Benefits United States [Member]
Municipalities Debt Securities [Member]
Level 3 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Other Postretirement Benefits United States [Member]
Receivables And Payables Net [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Other Postretirement Benefits United States [Member]
Receivables And Payables Net [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Other Postretirement Benefits United States [Member]
Account 401 H [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Other Postretirement Benefits United States [Member]
Account 401 H [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Other Postretirement Benefits United States [Member]
Total Trust Assets Not Including 401 H Assets [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Other Postretirement Benefits United States [Member]
Total Trust Assets Not Including 401 H Assets [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Other Postretirement Benefits United States [Member]
Total Trust Assets Not Including 401 H Assets [Member]
Level 1 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Other Postretirement Benefits United States [Member]
Total Trust Assets Not Including 401 H Assets [Member]
Level 1 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Other Postretirement Benefits United States [Member]
Total Trust Assets Not Including 401 H Assets [Member]
Level 2 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Other Postretirement Benefits United States [Member]
Total Trust Assets Not Including 401 H Assets [Member]
Level 2 [Member]
|
Dec. 31, 2013
LG And E And KU Energy LLC [Member]
Other Postretirement Benefits United States [Member]
Total Trust Assets Not Including 401 H Assets [Member]
Level 3 [Member]
|
Dec. 31, 2012
LG And E And KU Energy LLC [Member]
Other Postretirement Benefits United States [Member]
Total Trust Assets Not Including 401 H Assets [Member]
Level 3 [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
|
Dec. 31, 2011
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Integer
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Level 1 [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Level 1 [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Level 2 [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Level 2 [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Level 3 [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Level 3 [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Cash And Cash Equivalents [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Cash And Cash Equivalents [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Cash And Cash Equivalents [Member]
Level 1 [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Cash And Cash Equivalents [Member]
Level 1 [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Cash And Cash Equivalents [Member]
Level 2 [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Cash And Cash Equivalents [Member]
Level 2 [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Cash And Cash Equivalents [Member]
Level 3 [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Cash And Cash Equivalents [Member]
Level 3 [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Large Cap Equity Securities [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Large Cap Equity Securities [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Large Cap Equity Securities [Member]
Level 1 [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Large Cap Equity Securities [Member]
Level 1 [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Large Cap Equity Securities [Member]
Level 2 [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Large Cap Equity Securities [Member]
Level 2 [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Large Cap Equity Securities [Member]
Level 3 [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Large Cap Equity Securities [Member]
Level 3 [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Small Cap Equity Securities [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Small Cap Equity Securities [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Small Cap Equity Securities [Member]
Level 1 [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Small Cap Equity Securities [Member]
Level 1 [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Small Cap Equity Securities [Member]
Level 2 [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Small Cap Equity Securities [Member]
Level 2 [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Small Cap Equity Securities [Member]
Level 3 [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Small Cap Equity Securities [Member]
Level 3 [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Commingled Debt Equity Securities [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Commingled Debt Equity Securities [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Commingled Debt Equity Securities [Member]
Level 1 [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Commingled Debt Equity Securities [Member]
Level 1 [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Commingled Debt Equity Securities [Member]
Level 2 [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Commingled Debt Equity Securities [Member]
Level 2 [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Commingled Debt Equity Securities [Member]
Level 3 [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
United States Commingled Debt Equity Securities [Member]
Level 3 [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
International Equity Securities [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
International Equity Securities [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
International Equity Securities [Member]
Level 1 [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
International Equity Securities [Member]
Level 1 [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
International Equity Securities [Member]
Level 2 [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
International Equity Securities [Member]
Level 2 [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
International Equity Securities [Member]
Level 3 [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
International Equity Securities [Member]
Level 3 [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
US Treasury And US Government Sponsored Agency Debt Securities [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
US Treasury And US Government Sponsored Agency Debt Securities [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
US Treasury And US Government Sponsored Agency Debt Securities [Member]
Level 1 [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
US Treasury And US Government Sponsored Agency Debt Securities [Member]
Level 1 [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
US Treasury And US Government Sponsored Agency Debt Securities [Member]
Level 2 [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
US Treasury And US Government Sponsored Agency Debt Securities [Member]
Level 2 [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
US Treasury And US Government Sponsored Agency Debt Securities [Member]
Level 3 [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
US Treasury And US Government Sponsored Agency Debt Securities [Member]
Level 3 [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Residential - Commercial Backed Debt Securities [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Residential - Commercial Backed Debt Securities [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Residential - Commercial Backed Debt Securities [Member]
Level 1 [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Residential - Commercial Backed Debt Securities [Member]
Level 1 [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Residential - Commercial Backed Debt Securities [Member]
Level 2 [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Residential - Commercial Backed Debt Securities [Member]
Level 2 [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Residential - Commercial Backed Debt Securities [Member]
Level 3 [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Residential - Commercial Backed Debt Securities [Member]
Level 3 [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Corporate Debt Securities [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Corporate Debt Securities [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Corporate Debt Securities [Member]
Level 1 [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Corporate Debt Securities [Member]
Level 1 [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Corporate Debt Securities [Member]
Level 2 [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Corporate Debt Securities [Member]
Level 2 [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Corporate Debt Securities [Member]
Level 3 [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Corporate Debt Securities [Member]
Level 3 [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Other Debt Securities [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Other Debt Securities [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Other Debt Securities [Member]
Level 1 [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Other Debt Securities [Member]
Level 1 [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Other Debt Securities [Member]
Level 2 [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Other Debt Securities [Member]
Level 2 [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Other Debt Securities [Member]
Level 3 [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Other Debt Securities [Member]
Level 3 [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
International Debt Securities [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
International Debt Securities [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
International Debt Securities [Member]
Level 1 [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
International Debt Securities [Member]
Level 1 [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
International Debt Securities [Member]
Level 2 [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
International Debt Securities [Member]
Level 2 [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
International Debt Securities [Member]
Level 3 [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
International Debt Securities [Member]
Level 3 [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Commodities Alternative Investments [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Commodities Alternative Investments [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Commodities Alternative Investments [Member]
Level 1 [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Commodities Alternative Investments [Member]
Level 1 [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Commodities Alternative Investments [Member]
Level 2 [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Commodities Alternative Investments [Member]
Level 2 [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Commodities Alternative Investments [Member]
Level 3 [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Commodities Alternative Investments [Member]
Level 3 [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Real Estate Alternative Investments [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Real Estate Alternative Investments [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Real Estate Alternative Investments [Member]
Level 1 [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Real Estate Alternative Investments [Member]
Level 1 [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Real Estate Alternative Investments [Member]
Level 2 [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Real Estate Alternative Investments [Member]
Level 2 [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Real Estate Alternative Investments [Member]
Level 3 [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Real Estate Alternative Investments [Member]
Level 3 [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Private Equity Alternative Investments [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Private Equity Alternative Investments [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Private Equity Alternative Investments [Member]
Level 1 [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Private Equity Alternative Investments [Member]
Level 1 [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Private Equity Alternative Investments [Member]
Level 2 [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Private Equity Alternative Investments [Member]
