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Subsequent Event	3 Months Ended
	Dec. 31, 2012
Subsequent Events [Abstract]
Subsequent Event	Subsequent Event Bond Redemption                 On January 15, 2013, TVA redeemed all of its 2008 5.00 percent electronotes® due December 15, 2028, CUSIP number 88059TEK3.  The notes were redeemed at 100 percent of par value for a total of $17 million.

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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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