XML 100 R80.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

Stock-Based Compensation (Details) | 12 Months Ended
--- | ---
Dec. 31, 2019 USD ($) Integer $ / shares shares | Dec. 31, 2018 USD ($) $ / shares shares | Dec. 31, 2017 USD ($) $ / shares
All Plans [Member] | Restricted Shares And Units [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward] |  |  |
Nonvested, beginning of period (in shares) | 1,098,203 |  |
Granted (in shares) | 479,428 |  |
Vested (in shares) | (429,258) |  |
Forfeited (in shares) | (10,688) |  |
Nonvested, end of period (in shares) | 1,137,685 | 1,098,203 |
Awards, Equity Instruments Other than Options, additional disclosures (Details) [Abstract] |  |  |
Weighted-average grant date fair value per share, nonvested, beginning of period (in dollars per share) | $ / shares | $ 33.45 |  |
Weighted-average grant date fair value per share, granted (in dollars per share) | $ / shares | 31.95 | $ 30.58 | $ 35.30
Weighted-average grant date fair value per share, vested (in dollars per share) | $ / shares | 33.64 |  |
Weighted-average grant date fair value per share, forfeited (in dollars per share) | $ / shares | 31.53 |  |
Weighted-average grant date fair value per share, nonvested - end of period (in dollars per share) | $ / shares | $ 32.76 | $ 33.45 |
Total fair value of units vested during the period | $ | $ 13,000,000 | $ 16,000,000 | $ 20,000,000
Fair value assumptions and methodology [Abstract] |  |  |
Award vesting period (in years) | 3 years | 3 years | 3 years
All Plans [Member] | Total Shareowner Return Performance Units [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward] |  |  |
Nonvested, beginning of period (in shares) | 840,124 |  |
Granted (in shares) | 250,734 |  |
Vested (in shares) | 0 |  |
Forfeited (in shares) | (351,466) |  |
Nonvested, end of period (in shares) | 739,392 | 840,124 |
Awards, Equity Instruments Other than Options, additional disclosures (Details) [Abstract] |  |  |
Weighted-average grant date fair value per share, nonvested, beginning of period (in dollars per share) | $ / shares | $ 37.89 |  |
Weighted-average grant date fair value per share, granted (in dollars per share) | $ / shares | 35.83 | $ 38.26 | $ 38.38
Weighted-average grant date fair value per share, forfeited (in dollars per share) | $ / shares | 37.24 |  |
Weighted-average grant date fair value per share, nonvested - end of period (in dollars per share) | $ / shares | $ 37.50 | $ 37.89 |
Total fair value of units vested during the period | $ |  | $ 3,000,000 | $ 8,000,000
Period over which performance units fair value is recognized (in years) | 3 years | 3 years | 3 years
Maximum payout percentage of target award | 200.00% | 200.00% | 200.00%
Fair value assumptions and methodology [Abstract] |  |  |
Expected option life (in years) | 3 years | 3 years | 3 years
Expected stock volatility | 17.57% | 17.60% | 17.40%
All Plans [Member] | Total Shareowner Return Performance Units [Member] | Retirement Eligible [Member] |  |  |
Awards, Equity Instruments Other than Options, additional disclosures (Details) [Abstract] |  |  |
Period over which performance units fair value is recognized (in years) | 1 year | 1 year | 1 year
All Plans [Member] | Total Shareowner Return Performance Units [Member] | Not Retirement Eligible [Member] |  |  |
Awards, Equity Instruments Other than Options, additional disclosures (Details) [Abstract] |  |  |
Period over which performance units fair value is recognized (in years) | 3 years | 3 years | 3 years
Minimum period after which employee stock options become exercisable (in years) | 1 year | 1 year | 1 year
All Plans [Member] | Return On Equity Performance Units [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward] |  |  |
Nonvested, beginning of period (in shares) | 328,958 |  |
Granted (in shares) | 241,807 |  |
Nonvested, end of period (in shares) | 570,765 | 328,958 |
Awards, Equity Instruments Other than Options, additional disclosures (Details) [Abstract] |  |  |
Weighted-average grant date fair value per share, nonvested, beginning of period (in dollars per share) | $ / shares | $ 32.86 |  |
Weighted-average grant date fair value per share, granted (in dollars per share) | $ / shares | 30.89 | $ 32.21 | $ 32.42
Weighted-average grant date fair value per share, nonvested - end of period (in dollars per share) | $ / shares | $ 32.02 | $ 32.86 |
Period over which performance units fair value is recognized (in years) | 3 years |  |
