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Lines of Credit and Short-Term Borrowings - Additional Information (Details)
$ in Thousands
Dec. 31, 2022
USD ($)
Facility
Dec. 31, 2021
USD ($)
Dec. 17, 2020
USD ($)
Arizona Public Service Company | ACC      
Debt Provisions      
Percentage of APS's capitalization used in calculation of short-term debt authorization     7.00%
Required amount to be used in purchases of natural gas and power which is used in calculation of short-term debt authorization     $ 500,000
Revolving credit facility      
Lines of Credit and Short-Term Borrowings      
Commitments under Credit Facilities $ 1,200,000 $ 1,200,000  
Long-term line of credit 340,720 292,000  
Revolving credit facility | Arizona Public Service Company      
Lines of Credit and Short-Term Borrowings      
Commitments under Credit Facilities 1,000,000 1,000,000  
Long-term line of credit 325,000 278,700  
Revolving credit facility | Revolving credit facility maturing May 2026 | Arizona Public Service Company      
Lines of Credit and Short-Term Borrowings      
Commitments under Credit Facilities 500,000    
Maximum borrowing capacity on credit facility upon satisfaction of certain conditions and consent of lenders 1,400,000    
Long-term line of credit $ 0    
Number of credit facilities | Facility 2    
Revolving credit facility | Revolving credit facility maturing May 2026, facility two | Arizona Public Service Company      
Lines of Credit and Short-Term Borrowings      
Maximum borrowing capacity on credit facility upon satisfaction of certain conditions and consent of lenders $ 700,000    
Revolving credit facility | Revolving credit facility maturing May 2026, facility one | Arizona Public Service Company      
Lines of Credit and Short-Term Borrowings      
Maximum borrowing capacity on credit facility upon satisfaction of certain conditions and consent of lenders 700,000    
Letter of Credit | Arizona Public Service Company      
Lines of Credit and Short-Term Borrowings      
Outstanding letters of credit 10,000    
Letter of Credit | Revolving credit facility maturing May 2026 | Arizona Public Service Company      
Lines of Credit and Short-Term Borrowings      
Outstanding letters of credit 0    
Commercial paper | Arizona Public Service Company      
Lines of Credit and Short-Term Borrowings      
Maximum commercial paper support available under credit facility 750,000    
Commercial paper | Revolving credit facility maturing May 2026 | Arizona Public Service Company      
Lines of Credit and Short-Term Borrowings      
Commercial paper 325,000    
Pinnacle West | Revolving credit facility      
Lines of Credit and Short-Term Borrowings      
Commitments under Credit Facilities 200,000 200,000  
Long-term line of credit 15,720 $ 13,300  
Pinnacle West | Revolving credit facility | Revolving credit facility maturing May 2026      
Lines of Credit and Short-Term Borrowings      
Commitments under Credit Facilities 200,000    
Maximum borrowing capacity on credit facility upon satisfaction of certain conditions and consent of lenders 300,000    
Long-term line of credit 0    
Pinnacle West | Letter of Credit | Revolving credit facility maturing May 2026      
Lines of Credit and Short-Term Borrowings      
Outstanding letters of credit 0    
Pinnacle West | Commercial paper | Revolving credit facility maturing May 2026      
Lines of Credit and Short-Term Borrowings      
Commercial paper $ 16,000