XML 33 R32.htm IDEA: XBRL DOCUMENT v3.20.1
Fair Value Measurements (Tables)
3 Months Ended
Mar. 31, 2020
Statement [Line Items]  
Fair Value Measurements Carrying amounts and related estimated fair values of other financial instruments were as follows (in millions):
Alliant Energy
March 31, 2020
 
December 31, 2019
 
 
 
Fair Value
 
 
 
Fair Value
 
Carrying
 
Level
 
Level
 
Level
 
 
 
Carrying
 
Level
 
Level
 
Level
 
 
 
Amount
 
1
 
2
 
3
 
Total
 
Amount
 
1
 
2
 
3
 
Total
Assets:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Money market fund investments

$41.2

 

$41.2

 

$—

 

$—

 

$41.2

 

$5.4

 

$5.4

 

$—

 

$—

 

$5.4

Derivatives
18.7

 

 
4.0

 
14.7

 
18.7

 
26.8

 

 
4.8

 
22.0

 
26.8

Deferred proceeds
188.0

 

 

 
188.0

 
188.0

 
187.7

 

 

 
187.7

 
187.7

Liabilities:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Derivatives
51.1

 

 
50.6

 
0.5

 
51.1

 
37.6

 

 
36.8

 
0.8

 
37.6

Long-term debt (incl. current maturities)
6,191.1

 

 
6,916.4

 
1.7

 
6,918.1

 
6,190.2

 

 
6,917.9

 
2.0

 
6,919.9

IPL
March 31, 2020
 
December 31, 2019
 
 
 
Fair Value
 
 
 
Fair Value
 
Carrying
 
Level
 
Level
 
Level
 
 
 
Carrying
 
Level
 
Level
 
Level
 
 
 
Amount
 
1
 
2
 
3
 
Total
 
Amount
 
1
 
2
 
3
 
Total
Assets:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Money market fund investments

$21.2

 

$21.2

 

$—

 

$—

 

$21.2

 

$5.4

 

$5.4

 

$—

 

$—

 

$5.4

Derivatives
16.5

 

 
2.5

 
14.0

 
16.5

 
22.3

 

 
2.8

 
19.5

 
22.3

Deferred proceeds
188.0

 

 

 
188.0

 
188.0

 
187.7

 

 

 
187.7

 
187.7

Liabilities:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Derivatives
22.4

 

 
21.9

 
0.5

 
22.4

 
17.4

 

 
16.6

 
0.8

 
17.4

Long-term debt (incl. current maturities)
3,147.9

 

 
3,452.1

 

 
3,452.1

 
3,147.3

 

 
3,489.1

 

 
3,489.1

WPL
March 31, 2020
 
December 31, 2019
 
 
 
Fair Value
 
 
 
Fair Value
 
Carrying
 
Level
 
Level
 
Level
 
 
 
Carrying
 
Level
 
Level
 
Level
 
 
 
Amount
 
1
 
2
 
3
 
Total
 
Amount
 
1
 
2
 
3
 
Total
Assets:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Money market fund investments

$20.0

 

$20.0

 

$—

 

$—

 

$20.0

 

$—

 

$—

 

$—

 

$—

 

$—

Derivatives
2.2

 

 
1.5

 
0.7

 
2.2

 
4.5

 

 
2.0

 
2.5

 
4.5

Liabilities:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Derivatives
28.7

 

 
28.7

 

 
28.7

 
20.2

 

 
20.2

 

 
20.2

Long-term debt (incl. current maturities)
1,933.1

 

 
2,309.8

 

 
2,309.8

 
1,932.7

 

 
2,268.2

 

 
2,268.2



Fair Value Measurements Using Significant Unobservable Inputs
Information for fair value measurements using significant unobservable inputs (Level 3 inputs) was as follows (in millions):
Alliant Energy
Commodity Contract Derivative
 
 
 
Assets and (Liabilities), net
 
Deferred Proceeds
Three Months Ended March 31
2020
 
2019
 
2020
 
2019
Beginning balance, January 1

$21.2

 

$12.2

 

