Related Party Transactions	6 Months Ended	12 Months Ended
Jul. 31, 2011	Jan. 31, 2011
Related Party Transactions
Related Party Transactions	Note 7—Related Party Transactions: Science Applications has fully and unconditionally guaranteed the obligations of SAIC under its $450 million 4.45% notes and $300 million 5.95% notes. These notes have been reflected as debt of Science Applications. Science Applications has fully and unconditionally guaranteed any borrowings under SAIC's amended and restated revolving credit facility maturing in fiscal 2016. SAIC has fully and unconditionally guaranteed the obligations of Science Applications under its $300 million 5.5% notes, $550 million 6.25% notes and $250 million 7.13% notes. SAIC has loaned cash to Science Applications and issues stock to employees of Science Applications. In addition, Science Applications may pay certain expenses on behalf of SAIC which are reflected in the related party note. The related party note bears interest based on LIBOR plus a market-based premium and is paid on a monthly basis or, upon approval by SAIC, increases the related party note balance. Portions of the related party note may be repaid at any time prior to maturity in fiscal 2013, which will be automatically extended for successive one-year periods unless SAIC or Science Applications provides prior notice to the other party.	Note 8—Related Party Transactions: Science Applications has fully and unconditionally guaranteed the obligations of SAIC under its $450 million 4.45% notes and $300 million 5.95% notes. These notes have been reflected as debt of Science Applications. Science Applications has fully and unconditionally guaranteed any borrowings under SAIC's amended and restated revolving credit facility maturing in fiscal 2016. SAIC has fully and unconditionally guaranteed the obligations of Science Applications under its $300 million 5.5% notes, $550 million 6.25% notes and $250 million 7.13% notes. SAIC has loaned cash to Science Applications and issues stock to employees of Science Applications. In addition, Science Applications may pay certain expenses on behalf of SAIC which are reflected in the related party note. The related party note bears interest based on LIBOR plus a market-based premium and is paid on a monthly basis or, upon approval by SAIC, increases the related party note balance. Portions of the related party note may be repaid at any time prior to maturity in fiscal 2013, which will be automatically extended for successive one-year periods unless SAIC or Science Applications provides prior notice to the other party.

The entire disclosure for related party transactions, including the nature of the relationship(s), a description of the transactions, the amount of the transactions, the effects of any change in the method of establishing the terms of the transaction from the previous period, stated interest rate, expiration date, terms and manner of settlement per the agreement with the related party, and amounts due to or from related parties. If the entity and one or more other entities are under common ownership or management control and this control affects the operating results or financial position, disclosure includes the nature of the control relationship even if there are no transactions between the entities. Disclosure may also include the aggregate amount of current and deferred tax expense for each statement of earnings presented where the entity is a member of a group that files a consolidated tax return, the amount of any tax related balances due to or from affiliates as of the date of each statement of financial position presented, the principal provisions of the method by which the consolidated amount of current and deferred tax expense is allocated to the members of the group and the nature and effect of any changes in that method. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
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-Subparagraph (SX 210.4-08.(k))
-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 3A
-Section 04
-Paragraph b

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 57
-Paragraph 1-4
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
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Reference 5: http://www.xbrl.org/2003/role/presentationRef
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Reference 6: http://www.xbrl.org/2003/role/presentationRef
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Reference 7: http://www.xbrl.org/2003/role/presentationRef
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Reference 8: http://www.xbrl.org/2003/role/presentationRef
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Reference 9: http://www.xbrl.org/2003/role/presentationRef
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+ Details