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Receivables (Tables) | 6 Months Ended
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Jun. 30, 2021
Receivables [Line Items] |
Maximum And Average Outstanding Cash Proceeds | 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 six months ended June 30 were as follows (in millions):
| Three Months |  | Six Months
| 2021 |  | 2020 |  | 2021 |  | 2020
Maximum outstanding aggregate cash proceeds | $110 |  | $65 |  | $110 |  | $96
Average outstanding aggregate cash proceeds | 61 |  | 11 |  | 46 |  | 17
Attributes of Receivables Sold Under the Receivables Agreement | The attributes of IPL’s receivables sold under the Receivables Agreement were as follows (in millions):
| June 30, 2021 |  | December 31, 2020
Customer accounts receivable | $125 |  | $114
Unbilled utility revenues | 88 |  | 92
Receivables sold to third party | 213 |  | 206
Less: cash proceeds | 45 |  | 1
Deferred proceeds | 168 |  | 205
Less: allowance for expected credit losses | 14 |  | 17
Fair value of deferred proceeds | $154 |  | $188
Additional Attributes Of Receivables Sold Under The Receivables Agreement | Additional attributes of IPL’s receivables sold under the Receivables Agreement for the three and six months ended June 30 were as follows (in millions):
| Three Months |  | Six Months
| 2021 |  | 2020 |  | 2021 |  | 2020
Collections | $453 |  | $453 |  | $982 |  | $994
Write-offs, net of recoveries | 1 |  | 1 |  | 3 |  | 3
IPL [Member] |
Receivables [Line Items] |
Maximum And Average Outstanding Cash Proceeds | 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 six months ended June 30 were as follows (in millions):
| Three Months |  | Six Months
| 2021 |  | 2020 |  | 2021 |  | 2020
Maximum outstanding aggregate cash proceeds | $110 |  | $65 |  | $110 |  | $96
Average outstanding aggregate cash proceeds | 61 |  | 11 |  | 46 |  | 17
Attributes of Receivables Sold Under the Receivables Agreement | The attributes of IPL’s receivables sold under the Receivables Agreement were as follows (in millions):
| June 30, 2021 |  | December 31, 2020
Customer accounts receivable | $125 |  | $114
Unbilled utility revenues | 88 |  | 92
Receivables sold to third party | 213 |  | 206
Less: cash proceeds | 45 |  | 1
Deferred proceeds | 168 |  | 205
Less: allowance for expected credit losses | 14 |  | 17
Fair value of deferred proceeds | $154 |  | $188
Additional Attributes Of Receivables Sold Under The Receivables Agreement | Additional attributes of IPL’s receivables sold under the Receivables Agreement for the three and six months ended June 30 were as follows (in millions):
| Three Months |  | Six Months
| 2021 |  | 2020 |  | 2021 |  | 2020
Collections | $453 |  | $453 |  | $982 |  | $994
Write-offs, net of recoveries | 1 |  | 1 |  | 3 |  | 3

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- Definition Tabular disclosure of allowance for credit loss on financing receivable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 + Details
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