XML 77 R56.htm IDEA: XBRL DOCUMENT
v3.25.1

ACCUMULATED OTHER COMPREHENSIVE INCOME/(LOSS) (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2025
Equity [Abstract] |
Changes in Accumulated Other Comprehensive Income/(Loss) by Component, Net of Tax | The changes in accumulated other comprehensive income/(loss) by component, net of tax, are as follows:
| For the Three Months Ended March 31, 2025 |  | For the Three Months Ended March 31, 2024
Eversource (Millions of Dollars) | Qualified Cash Flow Hedging Instruments |  | Defined Benefit Plans |  | Total |  | Qualified Cash Flow Hedging Instruments |  |  |  | Defined Benefit Plans |  | Total
Balance as of Beginning of Period | $ | (0.4) |  |  | $ | (26.1) |  |  | $ | (26.5) |  |  | $ | (0.4) |  |  |  |  | $ | (33.3) |  |  | $ | (33.7) |
Amounts Reclassified from AOCI | — |  |  | 2.5 |  |  | 2.5 |  |  | — |  |  |  |  | 5.2 |  |  | 5.2 |
Net OCI | — |  |  | 2.5 |  |  | 2.5 |  |  | — |  |  |  |  | 5.2 |  |  | 5.2 |
Balance as of End of Period | $ | (0.4) |  |  | $ | (23.6) |  |  | $ | (24.0) |  |  | $ | (0.4) |  |  |  |  | $ | (28.1) |  |  | $ | (28.5) |

X
- References No definition available. + Details
Name: | us-gaap_EquityAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -Publisher FASB -URI https://asc.fasb.org/1943274/2147482790/220-10-45-14A Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 830 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481674/830-30-50-1 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 830 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 20 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481694/830-30-45-20 + Details
Name: | us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration