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Share-based Compensation Arrangement by Share-based Payment Award, Award Subjective Performance Period

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Share Based Compensation Arrangement by Share Based Payment Award, Number of Types of Awards

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- Definition

Unrecognized cost of unvested share-based compensation awards.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Disclosure of the aggregate tax benefit realized from the exercise of stock options and the conversion of similar instruments during the annual period.

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-Publisher FASB

-Name Accounting Standards Codification

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The noncash expense that represents the cost of restricted stock or unit distributed to employees as compensation.

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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Discount rate from fair value on offering date that participants pay for shares.

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

The highest percentage of annual salary that an employee is permitted to utilize with respect to the plan.

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The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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Maximum number of shares that may be issued in accordance with the plan as a proportion of outstanding capital stock.

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The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

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The remaining number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

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Employee Stock-based Compensation Plans - Additional Information (Detail) (USD $)	0 Months Ended	12 Months Ended			1 Months Ended
	Mar. 01, 2013 Award	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Jan. 31, 2013	Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized to be issued under the Teradata SIP		16,400,000
Weighted-average fair value of options granted for Teradata equity awards		$ 17.67	$ 18.02	$ 22.31
Tax benefit realized from stock options exercises		$ 5,000,000	$ 6,000,000	$ 38,000,000
Restricted stock unit awards granted		1,447,000
Number of types of market based performance awards	2
Performance based restricted units percentage of total units allocated	70.00%
Weighted-average fair value of restricted stock units granted (in usd per share)		$ 44.39
Compensation expense for restricted stock awards		33,000,000us-gaap_RestrictedStockExpense	32,000,000us-gaap_RestrictedStockExpense	28,000,000us-gaap_RestrictedStockExpense
Long-Term Strategic PBRSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance based restricted units percentage of total units allocated	30.00%
Employee Stock Purchase Program
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee stock purchase program discount from average market price				5.00%	15.00%
Percentage of authorized payroll deductions for common stock purchases by employees		10.00%	10.00%	10.00%		10.00%
Shares authorized to be issued under the Employee Stock Purchase Program		4,000,000
Remaining shares authorized to be issued under the Employee Stock Purchase Program		1,900,000
Long-Term Strategic PBRSU
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense for restricted stock awards		0
Special 2016 PSRSU
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Subjective Performance Period		4 years
Compensation expense for restricted stock awards		0
Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate within the contractual life of the option		The risk-free interest rate for periods within the contractual life of the option is based on an average of the five-year and seven-year
Total unrecognized compensation cost related to unvested stock grants		37,000,000
Cost expected to be recognized over a weighted-average period (in years)		3 years 1 month 6 days
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized compensation cost related to unvested stock grants		87,000,000
Cost expected to be recognized over a weighted-average period (in years)		2 years 4 months 24 days
Restricted Stock Units With Market Based Performance Criteria
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock unit awards granted						300,000
Weighted-average fair value of restricted stock units granted (in usd per share)		$ 26.78
Compensation expense for restricted stock awards			$ 0
Service-Based Awards \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)		3 years
Service-Based Awards \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)		4 years
Performance Based Awards \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)		1 year
Performance Based Awards \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)		4 years
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock option, term		10 years
Vesting period (in years)		4 years