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SCHEDULE I - FINANCIAL INFORMATION OF REGISTRANT - STATEMENT OF CASH FLOW (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Operating Activities: |  |  |
Net (Loss)/Income | $ (434,700) | $ 1,412,400 | $ 1,228,000
Adjustments to Reconcile Net Income to Net Cash Flows Provided by Operating Activities: |  |  |
Equity in Losses/(Earnings) of Subsidiaries | (15,500) | (22,900) | (14,200)
Deferred Income Taxes | 85,405 | 346,779 | 347,056
Other | (53,026) | (39,192) | (64,640)
Receivables and Unbilled Revenues, Net | (124,393) | (470,593) | (135,505)
Taxes Receivable/Accrued, Net | 36,357 | 18,358 | (110,621)
Other Current Assets and Liabilities, Net | (66,202) | (45,583) | 3,710
Net Cash Flows Provided by Operating Activities | 1,646,161 | 2,401,293 | 1,962,600
Investing Activities: |  |  |
Other Investing Activities | (2,897) | 20,420 | 22,178
Net Cash Flows Used in Investing Activities | (4,870,732) | (4,130,490) | (3,447,374)
Financing Activities: |  |  |
Issuance of Common Shares, Net of Issuance Costs | 0 | 197,058 | 0
Cash Dividends on Common Shares | (918,995) | (860,033) | (805,439)
Issuance of Long-Term Debt | 5,198,345 | 4,045,000 | 3,230,000
Retirement of Long-Term Debt | (2,008,470) | (1,175,000) | (1,142,500)
Other Financing Activities | (46,466) | (48,185) | (46,625)
Net Cash Flows Provided by Financing Activities | 2,869,237 | 2,029,941 | 1,440,832
Net (Decrease)/Increase in Cash, Cash Equivalents and Restricted Cash | (355,334) | 300,744 | (43,942)
Cash, Cash Equivalents and Restricted Cash - Beginning of Year | 521,752 | 221,008 | 264,950
Cash, Cash Equivalents and Restricted Cash - End of Year | 166,418 | 521,752 | 221,008
Cash Paid/(Received) During the Year for: |  |  |
Interest | 783,200 | 636,200 | 568,700
Income Taxes | 39,200 | 77,900 | 121,600
Eversource |  |  |
Operating Activities: |  |  |
Net (Loss)/Income | (442,240) | 1,404,875 | 1,220,527
Adjustments to Reconcile Net Income to Net Cash Flows Provided by Operating Activities: |  |  |
Equity in Losses/(Earnings) of Subsidiaries | 312,040 | (1,565,474) | (1,345,199)
Cash Dividends Received from Subsidiaries | 1,027,400 | 855,600 | 1,037,100
Deferred Income Taxes | (22,256) | 25,823 | 20,293
Other | (12,834) | 26,455 | 36,910
Receivables and Unbilled Revenues, Net | (6,853) | (9,935) | (3,758)
Taxes Receivable/Accrued, Net | (80,968) | (21,627) | (19,455)
Accounts Payable to Subsidiaries | 4,521 | (4,079) | 19,185
Other Current Assets and Liabilities, Net | 35,357 | 35,090 | 8,144
Net Cash Flows Provided by Operating Activities | 814,167 | 746,728 | 973,747
Investing Activities: |  |  |
Capital Contributions to Subsidiaries | (1,369,700) | (1,499,300) | (1,033,000)
Return of Capital from Subsidiaries | 438,000 | 12,000 | 178,800
Increase in Notes Receivable from Subsidiaries | (1,578,100) | (724,400) | (140,200)
Other Investing Activities | 147,567 | (1,289) | (3,196)
Net Cash Flows Used in Investing Activities | (2,362,233) | (2,212,989) | (997,596)
Financing Activities: |  |  |
Issuance of Common Shares, Net of Issuance Costs | 0 | 197,058 | 0
Cash Dividends on Common Shares | (918,995) | (860,033) | (805,439)
Issuance of Long-Term Debt | 3,350,000 | 2,800,000 | 1,000,000
Retirement of Long-Term Debt | (1,200,000) | (750,000) | (450,000)
Increase (Decrease) in Notes Payable to Eversource Parent | 329,705 | 99,250 | 288,625
Other Financing Activities | (13,076) | (19,193) | (9,545)
Net Cash Flows Provided by Financing Activities | 1,547,634 | 1,467,082 | 23,641
Net (Decrease)/Increase in Cash, Cash Equivalents and Restricted Cash | (432) | 821 | (208)
Cash, Cash Equivalents and Restricted Cash - Beginning of Year | 1,047 | 226 | 434
Cash, Cash Equivalents and Restricted Cash - End of Year | 615 | 1,047 | 226
Cash Paid/(Received) During the Year for: |  |  |
Interest | 366,645 | 215,053 | 164,568
Income Taxes | $ 23,984 | $ (20,992) | $ (51,277)

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