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CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2015 | Mar. 31, 2014
OPERATING REVENUES | $ 671,219 us-gaap_SalesRevenueNet | $ 686,251 us-gaap_SalesRevenueNet
OPERATING EXPENSES |  |
Fuel and purchased power | 223,237 us-gaap_CostOfGoodsSoldElectric | 249,786 us-gaap_CostOfGoodsSoldElectric
Operations and maintenance | 214,944 us-gaap_UtilitiesOperatingExpenseMaintenanceAndOperations | 212,882 us-gaap_UtilitiesOperatingExpenseMaintenanceAndOperations
Depreciation and amortization | 120,949 us-gaap_CostOfServicesDepreciationAndAmortization | 101,772 us-gaap_CostOfServicesDepreciationAndAmortization
Taxes other than income taxes | 43,216 us-gaap_TaxesExcludingIncomeAndExciseTaxes | 45,845 us-gaap_TaxesExcludingIncomeAndExciseTaxes
Other expenses | 1,189 us-gaap_OtherCostAndExpenseOperating | 796 us-gaap_OtherCostAndExpenseOperating
Total | 603,535 us-gaap_CostsAndExpenses | 611,081 us-gaap_CostsAndExpenses
OPERATING INCOME | 67,684 us-gaap_OperatingIncomeLoss | 75,170 us-gaap_OperatingIncomeLoss
OTHER INCOME (DEDUCTIONS) |  |
Allowance for equity funds used during construction | 9,224 us-gaap_PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity | 7,442 us-gaap_PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity
Other income | 235 us-gaap_OtherNonoperatingIncome | 2,367 us-gaap_OtherNonoperatingIncome
Other expense | (4,286)us-gaap_OtherNonoperatingExpense | (4,684)us-gaap_OtherNonoperatingExpense
Total | 5,173 us-gaap_NonoperatingIncomeExpense | 5,125 us-gaap_NonoperatingIncomeExpense
INTEREST EXPENSE |  |
Interest charges | 48,399 us-gaap_InterestCostsIncurred | 52,969 us-gaap_InterestCostsIncurred
Allowance for borrowed funds used during construction | (4,216)us-gaap_PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedInterest | (3,770)us-gaap_PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedInterest
Total | 44,183 us-gaap_InterestExpense | 49,199 us-gaap_InterestExpense
INCOME BEFORE INCOME TAXES | 28,674 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest | 31,096 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
INCOME TAXES | 7,947 us-gaap_IncomeTaxExpenseBenefit | 6,405 us-gaap_IncomeTaxExpenseBenefit
NET INCOME | 20,727 us-gaap_ProfitLoss | 24,691 us-gaap_ProfitLoss
Less: Net income attributable to noncontrolling interests (Note 6) | 4,605 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest | 8,925 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest
NET INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS | 16,122 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic | 15,766 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic
WEIGHTED-AVERAGE COMMON SHARES OUTSTANDING |  |
WEIGHTED-AVERAGE COMMON SHARES OUTSTANDING - BASIC (in shares) | 110,916 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 110,257 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
WEIGHTED-AVERAGE COMMON SHARES OUTSTANDING - DILUTED (in shares) | 111,377 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | 110,888 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding
EARNINGS PER WEIGHTED-AVERAGE COMMON SHARE OUTSTANDING |  |
Net income attributable to common shareholders - basic (in dollars per share) | $ 0.15 us-gaap_EarningsPerShareBasic | $ 0.14 us-gaap_EarningsPerShareBasic
Net income attributable to common shareholders - diluted (in dollars per share) | $ 0.14 us-gaap_EarningsPerShareDiluted | $ 0.14 us-gaap_EarningsPerShareDiluted
Arizona Public Service Company |  |
ELECTRIC OPERATING REVENUES | 670,668 us-gaap_ElectricDomesticRegulatedRevenue / dei_LegalEntityAxis = pnw_ArizonaPublicServiceCompanyMember | 685,545 us-gaap_ElectricDomesticRegulatedRevenue / dei_LegalEntityAxis = pnw_ArizonaPublicServiceCompanyMember
OPERATING EXPENSES |  |
Fuel and purchased power | 223,237 us-gaap_CostOfGoodsSoldElectric / dei_LegalEntityAxis = pnw_ArizonaPublicServiceCompanyMember | 249,786 us-gaap_CostOfGoodsSoldElectric / dei_LegalEntityAxis = pnw_ArizonaPublicServiceCompanyMember
Operations and maintenance | 209,947 us-gaap_UtilitiesOperatingExpenseMaintenanceAndOperations / dei_LegalEntityAxis = pnw_ArizonaPublicServiceCompanyMember | 208,285 us-gaap_UtilitiesOperatingExpenseMaintenanceAndOperations / dei_LegalEntityAxis = pnw_ArizonaPublicServiceCompanyMember
