XML 320 R58.htm IDEA: XBRL DOCUMENT
v3.20.4

Accumulated Other Comprehensive Income (Loss) (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items] |
Accumulated Other Comprehensive Income (Loss) | The after-tax changes in AOCI by component for the years ended December 31 were as follows:
|  |  |  |  |  |  |  |  | Defined benefit plans (b) |  |
| Foreign currency translation adjustments (a) |  |  |  | Unrealized gains (losses) on qualifying derivatives |  |  |  | Prior service costs |  | Actuarial gain (loss) |  | Total
PPL |  |  |  |  |  |  |  |  |  |  |  |  |
December 31, 2017 | $ | (1,089) |  |  |  |  | $ | (13) |  |  |  |  | $ | (7) |  |  | $ | (2,313) |  |  | $ | (3,422) |
Amounts arising during the year | (444) |  |  |  |  | 36 |  |  |  |  | (11) |  |  | (187) |  |  | (606) |
Reclassifications from AOCI | — |  |  |  |  | (29) |  |  |  |  | 2 |  |  | 142 |  |  | 115 |
Net OCI during the year | (444) |  |  |  |  | 7 |  |  |  |  | (9) |  |  | (45) |  |  | (491) |
Adoption of reclassification of certain tax effects from AOCI guidance cumulative effect adjustment | $ | — |  |  |  |  | $ | (1) |  |  |  |  | $ | (3) |  |  | $ | (47) |  |  | (51) |
|  |  |  |  |  |  |  |  | Defined benefit plans (b) |  |
| Foreign currency translation adjustments (a) |  |  |  | Unrealized gains (losses) on qualifying derivatives |  |  |  | Prior service costs |  | Actuarial gain (loss) |  | Total
December 31, 2018 | $ | (1,533) |  |  |  |  | $ | (7) |  |  |  |  | $ | (19) |  |  | $ | (2,405) |  |  | $ | (3,964) |
Amounts arising during the year | 108 |  |  |  |  | (11) |  |  |  |  | (1) |  |  | (592) |  |  | (496) |
Reclassifications from AOCI | — |  |  |  |  | 13 |  |  |  |  | 2 |  |  | 87 |  |  | 102 |
Net OCI during the year | 108 |  |  |  |  | 2 |  |  |  |  | 1 |  |  | (505) |  |  | (394) |
December 31, 2019 | $ | (1,425) |  |  |  |  | $ | (5) |  |  |  |  | $ | (18) |  |  | $ | (2,910) |  |  | $ | (4,358) |
Amounts arising during the year | 267 |  |  |  |  | (19) |  |  |  |  | (1) |  |  | (341) |  |  | (94) |
Reclassifications from AOCI | — |  |  |  |  | 24 |  |  |  |  | 3 |  |  | 205 |  |  | 232 |
Net OCI during the year | 267 |  |  |  |  | 5 |  |  |  |  | 2 |  |  | (136) |  |  | 138 |
December 31, 2020 | $ | (1,158) |  |  |  |  | $ | — |  |  |  |  | $ | (16) |  |  | $ | (3,046) |  |  | $ | (4,220) |
LKE |  |  |  |  |  |  |  |  |  |  |  |  |
December 31, 2017 |  |  |  |  |  |  |  |  | $ | (9) |  |  | $ | (79) |  |  | $ | (88) |
Amounts arising during the year |  |  |  |  |  |  |  |  | — |  |  | 7 |  |  | 7 |
Reclassifications from AOCI |  |  |  |  |  |  |  |  | 2 |  |  | 8 |  |  | 10 |
Net OCI during the year |  |  |  |  |  |  |  |  | 2 |  |  | 15 |  |  | 17 |
Adoption of reclassification of certain tax effects from AOCI guidance cumulative effect adjustment (Note 1) |  |  |  |  |  |  |  |  | (2) |  |  | (16) |  |  | (18) |
December 31, 2018 |  |  |  |  |  |  |  |  | $ | (9) |  |  | $ | (80) |  |  | $ | (89) |
Amounts arising during the year |  |  |  |  |  |  |  |  | (1) |  |  | (6) |  |  | (7) |
Reclassifications from AOCI |  |  |  |  |  |  |  |  | 1 |  |  | 2 |  |  | 3 |
Net OCI during the year |  |  |  |  |  |  |  |  | — |  |  | (4) |  |  | (4) |
December 31, 2019 |  |  |  |  |  |  |  |  | $ | (9) |  |  | $ | (84) |  |  | $ | (93) |
Amounts arising during the year |  |  |  |  |  |  |  |  | (1) |  |  | (7) |  |  | (8) |
Reclassifications from AOCI |  |  |  |  |  |  |  |  | 2 |  |  | 13 |  |  | 15 |
Net OCI during the year |  |  |  |  |  |  |  |  | 1 |  |  | 6 |  |  | 7 |
December 31, 2020 |  |  |  |  |  |  |  |  | $ | (8) |  |  | $ | (78) |  |  | $ | (86) |
(a) Amounts relate to the operations of WPD. (b) For PPL, substantially all of the amounts relate to WPD's pension plans. At December 31, 2020, the combined accumulated other comprehensive loss related to these plans was $2.9 billion.
