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Subsequent Events	9 Months Ended
	Sep. 30, 2015
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events In November 2015, the Company committed to a plan to exit the majority of the Marketing Applications business. The Company determined that it was in the long-term best interests of the Company and its shareholders to realign Teradata’s business by focusing on the Company’s core Data and Analytics business.

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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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