Level 2 [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Private Equity Alternative Investments [Member]
Level 3 [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Private Equity Alternative Investments [Member]
Level 3 [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Hedge Fund Of Funds Alternative Investments [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Hedge Fund Of Funds Alternative Investments [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Hedge Fund Of Funds Alternative Investments [Member]
Level 1 [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Hedge Fund Of Funds Alternative Investments [Member]
Level 1 [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Hedge Fund Of Funds Alternative Investments [Member]
Level 2 [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Hedge Fund Of Funds Alternative Investments [Member]
Level 2 [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Hedge Fund Of Funds Alternative Investments [Member]
Level 3 [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Hedge Fund Of Funds Alternative Investments [Member]
Level 3 [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Other Derivatives [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Other Derivatives [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Other Derivatives [Member]
Level 1 [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Other Derivatives [Member]
Level 1 [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Other Derivatives [Member]
Level 2 [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Other Derivatives [Member]
Level 2 [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Other Derivatives [Member]
Level 3 [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Other Derivatives [Member]
Level 3 [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Interest Rate Swaps Derivatives [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Interest Rate Swaps Derivatives [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Interest Rate Swaps Derivatives [Member]
Level 1 [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Interest Rate Swaps Derivatives [Member]
Level 1 [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Interest Rate Swaps Derivatives [Member]
Level 2 [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Interest Rate Swaps Derivatives [Member]
Level 2 [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Interest Rate Swaps Derivatives [Member]
Level 3 [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Interest Rate Swaps Derivatives [Member]
Level 3 [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Insurance Contracts [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Insurance Contracts [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Insurance Contracts [Member]
Level 1 [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Insurance Contracts [Member]
Level 1 [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Insurance Contracts [Member]
Level 2 [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Insurance Contracts [Member]
Level 2 [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Insurance Contracts [Member]
Level 3 [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Insurance Contracts [Member]
Level 3 [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Receivables And Payables Net [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Receivables And Payables Net [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Account 401 H [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Account 401 H [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Total Trust Assets Not Including 401 H Assets [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Total Trust Assets Not Including 401 H Assets [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Growth Portfolio [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Growth Portfolio [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Growth Portfolio [Member]
Equity Securities [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Growth Portfolio [Member]
Equity Securities [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Growth Portfolio [Member]