Reclassification out of Other Comprehensive Income (Loss) | The following table presents PPL's gains (losses) and related income taxes for reclassifications from AOCI for the years ended December 31, 2020, 2019 and 2018.
|  | PPL |  |
Details about AOCI |  | 2020 |  | 2019 |  | 2018 |  | Affected Line Item on the Statements of Income
Qualifying derivatives |  |  |  |  |  |  |  |
Interest rate swaps |  | $ | (10) |  |  | $ | (9) |  |  | $ | (8) |  |  | Interest Expense
Cross-currency swaps |  | (22) |  |  | (9) |  |  | 42 |  |  | Other Income (Expense) - net
|  | — |  |  | — |  |  | 1 |  |  | Interest Expense
Total Pre-tax |  | (32) |  |  | (18) |  |  | 35 |  |  |
Income Taxes |  | 8 |  |  | 5 |  |  | (6) |  |  |
Total After-tax |  | (24) |  |  | (13) |  |  | 29 |  |  |
Defined benefit plans |  |  |  |  |  |  |  |
Prior service costs |  | (4) |  |  | (3) |  |  | (2) |  |  |
Net actuarial loss |  | (256) |  |  | (109) |  |  | (178) |  |  |
Total Pre-tax |  | (260) |  |  | (112) |  |  | (180) |  |  |
Income Taxes |  | 52 |  |  | 23 |  |  | 36 |  |  |
Total After-tax |  | (208) |  |  | (89) |  |  | (144) |  |  |
Total reclassifications during the year |  | $ | (232) |  |  | $ | (102) |  |  | $ | (115) |  |  |
LG And E And KU Energy LLC [Member] |
Accumulated Other Comprehensive Income (Loss) [Line Items] |
Accumulated Other Comprehensive Income (Loss) | The after-tax changes in AOCI by component for the years ended December 31 were as follows:
|  |  |  |  |  |  |  |  | Defined benefit plans (b) |  |
| Foreign currency translation adjustments (a) |  |  |  | Unrealized gains (losses) on qualifying derivatives |  |  |  | Prior service costs |  | Actuarial gain (loss) |  | Total
PPL |  |  |  |  |  |  |  |  |  |  |  |  |
December 31, 2017 | $ | (1,089) |  |  |  |  | $ | (13) |  |  |  |  | $ | (7) |  |  | $ | (2,313) |  |  | $ | (3,422) |
Amounts arising during the year | (444) |  |  |  |  | 36 |  |  |  |  | (11) |  |  | (187) |  |  | (606) |
Reclassifications from AOCI | — |  |  |  |  | (29) |  |  |  |  | 2 |  |  | 142 |  |  | 115 |
Net OCI during the year | (444) |  |  |  |  | 7 |  |  |  |  | (9) |  |  | (45) |  |  | (491) |
Adoption of reclassification of certain tax effects from AOCI guidance cumulative effect adjustment | $ | — |  |  |  |  | $ | (1) |  |  |  |  | $ | (3) |  |  | $ | (47) |  |  | (51) |
|  |  |  |  |  |  |  |  | Defined benefit plans (b) |  |
| Foreign currency translation adjustments (a) |  |  |  | Unrealized gains (losses) on qualifying derivatives |  |  |  | Prior service costs |  | Actuarial gain (loss) |  | Total
December 31, 2018 | $ | (1,533) |  |  |  |  | $ | (7) |  |  |  |  | $ | (19) |  |  | $ | (2,405) |  |  | $ | (3,964) |
Amounts arising during the year | 108 |  |  |  |  | (11) |  |  |  |  | (1) |  |  | (592) |  |  | (496) |
Reclassifications from AOCI | — |  |  |  |  | 13 |  |  |  |  | 2 |  |  | 87 |  |  | 102 |
