Balance Sheet Components - Other Property and Investments-Net and Other Non-current Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Balance Sheet Related Disclosures [Abstract]
Operating lease ROU assets	$ 69,673	$ 70,133
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Total	Total
Equity investments	$ 92,795	$ 91,057
Finance lease ROU assets	$ 42,787	$ 43,697
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Total	Total
Non-utility property	$ 26,623	$ 20,033
Notes receivable	15,287	14,949
Long-term prepaid license fees	13,030	8,465
Investment in affiliated trust	11,547	11,547
Deferred compensation assets	8,843	9,513
Other	18,023	11,149
Total	$ 298,608	$ 280,543