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LONG-TERM DEBT - Schedule of Long-term Debt Maturities (Details) $ in Millions | Dec. 31, 2021 USD ($)
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Debt Instrument [Line Items] |
2022 | $ 1,175.4
2023 | 2,008.4
2024 | 1,050.1
2025 | 1,400.2
2026 | 940.2
Thereafter | 11,630.0
Total | 18,204.3
The Connecticut Light and Power Company |
Debt Instrument [Line Items] |
2022 | 0.0
2023 | 400.0
2024 | 139.8
2025 | 400.0
2026 | 0.0
Thereafter | 3,280.0
Total | 4,219.8
NSTAR Electric Company |
Debt Instrument [Line Items] |
2022 | 400.0
2023 | 80.0
2024 | 0.0
2025 | 250.0
2026 | 300.0
Thereafter | 2,990.0
Total | 4,020.0
Public Service Company of New Hampshire |
Debt Instrument [Line Items] |
2022 | 0.0
2023 | 325.0
2024 | 0.0
2025 | 0.0
2026 | 0.0
Thereafter | 850.0
Total | $ 1,175.0

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- Definition Amount of long-term debt maturities at the date of the latest balance sheet presented in the financial statements, which may include maturities of long-term debt, sinking fund requirements, and other securities redeemable at fixed of determinable prices and dates. + References No definition available. + Details
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