THE CONNECTICUT LIGHT AND POWER COMPANY STATEMENTS OF INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Operating Revenues	$ 11,910,705	$ 12,289,336	$ 9,863,085
Operating Expenses:
Purchased Power and Transmission	5,168,241	5,014,074	3,372,344
Operations and Maintenance	1,895,703	1,865,328	1,739,685
Depreciation	1,305,840	1,194,246	1,103,008
Energy Efficiency Programs	691,344	658,051	592,775
Taxes Other Than Income Taxes	940,359	910,591	829,987
Total Operating Expenses	9,511,370	10,091,182	7,869,764
Operating Income	2,399,335	2,198,154	1,993,321
Interest Expense	855,441	678,274	582,334
Other Income, Net	348,069	346,088	161,282
(Loss)/Income Before Income Tax Expense	(275,037)	1,865,968	1,572,269
Income Tax Expense	159,684	453,574	344,223
Net (Loss)/Income	(434,700)	1,412,400	1,228,000
The Connecticut Light and Power Company
Operating Revenues	4,578,804	4,817,744	3,637,412
Operating Expenses:
Purchased Power and Transmission	2,612,949	2,110,253	1,392,969
Operations and Maintenance	733,287	707,162	644,175
Depreciation	376,904	355,511	338,915
Amortization of Regulatory (Liabilities)/Assets, Net	(500,367)	335,636	99,009
Energy Efficiency Programs	133,453	134,222	129,564
Taxes Other Than Income Taxes	401,135	384,746	363,862
Total Operating Expenses	3,757,361	4,027,530	2,968,494
Operating Income	821,443	790,214	668,918
Interest Expense	193,361	169,348	166,107
Other Income, Net	61,560	83,252	30,187
(Loss)/Income Before Income Tax Expense	689,642	704,118	532,998
Income Tax Expense	170,909	171,198	131,273
Net (Loss)/Income	$ 518,733	$ 532,920	$ 401,725