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IPUC (Details) - Intermountain Gas Company - Gas Distribution [Member] - IPUC - USD ($) $ in Millions	Feb. 01, 2023	Dec. 01, 2022
Subsequent Event [Member]
Public Utilities, General Disclosures [Line Items]
Public Utilities, Approved Rate Increase (Decrease), Amount	$ 56.5
Public Utilities, Approved Rate Increase (Decrease), Percentage	17.10%
Pending Rate Case [Member]
Public Utilities, General Disclosures [Line Items]
Public Utilities, Requested Rate Increase (Decrease), Amount		$ 11.3
Public Utilities, Requested Rate Increase (Decrease), Percentage		3.20%

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- Definition

Amount of public utility's approved rate increase (decrease) by regulatory agency.

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- Definition

Percentage of public utility's approved rate increase (decrease) by regulatory agency.

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Amount of public utility's requested rate increase (decrease) with regulatory agency.

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Percentage of public utility's requested rate increase (decrease) with regulatory agency.

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