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Financing Activities (Tables)
 12 Months Ended
Dec. 31, 2021
Debt Disclosure [Line Items]  
Credit Facilities in Place at Period End The following credit facilities were in place at:
 December 31, 2021December 31, 2020
 Expiration
Date		CapacityBorrowedLetters of
Credit
and
Commercial
Paper
Issued		Unused CapacityBorrowedLetters of
Credit
and
Commercial
Paper
Issued
PPL       
PPL Capital Funding       
Syndicated Credit Facility (a) (b)Dec 2026$1,250 $— $— $1,250 $— $402 
Bilateral Credit Facility (a) (b)Mar 202250 — — 50 — — 
Bilateral Credit Facility (a) (b)Mar 202250 — 15 35 — 15 
Term Loan Credit Facility (a) (b)Mar 2021— — — — 200 — 
Term Loan Credit Facility (a) (b)Mar 2021— — — — 100 — 
Term Loan Credit Facility (a) (b)Mar 2022— — — — 100 — 
Total PPL Capital Funding Credit Facilities$1,350 $— $15 $1,335 $400 $417 
PPL Electric       
Syndicated Credit Facility (a) (b)Dec 2026$650 $— $1 $649 $— $1 
LG&E       
Syndicated Credit Facility (a) (b)Dec 2026$500 $— $69 $431 $— $262 
KU       
Syndicated Credit Facility (a) (b)Dec 2026$400 $— $— $400 $— $203 

(a)Each company pays customary fees under its respective facility and borrowings generally bear interest at LIBOR-based rates plus an applicable margin.
(b)The facilities contain a financial covenant requiring debt to total capitalization not to exceed 70% for PPL Capital Funding, PPL Electric, LG&E and KU, as calculated in accordance with the facilities and other customary covenants. Additionally, subject to certain conditions, PPL Capital Funding may request that the capacity of one of its bilateral credit facilities expiring in March 2022 be increased by up to $30 million and PPL Capital Funding, PPL Electric, LG&E and KU may each request up to a $250 million increase in its syndicated credit facility's capacity. Participation in any such increase is at the sole discretion of each lender.
Commercial paper The following commercial paper programs were in place at:
 December 31, 2021December 31, 2020
Weighted -
Average
Interest Rate		CapacityCommercial
Paper
Issuances		Unused
Capacity		Weighted -
Average
Interest Rate		Commercial
Paper
Issuances
PPL Capital Funding$1,500 $— $1,500 0.25%$402 
PPL Electric650 — 650 — 
LG&E (a)0.31%425 69 356 0.28%262 
KU350 — 350 0.28%203 
Total $2,925 $69 $2,856 $867 

(a)In March 2021, the capacity for the LG&E commercial paper program was increased from $350 million to $425 million.
Long-term Debt
Long-term Debt (All Registrants)

  December 31,
 Weighted-Average
Rate (d)		Maturities (d)20212020
PPL    
Senior Unsecured Notes3.81 %2026 - 2047$1,566 $4,850 
Senior Secured Notes/First Mortgage Bonds (a) (b) (c)3.59 %2022 - 20509,205 8,955 
Junior Subordinated Notes2.89 %2067480 930 
Term Loan Credit Facility— 100 
Total Long-term Debt before adjustments  11,251 14,835 
Unamortized premium and (discount), net(34)(40)
Unamortized debt issuance costs(77)(106)
Total Long-term Debt11,140 14,689 
Less current portion of Long-term Debt474 1,074 
Total Long-term Debt, noncurrent$10,666 $13,615 
  December 31,
 Weighted-Average
Rate (d)		Maturities (d)20212020
PPL Electric    
Senior Secured Notes/First Mortgage Bonds (a) (b)3.37 %2022 - 2049$4,539 $4,289 
Total Long-term Debt Before Adjustments  4,539 4,289 
Unamortized discount  (22)(23)
Unamortized debt issuance costs  (33)(30)
Total Long-term Debt  4,484 4,236 
Less current portion of Long-term Debt  474 400 
Total Long-term Debt, noncurrent  $4,010 $3,836 
LG&E    
First Mortgage Bonds (a) (c)3.59 %2025 - 2049$2,024 $2,024 
Total Long-term Debt Before Adjustments  2,024 2,024 
Unamortized discount  (4)(4)
Unamortized debt issuance costs  (14)(13)
Total Long-term Debt  2,006 2,007 
Less current portion of Long-term Debt  — 292 
Total Long-term Debt, noncurrent  $2,006 $1,715 
KU    
First Mortgage Bonds (a) (c)3.97 %2023 - 2050$2,642 $2,642 
Total Long-term Debt Before Adjustments  2,642 2,642 
Unamortized premium5 5 
Unamortized discount  (9)(9)
Unamortized debt issuance costs  (20)(20)
Total Long-term Debt  2,618 2,618 
Less current portion of Long-term Debt  — 132 
Total Long-term Debt, noncurrent  $2,618 $2,486 

