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Investments (Details Textuals) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jul. 31, 2011	Aug. 01, 2010	Jul. 31, 2011	Aug. 01, 2010	Jan. 30, 2011
Investments (Textuals) [Abstract]
Investment in voting common stock	21.40%	21.40%	21.40%	21.40%	21.40%
Total ownership percentage	21.00%	21.00%	21.00%	21.00%	21.00%
License fees and reimbursement for operating expenses	$ 9.1	$ 8.6	$ 18.1	$ 16.8
Receivables from Banfield	$ 3.1	$ 3.0	$ 3.1	$ 3.0	$ 2.7

The aggregate amount of receivables to be collected from related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth, at the financial statement date. which are usually due within one year (or one business cycle).

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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

Amount of transactions with related party during the financial reporting period.

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