$187.7

 

$119.4

Total net losses included in changes in net assets (realized/unrealized)
(3.1
)
 
(5.6
)
 

 

Sales

 
(0.2
)
 

 

Settlements (a)
(3.9
)
 
(6.0
)
 
0.3

 
58.9

Ending balance, March 31

$14.2

 

$0.4

 

$188.0

 

$178.3

The amount of total net losses for the period included in changes in net assets attributable to the change in unrealized losses relating to assets and liabilities held at March 31

($3.1
)
 

($2.6
)
 

$—

 

$—

 
 
 
 
 
 
 
 
IPL
Commodity Contract Derivative
 
 
 
Assets and (Liabilities), net
 
Deferred Proceeds
Three Months Ended March 31
2020
 
2019
 
2020
 
2019
Beginning balance, January 1

$18.7

 

$9.0

 

$187.7

 

$119.4

Total net losses included in changes in net assets (realized/unrealized)
(2.3
)
 
(3.2
)
 

 

Sales

 
(0.1
)
 

 

Settlements (a)
(2.9
)
 
(5.1
)
 
0.3

 
58.9

Ending balance, March 31

$13.5

 

$0.6

 

$188.0

 

$178.3

The amount of total net losses for the period included in changes in net assets attributable to the change in unrealized losses relating to assets and liabilities held at March 31

($2.3
)
 

($1.4
)
 

$—

 

$—

 
 
 
 
 
 
 
 
WPL
Commodity Contract Derivative
 
Assets and (Liabilities), net
Three Months Ended March 31
2020
 
2019
Beginning balance, January 1

$2.5

 

$3.2

Total net losses included in changes in net assets (realized/unrealized)
(0.8
)
 
(2.4
)
Sales

 
(0.1
)
Settlements
(1.0
)
 
(0.9
)
Ending balance, March 31

$0.7

 

($0.2
)
The amount of total net losses for the period included in changes in net assets attributable to the change in unrealized losses relating to assets and liabilities held at March 31

($0.8
)
 

($1.2
)
 
 
 
 
(a)
Settlements related to deferred proceeds are due to the change in the carrying amount of receivables sold less the allowance for doubtful accounts associated with the receivables sold and cash amounts received from the receivables sold.

Fair Value Of Net Derivative Assets The fair value of FTR and natural gas commodity contracts categorized as Level 3 was recognized as net derivative assets as follows (in millions):
 
Alliant Energy
 
IPL
 
WPL
 
Excluding FTRs
 
FTRs
 
Excluding FTRs
 
FTRs
 
Excluding FTRs
 
FTRs
March 31, 2020

$11.8

 

$2.4

 

$11.7

 

$1.8

 

$0.1

 

$0.6

December 31, 2019
14.6

 
6.6

 
13.6

 
5.1

 
1.0

 
1.5


IPL [Member]  
Statement [Line Items]  
Fair Value Measurements Carrying amounts and related estimated fair values of other financial instruments were as follows (in millions):
Alliant Energy
March 31, 2020
 
December 31, 2019
 
 
 
Fair Value
 
 
 
Fair Value
 
Carrying
 
Level
 
Level
 
Level
 
 
 
Carrying
 
Level
 
Level
 
Level
 
 
 
Amount
 
1
 
2
 
3
 
Total
 
Amount
 
1
 
2
 
3
 
Total
Assets:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Money market fund investments

$41.2

 

$41.2

 

$—

 

$—

 

$41.2

 

$5.4

 

$5.4

 

$—

 

$—

 

$5.4

Derivatives
18.7

 

 
4.0

 
14.7

 
18.7

 
26.8

 

 
4.8

 
22.0

 
26.8

Deferred proceeds
188.0

 

 

 
188.0

 
188.0

 
187.7

 

 

 
187.7

 
187.7

Liabilities:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Derivatives
51.1

 

 
50.6

 
0.5

 
51.1

 
37.6

 

 
36.8

 
0.8

 
37.6

Long-term debt (incl. current maturities)
6,191.1

 

 
6,916.4

 
1.7

 
6,918.1

 
6,190.2

 

