Utility Rate Regulation (Other) (Details) - Unaffiliated Third Party Entity [Member] - USD ($) $ in Billions |
12 Months Ended | ||
---|---|---|---|
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
|
PPL Electric [Member] | |||
Purchases Of Accounts Receivable [Line Items] | |||
Purchases of accounts receivable | $ 1.2 | $ 1.3 | $ 1.3 |
PPL Electric Utilities Corp [Member] | |||
Purchases Of Accounts Receivable [Line Items] | |||
Purchases of accounts receivable | $ 1.2 | $ 1.3 | $ 1.3 |