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THE CONNECTICUT LIGHT AND POWER COMPANY CONDENSED STATEMENTS OF COMPREHENSIVE INCOME - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Net Income $ 341,543 $ 351,289    
Other Comprehensive (Loss)/Income, Net of Tax:        
Comprehensive Income Attributable to Common Shareholders 347,744 351,267 $ 861,644 $ 1,085,986
The Connecticut Light and Power Company        
Net Income 119,388 143,287 401,104 422,102
Other Comprehensive (Loss)/Income, Net of Tax:        
Qualified Cash Flow Hedging Instruments (7) (7) (21) (20)
Changes in Unrealized (Losses)/Gains on Marketable Securities 0 (23) 43 (68)
Other Comprehensive (Loss)/Income, Net of Tax (7) (30) 22 (88)
Comprehensive Income Attributable to Common Shareholders $ 119,381 $ 143,257 $ 401,126 $ 422,014