The changes in accumulated other comprehensive income/(loss) by component, net of tax, are as follows: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For the Three Months Ended March 31, 2021 | | For the Three Months Ended March 31, 2020 | Eversource (Millions of Dollars) | Qualified
Cash Flow
Hedging
Instruments | | Unrealized
Gains/(Losses) on Marketable
Securities | | Defined
Benefit Plans | | Total | | Qualified
Cash Flow
Hedging
Instruments | | Unrealized
Gains on Marketable
Securities | | Defined
Benefit Plans | | Total | Balance as of January 1st | $ | (1.4) | | | $ | 1.1 | | | $ | (76.1) | | | $ | (76.4) | | | $ | (3.0) | | | $ | 0.7 | | | $ | (62.8) | | | $ | (65.1) | | | | | | | | | | | | | | | | | | OCI Before Reclassifications | — | | | (0.7) | | | — | | | (0.7) | | | — | | | 0.2 | | | — | | | 0.2 | | Amounts Reclassified from AOCI | 0.4 | | | — | | | 1.5 | | | 1.9 | | | 0.2 | | | — | | | 1.6 | | | 1.8 | | | Net OCI | 0.4 | | | (0.7) | | | 1.5 | | | 1.2 | | | 0.2 | | | 0.2 | | | 1.6 | | | 2.0 | | | Balance as of March 31st | $ | (1.0) | | | $ | 0.4 | | | $ | (74.6) | | | $ | (75.2) | | | $ | (2.8) | | | $ | 0.9 | | | $ | (61.2) | | | $ | (63.1) | |
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