Debt Securities [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Growth Portfolio [Member]
Debt Securities [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Growth Portfolio [Member]
Alternative Investments [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Growth Portfolio [Member]
Alternative Investments [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Immunizing Portfolio [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Immunizing Portfolio [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Immunizing Portfolio [Member]
Debt Securities [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Immunizing Portfolio [Member]
Debt Securities [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Immunizing Portfolio [Member]
Derivatives [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Immunizing Portfolio [Member]
Derivatives [Member]
|
Dec. 31, 2013
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Liquidity Portfolio [Member]
|
Dec. 31, 2012
Louisville Gas And Electric Co [Member]
Pension Benefits United States [Member]
Master Trust [Member]
Liquidity Portfolio [Member]
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Information About Plan Assets (Numeric) [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Value of plan U.S. pension trust assets that relate to PPL subsidiary | $ 147 | $ 149 | $ 1,200 | $ 1,100 | $ 281 | $ 287 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Undivided interest percentage in each asset category that PPL subsidiary holds | 3.00% | 4.00% | 29.00% | 26.00% | 7.00% | 7.00% | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Assumptions Used in Calculations (Numeric) [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
The limited lives of four partnership of private equity investments (in years) | 10 | 10 | 10 | 10 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
The limited lives of fifth partnership of private equity investments (in years) | 15 | 15 | 15 | 15 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
The amount of potential liability that maybe required to be funded by the master trust during life of the partnership | 76 | 76 | 76 | 76 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Number of months from date of purchase that investment must mature | 13 | 13 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Minimum number of days notice required to redeem shares for investments in hedge funds | 65 | 65 | 65 | 65 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Maximum number of days notice required to redeem shares for investments in hedge funds | 95 | 95 | 95 | 95 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Actual Allocation by Plan Asset (Details) [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Percentage of trust assets | 100.00% | [1] | 100.00% | 59.00% | [1] | 58.00% | 30.00% | [1] | 31.00% | 17.00% | [1],[2] | 18.00% | [2] | 12.00% | [1] | 9.00% | 39.00% | [1] | 41.00% | 40.00% | [1],[2] | 40.00% | [2] | (1.00%) | [1] | 1.00% | 2.00% | [1] | 1.00% | 100.00% | 100.00% | 0.00% | 0.00% | 7.00% | 6.00% | 5.00% | 14.00% | 3.00% | 0.00% | 5.00% | 0.00% | 8.00% | 3.00% | 7.00% | 2.00% | 19.00% | 18.00% | 40.00% | [3] | 51.00% | [3] | 6.00% | 6.00% | 100.00% | 100.00% | 4.00% | [4] | 3.00% | [4] | 55.00% | 46.00% | 41.00% | [5] | 51.00% | [5] | 100.00% | [1] | 100.00% | 59.00% | [1] | 58.00% | 30.00% | [1] | 31.00% | 17.00% | [1],[2] | 18.00% | [2] | 12.00% | [1] | 9.00% | 39.00% | [1] | 41.00% | 40.00% | [1],[2] | 40.00% | [2] | (1.00%) | [1] | 1.00% | 2.00% | [1] | 1.00% | 100.00% | [1] | 100.00% | 59.00% | [1] | 58.00% | 30.00% | [1] | 31.00% | 17.00% | [1],[2] | 18.00% | [2] | 12.00% | [1] | 9.00% | 39.00% | [1] | 41.00% | 40.00% | [1],[2] | 40.00% | [2] | (1.00%) | [1] | 1.00% | 2.00% | [1] | 1.00% | 100.00% | [1] | 100.00% | 59.00% | [1] | 58.00% | 30.00% | [1] | 31.00% | 17.00% | [1],[2] | 18.00% | [2] | 12.00% | [1] | 9.00% | 39.00% | [1] | 41.00% | 40.00% | [1],[2] | 40.00% | [2] | (1.00%) | [1] | 1.00% | 2.00% | [1] | 1.00% | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Target Allocations (Details ) [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Target asset allocation | 100.00% | [1] | 55.00% | [1] | 43.00% | [1] | 2.00% | [1] | 100.00% | 7.00% | 4.00% | 3.00% | 5.00% | 8.00% | 