Income Taxes - Schedule of Unrecognized Tax Benefits Roll Forward (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Tabular reconciliation of the total amounts of unrecognized tax benefits, excluding interest and penalties, at the beginning and end of the year
Total unrecognized tax benefits, beginning of the year	$ 44,274	$ 43,097	$ 45,086
Additions for tax positions of the current year	1,271	1,473	1,399
Additions for tax positions of prior years	2,031	419	2,069
Reductions for tax positions of prior years for:
Changes in judgment	(2,043)	661	(3,495)
Settlements with taxing authorities	0	0	0
Lapses of applicable statute of limitations	(1,184)	(1,376)	(1,962)
Total unrecognized tax benefits, end of the year	44,349	44,274	43,097
Arizona Public Service Company
Tabular reconciliation of the total amounts of unrecognized tax benefits, excluding interest and penalties, at the beginning and end of the year
Total unrecognized tax benefits, beginning of the year	44,274	43,097	45,086
Additions for tax positions of the current year	1,271	1,473	1,399
Additions for tax positions of prior years	2,031	419	2,069
Reductions for tax positions of prior years for:
Changes in judgment	(2,043)	661	(3,495)
Settlements with taxing authorities	0	0	0
Lapses of applicable statute of limitations	(1,184)	(1,376)	(1,962)
Total unrecognized tax benefits, end of the year	$ 44,349	$ 44,274	$ 43,097