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Segment, Other Supplemental Information and Concentrations Revenue by Product and Services (Detail) (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
Segment Reporting [Abstract] |  |  |  |  |  |  |  |  |  |  |
Products (software and hardware) |  |  |  |  |  |  |  |  | $ 1,227 us-gaap_SalesRevenueGoodsNet | $ 1,230 us-gaap_SalesRevenueGoodsNet | $ 1,297 us-gaap_SalesRevenueGoodsNet
Consulting services |  |  |  |  |  |  |  |  | 817 us-gaap_TechnologyServicesRevenue | 818 us-gaap_TechnologyServicesRevenue | 776 us-gaap_TechnologyServicesRevenue
Maintenance services |  |  |  |  |  |  |  |  | 688 us-gaap_MaintenanceRevenue | 644 us-gaap_MaintenanceRevenue | 592 us-gaap_MaintenanceRevenue
Total services |  |  |  |  |  |  |  |  | 1,505 us-gaap_SalesRevenueServicesNet | 1,462 us-gaap_SalesRevenueServicesNet | 1,368 us-gaap_SalesRevenueServicesNet
Total revenue | $ 761 us-gaap_Revenues | $ 667 us-gaap_Revenues | $ 676 us-gaap_Revenues | $ 628 us-gaap_Revenues | $ 769 us-gaap_Revenues | $ 666 us-gaap_Revenues | $ 670 us-gaap_Revenues | $ 587 us-gaap_Revenues | $ 2,732 us-gaap_Revenues | $ 2,692 us-gaap_Revenues | $ 2,665 us-gaap_Revenues

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- Definition Revenue derived from maintenance services provided under contracts or arrangements with clients. For example, it may include the maintenance of software, plant and equipment, and facilities. + 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(d)) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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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 + Details
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- Definition Aggregate revenue during the period from the sale of goods in the normal course of business, after deducting returns, allowances and discounts. + 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(a)) -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 + Details
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- Definition Aggregate revenue during the period from services rendered in the normal course of business, after deducting allowances and discounts. + 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(d)) -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 + Details
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- Details
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- Definition Revenue from providing technology services. The services may include training, installation, engineering or consulting. Consulting services often include implementation support, software design or development, or the customization or modification of the licensed software. + 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(d)) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 985 -SubTopic 605 -Section 25 -Paragraph 76 -URI http://asc.fasb.org/extlink&oid=22169047&loc=d3e132428-111767 + Details
Name: | us-gaap_TechnologyServicesRevenue
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