Maximum payout percentage of target award | 200.00% |  |
All Plans [Member] | Stock Options [Member] |  |  |
Stock option activity [Roll Forward] |  |  |
Outstanding at beginning of period (in shares) | 2,914,525 |  |
Exercised (in shares) | (1,578,554) |  |
Forfeited (in shares) | (5,028) |  |
Outstanding at end of period (in shares) | 1,330,943 | 2,914,525 |
Stock options - additional disclosures [Abstract] |  |  |
Period after which, employee stock options expire (in years) | 10 years |  |
Weighted-average exercise price per share at beginning of period (in dollars per share) | $ / shares | $ 26.26 |  |
Weighted average exercise price per share, exercised (in dollars per share) | $ / shares | 26.31 |  |
Weighted average exercise price per share, forfeited (in dollars per share) | $ / shares | 28.77 |  |
Weighted average exercise price per share at end of period (in dollars per share) | $ / shares | $ 26.20 | $ 26.26 |
Weighted average remaining contractual term (in years) | 2 years 6 months |  |
Aggregate total intrinsic value | $ | $ 13,000,000 |  |
Cash received from exercise of stock options | $ | 53,000,000 | $ 5,000,000 | $ 19,000,000
Total intrinsic value of stock options exercised | $ | 11,000,000 |  | 8,000,000
All Plans [Member] | All Awards [Member] |  |  |
Aggregate disclosures [Abstract] |  |  |
Compensation expense | $ | 35,000,000 | 25,000,000 | 32,000,000
Income tax benefit | $ | 10,000,000 | $ 10,000,000 | $ 13,000,000
Unrecognized compensation expense | $ | $ 14,000,000 |  |
Weighted-average period for recognition | Integer | 1.9 |  |
Stock Incentive Plan [Member] |  |  |
Stock-Based Compensation [Line Items] |  |  |
Maximum number of shares approved for awards under the plan (in shares) | 15,000,000 |  |
Annual grant limit options (in shares) | 2,000,000 |  |
Annual grant limit for individual participants - performance based awards (in shares) | 750,000 |  |
Annual grant limit for individual participants - performance based awards | $ | $ 15,000,000 |  |
Incentive Compensation Plan For Key Employees [Member] |  |  |
Stock-Based Compensation [Line Items] |  |  |
Maximum number of shares approved for awards under the plan (in shares) | 14,199,796 |  |
Annual grant limit total as % of PPL outstanding PPL common stock on first day of each calendar year | 2.00% |  |
Annual grant limit options (in shares) | 3,000,000 |  |
PPL Electric Utilities Corp [Member] | All Plans [Member] | Restricted Shares And Units [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward] |  |  |
Nonvested, beginning of period (in shares) | 187,337 |  |
Transfer between registrants | (3,305) |  |
Granted (in shares) | 112,138 |  |
Vested (in shares) | (59,661) |  |
Forfeited (in shares) | (6,649) |  |
Nonvested, end of period (in shares) | 229,860 | 187,337 |
Awards, Equity Instruments Other than Options, additional disclosures (Details) [Abstract] |  |  |
Weighted-average grant date fair value per share, nonvested, beginning of period (in dollars per share) | $ / shares | $ 33.09 |  |
Weighted-average grant date fair value per share, transfer between registrants (in dollars per share) | $ / shares | 33.06 |  |
Weighted-average grant date fair value per share, granted (in dollars per share) | $ / shares | 32.33 | $ 30.00 | $ 35.45
Weighted-average grant date fair value per share, vested (in dollars per share) | $ / shares | 33.77 |  |
Weighted-average grant date fair value per share, forfeited (in dollars per share) | $ / shares | 31.01 |  |
Weighted-average grant date fair value per share, nonvested - end of period (in dollars per share) | $ / shares | $ 32.61 | $ 33.09 |
Total fair value of units vested during the period | $ | $ 2,000,000 | $ 2,000,000 | $ 3,000,000
Fair value assumptions and methodology [Abstract] |  |  |
Award vesting period (in years) | 3 years | 3 years | 3 years
PPL Electric Utilities Corp [Member] | All Plans [Member] | Total Shareowner Return Performance Units [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward] |  |  |
Nonvested, beginning of period (in shares) | 67,863 |  |
Granted (in shares) | 24,158 |  |
Vested (in shares) | 0 |  |
Forfeited (in shares) | (25,222) |  |
Nonvested, end of period (in shares) | 66,799 | 67,863 |
Awards, Equity Instruments Other than Options, additional disclosures (Details) [Abstract] |  |  |
Weighted-average grant date fair value per share, nonvested, beginning of period (in dollars per share) | $ / shares | $ 37.86 |  |
