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Schedule I - Condensed Financial Information - Cash Flows (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Condensed Cash Flow Statements, Captions [Line Items] |  |  |
Net Income | $ 1,346 | $ 1,101 | $ 1,343
Change in Assets: |  |  |
Taxes receivable | 13 | (6) | 29
Other – net (b) | (103) | (134) | 54
NET CASH FLOWS FROM OPERATING ACTIVITIES | 2,733 | 2,198 | 3,134
INVESTING ACTIVITIES |  |  |
NET CASH FLOWS USED IN INVESTING ACTIVITIES | (3,484) | (4,224) | (3,782)
FINANCING ACTIVITIES |  |  |
Net proceeds of short-term debt | (382) | 178 | (874)
Issuance of long-term debt | 2,804 | 2,925 | 3,017
Retirement of long-term debt | (1,960) | (518) | (1,195)
Debt issuance costs | (40) | (47) | (32)
Issuance of common shares for stock plans | 60 | 58 | 54
Issuance of common shares - public offering | 775 | 640 | 825
Common stock dividends | (1,030) | (975) | (924)
NET CASH FLOWS FROM FINANCING ACTIVITIES | 461 | 2,245 | 859
NET CHANGE FOR THE PERIOD | (290) | 219 | 211
BALANCE AT BEGINNING OF PERIOD | 1,436 | 1,217 | 1,006
BALANCE AT END OF PERIOD | 1,146 | 1,436 | 1,217
CECONY |  |  |
Condensed Cash Flow Statements, Captions [Line Items] |  |  |
Net Income | 1,344 | 1,185 | 1,250
Change in Assets: |  |  |
Other – net (b) | (85) | (49) | 54
NET CASH FLOWS FROM OPERATING ACTIVITIES | 2,186 | 1,693 | 2,502
INVESTING ACTIVITIES |  |  |
NET CASH FLOWS USED IN INVESTING ACTIVITIES | (3,729) | (3,416) | (3,124)
FINANCING ACTIVITIES |  |  |
Net proceeds of short-term debt | (299) | 523 | (55)
Issuance of long-term debt | 2,250 | 2,200 | 1,300
Retirement of long-term debt | (640) | (350) | (475)
Debt issuance costs | (27) | (34) | (21)
NET CASH FLOWS FROM FINANCING ACTIVITIES | 1,396 | 1,857 | 737
NET CHANGE FOR THE PERIOD | (147) | 134 | 115
BALANCE AT BEGINNING OF PERIOD | 1,067 | 933 | 818
BALANCE AT END OF PERIOD | 920 | 1,067 | 933
Parent Company |  |  |
Condensed Cash Flow Statements, Captions [Line Items] |  |  |
Net Income | 1,346 | 1,101 | 1,343
Equity in earnings of subsidiaries | (1,369) | (1,105) | (1,354)
Change in Assets: |  |  |
Special deposits | 0 | 0 | (3)
Taxes receivable | 15 |  | 25
Other – net (b) | 211 | (521) | 44
NET CASH FLOWS FROM OPERATING ACTIVITIES | 1,459 | 538 | 1,029
INVESTING ACTIVITIES |  |  |
Contributions to subsidiaries | (1,135) | (626) | (930)
Debt receivable from affiliated companies | 875 | 400 | 450
NET CASH FLOWS USED IN INVESTING ACTIVITIES | (260) | (226) | (480)
FINANCING ACTIVITIES |  |  |
Net proceeds of short-term debt | 50 | (537) | (783)
Issuance of long-term debt | 0 | 650 | 825
Retirement of long-term debt | (1,178) | (3) | (553)
Debt issuance costs | (1) | (3) | 0
Issuance of common shares for stock plans | 60 | 58 | 54
Issuance of common shares - public offering | 775 | 640 | 825
Common stock dividends | (1,030) | (975) | (924)
NET CASH FLOWS FROM FINANCING ACTIVITIES | (1,324) | (170) | (556)
NET CHANGE FOR THE PERIOD | (125) | 142 | (7)
BALANCE AT BEGINNING OF PERIOD | 144 | 2 | 9
BALANCE AT END OF PERIOD | 19 | 144 | 2
Parent Company | Revision of Prior Period, Adjustment |  |  |
FINANCING ACTIVITIES |  |  |
Retirement of long-term debt | (1,175) |  |
Parent Company | CECONY |  |  |
Condensed Cash Flow Statements, Captions [Line Items] |  |  |
Dividends received | 988 | 982 | 912
Parent Company | O&R |  |  |
Condensed Cash Flow Statements, Captions [Line Items] |  |  |
Dividends received | 52 | 49 | 47
Parent Company | Clean Energy Businesses |  |  |
Condensed Cash Flow Statements, Captions [Line Items] |  |  |
Dividends received | 64 | 21 | 3
Parent Company | Con Edison Transmission |  |  |
Condensed Cash Flow Statements, Captions [Line Items] |  |  |
Dividends received | $ 152 | $ 11 | $ 12

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- Definition Dividends received on equity and other investments during the current period. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 16 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3337-108585 + Details
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- Definition Amount of cash inflow from issuance of shares under share-based payment arrangement. Includes, but is not limited to, option exercised. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120381028&loc=SL79508275-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3255-108585 + Details
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