Disclosure of the effect on income from continuing operations, net income (or other appropriate captions of changes in applicable net assets or performance indicator), and any related per-share amounts of the current period when a change in accounting estimate affects several future periods.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 250

-SubTopic 10

-Section 50

-Paragraph 4

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-Name Accounting Standards Codification

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-SubTopic 10

-Section 45

-Paragraph 14

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

Reference 2: http://www.xbrl.org/2003/role/presentationRef

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Preparation Of Interim Financial Statements (Details) (USD $) In Millions, unless otherwise specified		3 Months Ended	9 Months Ended	0 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2014 Service Life [Member] Software [Member]	Sep. 30, 2014 Service Life [Member] Software [Member]	Jul. 01, 2014 Service Life [Member] Software - Network [Member]	Apr. 01, 2014 Service Life [Member] Software- Non-Network [Member]	Sep. 30, 2014 Stock Repurchase Program March 2013 [Member]	Mar. 31, 2014 Stock Repurchase Program March 2014 [Member]
Equity, Class of Treasury Stock [Line Items]
Stock Repurchase Program, Number of Shares Authorized to be Repurchased							300
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased	415
Treasury Stock, Value, Acquired, Cost Method						$ 1,617
Treasury Stock, Shares, Acquired						48
Property Plant And Equipment [Line Items]
Estimated useful life (years)				5 years 0 months 0 days	5 years 0 months 0 days
Change in Accounting Estimate, Financial Effect		$198, or $0.04 per diluted share	$330, or $0.06 per diluted share