SUBSEQUENT EVENTS	9 Months Ended
Sep. 30, 2012
Notes To Consolidated Financial Statements [Abstract]
Subsequent Events [Text Block]	17. SUBSEQUENT EVENTS See Note 8, "Long-Term Debt," to the unaudited condensed consolidated financial statements for information regarding October 2012 long-term debt redemptions and issuances. On October 29, 2012, Hurricane Sandy caused extensive damage to NU's electric distribution system across all three states. For further information on Hurricane Sandy's impact on NU, see Note 3, "Regulatory Accounting," to the unaudited condensed consolidated financial statements.

The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

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