3.00% | 19.00% | 45.00% | [3] | 6.00% | 100.00% | 5.00% | [4] | 45.00% | 50.00% | [5] | 100.00% | [1] | 55.00% | [1] | 43.00% | [1] | 2.00% | [1] | 100.00% | [1] | 55.00% | [1] | 43.00% | [1] | 2.00% | [1] | 100.00% | [1] | 55.00% | [1] | 43.00% | [1] | 2.00% | [1] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Target asset allocation - PPL Plans | 100.00% | [1] | 55.00% | [1] | 43.00% | [1] | 2.00% | [1] | 100.00% | [1] | 55.00% | [1] | 43.00% | [1] | 2.00% | [1] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Target asset allocation - LKE Plans | 100.00% | [1] | 55.00% | [1] | 43.00% | [1] | 2.00% | [1] | 100.00% | [1] | 55.00% | [1] | 43.00% | [1] | 2.00% | [1] | 100.00% | [1] | 55.00% | [1] | 43.00% | [1] | 2.00% | [1] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Defined benefit plan fair value of plan assets (Details) [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Fair value at end of period | 4,156 | 3,471 | 4,271 | 1,130 | 1,288 | 3,000 | 2,618 | 141 | 146 | 120 | 84 | 120 | 84 | 480 | 558 | 134 | 206 | 346 | 352 | 137 | 124 | 137 | 124 | 749 | 676 | 13 | 56 | 736 | 620 | 630 | 557 | 163 | 184 | 467 | 373 | 617 | 704 | 563 | 634 | 54 | 70 | 12 | 12 | 11 | 11 | 1 | 1 | 963 | 874 | 940 | 847 | 23 | 27 | 24 | 24 | 24 | 23 | 1 | 7 | 7 | 7 | 7 | 108 | 59 | 108 | 59 | 134 | 93 | 134 | 93 | 80 | 75 | 80 | 75 | 210 | 125 | 210 | 125 | 12 | 2 | 12 | 2 | (49) | 36 | (49) | 36 | 37 | 42 | 37 | 42 | (11) | [6] | (115) | (102) | 4,156 | 3,939 | 7,284 | 6,351 | 1,112 | 957 | 6,172 | 5,954 | 10 | 10 | 14 | 523 | 267 | 223 | 256 | 217 | 355 | 275 | 720 | 80 | 236 | 226 | 180 | 46 | 352 | 254 | 98 | 411 | 126 | 285 | 231 | 161 | 161 | 485 | 485 | 127 | 1,384 | 1,384 | 1,220 | 504 | 593 | 504 | 593 | 2,426 | 2,907 | 2,426 | 2,907 | 447 | 423 | 447 | 423 | 446 | 391 | 12 | 12 | 13 | 182 | 145 | 182 | 145 | 100 | 119 | 100 | 119 | 36 | 41 | 36 | 41 | 1 | [6] | 1 | [6] | 115 | [7] | 102 | [7] | 330 | 318 | 12 | 13 | 318 | 305 | 147 | 132 | 4,271 | 4,052 | 1,130 | 1,288 | 3,000 | 2,618 | 141 | 146 | 120 | 84 | 120 | 84 | 480 | 558 | 134 | 206 | 346 | 352 | 137 | 124 | 137 | 124 | 749 | 676 | 13 | 56 | 736 | 620 | 630 | 557 | 163 | 184 | 467 | 373 | 617 | 704 | 563 | 634 | 54 | 70 | 12 | 12 | 11 | 11 | 1 | 1 | 963 | 874 | 940 | 847 | 23 | 27 | 24 | 24 | 24 | 23 | 1 | 7 | 7 | 7 | 7 | 108 | 59 | 108 | 59 | 134 | 93 | 134 | 93 | 80 | 75 | 80 | 75 | 210 | 125 | 210 | 125 | 12 | 2 | 12 | 2 | (49) | 36 | (49) | 36 | 37 | 42 | 37 | 42 | (11) | [6] | (115) | (102) | 4,156 | 3,939 | 1,173 | 944 | 4,271 | 4,052 | 1,130 | 1,288 | 3,000 | 2,618 | 141 | 146 | 120 | 84 | 120 | 84 | 480 | 558 | 134 | 206 | 346 | 352 | 137 | 124 | 137 | 124 | 749 | 676 | 13 | 56 | 736 | 620 | 630 | 557 | 163 | 184 | 467 | 373 | 617 | 704 | 563 | 634 | 54 | 70 | 12 | 12 | 11 | 11 | 1 | 1 | 963 | 874 | 940 | 847 | 23 | 27 | 24 | 24 | 24 | 23 | 1 | 7 | 7 | 7 | 7 | 108 | 59 | 108 | 59 | 134 | 93 | 134 | 93 | 80 | 75 | 80 | 75 | 210 | 125 | 210 | 125 | 12 | 2 | 12 | 2 | (49) | 36 | (49) | 36 | 37 | 42 | 37 | 42 | (11) | [6] | (115) | (102) | 4,156 | 3,939 | 74 | 58 | 12 | 12 | 13 | 182 | 145 | 182 | 145 | 100 | 119 | 100 | 119 | 36 | 41 | 36 | 41 | 1 | [6] | 1 | [6] | 115 | [7] | 102 | [7] | 330 | 318 | 12 | 13 | 318 | 305 | 281 | 287 | 256 | 4,271 | 4,052 | 1,130 | 1,288 | 3,000 | 2,618 | 141 | 146 | 120 | 84 | 120 | 84 | 480 | 558 | 134 | 206 | 346 | 352 | 137 | 124 | 137 | 124 | 749 | 676 | 13 | 56 | 736 | 620 | 630 | 557 | 163 | 184 | 467 | 373 | 617 | 704 | 563 | 634 | 54 | 70 | 12 | 12 | 11 | 11 | 1 | 1 | 963 | 874 | 940 | 847 | 23 | 27 | 24 | 24 | 24 | 23 | 1 | 7 | 7 | 7 | 7 | 108 | 59 | 108 | 59 | 134 | 93 | 134 | 93 | 80 | 75 | 80 | 75 | 210 | 125 | 210 | 125 | 12 | 2 | 12 | 2 | (49) | 36 | (49) | 36 | 37 | 42 | 37 | 42 | (11) | [6] | (115) | (102) | 4,156 | 3,939 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Change in Fair Value of Level 3 Plan Assets [Roll Forward] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Balance at beginning of period | 3,939 | 3,471 | 4,052 | 1,130 | 1,288 | 3,000 | 2,618 | 146 | 98 | 120 | 84 | 120 | 84 | 480 | 558 | 134 | 206 | 346 | 352 | 137 | 124 | 137 | 124 | 749 | 676 | 13 | 56 | 736 | 620 | 630 | 557 | 163 | 184 | 467 | 373 | 617 | 704 | 563 | 634 | 54 | 70 | 12 | 12 | 11 | 11 | 1 | 963 | 874 | 940 | 847 | 27 | 7 | 24 | 24 | 24 | 23 | 1 | 7 | 7 | 7 | 7 | 108 | 59 | 108 | 59 | 134 | 93 | 134 | 93 | 80 | 75 | 75 | 45 | 210 | 125 | 210 | 125 | 12 | 2 | 12 | 2 | (49) | 36 | (49) | 36 | 37 | 42 | 42 | 46 | (11) | [6] | (115) | (102) | 4,156 | 3,939 | 6,911 | 6,351 | 1,112 | 957 | 6,172 | 5,954 | 14 | 10 | 14 | 440 | 267 | 223 | 256 | 217 | 956 | 275 | 720 | 80 | 236 | 180 | 46 | 254 | 98 | 231 | 126 | 285 | 231 | 161 | 161 | 127 | 485 | 127 | 1,220 | 1,384 | 1,220 | 504 | 593 | 504 | 593 | 2,426 | 2,907 | 2,426 | 2,907 | 447 | 423 | 447 | 423 | 421 | 391 | 13 | 12 | 13 | 182 | 145 | 182 | 145 | 100 | 119 | 100 | 119 | 36 | 41 | 36 | 41 | 1 | [6] | 1 | [6] | 115 | [7] | 102 | [7] | 330 | 318 | 12 | 13 | 318 | 305 | 149 | 132 | 4,052 | 1,130 | 1,288 | 3,000 | 2,618 | 146 | 98 | 120 | 84 | 120 | 84 | 480 | 558 | 134 | 206 | 346 | 352 | 137 | 124 | 137 | 124 | 749 | 676 | 13 | 56 | 736 | 620 | 630 | 557 | 163 | 184 | 467 | 373 | 617 | 704 | 563 | 634 | 54 | 70 | 12 | 12 | 11 | 11 | 1 | 963 | 874 | 940 | 847 | 27 | 7 | 24 | 24 | 24 | 23 | 1 | 7 | 7 | 7 | 7 | 108 | 59 | 108 | 59 | 134 | 93 | 134 | 93 | 80 | 75 | 75 | 45 | 210 | 125 | 210 | 125 | 12 | 2 | 12 | 2 | (49) | 36 | (49) | 36 | 37 | 42 | 42 | 46 | (11) | [6] | (115) | (102) | 4,156 | 3,939 | 1,070 | 944 | 4,052 | 1,130 | 1,288 | 3,000 | 2,618 | 146 | 98 | 120 | 84 | 120 | 84 | 480 | 558 | 134 | 206 | 346 | 352 | 137 | 124 | 137 | 124 | 749 | 676 | 13 | 56 | 736 | 620 | 630 | 557 | 163 | 184 | 467 | 373 | 617 | 704 | 563 | 634 | 54 | 70 | 12 | 12 | 11 | 11 | 1 | 963 | 874 | 940 | 847 | 27 | 7 | 24 | 24 | 24 | 23 | 1 | 7 | 7 | 7 | 7 | 108 | 59 | 108 | 59 | 134 | 93 | 134 | 93 | 80 | 75 | 75 | 45 | 210 | 125 | 210 | 125 | 12 | 2 | 12 | 2 | (49) | 36 | (49) | 36 | 37 | 42 | 42 | 46 | (11) | [6] | (115) | (102) | 4,156 | 3,939 | 68 | 58 | 13 | 12 | 13 | 182 | 145 | 182 | 145 | 100 | 119 | 100 | 119 | 36 | 41 | 36 | 41 | 1 | [6] | 1 | [6] | 115 | [7] | 102 | [7] | 330 | 318 | 12 | 13 | 318 | 305 | 281 | 287 | 256 | 4,052 | 1,130 | 1,288 | 3,000 | 2,618 | 146 | 98 | 120 | 84 | 120 | 84 | 480 | 558 | 134 | 206 | 346 | 352 | 137 | 124 | 137 | 124 | 749 | 676 | 13 | 56 | 736 | 620 | 630 | 557 | 163 | 184 | 467 | 373 | 617 | 704 | 563 | 634 | 54 | 70 | 12 | 12 | 11 | 11 | 1 | 963 | 874 | 940 | 847 | 27 | 7 | 24 | 24 | 24 | 23 | 1 | 7 | 7 | 7 | 7 | 108 | 59 | 108 | 59 | 134 | 93 | 134 | 93 | 80 | 75 | 75 | 45 | 210 | 125 | 210 | 125 | 12 | 2 | 12 | 2 | (49) | 36 | (49) | 36 | 37 | 42 | 42 | 46 | (11) | [6] | (115) | (102) | 4,156 | 3,939 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Actual return on plan assets relating to assets still held at the reporting date | 5 | 14 | 1 | 3 | 10 | 2 | 3 | 5 | 14 | 1 | 3 | 10 | 2 | 3 | 5 | 14 | 1 | 3 | 10 | 2 | 3 | 5 | 14 | 1 | 3 | 10 | 2 | 3 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Actual return on plan assets relating to assets sold during the period | 5 | 2 | 5 | 2 | 5 | 2 | 5 | 2 | 5 | 2 | 5 | 2 | 5 | 2 | 5 | 2 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Purchases, sales and settlements | (14) | 35 | 1 | (9) | 21 | 2 | 20 | (7) | (7) | (14) | 35 | 1 | (9) | 21 | 2 | 20 | (7) | (7) | (14) | 35 | 1 | (9) | 21 | 2 | 20 | (7) | (7) | (14) | 35 | 1 | (9) | 21 | 2 | 20 | (7) | (7) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Transfers from level 2 to level 3 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Transfers from level 3 to level 2 | (1) | (4) | (4) | (1) | (1) | (4) | (4) | (1) | (1) | (4) | (4) | (1) | (1) | (4) | (4) | (1) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Balance at end of period | 4,156 | 3,471 | 4,271 | 1,130 | 1,288 | 3,000 | 2,618 | 141 | 146 | 120 | 84 | 120 | 84 | 480 | 558 | 134 | 206 | 346 | 352 | 137 | 124 | 137 | 124 | 749 | 676 | 13 | 56 | 736 | 620 | 630 | 557 | 163 | 184 | 467 | 373 | 617 | 704 | 563 | 634 | 54 | 70 | 12 | 12 | 11 | 11 | 1 | 1 | 963 | 874 | 940 | 847 | 23 | 27 | 24 | 24 | 24 | 23 | 1 | 7 | 7 | 7 | 7 | 108 | 59 | 108 | 59 | 134 | 93 | 134 | 93 | 80 | 75 | 80 | 75 | 210 | 125 | 210 | 125 | 12 | 2 | 12 | 2 | (49) | 36 | (49) | 36 | 37 | 42 | 37 | 42 | (11) | [6] | (115) | (102) | 4,156 | 3,939 | 7,284 | 6,351 | 1,112 | 957 | 6,172 | 5,954 | 10 | 10 | 