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Other Income (Expense) - net (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Other Income |  |  |  |
Defined benefit plans - non-service credits | $ 6 | $ 1 | $ 18 | $ 4
Interest Income | 6 | 0 | 10 | 1
AFUDC - equity component | 4 | 7 | 13 | 15
Miscellaneous | 2 | 1 | 7 | 3
Total Other Income | 18 | 9 | 48 | 23
Other Expense |  |  |  |
Charitable Contributions | 0 | 0 | 2 | 2
Miscellaneous | 6 | 3 | 21 | 10
Total Other Expense | 6 | 3 | 23 | 12
Other Income (Expense) - net | 12 | 6 | 25 | 11
PPL Electric Utilities Corp [Member] |  |  |  |
Other Expense |  |  |  |
Other Income (Expense) - net | $ 6 | $ 7 | $ 16 | $ 15

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