Weighted-average grant date fair value per share, granted (in dollars per share) | $ / shares | 35.68 | $ 38.37 | $ 38.37
Weighted-average grant date fair value per share, forfeited (in dollars per share) | $ / shares | 36.92 |  |
Weighted-average grant date fair value per share, nonvested - end of period (in dollars per share) | $ / shares | $ 37.43 | $ 37.86 |
Period over which performance units fair value is recognized (in years) | 3 years | 3 years | 3 years
Maximum payout percentage of target award | 200.00% | 200.00% | 200.00%
PPL Electric Utilities Corp [Member] | All Plans [Member] | Total Shareowner Return Performance Units [Member] | Retirement Eligible [Member] |  |  |
Awards, Equity Instruments Other than Options, additional disclosures (Details) [Abstract] |  |  |
Period over which performance units fair value is recognized (in years) | 1 year | 1 year | 1 year
PPL Electric Utilities Corp [Member] | All Plans [Member] | Total Shareowner Return Performance Units [Member] | Not Retirement Eligible [Member] |  |  |
Awards, Equity Instruments Other than Options, additional disclosures (Details) [Abstract] |  |  |
Period over which performance units fair value is recognized (in years) | 3 years | 3 years | 3 years
Minimum period after which employee stock options become exercisable (in years) | 1 year | 1 year | 1 year
PPL Electric Utilities Corp [Member] | All Plans [Member] | Return On Equity Performance Units [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward] |  |  |
Nonvested, beginning of period (in shares) | 25,960 |  |
Granted (in shares) | 23,234 |  |
Nonvested, end of period (in shares) | 49,194 | 25,960 |
Awards, Equity Instruments Other than Options, additional disclosures (Details) [Abstract] |  |  |
Weighted-average grant date fair value per share, nonvested, beginning of period (in dollars per share) | $ / shares | $ 32.96 |  |
Weighted-average grant date fair value per share, granted (in dollars per share) | $ / shares | 30.76 | $ 32.32 | $ 34.41
Weighted-average grant date fair value per share, nonvested - end of period (in dollars per share) | $ / shares | $ 31.92 | $ 32.96 |
Period over which performance units fair value is recognized (in years) | 3 years |  |
Maximum payout percentage of target award | 200.00% |  |
PPL Electric Utilities Corp [Member] | All Plans [Member] | Performance Units [Member] |  |  |
Fair value assumptions and methodology [Abstract] |  |  |
Expected option life (in years) | 3 years | 3 years | 3 years
Expected stock volatility | 17.57% | 17.60% | 17.40%
PPL Electric Utilities Corp [Member] | All Plans [Member] | Stock Options [Member] |  |  |
Stock options - additional disclosures [Abstract] |  |  |
Period after which, employee stock options expire (in years) | 10 years |  |
PPL Electric Utilities Corp [Member] | All Plans [Member] | All Awards [Member] |  |  |
Aggregate disclosures [Abstract] |  |  |
Compensation expense | $ | $ 12,000,000 | $ 10,000,000 | $ 18,000,000
Income tax benefit | $ | 3,000,000 | $ 3,000,000 | $ 8,000,000
Unrecognized compensation expense | $ | $ 3,000,000 |  |
Weighted-average period for recognition | Integer | 2.2 |  |
PPL Electric Utilities Corp [Member] | Stock Incentive Plan [Member] |  |  |
Stock-Based Compensation [Line Items] |  |  |
Maximum number of shares approved for awards under the plan (in shares) | 15,000,000 |  |
Annual grant limit options (in shares) | 2,000,000 |  |
Annual grant limit for individual participants - performance based awards (in shares) | 750,000 |  |
Annual grant limit for individual participants - performance based awards | $ | $ 15,000,000 |  |
PPL Electric Utilities Corp [Member] | Incentive Compensation Plan For Key Employees [Member] |  |  |
Stock-Based Compensation [Line Items] |  |  |
Maximum number of shares approved for awards under the plan (in shares) | 14,199,796 |  |
Annual grant limit total as % of PPL outstanding PPL common stock on first day of each calendar year | 2.00% |  |
Annual grant limit options (in shares) | 3,000,000 |  |
LG And E And KU Energy LLC [Member] | All Plans [Member] | Restricted Shares And Units [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward] |  |  |
Nonvested, beginning of period (in shares) | 133,030 |  |
Granted (in shares) | 76,256 |  |
Vested (in shares) | (42,841) |  |
Nonvested, end of period (in shares) | 166,445 | 133,030 |
Awards, Equity Instruments Other than Options, additional disclosures (Details) [Abstract] |  |  |
