Business and Summary of Significant Accounting Policies Computer Equipment, Software, Furniture, Leasehold Improvements and the Related Accumulated Depriciaation (Details) (USD $) In Millions, unless otherwise specified	Jan. 31, 2012	Jan. 31, 2011
Property, Plant and Equipment [Line Items]
Computer software, at cost	$ 133.5	$ 129.4
Computer hardware, at cost	153.3	123.7
Leasehold improvements, land and buildings, at cost	139.5	121.3
Furniture and equipment, at cost	47.7	43.6
Property, Plant and Equipment, Gross	474.0	418.0
Less: Accumulated depreciation	(369.5)	(333.5)
Computer software, hardware, leasehold improvements, furniture and equipment, net	$ 104.5	$ 84.5

Business and Summary of Significant Accounting Policies Computer Equipment, Software, Furniture, Leasehold Improvements and the Related Accumulated Depriciaation (Details) (USD $)
In Millions, unless otherwise specified

Jan. 31, 2012

Jan. 31, 2011

Property, Plant and Equipment [Line Items]

Computer software, at cost

$ 133.5

$ 129.4

Computer hardware, at cost

153.3

123.7

Leasehold improvements, land and buildings, at cost

139.5

121.3

Furniture and equipment, at cost

47.7

43.6

Property, Plant and Equipment, Gross

474.0

418.0

Less: Accumulated depreciation

(369.5)

(333.5)

Computer software, hardware, leasehold improvements, furniture and equipment, net

$ 104.5

$ 84.5

- Definition

The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land) that has been recognized in the income statement.

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- Definition

Gross amount, at the balance sheet date, of long-lived physical assets used in the normal conduct of business and not intended for resale. This can include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

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- Definition

Tangible assets that are held by an entity for use in the production or supply of goods and services, for rental to others, or for administrative purposes and that are expected to provide economic benefit for more than one year; net of accumulated depreciation. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

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