(a)Includes PPL Electric's senior secured and first mortgage bonds that are secured by the lien of PPL Electric's 2001 Mortgage Indenture, which covers substantially all of PPL Electric’s tangible distribution properties and certain of its tangible transmission properties located in Pennsylvania, subject to certain exceptions and exclusions. The carrying value of PPL Electric's property, plant and equipment was approximately $11.3 billion and $10.8 billion at December 31, 2021 and 2020.

Includes LG&E's first mortgage bonds that are secured by the lien of the LG&E 2010 Mortgage Indenture which creates a lien, subject to certain exceptions and exclusions, on substantially all of LG&E's real and tangible personal property located in Kentucky and used or to be used in connection with the generation, transmission and distribution of electricity and the storage and distribution of natural gas. The aggregate carrying value of the property subject to the lien was $5.7 billion and $5.5 billion at December 31, 2021 and 2020.

Includes KU's first mortgage bonds that are secured by the lien of the KU 2010 Mortgage Indenture which creates a lien, subject to certain exceptions and exclusions, on substantially all of KU's real and tangible personal property located in Kentucky and used or to be used in connection with the generation, transmission and distribution of electricity. The aggregate carrying value of the property subject to the lien was $6.9 billion and $6.7 billion at December 31, 2021 and 2020.
(b)Includes PPL Electric's series of senior secured bonds that secure its obligations to make payments with respect to each series of Pollution Control Bonds that were issued by the LCIDA and the PEDFA on behalf of PPL Electric. These senior secured bonds were issued in the same principal amount, contain payment and redemption provisions that correspond to and bear the same interest rate as such Pollution Control Bonds. These senior secured bonds were issued under PPL Electric's 2001 Mortgage Indenture and are secured as noted in (a) above. This amount includes $224 million of which PPL Electric is allowed to convert the interest rate mode on the bonds from time to time to a commercial paper rate, daily rate, weekly rate, or term rate of at least one year and $90 million which is subject to mandatory redemption upon determination that the interest rate on the bonds would be included in the holders' gross income for federal tax purposes.

Includes $250 million of notes that may be called on or after September 28, 2021 and $650 million of notes that may be called on or after June 24, 2022, at a redemption price equal to 100% of the principal amount of the bonds, plus accrued and unpaid interest to, but excluding, such redemption date.
(c)Includes LG&E's and KU's series of first mortgage bonds that were issued to the respective trustees of tax-exempt revenue bonds to secure its respective obligations to make payments with respect to each series of bonds. The first mortgage bonds were issued in the same principal amounts, contain payment and redemption provisions that correspond to and bear the same interest rate as such tax-exempt revenue bonds. These first mortgage bonds were issued under the LG&E 2010 Mortgage Indenture and the KU 2010 Mortgage Indenture and are secured as noted in (a) above. The related tax-exempt revenue
bonds were issued by various governmental entities, principally counties in Kentucky, on behalf of LG&E and KU. The related revenue bond documents allow LG&E and KU to convert the interest rate mode on the bonds from time to time to a commercial paper rate, daily rate, weekly rate, term rate of at least one year or, in some cases, an auction rate or a LIBOR index rate.

At December 31, 2021, the aggregate tax-exempt revenue bonds issued on behalf of LG&E and KU that were in a term rate mode totaled $782 million for PPL, comprised of $473 million and $309 million for LG&E and KU. At December 31, 2021, the aggregate tax-exempt revenue bonds issued on behalf of LG&E and KU that were in a variable rate mode totaled $66 million and $33 million for LG&E and KU. These variable rate tax-exempt revenue bonds are subject to tender for purchase by LG&E and KU at the option of the holder and to mandatory tender for purchase by LG&E and KU upon the occurrence of certain events.
(d)The table reflects principal maturities only, based on stated maturities or earlier put dates, and the weighted-average rates as of December 31, 2021.
Long-term Debt Maturities The aggregate maturities of long-term debt, based on stated maturities or earlier put dates, for the periods 2022 through 2026 and thereafter are as follows:
PPLPPL
Electric		LG&EKU
2022$474 $474 $— $— 
2023353 340 — 13 
2024650 650 — — 
2025550 — 300 250 
2026904 — 90 164 
Thereafter8,320 3,075 1,634 2,215 
Total$11,251 $4,539 $2,024 $2,642