Weighted-average grant date fair value per share, nonvested, beginning of period (in dollars per share) | $ / shares | $ 33.45 |  |
Weighted-average grant date fair value per share, granted (in dollars per share) | $ / shares | 30.65 | $ 30.98 | $ 35.25
Weighted-average grant date fair value per share, vested (in dollars per share) | $ / shares | 33.75 |  |
Weighted-average grant date fair value per share, nonvested - end of period (in dollars per share) | $ / shares | $ 32.09 | $ 33.45 |
Total fair value of units vested during the period | $ | $ 1,000,000 | $ 5,000,000 | $ 4,000,000
Fair value assumptions and methodology [Abstract] |  |  |
Award vesting period (in years) | 3 years | 3 years | 3 years
LG And E And KU Energy LLC [Member] | All Plans [Member] | Total Shareowner Return Performance Units [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward] |  |  |
Nonvested, beginning of period (in shares) | 148,996 |  |
Granted (in shares) | 39,453 |  |
Vested (in shares) | 0 |  |
Forfeited (in shares) | (57,916) |  |
Nonvested, end of period (in shares) | 130,533 | 148,996 |
Awards, Equity Instruments Other than Options, additional disclosures (Details) [Abstract] |  |  |
Weighted-average grant date fair value per share, nonvested, beginning of period (in dollars per share) | $ / shares | $ 37.81 |  |
Weighted-average grant date fair value per share, granted (in dollars per share) | $ / shares | 35.93 | $ 38.32 | $ 38.24
Weighted-average grant date fair value per share, forfeited (in dollars per share) | $ / shares | 37.02 |  |
Weighted-average grant date fair value per share, nonvested - end of period (in dollars per share) | $ / shares | $ 37.60 | $ 37.81 |
Period over which performance units fair value is recognized (in years) | 3 years | 3 years | 3 years
Maximum payout percentage of target award | 200.00% | 200.00% | 200.00%
LG And E And KU Energy LLC [Member] | All Plans [Member] | Total Shareowner Return Performance Units [Member] | Retirement Eligible [Member] |  |  |
Awards, Equity Instruments Other than Options, additional disclosures (Details) [Abstract] |  |  |
Period over which performance units fair value is recognized (in years) | 1 year | 1 year | 1 year
LG And E And KU Energy LLC [Member] | All Plans [Member] | Total Shareowner Return Performance Units [Member] | Not Retirement Eligible [Member] |  |  |
Awards, Equity Instruments Other than Options, additional disclosures (Details) [Abstract] |  |  |
Period over which performance units fair value is recognized (in years) | 3 years | 3 years | 3 years
Minimum period after which employee stock options become exercisable (in years) | 1 year | 1 year | 1 year
LG And E And KU Energy LLC [Member] | All Plans [Member] | Return On Equity Performance Units [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward] |  |  |
Nonvested, beginning of period (in shares) | 69,620 |  |
Granted (in shares) | 38,185 |  |
Nonvested, end of period (in shares) | 107,805 | 69,620 |
Awards, Equity Instruments Other than Options, additional disclosures (Details) [Abstract] |  |  |
Weighted-average grant date fair value per share, nonvested, beginning of period (in dollars per share) | $ / shares | $ 32.87 |  |
Weighted-average grant date fair value per share, granted (in dollars per share) | $ / shares | 30.99 | $ 32.28 | $ 34.29
Weighted-average grant date fair value per share, nonvested - end of period (in dollars per share) | $ / shares | $ 32.20 | $ 32.87 |
Period over which performance units fair value is recognized (in years) | 3 years |  |
Maximum payout percentage of target award | 200.00% |  |
LG And E And KU Energy LLC [Member] | All Plans [Member] | Performance Units [Member] |  |  |
Fair value assumptions and methodology [Abstract] |  |  |
Expected option life (in years) | 3 years | 3 years | 3 years
Expected stock volatility | 17.57% | 17.60% | 17.40%
LG And E And KU Energy LLC [Member] | All Plans [Member] | Stock Options [Member] |  |  |
Stock options - additional disclosures [Abstract] |  |  |
Period after which, employee stock options expire (in years) | 10 years |  |
LG And E And KU Energy LLC [Member] | All Plans [Member] | All Awards [Member] |  |  |
Aggregate disclosures [Abstract] |  |  |
Compensation expense | $ | $ 9,000,000 | $ 8,000,000 | $ 8,000,000
Income tax benefit | $ | 2,000,000 | $ 2,000,000 | $ 3,000,000
Unrecognized compensation expense | $ | $ 1,000,000 |  |
Weighted-average period for recognition | Integer | 1.5 |  |
