Cash Payment Made In Exchange For Dismissal Of Lawsuits.

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Line of credit facility amount outstanding portion attributable to advance payment and bonding requirement.

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- Definition

Percent Of Proceeds Company Was Entitled To Receive.

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Reduction Of Uncertain Tax Position From Resolution.

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Surety Bonds, Amount Outstanding

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- Definition

Uncertain tax position related to discontinued operations.

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Amount of letters of credit outstanding under debtor-in-possession financing arrangement.

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-Publisher AICPA
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-Number 90-7
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This element represents disclosure of the amount of gain which has been deferred as the result of the sale of a business or operating assets to a highly leveraged entity which deferred gain has been reflected in the accompanying statement of financial position as reduction from the related asset.

+ References

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-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 5
-Section U

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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- Definition

Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

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The amount of expense provided in the period for legal costs incurred on or before the balance sheet date pertaining to resolved, pending or threatened litigation, including arbitration and mediation proceedings.

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-Publisher FASB
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-Paragraph 9
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-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.3)
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- Definition

The current portion of the amount recognized for uncertain tax positions as of the balance sheet date.

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-Subparagraph (SX 210.5-02.20)
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Amount borrowed under the credit facility as of the balance sheet date.

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-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 19, 22
-Article 5

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The charge against earnings in the period to increase loss contingency liabilities, net of any adjustments to reduce previously estimated charges.

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-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
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-Paragraph 9, 10, 11, 12
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-SubTopic 20
-Section 50
-Paragraph 1
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Reflects the estimated amount of loss from the specified contingency as of the balance sheet date.

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-Subparagraph (b)
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Period Type:	instant

- Definition

The amount of cash paid for royalties during the current period.

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-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 27
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-Name Accounting Standards Codification
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-SubTopic 10
-Section 45
-Paragraph 25
-Subparagraph (g)
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Balance Type:	credit
Period Type:	duration

- Definition

The cash inflow associated with the collection, including prepayments, of loans receivable issued for financing of goods and services.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 15, 16
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Investing Activities
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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3179-108585

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- Definition

The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
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-Paragraph 15, 16
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-Paragraph 12
-Subparagraph (b)
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- Definition

Cash received for royalties during the current period.

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-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 27
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Aggregate revenue recognized during the period (derived from goods sold, services rendered, insurance premiums, or other activities that constitute an entity's earning process). For financial services companies, also includes investment and interest income, and sales and trading gains.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 5
-Section 03
-Paragraph 1

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-Name Accounting Standards Codification
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-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
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The gross amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns as of the balance sheet date.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Interpretation (FIN)
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Unrecognized Tax Benefit
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-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
-Paragraph 15A
-Subparagraph (a)
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- Definition

This element represents the total of accruals as of the date of the statement of financial position for interest recognized for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity and the amount of statutory penalties for a tax position claimed or expected to be claimed by the entity, in its tax return, that does not meet the minimum statutory threshold to avoid payment of penalties.

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-Name FASB Interpretation (FIN)
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-Paragraph 21
-Subparagraph c
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Other Commitments And Contingencies (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended		12 Months Ended				12 Months Ended			1 Months Ended	6 Months Ended	12 Months Ended							16 Months Ended	19 Months Ended	6 Months Ended	12 Months Ended	6 Months Ended
	Jul. 31, 2011	Jul. 31, 2010	Jan. 31, 2011	Jan. 31, 2010	Jan. 31, 2009	Jan. 31, 2008	Jan. 31, 2011 VirnetX, Inc. [Member]	Jan. 31, 2011 Bechtel SAIC Company, LLC [Member]	Jan. 31, 2011 Research and Development Solutions, LLC [Member] Performance Guarantee [Member]	Mar. 31, 2006 DS And S [Member]	Jul. 31, 2011 DS And S [Member]	Jan. 31, 2011 DS And S [Member]	Jul. 31, 2011 Standby Letters Of Credit [Member]	Jan. 31, 2011 Standby Letters Of Credit [Member]	Jul. 31, 2011 Performance Guarantee [Member]	Jan. 31, 2011 Performance Guarantee [Member]	Jan. 31, 2011 Potential Insurance Claims [Member]	Jan. 31, 2010 Potential Insurance Claims [Member]	Jan. 31, 2011 Restructuring Proposals [Member]	Apr. 30, 2011 Restructuring Proposals [Member]	Jul. 31, 2011 Government Investigations And Reviews [Member]	Jan. 31, 2011 Government Investigations And Reviews [Member]	Jul. 31, 2011 Tax Audits And Reviews [Member]
Estimate of possible loss																	$ 37	$ 34
Ownership interest								30.00%		50.00%
Sale price of business										9
Cash received for repayment of loan										1
Guarantee obligations									350
Deferred gain related to sale of business											9	9
Liability for estimate of loss																					30	30
Unrecognized tax benefits			23	44	31	53																	12
Unrecognized tax benefits accrued interest			5	7																			1
Liabilities for uncertain tax positions																							23
Uncertain tax position related to discontinued operations																							1
Reduction of uncertain tax position from resolution																							5
Amount outstanding													61	52
Portion attributable to advance payment and bonding requirement													6	7
Surety bonds															309	319
Revenues	5,284	5,376	10,921	10,580	9,768														339	450
Cash payment made in exchange for dismissal of lawsuits							200
Percent of proceeds the Company was entitled to receive							35.00%
Proceeds from royalties							56
Legal fees and costs							3
Royalty payments							2
Amount outstanding	$ 0		$ 0