Debt - Mountaineer (Details) - Mountaineer - 4.49% Senior Notes Due August 2052 - Senior Notes - USD ($)	Aug. 16, 2022	Jun. 30, 2022
Debt Instrument [Line Items]
Aggregate principal amount	$ 40,000,000	$ 40,000,000
Stated interest rate (as a percentage)	4.49%	4.49%

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