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Receivables (Tables) | 3 Months Ended
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Mar. 31, 2016
Receivables [Line Items] |
Maximum And Average Outstanding Cash Proceeds | IPL’s maximum and average outstanding cash proceeds related to the sales of accounts receivable program for the three months ended March 31 were as follows (in millions):
| 2016 |  | 2015
Maximum outstanding aggregate cash proceeds (based on daily outstanding balances) |  | $75.0 |  |  |  | $118.0 |
Average outstanding aggregate cash proceeds (based on daily outstanding balances) | 39.1 |  |  | 68.0 |
Receivables Sold Under The Receivables Agreement | The attributes of IPL’s receivables sold under the Receivables Agreement were as follows (in millions):
| March 31, 2016 |  | December 31, 2015
Customer accounts receivable |  | $142.7 |  |  |  | $109.7 |
Unbilled utility revenues | 77.5 |  |  | 71.3 |
Other receivables | 0.3 |  |  | 0.1 |
Receivables sold to third party | 220.5 |  |  | 181.1 |
Less: cash proceeds (a) | 62.0 |  |  | 5.0 |
Deferred proceeds | 158.5 |  |  | 176.1 |
Less: allowance for doubtful accounts | 4.3 |  |  | 4.1 |
Fair value of deferred proceeds |  | $154.2 |  |  |  | $172.0 |
(a) | Changes in cash proceeds are presented in “Sales of accounts receivable” in operating activities in Alliant Energy’s and IPL’s cash flows statements.
Additional Attributes Of Receivables Sold Under The Receivables Agreement | Additional attributes of IPL’s receivables sold under the Receivables Agreement for the three months ended March 31 were as follows (in millions):
| 2016 |  | 2015
Collections reinvested in receivables |  | $440.2 |  |  |  | $505.9 |
Credit losses, net of recoveries | 0.4 |  |  | 1.0 |
IPL [Member] |
Receivables [Line Items] |
Maximum And Average Outstanding Cash Proceeds | IPL’s maximum and average outstanding cash proceeds related to the sales of accounts receivable program for the three months ended March 31 were as follows (in millions):
| 2016 |  | 2015
Maximum outstanding aggregate cash proceeds (based on daily outstanding balances) |  | $75.0 |  |  |  | $118.0 |
Average outstanding aggregate cash proceeds (based on daily outstanding balances) | 39.1 |  |  | 68.0 |
Receivables Sold Under The Receivables Agreement | The attributes of IPL’s receivables sold under the Receivables Agreement were as follows (in millions):
| March 31, 2016 |  | December 31, 2015
Customer accounts receivable |  | $142.7 |  |  |  | $109.7 |
Unbilled utility revenues | 77.5 |  |  | 71.3 |
Other receivables | 0.3 |  |  | 0.1 |
Receivables sold to third party | 220.5 |  |  | 181.1 |
Less: cash proceeds (a) | 62.0 |  |  | 5.0 |
Deferred proceeds | 158.5 |  |  | 176.1 |
Less: allowance for doubtful accounts | 4.3 |  |  | 4.1 |
Fair value of deferred proceeds |  | $154.2 |  |  |  | $172.0 |
(a) | Changes in cash proceeds are presented in “Sales of accounts receivable” in operating activities in Alliant Energy’s and IPL’s cash flows statements.
Additional Attributes Of Receivables Sold Under The Receivables Agreement | Additional attributes of IPL’s receivables sold under the Receivables Agreement for the three months ended March 31 were as follows (in millions):
| 2016 |  | 2015
Collections reinvested in receivables |  | $440.2 |  |  |  | $505.9 |
Credit losses, net of recoveries | 0.4 |  |  | 1.0 |

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