Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions.

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-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Paragraph 45
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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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
-Publisher FASB
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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

+ Details

- Definition

The aggregate amount of goodwill acquired in the period and allocated to the reportable segment. The value is stated at fair value based on the purchase price allocation.

+ References+ Details

- Definition

The increase (decrease) in the recorded value of goodwill for foreign currency translation adjustments and purchase accounting adjustments needed to revise the carrying amount of goodwill to fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Subparagraph e
-Paragraph 45
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-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 2: http://www.xbrl.org/2003/role/presentationRef
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-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.

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-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
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-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.

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+ Details

Changes in the Carrying Amount of Goodwill (Detail) (USD $) In Millions	3 Months Ended									3 Months Ended
	Apr. 30, 2011	Apr. 30, 2011 Platform Solutions and Emerging Business	Apr. 30, 2011 Platform Solutions and Emerging Business Other Acquisitions	Apr. 30, 2011 Architecture, Engineering and Construction	Apr. 30, 2011 Blue Ridge Numerics, Inc Manufacturing	Apr. 30, 2011 Manufacturing	Apr. 30, 2011 Scaleform Corporation Media and Entertainment	Apr. 30, 2011 Media and Entertainment	Jan. 31, 2011 Media and Entertainment	Apr. 30, 2011 Scaleform Corporation	Apr. 30, 2011 Blue Ridge Numerics, Inc	Apr. 30, 2011 Other Acquisitions
Goodwill [Line Items]
Goodwill before accumulated impairment losses beginning balance	$ 703.3	$ 45.3		$ 224.2		$ 279.1		$ 177.3	$ 154.7
Accumulated impairment losses beginning balance	(149.2)							(149.2)	(149.2)
Beginning Balance	554.1	45.3		224.2		279.1		28.1	5.5
Effect of foreign currency translation, purchase accounting adjustments and other	3.6	0.9		1.9		0.8
Goodwill before accumulated impairment losses ending balance	754.9	49.3		226.1		302.2		177.3	154.7
Accumulated impairment losses ending balance	(149.2)							(149.2)	(149.2)
Ending Balance	605.7	49.3		226.1		302.2		28.1	5.5
Addition arising from acquisition			$ 3.1		$ 22.3		$ 22.6			$ 22.6	$ 22.3	$ 3.1