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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands | 9 Months Ended
--- | ---
Sep. 30, 2018 | Sep. 30, 2017
CASH FLOWS FROM OPERATING ACTIVITIES |  |
NET INCOME | $ 499,591 | $ 481,447
Adjustments to reconcile net income to net cash provided by operating activities: |  |
Depreciation and amortization including nuclear fuel | 489,861 | 445,707
Deferred fuel and purchased power | (82,486) | (43,348)
Deferred fuel and purchased power amortization | 92,397 | (18,153)
Allowance for equity funds used during construction | (39,411) | (32,666)
Deferred income taxes | 117,571 | 211,249
Deferred investment tax credit | (7,397) | (4,293)
Change in derivative instruments fair value | 0 | (254)
Stock compensation | 16,140 | 16,553
Changes in current assets and liabilities: |  |
Customer and other receivables | (65,203) | (206,920)
Accrued unbilled revenues | (83,939) | (44,027)
Materials, supplies and fossil fuel | (20,591) | (1,881)
Income tax receivable | 0 | 3,751
Other current assets | 23,661 | (22,043)
Accounts payable | (11,399) | (24,258)
Accrued taxes | 78,624 | 89,827
Other current liabilities | 12,852 | 3,936
Change in margin and collateral accounts — assets | (588) | (1,826)
Change in margin and collateral accounts — liabilities | (982) | (1,625)
Change in unrecognized tax benefits | (1,235) | 5,891
Change in other long-term assets | 14,708 | (59,963)
Change in other long-term liabilities | (72,411) | (25,180)
Net cash flow provided by operating activities | 959,763 | 771,924
CASH FLOWS FROM INVESTING ACTIVITIES |  |
Capital expenditures | (898,455) | (1,027,753)
Contributions in aid of construction | 22,611 | 24,924
Allowance for borrowed funds used during construction | (18,959) | (15,378)
Proceeds from nuclear decommissioning trust sales and other special use funds | 443,215 | 351,860
Investment in nuclear decommissioning trust and other special use funds | (461,777) | (353,001)
Other | 49 | (20,291)
Net cash flow used for investing activities | (913,316) | (1,039,639)
CASH FLOWS FROM FINANCING ACTIVITIES |  |
Issuance of long-term debt | 295,245 | 549,478
Short-term borrowing and payments — net | 19,800 | (68,800)
Short-term debt borrowings under revolving credit facility | 45,000 | 23,000
Short-term debt repayments under revolving credit facility | (32,000) | 0
Repayment of long-term debt | (82,000) | 0
Dividends paid on common stock | (228,037) | (213,927)
Common stock equity issuance - net of purchases | (1,984) | (8,870)
Distributions to noncontrolling interests | (11,372) | (11,372)
Other | 0 | (1)
Net cash flow provided by financing activities | 4,652 | 269,508
NET INCREASE IN CASH AND CASH EQUIVALENTS | 51,099 | 1,793
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD | 13,892 | 8,881
CASH AND CASH EQUIVALENTS AT END OF PERIOD | 64,991 | 10,674
Supplemental disclosure of cash flow information |  |
Income taxes, net of refunds | 10,091 | 2,185
Interest, net of amounts capitalized | 161,875 | 147,149
Significant non-cash investing and financing activities: |  |
Accrued capital expenditures | 99,405 | 93,031
APS |  |
CASH FLOWS FROM OPERATING ACTIVITIES |  |
NET INCOME | 540,409 | 491,143
Adjustments to reconcile net income to net cash provided by operating activities: |  |
Depreciation and amortization including nuclear fuel | 488,223 | 444,439
Deferred fuel and purchased power | (82,486) | (43,348)
Deferred fuel and purchased power amortization | 92,397 | (18,153)
Allowance for equity funds used during construction | (39,411) | (32,666)
Deferred income taxes | 86,319 | 202,256
Deferred investment tax credit | (7,397) | (4,293)
Change in derivative instruments fair value | 0 | (254)
Changes in current assets and liabilities: |  |
Customer and other receivables | (56,874) | (185,130)
Accrued unbilled revenues | (83,939) | (44,027)
Materials, supplies and fossil fuel | (20,694) | (1,755)
Income tax receivable | 0 | 11,174
Other current assets | 20,258 | (19,100)
Accounts payable | (8,857) | (29,784)
Accrued taxes | 106,172 | 102,638
Other current liabilities | 9,289 | 11,747
Change in margin and collateral accounts — assets | (588) | (1,826)
Change in margin and collateral accounts — liabilities | (982) | (1,625)
Change in unrecognized tax benefits | (1,235) | 5,891
Change in other long-term assets | 25,993 | (56,375)
Change in other long-term liabilities | (78,678) | (26,049)
Net cash flow provided by operating activities | 987,919 | 804,903
CASH FLOWS FROM INVESTING ACTIVITIES |  |
Capital expenditures | (889,347) | (1,008,723)
Contributions in aid of construction | 22,611 | 24,924
Allowance for borrowed funds used during construction | (18,959) | (15,378)
Proceeds from nuclear decommissioning trust sales and other special use funds | 443,040 | 351,860
Investment in nuclear decommissioning trust and other special use funds | (461,602) | (353,001)
Other | (1,261) | (18,098)
Net cash flow used for investing activities | (905,518) | (1,018,416)
CASH FLOWS FROM FINANCING ACTIVITIES |  |
Issuance of long-term debt | 295,245 | 549,478
Short-term borrowing and payments — net | 0 | (103,700)
Short-term debt borrowings under revolving credit facility | 25,000 | 0
Short-term debt repayments under revolving credit facility | (25,000) | 0
Repayment of long-term debt | (82,000) | 0
Dividends paid on common stock | (233,300) | (219,100)
Distributions to noncontrolling interests | (11,372) | (11,372)
