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Consolidated Statement of Cash Flows - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
OPERATING ACTIVITIES |  |  |
Net Income | $ 1,144 | $ 1,440 | $ 1,382
Net income | 1,101 | 1,343 | 1,382
PRINCIPAL NON-CASH CHARGES/(CREDITS) TO INCOME |  |  |
Depreciation and amortization | 1,920 | 1,684 | 1,438
Impairment of assets | 320 | 0 | 0
Deferred income taxes | 85 | 308 | 408
Rate case amortization and accruals | (40) | (116) | (117)
Common equity component of allowance for funds used during construction | (17) | (14) | (12)
Net derivative (gains)/losses | 57 | 27 | 8
(Gain) on Sale of Assets | 0 | (14) | 0
Unbilled revenue and net unbilled revenue deferrals | (1) | (3) | 18
(Gain) on existing project interests due to acquisition of Sempra Solar Holdings, LLC | 0 | 0 | (131)
Other non-cash items, net | 127 | (18) | 115
CHANGES IN ASSETS AND LIABILITIES |  |  |
Accounts receivable - customers | (543) | 23 | (140)
Materials and supplies, including fuel oil and gas in storage | (4) | 6 | (20)
Revenue decoupling mechanism receivable | (61) | (76) | 0
Other receivables and other current assets | (134) | 54 | (62)
Taxes receivable | (6) | 29 | 27
Prepayments | (11) | (73) | (7)
Accounts payable | 170 | 10 | (46)
Pensions and retiree benefits obligations, net | 285 | 357 | 325
Pensions and retiree benefits contributions | (478) | (357) | (479)
Accrued taxes | 74 | 10 | (49)
Accrued interest | (4) | 24 | (35)
Superfund and environmental remediation costs, net | (22) | (9) | (19)
Distributions from equity investments | 39 | 57 | 107
System benefit charge | (119) | 20 | 92
Deferred charges, noncurrent assets and other regulatory assets | (653) | (492) | (393)
Deferred credits and other regulatory liabilities | 10 | 278 | 436
Other current and noncurrent liabilities | 60 | (21) | (151)
NET CASH FLOWS FROM OPERATING ACTIVITIES | 2,198 | 3,134 | 2,695
INVESTING ACTIVITIES |  |  |
Utility construction expenditures | (3,326) | (3,238) | (3,251)
Cost of removal less salvage | (310) | (295) | (258)
Non-utility construction expenditures | (583) | (248) | (246)
Acquisition of Sempra Solar Holdings, LLC, net of cash acquired | 0 | 0 | (1,488)
Proceeds from sale of assets | 0 | 192 | 5
Other investing activities | 22 | 22 | 34
NET CASH FLOWS USED IN INVESTING ACTIVITIES | (4,224) | (3,782) | (5,471)
FINANCING ACTIVITIES |  |  |
Net (payment)/issuance of short-term debt | 178 | (874) | 1,989
Issuance of long-term debt | 2,925 | 3,017 | 3,030
Retirement of long-term debt | (518) | (1,195) | (1,938)
Debt issuance costs | (47) | (32) | (61)
Common stock dividends | (975) | (924) | (842)
Issuance of common shares - public offering | 640 | 825 | 705
Issuance of common shares for stock plans | 58 | 54 | 53
Distribution to noncontrolling interest | (16) | (12) | 2
NET CASH FLOWS FROM FINANCING ACTIVITIES | 2,245 | 859 | 2,938
CASH, TEMPORARY CASH INVESTMENTS AND RESTRICTED CASH: |  |  |
NET CHANGE FOR THE PERIOD | 219 | 211 | 162
BALANCE AT BEGINNING OF PERIOD | 1,217 | 1,006 | 844
BALANCE AT END OF PERIOD | 1,436 | 1,217 | 1,006
Cash paid/(received) during the period for: |  |  |
Interest | 920 | 876 | 805
Income taxes | 38 | (26) | 0
SUPPLEMENTAL DISCLOSURE OF NON-CASH INFORMATION |  |  |
Construction expenditures in accounts payable | 478 | 336 | 369
Issuance of common shares for dividend reinvestment | 48 | 47 | 47
Debt assumed with business acquisitions | 0 | 0 | 568
Electric and Gas Transmission Projects |  |  |
INVESTING ACTIVITIES |  |  |
Investments in/acquisitions of projects | (3) | (205) | (248)
Renewable Electric Production Projects |  |  |
INVESTING ACTIVITIES |  |  |
Investments in/acquisitions of projects | (24) | (10) | (19)
