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Derivative Instruments (Tables) | 6 Months Ended
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Jun. 30, 2022
Derivative Instruments [Line Items] |
Notional Amounts Of Derivative Instruments | As of June 30, 2022, gross notional amounts and settlement/delivery years related to outstanding swap contracts, option contracts, physical forward contracts and FTRs that were accounted for as commodity derivative instruments were as follows (units in thousands):
| Electricity |  | FTRs |  | Natural Gas |  | Coal |  | Diesel Fuel
| MWhs |  | Years |  | MWhs |  | Years |  | Dths |  | Years |  | Tons |  | Years |  | Gallons |  | Years
Alliant Energy | 818 |  | 2022,2024 |  | 20,382 |  |  | 2022-2023 |  | 234,755 |  |  | 2022-2030 |  | 2,216 |  |  | 2022-2023 |  | 1,512 |  |  | 2022
IPL | 495 |  | 2022,2024 |  | 8,100 |  |  | 2022-2023 |  | 132,019 |  |  | 2022-2030 |  | 900 |  |  | 2022-2023 |  | — |  |  | —
WPL | 323 |  | 2022 |  | 12,282 |  |  | 2022-2023 |  | 102,736 |  |  | 2022-2030 |  | 1,316 |  |  | 2022-2023 |  | 1,512 |  |  | 2022
Fair Value Of Financial Instruments | Derivative instruments are recorded at fair value each reporting date on the balance sheets as assets or liabilities as follows (in millions):
| Alliant Energy |  | IPL |  | WPL
| June 30, 2022 |  | December 31, 2021 |  | June 30, 2022 |  | December 31, 2021 |  | June 30, 2022 |  | December 31, 2021
Current derivative assets | $217 |  | $113 |  | $131 |  | $48 |  | $86 |  | $65
Non-current derivative assets | 142 |  | 63 |  | 76 |  | 36 |  | 66 |  | 27
Current derivative liabilities | 84 |  | 8 |  | 58 |  | 4 |  | 26 |  | 4
Non-current derivative liabilities | 11 |  | 1 |  | 9 |  | — |  | 2 |  | 1
IPL [Member] |
Derivative Instruments [Line Items] |
Notional Amounts Of Derivative Instruments | As of June 30, 2022, gross notional amounts and settlement/delivery years related to outstanding swap contracts, option contracts, physical forward contracts and FTRs that were accounted for as commodity derivative instruments were as follows (units in thousands):
| Electricity |  | FTRs |  | Natural Gas |  | Coal |  | Diesel Fuel
| MWhs |  | Years |  | MWhs |  | Years |  | Dths |  | Years |  | Tons |  | Years |  | Gallons |  | Years
Alliant Energy | 818 |  | 2022,2024 |  | 20,382 |  |  | 2022-2023 |  | 234,755 |  |  | 2022-2030 |  | 2,216 |  |  | 2022-2023 |  | 1,512 |  |  | 2022
IPL | 495 |  | 2022,2024 |  | 8,100 |  |  | 2022-2023 |  | 132,019 |  |  | 2022-2030 |  | 900 |  |  | 2022-2023 |  | — |  |  | —
WPL | 323 |  | 2022 |  | 12,282 |  |  | 2022-2023 |  | 102,736 |  |  | 2022-2030 |  | 1,316 |  |  | 2022-2023 |  | 1,512 |  |  | 2022
Fair Value Of Financial Instruments | Derivative instruments are recorded at fair value each reporting date on the balance sheets as assets or liabilities as follows (in millions):
| Alliant Energy |  | IPL |  | WPL
| June 30, 2022 |  | December 31, 2021 |  | June 30, 2022 |  | December 31, 2021 |  | June 30, 2022 |  | December 31, 2021
Current derivative assets | $217 |  | $113 |  | $131 |  | $48 |  | $86 |  | $65
Non-current derivative assets | 142 |  | 63 |  | 76 |  | 36 |  | 66 |  | 27
Current derivative liabilities | 84 |  | 8 |  | 58 |  | 4 |  | 26 |  | 4
Non-current derivative liabilities | 11 |  | 1 |  | 9 |  | — |  | 2 |  | 1
WPL [Member] |
Derivative Instruments [Line Items] |
Notional Amounts Of Derivative Instruments | As of June 30, 2022, gross notional amounts and settlement/delivery years related to outstanding swap contracts, option contracts, physical forward contracts and FTRs that were accounted for as commodity derivative instruments were as follows (units in thousands):
| Electricity |  | FTRs |  | Natural Gas |  | Coal |  | Diesel Fuel
| MWhs |  | Years |  | MWhs |  | Years |  | Dths |  | Years |  | Tons |  | Years |  | Gallons |  | Years
Alliant Energy | 818 |  | 2022,2024 |  | 20,382 |  |  | 2022-2023 |  | 234,755 |  |  | 2022-2030 |  | 2,216 |  |  | 2022-2023 |  | 1,512 |  |  | 2022
IPL | 495 |  | 2022,2024 |  | 8,100 |  |  | 2022-2023 |  | 132,019 |  |  | 2022-2030 |  | 900 |  |  | 2022-2023 |  | — |  |  | —
WPL | 323 |  | 2022 |  | 12,282 |  |  | 2022-2023 |  | 102,736 |  |  | 2022-2030 |  | 1,316 |  |  | 2022-2023 |  | 1,512 |  |  | 2022
Fair Value Of Financial Instruments | Derivative instruments are recorded at fair value each reporting date on the balance sheets as assets or liabilities as follows (in millions):
| Alliant Energy |  | IPL |  | WPL
| June 30, 2022 |  | December 31, 2021 |  | June 30, 2022 |  | December 31, 2021 |  | June 30, 2022 |  | December 31, 2021
Current derivative assets | $217 |  | $113 |  | $131 |  | $48 |  | $86 |  | $65
Non-current derivative assets | 142 |  | 63 |  | 76 |  | 36 |  | 66 |  | 27
Current derivative liabilities | 84 |  | 8 |  | 58 |  | 4 |  | 26 |  | 4
Non-current derivative liabilities | 11 |  | 1 |  | 9 |  | — |  | 2 |  | 1

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