Net OCI during the year | 108 |  |  |  |  | 2 |  |  |  |  | 1 |  |  | (505) |  |  | (394) |
December 31, 2019 | $ | (1,425) |  |  |  |  | $ | (5) |  |  |  |  | $ | (18) |  |  | $ | (2,910) |  |  | $ | (4,358) |
Amounts arising during the year | 267 |  |  |  |  | (19) |  |  |  |  | (1) |  |  | (341) |  |  | (94) |
Reclassifications from AOCI | — |  |  |  |  | 24 |  |  |  |  | 3 |  |  | 205 |  |  | 232 |
Net OCI during the year | 267 |  |  |  |  | 5 |  |  |  |  | 2 |  |  | (136) |  |  | 138 |
December 31, 2020 | $ | (1,158) |  |  |  |  | $ | — |  |  |  |  | $ | (16) |  |  | $ | (3,046) |  |  | $ | (4,220) |
LKE |  |  |  |  |  |  |  |  |  |  |  |  |
December 31, 2017 |  |  |  |  |  |  |  |  | $ | (9) |  |  | $ | (79) |  |  | $ | (88) |
Amounts arising during the year |  |  |  |  |  |  |  |  | — |  |  | 7 |  |  | 7 |
Reclassifications from AOCI |  |  |  |  |  |  |  |  | 2 |  |  | 8 |  |  | 10 |
Net OCI during the year |  |  |  |  |  |  |  |  | 2 |  |  | 15 |  |  | 17 |
Adoption of reclassification of certain tax effects from AOCI guidance cumulative effect adjustment (Note 1) |  |  |  |  |  |  |  |  | (2) |  |  | (16) |  |  | (18) |
December 31, 2018 |  |  |  |  |  |  |  |  | $ | (9) |  |  | $ | (80) |  |  | $ | (89) |
Amounts arising during the year |  |  |  |  |  |  |  |  | (1) |  |  | (6) |  |  | (7) |
Reclassifications from AOCI |  |  |  |  |  |  |  |  | 1 |  |  | 2 |  |  | 3 |
Net OCI during the year |  |  |  |  |  |  |  |  | — |  |  | (4) |  |  | (4) |
December 31, 2019 |  |  |  |  |  |  |  |  | $ | (9) |  |  | $ | (84) |  |  | $ | (93) |
Amounts arising during the year |  |  |  |  |  |  |  |  | (1) |  |  | (7) |  |  | (8) |
Reclassifications from AOCI |  |  |  |  |  |  |  |  | 2 |  |  | 13 |  |  | 15 |
Net OCI during the year |  |  |  |  |  |  |  |  | 1 |  |  | 6 |  |  | 7 |
December 31, 2020 |  |  |  |  |  |  |  |  | $ | (8) |  |  | $ | (78) |  |  | $ | (86) |
(a) Amounts relate to the operations of WPD. (b) For PPL, substantially all of the amounts relate to WPD's pension plans. At December 31, 2020, the combined accumulated other comprehensive loss related to these plans was $2.9 billion.

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_AccumulatedOtherComprehensiveIncomeLossLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of information about items reclassified out of accumulated other comprehensive income (loss). + References No definition available. + Details
Name: | us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6450520&loc=d3e32583-110901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=121641772&loc=SL7669686-108580 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 45 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900 + Details
Name: | us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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