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Income Taxes (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2018 | Dec. 31, 2018 | Dec. 31, 2017
Income Taxes |  |  |
Reduction in net deferred income tax liabilities | $ 11,000,000 |  | $ 1,140,000,000
Regulatory liabilities, non-current |  | $ 2,325,976,000 | 2,452,536,000
Interest income to be received on the overpayment of income taxes for certain adjustments that we have filed, or will file, with the IRS (less than) |  | 1,000,000 |
General business tax credit carryforwards |  | 14,000,000 |
increase (decrease) in deferred income taxes due to regulation adoption |  | 19,000,000 |
ARIZONA PUBLIC SERVICE COMPANY |  |  |
Income Taxes |  |  |
Reduction in net deferred income tax liabilities |  |  | 1,140,000,000
Regulatory liabilities, non-current |  | 2,325,976,000 | 2,452,536,000
Gross-up for revenue requirement of rate regulation |  |  | 377,000,000
Palo Verde VIE |  |  |
Income Taxes |  |  |
Income tax expense benefit attributable to non controlling interests |  | 0 |
Excess deferred income taxes - ACC - Tax Cuts and Jobs Act | ARIZONA PUBLIC SERVICE COMPANY |  |  |
Income Taxes |  |  |
Regulatory liabilities, non-current | $ 9,000,000 |  | $ 1,520,000,000
State |  |  |
Income Taxes |  |  |
Amount of state loss carryforwards |  | $ 7,000,000 |

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- Definition The increase (decrease) during the reporting period in the account that represents the temporary difference that results from Income or Loss that is recognized for accounting purposes but not for tax purposes and vice versa, due to the adoption of regulations. + References No definition available. + Details
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- Definition Represents the amount of interest income to be received on the overpayment of income taxes for certain adjustments that the company has filed, or will file, with the IRS. + References No definition available. + Details
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32621-109319 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32632-109319 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 25 -Paragraph 20 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=115928272&loc=d3e28680-109314 + Details
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