Depreciation and amortization | 120,926 us-gaap_CostOfServicesDepreciationAndAmortization / dei_LegalEntityAxis = pnw_ArizonaPublicServiceCompanyMember | 101,748 us-gaap_CostOfServicesDepreciationAndAmortization / dei_LegalEntityAxis = pnw_ArizonaPublicServiceCompanyMember
Income taxes | 12,239 pnw_OperatingIncomeTaxExpenseBenefit / dei_LegalEntityAxis = pnw_ArizonaPublicServiceCompanyMember | 10,478 pnw_OperatingIncomeTaxExpenseBenefit / dei_LegalEntityAxis = pnw_ArizonaPublicServiceCompanyMember
Taxes other than income taxes | 42,986 us-gaap_TaxesExcludingIncomeAndExciseTaxes / dei_LegalEntityAxis = pnw_ArizonaPublicServiceCompanyMember | 45,613 us-gaap_TaxesExcludingIncomeAndExciseTaxes / dei_LegalEntityAxis = pnw_ArizonaPublicServiceCompanyMember
Total | 609,335 us-gaap_CostsAndExpenses / dei_LegalEntityAxis = pnw_ArizonaPublicServiceCompanyMember | 615,910 us-gaap_CostsAndExpenses / dei_LegalEntityAxis = pnw_ArizonaPublicServiceCompanyMember
OPERATING INCOME | 61,333 us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = pnw_ArizonaPublicServiceCompanyMember | 69,635 us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = pnw_ArizonaPublicServiceCompanyMember
OTHER INCOME (DEDUCTIONS) |  |
Income taxes | 2,151 pnw_NonoperatingIncomeTaxExpenseBenefit / dei_LegalEntityAxis = pnw_ArizonaPublicServiceCompanyMember | 1,210 pnw_NonoperatingIncomeTaxExpenseBenefit / dei_LegalEntityAxis = pnw_ArizonaPublicServiceCompanyMember
Allowance for equity funds used during construction | 9,224 us-gaap_PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity / dei_LegalEntityAxis = pnw_ArizonaPublicServiceCompanyMember | 7,442 us-gaap_PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity / dei_LegalEntityAxis = pnw_ArizonaPublicServiceCompanyMember
Other income | 639 us-gaap_OtherNonoperatingIncome / dei_LegalEntityAxis = pnw_ArizonaPublicServiceCompanyMember | 2,762 us-gaap_OtherNonoperatingIncome / dei_LegalEntityAxis = pnw_ArizonaPublicServiceCompanyMember
Other expense | (5,354)us-gaap_OtherNonoperatingExpense / dei_LegalEntityAxis = pnw_ArizonaPublicServiceCompanyMember | (5,056)us-gaap_OtherNonoperatingExpense / dei_LegalEntityAxis = pnw_ArizonaPublicServiceCompanyMember
Total | 6,660 us-gaap_NonoperatingIncomeExpense / dei_LegalEntityAxis = pnw_ArizonaPublicServiceCompanyMember | 6,358 us-gaap_NonoperatingIncomeExpense / dei_LegalEntityAxis = pnw_ArizonaPublicServiceCompanyMember
INTEREST EXPENSE |  |
Interest on long-term debt | 45,428 us-gaap_InterestExpenseLongTermDebt / dei_LegalEntityAxis = pnw_ArizonaPublicServiceCompanyMember | 48,896 us-gaap_InterestExpenseLongTermDebt / dei_LegalEntityAxis = pnw_ArizonaPublicServiceCompanyMember
Interest on short-term borrowings | 1,174 us-gaap_InterestExpenseShortTermBorrowings / dei_LegalEntityAxis = pnw_ArizonaPublicServiceCompanyMember | 1,413 us-gaap_InterestExpenseShortTermBorrowings / dei_LegalEntityAxis = pnw_ArizonaPublicServiceCompanyMember
Debt discount, premium and expense | 1,134 us-gaap_DebtRelatedCommitmentFeesAndDebtIssuanceCosts / dei_LegalEntityAxis = pnw_ArizonaPublicServiceCompanyMember | 1,011 us-gaap_DebtRelatedCommitmentFeesAndDebtIssuanceCosts / dei_LegalEntityAxis = pnw_ArizonaPublicServiceCompanyMember
Allowance for borrowed funds used during construction | (4,216)us-gaap_PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedInterest / dei_LegalEntityAxis = pnw_ArizonaPublicServiceCompanyMember | (3,770)us-gaap_PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedInterest / dei_LegalEntityAxis = pnw_ArizonaPublicServiceCompanyMember
Total | 43,520 us-gaap_InterestExpense / dei_LegalEntityAxis = pnw_ArizonaPublicServiceCompanyMember | 47,550 us-gaap_InterestExpense / dei_LegalEntityAxis = pnw_ArizonaPublicServiceCompanyMember
NET INCOME | 24,473 us-gaap_ProfitLoss / dei_LegalEntityAxis = pnw_ArizonaPublicServiceCompanyMember | 28,443 us-gaap_ProfitLoss / dei_LegalEntityAxis = pnw_ArizonaPublicServiceCompanyMember
Less: Net income attributable to noncontrolling interests (Note 6) | 4,605 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = pnw_ArizonaPublicServiceCompanyMember | 8,925 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = pnw_ArizonaPublicServiceCompanyMember
NET INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS | $ 19,868 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / dei_LegalEntityAxis = pnw_ArizonaPublicServiceCompanyMember | $ 19,518 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic / dei_LegalEntityAxis = pnw_ArizonaPublicServiceCompanyMember

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