EARNINGS PER SHARE (Details) (USD $) In Millions, except Per Share data	3 Months Ended	6 Months Ended
Jul. 02, 2011	Jul. 03, 2010	Jul. 02, 2011	Jul. 03, 2010
Earnings Per Share [Abstract]
Net income	$ 5.4	$ 25.8	$ 31.2	$ 65.2
Less: income attributable to noncontrolling interest	(0.2)	(0.1)	(0.4)	(0.3)
Income attributable to Jones	5.2	25.7	30.8	64.9
Less: income allocated to participating securities	(0.2)	(1.2)	(0.8)	(3.0)
Income available to common stockholders of Jones	$ 5.0	$ 24.5	$ 30.0	$ 61.9
Weighted-average common shares outstanding - basic	81.7	82.2	81.9	82.1
Effect of dilutive employee stock options and restricted stock	1.5	0.5	1.4	0.5
Weighted-average common shares and share equivalents outstanding - diluted	83.2	82.7	83.3	82.6
Earnings per share attributable to Jones
Basic	$ 0.06	$ 0.30	$ 0.37	$ 0.75
Diluted	$ 0.06	$ 0.30	$ 0.36	$ 0.75

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The aggregate value allocated to participating securities to derive net income apportioned to common stockholders.

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The amount of net income or loss for the period per each share of common stock outstanding during the reporting period.

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-Name Regulation S-X (SX)
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-Publisher FASB
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The amount of net income or loss for the period per each share of common stock and dilutive common stock equivalents outstanding during the reporting period.

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-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
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Aggregate awards of share options and nonvested shares to be issued to an employee under a share-based compensation arrangement are considered options for purposes of computing diluted earnings per share. Such share-based awards shall be considered to be outstanding as of the grant date for purposes of computing diluted earnings per share even though their exercise may be contingent upon vesting. Those share-based awards are included in the diluted Earnings Per Share (EPS) computation even if the employee may not receive (or be able to sell) the stock until some future date. Accordingly, all shares to be issued shall be included in computing diluted EPS if the effect is dilutive. The dilutive effect of share-based compensation arrangements shall be computed using the treasury stock method. If the equity share options or other equity instruments are outstanding for only part of a period, the shares issuable shall be weighted to reflect the portion of the period during which the equity instruments were outstanding.

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The portion of consolidated profit or loss for the period, net of income taxes, which is attributable to the parent. If the entity does not present consolidated financial statements, the amount of profit or loss for the period, net of income taxes.

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The portion of net income (loss) attributable to the noncontrolling interest (if any) deducted in order to derive the portion attributable to the parent.

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Net income after adjustments for dividends on preferred stock (declared in the period) and/or cumulative preferred stock (accumulated for the period).

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The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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The average number of shares issued and outstanding that are used in calculating diluted EPS, determined based on the timing of issuance of shares in the period.

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Number of [basic] shares, after adjustment for contingently issuable shares and other shares not deemed outstanding, determined by relating the portion of time within a reporting period that common shares have been outstanding to the total time in that period.

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