Net cash flow provided by financing activities | (31,427) | 215,306
NET INCREASE IN CASH AND CASH EQUIVALENTS | 50,974 | 1,793
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD | 13,851 | 8,840
CASH AND CASH EQUIVALENTS AT END OF PERIOD | 64,825 | 10,633
Supplemental disclosure of cash flow information |  |
Income taxes, net of refunds | 24,746 | 132
Interest, net of amounts capitalized | 154,788 | 142,779
Significant non-cash investing and financing activities: |  |
Accrued capital expenditures | $ 99,405 | $ 94,769

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- Definition Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3536-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3521-108585 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585 + Details
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- Definition Amount of cash (inflow) outflow from investing activities classified as other. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04(a)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3213-108585 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3179-108585 + Details
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- Definition Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3291-108585 + Details
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- Definition The cash outflow for purchases of and capital improvements on property, plant and equipment (capital expenditures), software, and other intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3213-108585 + Details
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- Definition Amount of cash outflow to a noncontrolling interest. Includes, but not limited to, reduction of noncontrolling interest ownership. Excludes dividends paid to the noncontrolling interest. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3291-108585 + Details
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- Definition The cash inflow from developers, builders, governmental agencies and municipalities that provide the entity with cash to extend its construction services to their properties. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3179-108585 + Details
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- Definition The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3255-108585 + Details
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- Definition Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3255-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(f)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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- Definition Amount of cash inflow (outflow) from financing activities classified as other. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04(a)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3255-108585 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3291-108585 + Details
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- Definition The net cash inflow or outflow for borrowing having initial term of repayment within one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04(a)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690 + Details
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- Definition The net cash inflow or outflow resulting from the entity's share transaction. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04(a)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690 + Details
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- Definition The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=114867106&loc=SL7669619-108580 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=109239629&loc=SL4573702-111684 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1B -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=114867106&loc=SL7669625-108580 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=109239629&loc=SL4573702-111684 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 Reference 6: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4J -URI http://asc.fasb.org/extlink&oid=84234705&loc=SL4591551-111686 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3000-108585 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=108774443&loc=SL4569616-111683 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8933-108599 Reference 10: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4K -URI http://asc.fasb.org/extlink&oid=84234705&loc=SL4591552-111686 + Details
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- Definition The component of the allowance for funds used during construction during the period based on an assumed rate of return on equity funds used in financing the construction of regulated assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 835 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6501662&loc=d3e56162-110433 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 835 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6501569&loc=d3e55921-110430 + Details
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- Definition Amount of cash outflow for payment of an obligation from a lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3291-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(f)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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- Definition The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3291-108585 + Details
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