 
6,917.9

 
2.0

 
6,919.9

IPL
March 31, 2020
 
December 31, 2019
 
 
 
Fair Value
 
 
 
Fair Value
 
Carrying
 
Level
 
Level
 
Level
 
 
 
Carrying
 
Level
 
Level
 
Level
 
 
 
Amount
 
1
 
2
 
3
 
Total
 
Amount
 
1
 
2
 
3
 
Total
Assets:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Money market fund investments

$21.2

 

$21.2

 

$—

 

$—

 

$21.2

 

$5.4

 

$5.4

 

$—

 

$—

 

$5.4

Derivatives
16.5

 

 
2.5

 
14.0

 
16.5

 
22.3

 

 
2.8

 
19.5

 
22.3

Deferred proceeds
188.0

 

 

 
188.0

 
188.0

 
187.7

 

 

 
187.7

 
187.7

Liabilities:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Derivatives
22.4

 

 
21.9

 
0.5

 
22.4

 
17.4

 

 
16.6

 
0.8

 
17.4

Long-term debt (incl. current maturities)
3,147.9

 

 
3,452.1

 

 
3,452.1

 
3,147.3

 

 
3,489.1

 

 
3,489.1

WPL
March 31, 2020
 
December 31, 2019
 
 
 
Fair Value
 
 
 
Fair Value
 
Carrying
 
Level
 
Level
 
Level
 
 
 
Carrying
 
Level
 
Level
 
Level
 
 
 
Amount
 
1
 
2
 
3
 
Total
 
Amount
 
1
 
2
 
3
 
Total
Assets:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Money market fund investments

$20.0

 

$20.0

 

$—

 

$—

 

$20.0

 

$—

 

$—

 

$—

 

$—

 

$—

Derivatives
2.2

 

 
1.5

 
0.7

 
2.2

 
4.5

 

 
2.0

 
2.5

 
4.5

Liabilities:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Derivatives
28.7

 

 
28.7

 

 
28.7

 
20.2

 

 
20.2

 

 
20.2

Long-term debt (incl. current maturities)
1,933.1

 

 
2,309.8

 

 
2,309.8

 
1,932.7

 

 
2,268.2

 

 
2,268.2



Fair Value Measurements Using Significant Unobservable Inputs
Information for fair value measurements using significant unobservable inputs (Level 3 inputs) was as follows (in millions):
Alliant Energy
Commodity Contract Derivative
 
 
 
Assets and (Liabilities), net
 
Deferred Proceeds
Three Months Ended March 31
2020
 
2019
 
2020
 
2019
Beginning balance, January 1

$21.2

 

$12.2

 

$187.7

 

$119.4

Total net losses included in changes in net assets (realized/unrealized)
(3.1
)
 
(5.6
)
 

 

Sales

 
(0.2
)
 

 

Settlements (a)
(3.9
)
 
(6.0
)
 
0.3

 
58.9

Ending balance, March 31

$14.2

 

$0.4

 

$188.0

 

$178.3

The amount of total net losses for the period included in changes in net assets attributable to the change in unrealized losses relating to assets and liabilities held at March 31

($3.1
)
 

($2.6
)
 

$—

 

$—

 
 
 
 
 
 
 
 
IPL
Commodity Contract Derivative
 
 
 
Assets and (Liabilities), net
 
Deferred Proceeds
Three Months Ended March 31
2020
 
2019
 
2020
 
2019
Beginning balance, January 1

$18.7

 

$9.0

 

$187.7

 

$119.4

Total net losses included in changes in net assets (realized/unrealized)
(2.3
)
 
(3.2
)
 

 

Sales

 
(0.1
)
 

 

Settlements (a)
(2.9
)
 
(5.1
)
 
0.3

 
58.9

Ending balance, March 31

$13.5

 

$0.6

 

$188.0

 

$178.3

The amount of total net losses for the period included in changes in net assets attributable to the change in unrealized losses relating to assets and liabilities held at March 31

($2.3
)
 

($1.4
)
 

$—

 

$—

 
 
