Face (par) amount of debt instrument at time of issuance.

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Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Fair Value of Financial Instruments - Narrative (Details) - USD ($) $ in Millions	Sep. 30, 2022	Apr. 28, 2022	Dec. 31, 2021
Unsecured Private Placement Notes \| BVESI
Fair value of financial instruments
Debt Instrument, Face Amount		$ 35.0
Mutual Funds \| Fair Value, Inputs, Level 1
Fair value of financial instruments
Long-term debt-GSWC	$ 25.0		$ 31.5