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Goodwill and Other Intangible Assets (Other Intangibles - Indefinite-Lived) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Not subject to amortization due to indefinite life: [Line Items] |  |  |
Gross carrying amount | $ 23 | $ 23 |
Gross carrying amount - other intangible assets | 574 | 570 |
Intangible assets with no regulatory offset [Member] |  |  |
Not subject to amortization due to indefinite life: [Line Items] |  |  |
Amortization expense | 9 | 7 | $ 6
Land Rights and Easements [Member] |  |  |
Not subject to amortization due to indefinite life: [Line Items] |  |  |
Gross carrying amount | 17 | 17 |
Other [Member] |  |  |
Not subject to amortization due to indefinite life: [Line Items] |  |  |
Gross carrying amount | 6 | 6 |
PPL Electric Utilities Corp [Member] |  |  |
Not subject to amortization due to indefinite life: [Line Items] |  |  |
Gross carrying amount - other intangible assets | 401 | 398 |
PPL Electric Utilities Corp [Member] | Intangible assets with no regulatory offset [Member] |  |  |
Not subject to amortization due to indefinite life: [Line Items] |  |  |
Amortization expense | 4 | 4 | 4
PPL Electric Utilities Corp [Member] | Land Rights and Easements [Member] |  |  |
Not subject to amortization due to indefinite life: [Line Items] |  |  |
Gross carrying amount | 17 | 17 |
Kentucky Utilities Co [Member] | Intangible assets with no regulatory offset [Member] |  |  |
Not subject to amortization due to indefinite life: [Line Items] |  |  |
Amortization expense | $ 1 | $ 0 | $ 0

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- Definition Sum of the carrying amounts as of the balance sheet date of all intangible assets (finite and indefinite lived), excluding goodwill. The amount excludes any accumulated amortization. + References No definition available. + Details
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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 + Details
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- 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
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- Definition Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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