 
 
 
 
 
 
WPL
Commodity Contract Derivative
 
Assets and (Liabilities), net
Three Months Ended March 31
2020
 
2019
Beginning balance, January 1

$2.5

 

$3.2

Total net losses included in changes in net assets (realized/unrealized)
(0.8
)
 
(2.4
)
Sales

 
(0.1
)
Settlements
(1.0
)
 
(0.9
)
Ending balance, March 31

$0.7

 

($0.2
)
The amount of total net losses for the period included in changes in net assets attributable to the change in unrealized losses relating to assets and liabilities held at March 31

($0.8
)
 

($1.2
)
 
 
 
 
(a)
Settlements related to deferred proceeds are due to the change in the carrying amount of receivables sold less the allowance for doubtful accounts associated with the receivables sold and cash amounts received from the receivables sold.

Fair Value Of Net Derivative Assets The fair value of FTR and natural gas commodity contracts categorized as Level 3 was recognized as net derivative assets as follows (in millions):
 
Alliant Energy
 
IPL
 
WPL
 
Excluding FTRs
 
FTRs
 
Excluding FTRs
 
FTRs
 
Excluding FTRs
 
FTRs
March 31, 2020

$11.8

 

$2.4

 

$11.7

 

$1.8

 

$0.1

 

$0.6

December 31, 2019
14.6

 
6.6

 
13.6

 
5.1

 
1.0

 
1.5


WPL [Member]  
Statement [Line Items]  
Fair Value Measurements Carrying amounts and related estimated fair values of other financial instruments were as follows (in millions):
Alliant Energy
March 31, 2020
 
December 31, 2019
 
 
 
Fair Value
 
 
 
Fair Value
 
Carrying
 
Level
 
Level
 
Level
 
 
 
Carrying
 
Level
 
Level
 
Level
 
 
 
Amount
 
1
 
2
 
3
 
Total
 
Amount
 
1
 
2
 
3
 
Total
Assets:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Money market fund investments

$41.2

 

$41.2

 

$—

 

$—

 

$41.2

 

$5.4

 

$5.4

 

$—

 

$—

 

$5.4

Derivatives
18.7

 

 
4.0

 
14.7

 
18.7

 
26.8

 

 
4.8

 
22.0

 
26.8

Deferred proceeds
188.0

 

 

 
188.0

 
188.0

 
187.7

 

 

 
187.7

 
187.7

Liabilities:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Derivatives
51.1

 

 
50.6

 
0.5

 
51.1

 
37.6

 

 
36.8

 
0.8

 
37.6

Long-term debt (incl. current maturities)
6,191.1

 

 
6,916.4

 
1.7

 
6,918.1

 
6,190.2

 

 
6,917.9

 
2.0

 
6,919.9

IPL
March 31, 2020
 
December 31, 2019
 
 
 
Fair Value
 
 
 
Fair Value
 
Carrying
 
Level
 
Level
 
Level
 
 
 
Carrying
 
Level
 
Level
 
Level
 
 
 
Amount
 
1
 
2
 
3
 
Total
 
Amount
 
1
 
2
 
3
 
Total
Assets:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Money market fund investments

$21.2

 

$21.2

 

$—

 

$—

 

$21.2

 

$5.4

 

$5.4

 

$—

 

$—

 

$5.4

Derivatives
16.5

 

 
2.5

 
14.0

 
16.5

 
22.3

 

 
2.8

 
19.5

 
22.3

Deferred proceeds
188.0

 

 

 
188.0

 
188.0

 
187.7

 

 

 
187.7

 
187.7

Liabilities:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Derivatives
22.4

 

 
21.9

 
0.5

 
22.4

 
17.4

 

 
16.6

 
0.8

 
17.4

Long-term debt (incl. current maturities)
3,147.9

 

 
3,452.1

 

 
3,452.1

 
3,147.3

 

 
3,489.1

 

 
3,489.1

WPL
March 31, 2020
 
December 31, 2019
 
 
 
Fair Value
 
 
 
Fair Value
 
Carrying
 
Level
 
Level
 
Level
 
 
 
