Receivables

9 Months Ended

Sep. 30, 2020

Receivables [Line Items]

Receivables

RECEIVABLES

Note 3(a) Accounts Receivable - Details for accounts receivable included on the balance sheets were as follows (in millions):

	Alliant Energy						IPL						WPL
	September 30, 2020			December 31, 2019			September 30, 2020			December 31, 2019			September 30, 2020			December 31, 2019
Customer		$95			$92			$—			$—			$86			$84
Unbilled utility revenues	62			82			—			—			62			82
Deferred proceeds	201			188			201			188			—			—
Other	54			47			20			16			33			31
Allowance for expected credit losses	(13		)	(7		)	(2		)	(1		)	(11		)	(6		)
		$399			$402			$219			$203			$170			$191

Note 3(b) Sales of Accounts Receivable - IPL maintains a Receivables Purchase and Sale Agreement (Receivables Agreement) whereby it may sell its customer accounts receivables, unbilled revenues and certain other accounts receivables to a third party through wholly-owned and consolidated special purpose entities. The transfers of receivables meet the criteria for sale accounting established by the transfer of financial assets accounting rules. As of September 30, 2020, IPL had $109 million of available capacity under its sales of accounts receivable program. IPL’s maximum and average outstanding cash proceeds (based on daily outstanding balances) related to the sales of accounts receivable program for the three and nine months ended September 30 were as follows (in millions):

	Three Months				Nine Months
	2020		2019		2020		2019
Maximum outstanding aggregate cash proceeds		$1		$103		$96		$108
Average outstanding aggregate cash proceeds	1		45		12		43

The attributes of IPL’s receivables sold under the Receivables Agreement were as follows (in millions):

	September 30, 2020		December 31, 2019
Customer accounts receivable		$148		$125
Unbilled utility revenues	67		95
Other receivables	—		1
Receivables sold to third party	215		221
Less: cash proceeds	1		27
Deferred proceeds	214		194
Less: allowance for expected credit losses	13		6
Fair value of deferred proceeds		$201		$188

As of September 30, 2020, outstanding receivables past due under the Receivables Agreement were $27 million. Additional attributes of IPL’s receivables sold under the Receivables Agreement for the three and nine months ended September 30 were as follows (in millions):

	Three Months				Nine Months
	2020		2019		2020		2019
Collections		$561		$592		$1,555		$1,636
Write-offs, net of recoveries	1		3		4		11

IPL [Member]

Receivables [Line Items]

Receivables

RECEIVABLES

Note 3(a) Accounts Receivable - Details for accounts receivable included on the balance sheets were as follows (in millions):

	Alliant Energy						IPL						WPL
	September 30, 2020			December 31, 2019			September 30, 2020			December 31, 2019			September 30, 2020			December 31, 2019
Customer		$95			$92			$—			$—			$86			$84
Unbilled utility revenues	62			82			—			—			62			82
Deferred proceeds	201			188			201			188			—			—
Other	54			47			20			16			33			31
Allowance for expected credit losses	(13		)	(7		)	(2		)	(1		)	(11		)	(6		)
		$399			$402			$219			$203			$170			$191

Note 3(b) Sales of Accounts Receivable - IPL maintains a Receivables Purchase and Sale Agreement (Receivables Agreement) whereby it may sell its customer accounts receivables, unbilled revenues and certain other accounts receivables to a third party through wholly-owned and consolidated special purpose entities. The transfers of receivables meet the criteria for sale accounting established by the transfer of financial assets accounting rules. As of September 30, 2020, IPL had $109 million of available capacity under its sales of accounts receivable program. IPL’s maximum and average outstanding cash proceeds (based on daily outstanding balances) related to the sales of accounts receivable program for the three and nine months ended September 30 were as follows (in millions):

	Three Months				Nine Months
	2020		2019		2020		2019
Maximum outstanding aggregate cash proceeds		$1		$103		$96		$108
Average outstanding aggregate cash proceeds	1		45		12		43

The attributes of IPL’s receivables sold under the Receivables Agreement were as follows (in millions):

	September 30, 2020		December 31, 2019
Customer accounts receivable		$148		$125
Unbilled utility revenues	67		95
Other receivables	—		1
Receivables sold to third party	215		221
Less: cash proceeds	1		27
Deferred proceeds	214		194
Less: allowance for expected credit losses	13		6
Fair value of deferred proceeds		$201		$188

As of September 30, 2020, outstanding receivables past due under the Receivables Agreement were $27 million. Additional attributes of IPL’s receivables sold under the Receivables Agreement for the three and nine months ended September 30 were as follows (in millions):

	Three Months				Nine Months
	2020		2019		2020		2019
Collections		$561		$592		$1,555		$1,636
Write-offs, net of recoveries	1		3		4		11

WPL [Member]

Receivables [Line Items]

Receivables

RECEIVABLES

Note 3(a) Accounts Receivable - Details for accounts receivable included on the balance sheets were as follows (in millions):

	Alliant Energy						IPL						WPL
	September 30, 2020			December 31, 2019			September 30, 2020			December 31, 2019			September 30, 2020			December 31, 2019
Customer		$95			$92			$—			$—			$86			$84
Unbilled utility revenues	62			82			—			—			62			82
Deferred proceeds	201			188			201			188			—			—
Other	54			47			20			16			33			31
Allowance for expected credit losses	(13		)	(7		)	(2		)	(1		)	(11		)	(6		)
		$399			$402			$219			$203			$170			$191