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Derivative Instruments (Tables)

3 Months Ended

Mar. 31, 2022

Derivative Instruments [Line Items]

Notional Amounts Of Derivative Instruments

As of March 31, 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):

									FTRs												Natural Gas												Coal												Diesel Fuel
															MWhs						Years						Dths						Years						Tons						Years						Gallons						Years
Alliant Energy															3,304						2022						175,658						2022-2030						2,653						2022-2023						2,268						2022
IPL															784						2022						94,175						2022-2030						1,053						2022-2023						—						—
WPL															2,520						2022						81,483						2022-2030						1,600						2022-2023						2,268						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
			March 31, 2022						December 31, 2021						March 31, 2022						December 31, 2021						March 31, 2022						December 31, 2021
Current derivative assets			$151						$113						$68						$48						$83						$65
Non-current derivative assets			110						63						59						36						51						27
Current derivative liabilities			6						8						3						4						3						4
Non-current derivative liabilities			1						1						1						—						—						1

IPL [Member]

Derivative Instruments [Line Items]

Notional Amounts Of Derivative Instruments

As of March 31, 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):

									FTRs												Natural Gas												Coal												Diesel Fuel
															MWhs						Years						Dths						Years						Tons						Years						Gallons						Years
Alliant Energy															3,304						2022						175,658						2022-2030						2,653						2022-2023						2,268						2022
IPL															784						2022						94,175						2022-2030						1,053						2022-2023						—						—
WPL															2,520						2022						81,483						2022-2030						1,600						2022-2023						2,268						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
			March 31, 2022						December 31, 2021						March 31, 2022						December 31, 2021						March 31, 2022						December 31, 2021
Current derivative assets			$151						$113						$68						$48						$83						$65
Non-current derivative assets			110						63						59						36						51						27
Current derivative liabilities			6						8						3						4						3						4
Non-current derivative liabilities			1						1						1						—						—						1

WPL [Member]

Derivative Instruments [Line Items]

Notional Amounts Of Derivative Instruments

As of March 31, 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):

									FTRs												Natural Gas												Coal												Diesel Fuel
															MWhs						Years						Dths						Years						Tons						Years						Gallons						Years
Alliant Energy															3,304						2022						175,658						2022-2030						2,653						2022-2023						2,268						2022
IPL															784						2022						94,175						2022-2030						1,053						2022-2023						—						—
WPL															2,520						2022						81,483						2022-2030						1,600						2022-2023						2,268						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
			March 31, 2022						December 31, 2021						March 31, 2022						December 31, 2021						March 31, 2022						December 31, 2021
Current derivative assets			$151						$113						$68						$48						$83						$65
Non-current derivative assets			110						63						59						36						51						27
Current derivative liabilities			6						8						3						4						3						4
Non-current derivative liabilities			1						1						1						—						—						1

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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.

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Tabular disclosure of the location and fair value amounts of derivative instruments (and nonderivative instruments that are designated and qualify as hedging instruments) reported in the statement of financial position.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5624163-113959

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- Definition

Tabular disclosure of the notional amounts of outstanding derivative positions.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5579245-113959

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