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CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands | Mar. 31, 2017 | Dec. 31, 2016
--- | --- | ---
CURRENT ASSETS |  |
Cash and cash equivalents | $ 3,028 | $ 8,881
Customer and other receivables | 191,175 | 250,491
Accrued unbilled revenues | 101,226 | 107,949
Allowance for doubtful accounts | (1,946) | (3,037)
Materials and supplies (at average cost) | 252,598 | 253,979
Fossil fuel (at average cost) | 30,656 | 28,608
Income tax receivable | 9,531 | 3,751
Assets from risk management activities (Note 6) | 4,222 | 19,694
Deferred fuel and purchased power regulatory asset (Note 3) | 17,625 | 12,465
Other regulatory assets (Note 3) | 138,316 | 94,410
Other current assets | 48,565 | 45,028
Total current assets | 794,996 | 822,219
INVESTMENTS AND OTHER ASSETS |  |
Assets from risk management activities (Note 6) | 0 | 1
Nuclear decommissioning trust (Note 11) | 805,048 | 779,586
Other assets | 70,025 | 69,063
Total investments and other assets | 875,073 | 848,650
PROPERTY, PLANT AND EQUIPMENT |  |
Plant in service and held for future use | 17,436,720 | 17,341,888
Accumulated depreciation and amortization | (6,060,254) | (5,970,100)
Net | 11,376,466 | 11,371,788
Construction work in progress | 1,005,797 | 1,019,947
Palo Verde sale leaseback, net of accumulated depreciation (Note 5) | 112,548 | 113,515
Intangible assets, net of accumulated amortization | 251,208 | 90,022
Nuclear fuel, net of accumulated amortization | 135,821 | 119,004
Total property, plant and equipment | 12,881,840 | 12,714,276
DEFERRED DEBITS |  |
Regulatory assets (Note 3) | 1,321,473 | 1,313,428
Assets for other postretirement benefits (Note 4) | 175,414 | 166,206
Other | 144,029 | 139,474
Total deferred debits | 1,640,916 | 1,619,108
TOTAL ASSETS | 16,192,825 | 16,004,253
CURRENT LIABILITIES |  |
Accounts payable | 250,197 | 264,631
Accrued taxes | 182,812 | 138,964
Accrued interest | 48,576 | 52,835
Common dividends payable | 0 | 72,926
Short-term borrowings (Note 2) | 207,297 | 177,200
Current maturities of long-term debt (Note 2) | 125,000 | 125,000
Customer deposits | 76,149 | 82,520
Liabilities from risk management activities (Note 6) | 41,932 | 25,836
Liabilities for asset retirements | 8,627 | 9,135
Regulatory liabilities (Note 3) | 101,208 | 99,899
Other current liabilities | 152,015 | 244,000
Total current liabilities | 1,193,813 | 1,292,946
LONG-TERM DEBT LESS CURRENT MATURITIES (Note 2) | 4,273,890 | 4,021,785
DEFERRED CREDITS AND OTHER |  |
Deferred income taxes | 2,955,441 | 2,945,232
Regulatory liabilities (Note 3) | 948,293 | 948,916
Liabilities for asset retirements | 623,394 | 615,340
Liabilities for pension benefits (Note 4) | 469,746 | 509,310
Liabilities from risk management activities (Note 6) | 63,213 | 47,238
Customer advances | 92,113 | 88,672
Coal mine reclamation | 224,516 | 221,910
Deferred investment tax credit | 209,818 | 210,162
Unrecognized tax benefits | 10,172 | 10,046
Other | 162,476 | 156,784
Total deferred credits and other | 5,759,182 | 5,753,610
COMMITMENTS AND CONTINGENCIES (SEE NOTE 7) |  |
EQUITY |  |
Common stock, no par value; authorized 150,000,000 shares, 111,587,048 and 111,392,053 issued at respective dates | 2,595,042 | 2,596,030
Treasury stock at cost; 29,195 and 55,317 shares at respective dates | (2,270) | (4,133)
Total common stock | 2,592,772 | 2,591,897
Retained earnings | 2,278,867 | 2,255,547
Accumulated other comprehensive loss: |  |
Pension and other postretirement benefits | (38,548) | (39,070)
Derivative instruments | (4,315) | (4,752)
Total accumulated other comprehensive loss | (42,863) | (43,822)
Total shareholders’ equity | 4,828,776 | 4,803,622
Noncontrolling interests (Note 5) | 137,164 | 132,290
Total equity | 4,965,940 | 4,935,912
TOTAL LIABILITIES AND EQUITY | 16,192,825 | 16,004,253
Arizona Public Service Company |  |
CURRENT ASSETS |  |
Cash and cash equivalents | 2,933 | 8,840
Customer and other receivables | 190,898 | 262,611
Accrued unbilled revenues | 101,226 | 107,949
Allowance for doubtful accounts | (1,946) | (3,037)
Materials and supplies (at average cost) | 251,360 | 252,777
Fossil fuel (at average cost) | 30,656 | 28,608
Income tax receivable | 11,195 | 11,174
Assets from risk management activities (Note 6) | 4,222 | 19,694
Deferred fuel and purchased power regulatory asset (Note 3) | 17,625 | 12,465
Other regulatory assets (Note 3) | 138,316 | 94,410
Other current assets | 43,040 | 41,849
Total current assets | 789,525 | 837,340
INVESTMENTS AND OTHER ASSETS |  |
Assets from risk management activities (Note 6) | 0 | 1
Nuclear decommissioning trust (Note 11) | 805,048 | 779,586
Other assets | 49,094 | 48,320
Total investments and other assets | 854,142 | 827,907
PROPERTY, PLANT AND EQUIPMENT |  |
Plant in service and held for future use | 17,324,182 | 17,228,787
Accumulated depreciation and amortization | (5,974,360) | (5,881,941)
Net | 11,349,822 | 11,346,846
Construction work in progress | 970,880 | 989,497
Palo Verde sale leaseback, net of accumulated depreciation (Note 5) | 112,548 | 113,515
Intangible assets, net of accumulated amortization | 251,045 | 89,868
Nuclear fuel, net of accumulated amortization | 135,821 | 119,004
Total property, plant and equipment | 12,820,116 | 12,658,730
DEFERRED DEBITS |  |
Regulatory assets (Note 3) | 1,321,473 | 1,313,428
Assets for other postretirement benefits (Note 4) | 172,071 | 162,911
Other | 130,327 | 130,859
Total deferred debits | 1,623,871 | 1,607,198
TOTAL ASSETS | 16,087,654 | 15,931,175
CURRENT LIABILITIES |  |
Accounts payable | 245,774 | 259,161
Accrued taxes | 178,393 | 130,576
Accrued interest | 48,349 | 52,525
Common dividends payable | 0 | 72,900
Short-term borrowings (Note 2) | 116,497 | 135,500
