Balance Sheet Components - Other Property and Investments-Net and Other Non-current Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Balance Sheet Related Disclosures [Abstract]
Equity investments	$ 159,227	$ 153,350
Operating lease ROU assets	$ 66,334	$ 67,585
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Total	Total
Finance lease ROU assets	$ 33,683	$ 36,414
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Total	Total
Non-utility property	$ 33,504	$ 33,813
Notes receivable	15,295	15,287
Long-term prepaid license fees	19,314	19,448
Pension asset	44,278	32,997
Investment in affiliated trust	11,547	11,547
Deferred compensation assets	8,962	7,794
Other	19,607	15,750
Total	$ 411,751	$ 393,985

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