Employee Retirement Plans (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Sep. 28, 2013 Y item	Sep. 29, 2012	Sep. 24, 2011
Employee Retirement Plans
Minimum hours per week to be eligible for participation in the plan	36
Minimum age of eligible employees	18
Percentage match of employee contributions	50.00%
Percent of maximum annual contribution per employee	6.00%
Contributions to 401(k) plan	$ 5.2	$ 4.4	$ 2.7
Canadian Plans
Contributions to Canadian plans	1.4	1.0	0.8
Defined Benefit Plan
Projected benefit obligation classified in other long-term liabilities	1.4	1.1
Net periodic pension expense (income)	$ 0.3	$ (0.1)	$ 0.5

Represents the minimum age required for an employee to be eligible to participate in the defined contribution plan.

No definition available.

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- Definition

Represents the minimum hours per week and employee must work to participate in the defined contribution plan.

+ References

No definition available.

+ Details

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- Details

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- Definition

The amount of payment into the fund established for purposes of making future disbursements to the individual in accordance with the terms and understanding of the deferred compensation arrangement.

+ References

No definition available.

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- Definition

The total amount of net periodic benefit cost for defined benefit plans for the period. Periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) due to settlements or curtailments.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (h)

-URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920

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- Definition

The amount of the cost recognized during the period for defined contribution plans.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 70

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6414718&loc=d3e28014-114942

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- Definition

Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.

+ References

No definition available.

+ Details

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- Definition

Maximum percentage of employee gross pay the employee may contribute to a defined contribution plan.

+ References

No definition available.

+ Details

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- Definition

This represents the noncurrent liability for underfunded plans recognized in the balance sheet that is associated with the defined benefit pension plans and other postretirement defined benefit plans.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.24)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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-URI http://asc.fasb.org/extlink&oid=21915240&loc=d3e1703-114919

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