Derivative Commodities and Disclosures (Details) MWh in Thousands, MMBTU in Thousands	Jun. 30, 2022 MWh MMBTU	Jun. 30, 2021 MWh MMBTU
Electricity (MWh) \| Long
Derivative
Derivative, Number of Instruments Held \| MWh	541	254
Electricity (MWh) \| Short
Derivative
Derivative, Number of Instruments Held \| MWh	118	10
Natural Gas (MMBTU) \| Long
Derivative
Derivative, Number of Instruments Held \| MMBTU	21,215	14,455
Natural Gas (MMBTU) \| Short
Derivative
Derivative, Number of Instruments Held \| MMBTU	0	75

The number of derivative instruments of a particular group held by the entity.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5579245-113959

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5580258-113959

Name:	us-gaap_DerivativeNumberOfInstrumentsHeld
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant