Long-Term Debt and Liquidity Matters (Details 2) (USD $)	Dec. 31, 2011
ARIZONA PUBLIC SERVICE COMPANY
Principal payments due on long-term debt and capitalized lease requirements
2012	$ 477,000,000
2013	123,000,000
2014	502,000,000
2015	313,000,000
2016	358,000,000
Thereafter	1,606,000,000
Total	3,379,000,000
Pinnacle West
Principal payments due on long-term debt and capitalized lease requirements
2012	477,000,000
2013	123,000,000
2014	502,000,000
2015	438,000,000
2016	358,000,000
Thereafter	1,606,000,000
Total	$ 3,504,000,000

Including current and noncurrent portions, aggregate carrying amount of long-term borrowings as of the balance sheet date before deducting unamortized discount or premiums (if any). May include notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, which had initial maturities beyond one year or beyond the normal operating cycle, if longer.

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