Income Taxes (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
Dec. 28, 2014	Dec. 29, 2013	Sep. 27, 2015
Income Taxes
Effective tax rate (as a percent)	26.40%	33.80%
Undistributed earnings of foreign subsidiaries	$ 53.0
Loss carry-forwards in foreign jurisdictions, valuation allowance	7.3
Represents the period of projected cumulative pre-tax losses in certain foreign jurisdictions			36 months
R&E credits	$ 1.2

Represents the period of projected cumulative pre-tax losses in certain foreign jurisdictions.

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- Definition

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

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- Definition

Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to research tax credit.

+ References

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- Definition

The portion of the valuation allowance pertaining to the deferred tax asset representing potential future taxable deductions from net operating loss carryforwards for which it is more likely than not that a tax benefit will not be realized.

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- Definition

Amount of undistributed earnings of foreign subsidiaries intended to be permanently reinvested outside the country of domicile.

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