Share-Based Compensation Stock Option Range of Exercise Prices (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended				12 Months Ended
Dec. 29, 2012	Dec. 31, 2011	Jan. 01, 2011	Jan. 02, 2010	Dec. 29, 2012 $0 - $7.00 [Member]	Dec. 29, 2012 $7.01 - 10.75 [Member]	Dec. 29, 2012 $10.76 - 15.54 [Member]	Dec. 29, 2012 $15.55 - 22.00 [Member]	Dec. 29, 2012 $22.01 - 29.70 [Member]	Dec. 29, 2012 $0 - 29.70 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Shares Underlying Outstanding, Options					705,786	683,071	776,599	167,195	184,080	2,516,731
Shares Outstanding, Options, Weighted Average Remaining Contractual Term					1.0	5.8	2.8	0.4	1.2	2.8
Shares Outstanding, Options, Weighted Average Exercise Price					$ 5.25	$ 10.31	$ 11.35	$ 16.22	$ 29.5	$ 11.05
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Lower Range Limit					$ 0	$ 7.01	$ 10.76	$ 15.55	$ 22.01	$ 0
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Upper Range Limit					$ 7.00	$ 10.75	$ 15.54	$ 22.00	$ 29.70	$ 29.70
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number	1,787,251
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value	$ 2.9
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price	$ 9.16
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term	0.8
Shares Exercisable, Options					705,786	141,742	479,665	167,195	184,080	1,678,468
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term					1.0	5.4	2.2	0.4	1.2	1.7
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Exercisable Options, Weighted Average Exercise Price	$ 15.32	$ 12.85	$ 11.72	$ 11.25	$ 5.25	$ 10.35	$ 11.4	$ 16.22	$ 29.5	$ 11.25

The weighted average period between the balance sheet date and expiration for all vested portions of options outstanding and currently exercisable (or convertible) under the plan, which may be expressed in a decimal value for number of years.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

As of the balance sheet date, the total dollar difference between fair values of the underlying shares reserved for issuance and exercise prices of fully vested and expected to vest options outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph d(1)

-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

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (e)(1)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

As of the balance sheet date, the number of shares into which fully vested and expected to vest stock options outstanding can be converted under the option plan.

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- Definition

As of the balance sheet date, the weighted-average exercise price for outstanding stock options that are fully vested or expected to vest.

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The weighted-average period between the balance sheet date and expiration date for fully vested and expected to vest options outstanding, which may be expressed in a decimal value for number of years.

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- Definition

Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(iii)

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- Definition

The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph 64

-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

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

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-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

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Shares Exercisable, Options

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Shares Underlying Outstanding, Options

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