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Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

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-Name Accounting Standards Codification

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-Section 45

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+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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Summary of Significant Accounting Policies (Property and Equipment) (Details) (USD $)	3 Months Ended		12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Significant Accounting Policies [Line Items]
Asset impairment	$ 3,800,000us-gaap_AssetImpairmentCharges	$ 84,700,000us-gaap_AssetImpairmentCharges	$ 88,536,000us-gaap_AssetImpairmentCharges	$ 0us-gaap_AssetImpairmentCharges	$ 0us-gaap_AssetImpairmentCharges
Building and improvements [Member] \| Minimum [Member]
Significant Accounting Policies [Line Items]
Useful life of property and equipment			35 years
Building and improvements [Member] \| Maximum [Member]
Significant Accounting Policies [Line Items]
Useful life of property and equipment			40 years
Furniture, equipment and software [Member] \| Minimum [Member]
Significant Accounting Policies [Line Items]
Useful life of property and equipment			3 years
Furniture, equipment and software [Member] \| Maximum [Member]
Significant Accounting Policies [Line Items]
Useful life of property and equipment			10 years
Software Development [Member]
Significant Accounting Policies [Line Items]
Useful life of property and equipment			5 years
Asset impairment			1,300,000
Software Development [Member] \| General and Administrative Expense [Member]
Significant Accounting Policies [Line Items]
Asset impairment				1,200,000	500,000
Assets Held-for-sale [Member]
Significant Accounting Policies [Line Items]
Asset impairment			87,200,000
Cognizant Technology Solutions [Member] \| Assets Held-for-sale [Member]
Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Transfers and Changes			(130,200,000)
Asset impairment			87,200,000
Cognizant Technology Solutions [Member] \| Property, Plant and Equipment [Member]
Significant Accounting Policies [Line Items]
Asset impairment			$ 80,200,000