14 | 523 | 267 | 223 | 256 | 217 | 355 | 275 | 720 | 80 | 236 | 226 | 180 | 46 | 352 | 254 | 98 | 411 | 126 | 285 | 231 | 161 | 161 | 485 | 485 | 127 | 1,384 | 1,384 | 1,220 | 504 | 593 | 504 | 593 | 2,426 | 2,907 | 2,426 | 2,907 | 447 | 423 | 447 | 423 | 446 | 391 | 12 | 12 | 13 | 182 | 145 | 182 | 145 | 100 | 119 | 100 | 119 | 36 | 41 | 36 | 41 | 1 | [6] | 1 | [6] | 115 | [7] | 102 | [7] | 330 | 318 | 12 | 13 | 318 | 305 | 147 | 132 | 4,271 | 4,052 | 1,130 | 1,288 | 3,000 | 2,618 | 141 | 146 | 120 | 84 | 120 | 84 | 480 | 558 | 134 | 206 | 346 | 352 | 137 | 124 | 137 | 124 | 749 | 676 | 13 | 56 | 736 | 620 | 630 | 557 | 163 | 184 | 467 | 373 | 617 | 704 | 563 | 634 | 54 | 70 | 12 | 12 | 11 | 11 | 1 | 1 | 963 | 874 | 940 | 847 | 23 | 27 | 24 | 24 | 24 | 23 | 1 | 7 | 7 | 7 | 7 | 108 | 59 | 108 | 59 | 134 | 93 | 134 | 93 | 80 | 75 | 80 | 75 | 210 | 125 | 210 | 125 | 12 | 2 | 12 | 2 | (49) | 36 | (49) | 36 | 37 | 42 | 37 | 42 | (11) | [6] | (115) | (102) | 4,156 | 3,939 | 1,173 | 944 | 4,271 | 4,052 | 1,130 | 1,288 | 3,000 | 2,618 | 141 | 146 | 120 | 84 | 120 | 84 | 480 | 558 | 134 | 206 | 346 | 352 | 137 | 124 | 137 | 124 | 749 | 676 | 13 | 56 | 736 | 620 | 630 | 557 | 163 | 184 | 467 | 373 | 617 | 704 | 563 | 634 | 54 | 70 | 12 | 12 | 11 | 11 | 1 | 1 | 963 | 874 | 940 | 847 | 23 | 27 | 24 | 24 | 24 | 23 | 1 | 7 | 7 | 7 | 7 | 108 | 59 | 108 | 59 | 134 | 93 | 134 | 93 | 80 | 75 | 80 | 75 | 210 | 125 | 210 | 125 | 12 | 2 | 12 | 2 | (49) | 36 | (49) | 36 | 37 | 42 | 37 | 42 | (11) | [6] | (115) | (102) | 4,156 | 3,939 | 74 | 58 | 12 | 12 | 13 | 182 | 145 | 182 | 145 | 100 | 119 | 100 | 119 | 36 | 41 | 36 | 41 | 1 | [6] | 1 | [6] | 115 | [7] | 102 | [7] | 330 | 318 | 12 | 13 | 318 | 305 | 281 | 287 | 256 | 4,271 | 4,052 | 1,130 | 1,288 | 3,000 | 2,618 | 141 | 146 | 120 | 84 | 120 | 84 | 480 | 558 | 134 | 206 | 346 | 352 | 137 | 124 | 137 | 124 | 749 | 676 | 13 | 56 | 736 | 620 | 630 | 557 | 163 | 184 | 467 | 373 | 617 | 704 | 563 | 634 | 54 | 70 | 12 | 12 | 11 | 11 | 1 | 1 | 963 | 874 | 940 | 847 | 23 | 27 | 24 | 24 | 24 | 23 | 1 | 7 | 7 | 7 | 7 | 108 | 59 | 108 | 59 | 134 | 93 | 134 | 93 | 80 | 75 | 80 | 75 | 210 | 125 | 210 | 125 | 12 | 2 | 12 | 2 | (49) | 36 | (49) | 36 | 37 | 42 | 37 | 42 | (11) | [6] | (115) | (102) | 4,156 | 3,939 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Defined Benefit Plan Estimated Future Employer Contributions (Numeric) [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Amount to be contributed to plan in the next fiscal year | 96 | 313 | 21 | 6 | 35 | 13 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Expected amount of benefit payments in the next period for non-qualified plans | 8 | 3 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Recurrence of formal actuarial valuations (in years) | 3 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Percentage of deficit funding requirements permitted to recover in rates | 75.00% | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Estimated Future Benefit Payments (Details) [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2014 | 211 | 387 | 53 | 5 | 1 | 58 | 13 | 15 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2015 | 222 | 392 | 55 | 6 | 2 | 57 | 13 | 15 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2016 | 234 | 397 | 57 | 6 | 2 | 60 | 14 | 15 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2017 | 250 | 402 | 59 | 7 | 2 | 64 | 14 | 16 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2018 | 264 | 410 | 62 | 8 | 2 | 69 | 15 | 17 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
2019-2023 | 1,545 | 2,128 | 338 | 52 | 11 | 425 | 81 | 99 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Expected Federal Subsidy (Details) [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Federal subsidy 2014 | 1 | 1 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Federal subsidy 2015 | 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Federal subsidy 2016 | 1 | 1 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Federal subsidy 2017 | 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Federal subsidy 2018 | 1 | 1 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Federal subsidy 2019-2023 | $ 3 | $ 2 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|