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Subsequent Events	3 Months Ended
	Mar. 31, 2015
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events On May 4, 2015, the Company’s Board of Directors authorized an additional $300 million to be utilized to repurchase Teradata Corporation common stock under the Company’s general open market share repurchase program, which resulted in a total of approximately $431 million authorized for share repurchases under this program as of that date.

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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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