LG And E And KU Energy LLC [Member] | Stock Incentive Plan [Member] |  |  |
Stock-Based Compensation [Line Items] |  |  |
Maximum number of shares approved for awards under the plan (in shares) | 15,000,000 |  |
Annual grant limit options (in shares) | 2,000,000 |  |
Annual grant limit for individual participants - performance based awards (in shares) | 750,000 |  |
Annual grant limit for individual participants - performance based awards | $ | $ 15,000,000 |  |
LG And E And KU Energy LLC [Member] | Incentive Compensation Plan For Key Employees [Member] |  |  |
Stock-Based Compensation [Line Items] |  |  |
Maximum number of shares approved for awards under the plan (in shares) | 14,199,796 |  |
Annual grant limit total as % of PPL outstanding PPL common stock on first day of each calendar year | 2.00% |  |
Annual grant limit options (in shares) | 3,000,000 |  |

X
- Definition The weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, using a decimal to express in number of years. + References No definition available. + Details
Name: | ppl_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition2
Namespace Prefix: | ppl_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | duration

X
- Definition The date when the equity-based award expires as specified in the award agreement, which may be presented in a variety of ways (for example, year, month and year, day, month and year, quarter of a year). + References No definition available. + Details
Name: | ppl_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardExpirationDating1
Namespace Prefix: | ppl_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The minimum vesting term over which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | ppl_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriodMinimum2
Namespace Prefix: | ppl_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The value of performance based awards that can be awarded under the plan to any single eligible employee in any calendar year. + References No definition available. + Details
Name: | ppl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAnnualGrantLimit
Namespace Prefix: | ppl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The maximum number of shares that can be awarded under the plan to any single eligible employee in any calendar year. + References No definition available. + Details
Name: | ppl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAnnualGrantLimitShares
Namespace Prefix: | ppl_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were transferred out. + References No definition available. + Details
Name: | ppl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsTransferredOutInPeriodWeightedAverageGrantDateFairValue
Namespace Prefix: | ppl_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that were transferred out during the reporting period. + References No definition available. + Details
Name: | ppl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsTransfersOutInPeriod
Namespace Prefix: | ppl_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The period of time an equity-based award is expected to be outstanding. An equity-based award's expected term is generally determined based on, among other factors, the instrument's contractual term and the effects of employees' expected exercise and post-vesting employment termination behavior. + References No definition available. + Details
Name: | ppl_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedTerm2
Namespace Prefix: | ppl_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition This element represents the maximum number of options that can be awarded under the plan to any single eligible employee in any calendar year. + References No definition available. + Details
Name: | ppl_ShareBasedCompensationArrangementByShareBasedPaymentAwardLimitMaximumNumberOfOptionsAwardedUnderEachPlanToAnySingleEligibleEmployee
Namespace Prefix: | ppl_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition The weighted average period between the balance sheet date and expiration for all awards outstanding under the plan, which may be expressed in a decimal value for number of years. + References No definition available. + Details
Name: | ppl_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm3
Namespace Prefix: | ppl_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The maximum payout percentage of the target award based on performance measured against a specific utilities index. + References No definition available. + Details
