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Employee Postretirement Benefits - Summary of Composition of Periodic Benefit Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Retirement Benefits [Abstract]
Net Periodic Benefit Cost	$ (7,487)	$ 5,913	$ 11,366
Net Amount Amortized Due to the Effect of Regulation	1,225	1,121	21
Net Periodic Benefit Cost Recognized	$ (6,262)	$ 7,034	$ 11,387

X

- Definition

Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Deferred

+ References

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X

- Definition

Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Net of Deferrals

+ References

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- Definition

Amount of net periodic benefit cost (credit) for defined benefit plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 17
-Publisher FASB
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-Topic 715
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