Special Charges Restructuring and related activities (Policies)	9 Months Ended
	Oct. 31, 2013
Restructuring and Related Activities [Abstract]
Costs associated with employee severance and related costs	Employee severance and related costs include costs incurred for employee terminations due to a reduction of personnel resources driven by modifications of business strategy or business emphasis. Employee severance and related costs include severance benefits, notice pay, and outplacement services. These rebalance charges generally represent the aggregate of numerous unrelated rebalance plans which impact several employee groups, none of which is individually material to our financial position or results of operations. We determine termination benefits based on employee status, years of service, and local statutory requirements. We communicate termination benefits to the affected employees prior to the end of the quarter in which we record the charge.

Disclosure of accounting policy for costs associated with exit or disposal activities or restructurings that do not involve an entity newly acquired in a business combination or a discontinued operation as defined by generally accepted accounting principles. Such costs include one-time termination benefits, costs to terminate an operating lease or other contract, and costs to consolidate or close facilities and relocate employees, but exclude costs associated ongoing benefit arrangements and costs associated with the retirement of a long-lived asset.

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