Name: | ppl_ShareBasedCompensationArrangementByShareBasedPaymentAwardPayoutPercentageOfTargetAward
Namespace Prefix: | ppl_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The period, in years, that the fair value of performance units granted is recognized over, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | ppl_ShareBasedPerformanceUnitFairValuePeriodRecognized
Namespace Prefix: | ppl_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5047-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=115993241&loc=d3e301413-122809 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
Name: | us-gaap_AllocatedShareBasedCompensationExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_EmployeeServiceShareBasedCompensationAggregateDisclosuresAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of cost not yet recognized for nonvested award under share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
Name: | us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of tax benefit for recognition of expense of award under share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
Name: | us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of cash inflow from exercise of option under share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=116856206&loc=SL79508275-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3255-108585 + Details
Name: | us-gaap_ProceedsFromStockOptionsExercised
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdditionalDisclosuresAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(3) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(3) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(2) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(2) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(2) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(ii) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of shares authorized for issuance under share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(2) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Weighted average price of options that were either forfeited or expired. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(3)-(4) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(3) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Number of options outstanding, including both vested and non-vested options. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Maximum number of shares that may be issued in accordance with the plan as a proportion of outstanding capital stock. + References No definition available. + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPercentageOfOutstandingStockMaximum
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Weighted average price at which option holders acquired shares when converting their stock options into shares. + References No definition available. + Details
Name: | us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of share options (or share units) exercised during the current period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(2) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644 + Details
Name: | us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_PlanNameAxis=ppl_AllIncentiveCompensationPlansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_RestrictedStockUnitsRSUMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=ppl_TotalShareownerReturnPerformanceUnitsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ppl_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentEligibilityAxis=ppl_RetirementEligibleMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ppl_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentEligibilityAxis=ppl_NotRetirementEligibleMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=ppl_ReturnOnEquityPerformanceUnitsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_EmployeeStockOptionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=ppl_RestrictedStockRestrictedStockUnitsPerformanceUnitsAndStockOptionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=ppl_StockIncentivePlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=ppl_IncentiveCompensationPlanForKeyEmployeesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=ppl_PplElectricUtilitiesCorpMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_PerformanceSharesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=ppl_LGAndEAndKUEnergyLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |