Public Utilities, Additional Approved Step Increase (Decrease), Amount

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- Definition

Public Utilities, Approved Distribution Revenue Increase (Decrease), Amount

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No definition available.

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- Definition

Public Utilities, Approved Revenue

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No definition available.

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- Definition

Public Utilities, Approved Step Increase (Decrease), Amount

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No definition available.

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- Definition

Public Utilities, Deferred Revenue

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- Definition

Public Utilities, Weighted Average Cost of Capital

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- Definition

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

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No definition available.

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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.

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Amortization period for the recovery of regulatory liability, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Regulatory matters - Approved Annual Revenue Increases (Details) - USD ($) $ in Thousands			3 Months Ended
	Aug. 01, 2021	Jun. 01, 2021	Jun. 30, 2021
BELCO (Bermuda) [Member]
Regulatory Liabilities [Line Items]
Weighted average cost of capital (percent)		7.50%
Authorized revenue		$ 211,432
Deferred earned revenue		$ 13,426
Deferred revenue, amortization period		5 years
Energy North Gas System \| Subsequent Event
Regulatory Liabilities [Line Items]
Annual distribution revenue increase (decrease)	$ 1,300
Approved revenue increase (decrease)	7,600
Approved step increase (decrease)	4,000
Approved second step increase (decrease)	$ 3,200
Various
Regulatory Liabilities [Line Items]
Approved revenue increase (decrease)			$ 340