Summary of Significant Accounting Policies - Schedule of Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Cash and Cash Equivalents [Line Items]
Income taxes, net of refunds	$ 133,968	$ 8,788	$ 46,227
Interest, net of amounts capitalized	360,349	310,996	245,271
Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract]
Accrued capital expenditures	257,494	206,269	114,999
Dividends accrued but not yet paid	106,592	99,813	97,895
BCE Sale non-cash consideration (Note 20)	0	28,262	0
Arizona Public Service Company
Cash and Cash Equivalents [Line Items]
Income taxes, net of refunds	179,013	21,734	95,985
Interest, net of amounts capitalized	299,799	267,261	227,159
Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract]
Accrued capital expenditures	257,494	206,269	116,533
Dividends accrued but not yet paid	$ 107,200	$ 99,800	$ 97,900