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REGULATORY ENVIRONMENT - PGL (Details) - Illinois Commerce Commission (ICC) - PGL $ in Millions	3 Months Ended
	Sep. 30, 2019 USD ($) Assurance	Jul. 31, 2019 USD ($)
Public Utilities, General Disclosures [Line Items]
Rate base reduction from settlement of 2015 reconciliation		$ 7.0
Total refunds required to ratepayers from settlement of 2015 reconciliation		$ 7.3
Amounts refunded to ratepayers from settlement of 2015 reconciliation	$ 7.1
Amount of assurance that PGL's QIP rider costs will be recoverable | Assurance	0

X

- Definition

The amount of cash paid for the settlement of litigation or for other legal issues during the period.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 25
-Subparagraph (g)
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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.

+ References

No definition available.

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- Definition

Amount of disallowed costs for rate making purposes for recently completed plants in regulated industries.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 980
-SubTopic 360
-Section 35
-Paragraph 12
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-Name Accounting Standards Codification
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-SubTopic 360
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 10.E)
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- Definition

Amount of assurance that the costs incurred under PGL's Qualifying Infrastructure Plant rider will be recoverable.

+ References

No definition available.

+ Details

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- Definition

The total amount required to be refunded to customers as a result of a legal settlement or order.

+ References

No definition available.

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