Carrying
 
Level
 
Level
 
Level
 
 
 
Amount
 
1
 
2
 
3
 
Total
 
Amount
 
1
 
2
 
3
 
Total
Assets:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Money market fund investments

$20.0

 

$20.0

 

$—

 

$—

 

$20.0

 

$—

 

$—

 

$—

 

$—

 

$—

Derivatives
2.2

 

 
1.5

 
0.7

 
2.2

 
4.5

 

 
2.0

 
2.5

 
4.5

Liabilities:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Derivatives
28.7

 

 
28.7

 

 
28.7

 
20.2

 

 
20.2

 

 
20.2

Long-term debt (incl. current maturities)
1,933.1

 

 
2,309.8

 

 
2,309.8

 
1,932.7

 

 
2,268.2

 

 
2,268.2



Fair Value Measurements Using Significant Unobservable Inputs
Information for fair value measurements using significant unobservable inputs (Level 3 inputs) was as follows (in millions):
Alliant Energy
Commodity Contract Derivative
 
 
 
Assets and (Liabilities), net
 
Deferred Proceeds
Three Months Ended March 31
2020
 
2019
 
2020
 
2019
Beginning balance, January 1

$21.2

 

$12.2

 

$187.7

 

$119.4

Total net losses included in changes in net assets (realized/unrealized)
(3.1
)
 
(5.6
)
 

 

Sales

 
(0.2
)
 

 

Settlements (a)
(3.9
)
 
(6.0
)
 
0.3

 
58.9

Ending balance, March 31

$14.2

 

$0.4

 

$188.0

 

$178.3

The amount of total net losses for the period included in changes in net assets attributable to the change in unrealized losses relating to assets and liabilities held at March 31

($3.1
)
 

($2.6
)
 

$—

 

$—

 
 
 
 
 
 
 
 
IPL
Commodity Contract Derivative
 
 
 
Assets and (Liabilities), net
 
Deferred Proceeds
Three Months Ended March 31
2020
 
2019
 
2020
 
2019
Beginning balance, January 1

$18.7

 

$9.0

 

$187.7

 

$119.4

Total net losses included in changes in net assets (realized/unrealized)
(2.3
)
 
(3.2
)
 

 

Sales

 
(0.1
)
 

 

Settlements (a)
(2.9
)
 
(5.1
)
 
0.3

 
58.9

Ending balance, March 31

$13.5

 

$0.6

 

$188.0

 

$178.3

The amount of total net losses for the period included in changes in net assets attributable to the change in unrealized losses relating to assets and liabilities held at March 31

($2.3
)
 

($1.4
)
 

$—

 

$—

 
 
 
 
 
 
 
 
WPL
Commodity Contract Derivative
 
Assets and (Liabilities), net
Three Months Ended March 31
2020
 
2019
Beginning balance, January 1

$2.5

 

$3.2

Total net losses included in changes in net assets (realized/unrealized)
(0.8
)
 
(2.4
)
Sales

 
(0.1
)
Settlements
(1.0
)
 
(0.9
)
Ending balance, March 31

$0.7

 

($0.2
)
The amount of total net losses for the period included in changes in net assets attributable to the change in unrealized losses relating to assets and liabilities held at March 31

($0.8
)
 

($1.2
)
 
 
 
 
(a)
Settlements related to deferred proceeds are due to the change in the carrying amount of receivables sold less the allowance for doubtful accounts associated with the receivables sold and cash amounts received from the receivables sold.

Fair Value Of Net Derivative Assets The fair value of FTR and natural gas commodity contracts categorized as Level 3 was recognized as net derivative assets as follows (in millions):
 
Alliant Energy
 
IPL
 
WPL
 
Excluding FTRs
 
FTRs
 
Excluding FTRs
 
FTRs
 
Excluding FTRs
 
FTRs
March 31, 2020

$11.8

 

$2.4

 

$11.7

 

$1.8

 

$0.1

 

$0.6

December 31, 2019
14.6

 
6.6

 
13.6

 
5.1

 
1.0

 
1.5