Customer deposits | 76,149 | 82,520
Liabilities from risk management activities (Note 6) | 41,932 | 25,836
Liabilities for asset retirements | 8,182 | 8,703
Regulatory liabilities (Note 3) | 101,208 | 99,899
Other current liabilities | 149,486 | 226,417
Total current liabilities | 965,970 | 1,094,037
DEFERRED CREDITS AND OTHER |  |
Deferred income taxes | 3,008,075 | 2,999,295
Regulatory liabilities (Note 3) | 948,293 | 948,916
Liabilities for asset retirements | 615,230 | 607,234
Liabilities for pension benefits (Note 4) | 449,222 | 488,253
Liabilities from risk management activities (Note 6) | 63,213 | 47,238
Customer advances | 92,113 | 88,672
Coal mine reclamation | 209,126 | 206,645
Deferred investment tax credit | 209,818 | 210,162
Unrecognized tax benefits | 37,534 | 37,408
Other | 148,118 | 143,560
Total deferred credits and other | 5,780,742 | 5,777,383
COMMITMENTS AND CONTINGENCIES (SEE NOTE 7) |  |
EQUITY |  |
Total common stock | 178,162 | 178,162
Additional paid-in capital | 2,421,696 | 2,421,696
Retained earnings | 2,354,405 | 2,331,245
Accumulated other comprehensive loss: |  |
Pension and other postretirement benefits | (20,060) | (20,671)
Derivative instruments | (4,315) | (4,752)
Total accumulated other comprehensive loss | (24,375) | (25,423)
Total shareholders’ equity | 4,929,888 | 4,905,680
Noncontrolling interests (Note 5) | 137,164 | 132,290
Total equity | 5,067,052 | 5,037,970
Long-term debt less current maturities (Note 2) | 4,273,890 | 4,021,785
Total capitalization | 9,340,942 | 9,059,755
TOTAL LIABILITIES AND EQUITY | $ 16,087,654 | $ 15,931,175

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- Definition Represents the caption on the face of the balance sheet to indicate that the entity has entered into (1) purchase or supply arrangements that will require expending a portion of its resources to meet the terms thereof, and (2) is exposed to potential losses or, less frequently, gains, arising from (a) possible claims against a company's resources due to future performance under contract terms, and (b) possible losses or likely gains from uncertainties that will ultimately be resolved when one or more future events that are deemed likely to occur do occur or fail to occur. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.(a),19) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.17) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.25) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Aggregate par or stated value of issued nonredeemable common stock (or common stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable common shares, par value and other disclosure concepts are in another section within stockholders' equity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Value of all classes of common stock held by shareholders. May be all or portion of the number of common shares authorized. These shares exclude common shares repurchased by the entity and held as treasury shares. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount of structure or a modification to a structure under construction. Includes recently completed structures or modifications to structures that have not been placed into service. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 + Details
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- Definition The fair value of investments held in a trust fund to pay for the costs of decontaminating and decommissioning facilities, whether such amount is presented as a separate caption or as a parenthetical disclosure on the balance sheet. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 + Details
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- Definition The amount for overfunded plans recognized in the balance sheet as a noncurrent asset associated with a defined benefit pension plan or other postretirement defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64852052&loc=d3e1703-114919 + Details
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- Definition Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled after one year or the normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=73719730&loc=d3e13433-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41271-113958 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=73719730&loc=d3e13495-108611 + Details
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- Definition Carrying value as of the balance sheet date of dividends declared but unpaid on equity securities issued by the entity and outstanding. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6935-107765 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.20) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Current Liabilities -URI http://asc.fasb.org/extlink&oid=6509677 + Details
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- Definition Amount of fossil fuel included in inventory classified as other. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.6(a)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Carrying amount due within one year of the balance sheet date (or one operating cycle, if longer) from tax authorities as of the balance sheet date representing refunds of overpayments or recoveries based on agreed-upon resolutions of disputes. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.5(c)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3(a)(4)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.10) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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- Definition Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph ((a)(1),(b)) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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