For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 21

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13537-108611

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 275

-SubTopic 10

-Section 50

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-URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6404-108592

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

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Reference 4: http://www.xbrl.org/2003/role/presentationRef

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-Name Accounting Standards Codification

-Topic 275

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-Section 50

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- Definition

Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 280

-SubTopic 10

-Section 50

-Paragraph 41

-Subparagraph (b)

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- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

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Segment and Geographic Information (Details 1) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 1,290us-gaap_Revenues	$ 1,263us-gaap_Revenues	$ 1,302us-gaap_Revenues	$ 1,196us-gaap_Revenues	$ 1,206us-gaap_Revenues	$ 1,152us-gaap_Revenues	$ 1,205us-gaap_Revenues	$ 1,140us-gaap_Revenues	$ 5,051us-gaap_Revenues	$ 4,702us-gaap_Revenues	$ 4,270us-gaap_Revenues
Long-lived Assets	2,665us-gaap_NoncurrentAssets				2,751us-gaap_NoncurrentAssets				2,665us-gaap_NoncurrentAssets	2,751us-gaap_NoncurrentAssets
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									2,911	2,723	2,508
Long-lived Assets	2,117				2,206				2,117	2,206
European region [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									1,316	1,226	1,067
Long-lived Assets	430				432				430	432
Asia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									528	483	453
Long-lived Assets	54				59				54	59
Rest of the world [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									296	270	242
Long-lived Assets	$ 64				$ 54				$ 64	$ 54
Geographic Concentration Risk [Member] \| Revenue [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk									100.00%	100.00%	100.00%
Geographic Concentration Risk [Member] \| Revenue [Member] \| United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk									58.00%	58.00%	59.00%
Geographic Concentration Risk [Member] \| Revenue [Member] \| European region [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk									26.00%	26.00%	25.00%
Geographic Concentration Risk [Member] \| Revenue [Member] \| Asia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk									10.00%	10.00%	11.00%
Geographic Concentration Risk [Member] \| Revenue [Member] \| Rest of the world [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk									6.00%	6.00%	5.00%
Geographic Concentration Risk [Member] \| Long-lived Assets [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk									100.00%	100.00%
Geographic Concentration Risk [Member] \| Long-lived Assets [Member] \| United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk									80.00%	80.00%
Geographic Concentration Risk [Member] \| Long-lived Assets [Member] \| European region [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk									16.00%	16.00%
Geographic Concentration Risk [Member] \| Long-lived Assets [Member] \| Asia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk									2.00%	2.00%
Geographic Concentration Risk [Member] \| Long-lived Assets [Member] \| Rest of the world [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk									2.00%	2.00%