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Long-Term Debt and Liquidity Matters (Details) - USD ($)
12 Months Ended
May. 19, 2015
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Dec. 08, 2015
Nov. 17, 2015
Nov. 06, 2015
Jun. 26, 2015
May. 28, 2015
Jan. 12, 2015
Feb. 06, 2013
Feb. 05, 2013
Long-Term Debt and Liquidity Matters [Line Items]                        
Repayments of long-term debt   $ 415,570,000 $ 652,578,000 $ 122,828,000                
Debt Provisions                        
Total shareholder equity   $ 4,583,917,000 4,367,493,000                  
Maximum                        
Debt Provisions                        
Ratio of consolidated debt to consolidated capitalization (as a percent)   65.00%                    
ARIZONA PUBLIC SERVICE COMPANY                        
Long-Term Debt and Liquidity Matters [Line Items]                        
Repayments of long-term debt   $ 415,570,000 527,578,000 122,828,000                
Debt Provisions                        
Actual ratio of consolidated debt to total consolidated capitalization required to be maintained as per the debt covenant (as a percent)   46.00%                    
Total shareholder equity   $ 4,679,254,000 4,478,243,000                  
ARIZONA PUBLIC SERVICE COMPANY | ACC                        
Debt Provisions                        
Total shareholder equity   4,700,000,000                    
Total capitalization   8,600,000,000                    
Dividend restrictions, shareholder equity required   $ 3,400,000,000                    
Long term debt authorization                     $ 5,100,000,000.0 $ 4,200,000,000.0
ARIZONA PUBLIC SERVICE COMPANY | Minimum | ACC                        
Debt Provisions                        
Required common equity ratio ordered by ACC (as a percent) (at least)   40.00%                    
Pinnacle West                        
Long-Term Debt and Liquidity Matters [Line Items]                        
Repayments of long-term debt   $ 0 125,000,000 $ 0                
Debt Provisions                        
Actual ratio of consolidated debt to total consolidated capitalization required to be maintained as per the debt covenant (as a percent)   47.00%                    
Total shareholder equity   $ 4,583,917,000 $ 4,367,493,000                  
Unsecured senior notes 2.20 percent matures on 15 January, 2020 | ARIZONA PUBLIC SERVICE COMPANY | Senior notes                        
Long-Term Debt and Liquidity Matters [Line Items]                        
Notes issued                   $ 250,000,000    
Interest rate (as a percent)                   2.20%    
Unsecured senior notes 3.15 percent matures on 15 May, 2025 | ARIZONA PUBLIC SERVICE COMPANY | Senior notes                        
Long-Term Debt and Liquidity Matters [Line Items]                        
Notes issued $ 300,000,000                      
Interest rate (as a percent) 3.15%                      
Unsecured senior notes 4.65 percent matures on 15 May, 2015 | ARIZONA PUBLIC SERVICE COMPANY | Senior notes                        
Long-Term Debt and Liquidity Matters [Line Items]                        
Interest rate (as a percent) 4.65%                      
Repayments of long-term debt $ 300,000,000                      
Arizona pollution control revenue refunding bond, 2009 series B | ARIZONA PUBLIC SERVICE COMPANY                        
Long-Term Debt and Liquidity Matters [Line Items]                        
Principal balance repaid                 $ 32,000,000      
Arizona pollution control revenue refunding bond, 2009 series B | ARIZONA PUBLIC SERVICE COMPANY | Current maturities of long-term debt                        
Long-Term Debt and Liquidity Matters [Line Items]                        
Principal balance repaid           $ 32,000,000            
Term loan facility maturing June 26, 2018 | ARIZONA PUBLIC SERVICE COMPANY | Term loan                        
Long-Term Debt and Liquidity Matters [Line Items]                        
Notes issued               $ 50,000,000        
Arizona pollution control corporation revenue refunding bonds, 2009 series A | ARIZONA PUBLIC SERVICE COMPANY | Current maturities of long-term debt                        
Long-Term Debt and Liquidity Matters [Line Items]                        
Principal balance repaid           $ 38,150,000            
Unsecured senior notes 4.35 percent mature on 15 November, 2020 | ARIZONA PUBLIC SERVICE COMPANY | Senior notes                        
Long-Term Debt and Liquidity Matters [Line Items]                        
Notes issued             $ 250,000,000          
Interest rate (as a percent)             4.35%          
Arizona pollution control corporation revenue refunding bonds, 2009 series C | ARIZONA PUBLIC SERVICE COMPANY | Current maturities of long-term debt                        
Long-Term Debt and Liquidity Matters [Line Items]                        
Principal balance repaid         $ 32,000,000