IPUC (Details) - Natural gas distribution - IPUC - Intermountain Gas Co. - Subsequent Event [Member] $ in Millions	Aug. 01, 2022 USD ($)
Public Utilities, General Disclosures [Line Items]
Public Utilities, Approved Rate Increase (Decrease), Amount	$ 67.0
Public Utilities, Approved Rate Increase (Decrease), Percentage	25.20%

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