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SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF REGISTRANT - Consolidated Balance Sheets (Details) - USD ($) | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
--- | --- | --- | --- | ---
Current assets |  |  |  |
Cash and cash equivalents | $ 13,892,000 | $ 8,881,000 | $ 39,488,000 | $ 7,604,000
Accounts receivable | 305,147,000 | 250,491,000 |  |
Income tax receivable | 0 | 3,751,000 |  |
Other current assets | 48,039,000 | 45,028,000 |  |
Total current assets | 1,016,288,000 | 822,219,000 |  |
Investments and other assets |  |  |  |
Other assets | 84,531,000 | 69,063,000 |  |
Total investments and other assets | 955,582,000 | 848,650,000 |  |
Total Assets | 17,019,082,000 | 16,004,253,000 |  |
Current liabilities |  |  |  |
Accounts payable | 256,442,000 | 264,631,000 |  |
Accrued taxes | 148,946,000 | 138,964,000 |  |
Common dividends payable | 77,667,000 | 72,926,000 |  |
Short-term borrowings | 95,400,000 | 177,200,000 |  |
Current maturities of long-term debt | 82,000,000 | 125,000,000 |  |
Other current liabilities | 246,529,000 | 244,000,000 |  |
Total current liabilities | 1,197,852,000 | 1,292,946,000 |  |
Deferred credits and other |  |  |  |
Long-term debt less current maturities | 4,789,713,000 | 4,021,785,000 |  |
Other | 148,909,000 | 156,784,000 |  |
Total deferred credits and other | 5,895,787,000 | 5,753,610,000 |  |
Common stock equity |  |  |  |
Common stock | 2,614,805,000 | 2,596,030,000 |  |
Accumulated other comprehensive loss | (45,002,000) | (43,822,000) |  |
Retained earnings | 2,442,511,000 | 2,255,547,000 |  |
Total shareholders’ equity | 5,006,690,000 | 4,803,622,000 |  |
Noncontrolling interests | 129,040,000 | 132,290,000 |  |
Total equity | 5,135,730,000 | 4,935,912,000 | 4,719,457,000 | 4,519,102,000
Total Liabilities and Equity | 17,019,082,000 | 16,004,253,000 |  |
Pinnacle West |  |  |  |
Current assets |  |  |  |
Cash and cash equivalents | 41,000 | 41,000 | $ 17,432,000 | $ 3,088,000
Accounts receivable | 93,554,000 | 81,751,000 |  |
Income tax receivable | 19,124,000 | 0 |  |
Other current assets | 267,000 | 340,000 |  |
Total current assets | 112,986,000 | 82,132,000 |  |
Investments and other assets |  |  |  |
Investments in subsidiaries | 5,465,137,000 | 5,084,035,000 |  |
Deferred income taxes | 54,352,000 | 53,805,000 |  |
Other assets | 44,613,000 | 38,500,000 |  |
Total investments and other assets | 5,564,102,000 | 5,176,340,000 |  |
Total Assets | 5,677,088,000 | 5,258,472,000 |  |
Current liabilities |  |  |  |
Accounts payable | 7,638,000 | 5,421,000 |  |
Accrued taxes | 8,927,000 | 12,050,000 |  |
Common dividends payable | 77,667,000 | 72,926,000 |  |
Short-term borrowings | 95,400,000 | 41,700,000 |  |
Current maturities of long-term debt | 0 | 125,000,000 |  |
Other current liabilities | 17,417,000 | 31,182,000 |  |
Total current liabilities | 207,049,000 | 288,279,000 |  |
Deferred credits and other |  |  |  |
Long-term debt less current maturities | 298,421,000 | 0 |  |
Pension liabilities | 20,758,000 | 21,057,000 |  |
Other | 15,130,000 | 13,224,000 |  |
Total deferred credits and other | 35,888,000 | 34,281,000 |  |
Common stock equity |  |  |  |
Common stock | 2,609,181,000 | 2,591,897,000 |  |
Accumulated other comprehensive loss | (45,002,000) | (43,822,000) |  |
Retained earnings | 2,442,511,000 | 2,255,547,000 |  |
Total shareholders’ equity | 5,006,690,000 | 4,803,622,000 |  |
Noncontrolling interests | 129,040,000 | 132,290,000 |  |
Total equity | 5,135,730,000 | 4,935,912,000 |  |
Total Liabilities and Equity | $ 5,677,088,000 | $ 5,258,472,000 |  |

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