CECONY |  |  |
OPERATING ACTIVITIES |  |  |
Net income | 1,185 | 1,250 | 1,196
PRINCIPAL NON-CASH CHARGES/(CREDITS) TO INCOME |  |  |
Depreciation and amortization | 1,598 | 1,373 | 1,276
Deferred income taxes | 168 | 128 | 354
Rate case amortization and accruals | (40) | (117) | (133)
Common equity component of allowance for funds used during construction | (14) | (12) | (11)
(Gain) on Sale of Assets | 0 | (14) | 0
Unbilled revenue and net unbilled revenue deferrals | (47) | (3) | (4)
Other non-cash items, net | 66 | 7 | 13
CHANGES IN ASSETS AND LIABILITIES |  |  |
Accounts receivable - customers | (516) | 3 | (153)
Materials and supplies, including fuel oil and gas in storage | 2 | 11 | (17)
Revenue decoupling mechanism receivable | (53) | (76) | 0
Other receivables and other current assets | (49) | 54 | (96)
Accounts receivables from affiliated companies | (61) | 141 | (150)
Prepayments | 19 | (61) | (9)
Accounts payable | 145 | (7) | (27)
Accounts payable to affiliated companies | 9 | (4) | 7
Pensions and retiree benefits obligations, net | 253 | 330 | 293
Pensions and retiree benefits contributions | (438) | (325) | (440)
Accrued taxes | 61 | 11 | (47)
Accrued taxes to affiliated companies | 1 | 0 | (72)
Accrued interest | 13 | 1 | (1)
Superfund and environmental remediation costs, net | (30) | (12) | (18)
System benefit charge | (112) | 18 | 86
Deferred charges, noncurrent assets and other regulatory assets | (603) | (486) | (314)
Deferred credits and other regulatory liabilities | 92 | 306 | 549
Other current and noncurrent liabilities | 44 | (14) | (78)
NET CASH FLOWS FROM OPERATING ACTIVITIES | 1,693 | 2,502 | 2,204
INVESTING ACTIVITIES |  |  |
Utility construction expenditures | (3,112) | (3,028) | (3,051)
Cost of removal less salvage | (304) | (288) | (255)
Proceeds from sale of assets | 0 | 192 | 0
NET CASH FLOWS USED IN INVESTING ACTIVITIES | (3,416) | (3,124) | (3,306)
FINANCING ACTIVITIES |  |  |
Net (payment)/issuance of short-term debt | 523 | (55) | 1,042
Issuance of long-term debt | 2,200 | 1,300 | 2,740
Retirement of long-term debt | (350) | (475) | (1,836)
Debt issuance costs | (34) | (21) | (30)
Capital contribution by parent | 500 | 900 | 120
Dividend to parent | (982) | (912) | (846)
NET CASH FLOWS FROM FINANCING ACTIVITIES | 1,857 | 737 | 1,190
CASH, TEMPORARY CASH INVESTMENTS AND RESTRICTED CASH: |  |  |
NET CHANGE FOR THE PERIOD | 134 | 115 | 88
BALANCE AT BEGINNING OF PERIOD | 933 | 818 | 730
BALANCE AT END OF PERIOD | 1,067 | 933 | 818
Cash paid/(received) during the period for: |  |  |
Interest | 693 | 676 | 662
Income taxes | 102 | 73 | 195
SUPPLEMENTAL DISCLOSURE OF NON-CASH INFORMATION |  |  |
Construction expenditures in accounts payable | 417 | 285 | 299
Software Licenses |  |  |
SUPPLEMENTAL DISCLOSURE OF NON-CASH INFORMATION |  |  |
Capital expenditures incurred but unpaid as of end of period | 51 | 80 | 100
Software Licenses | CECONY |  |  |
SUPPLEMENTAL DISCLOSURE OF NON-CASH INFORMATION |  |  |
Capital expenditures incurred but unpaid as of end of period | 48 | 76 | 95
Equipment |  |  |
SUPPLEMENTAL DISCLOSURE OF NON-CASH INFORMATION |  |  |
Capital expenditures incurred but unpaid as of end of period | 28 | 33 | 0
Equipment | CECONY |  |  |
SUPPLEMENTAL DISCLOSURE OF NON-CASH INFORMATION |  |  |
Capital expenditures incurred but unpaid as of end of period | $ 28 | $ 33 | $ 0

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- Definition The increase (decrease) during the reporting period in amount due within one year (or one business cycle) from customers for the credit sale of goods and services. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 + Details
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