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Income Taxes (Narrative) (Details) - USD ($) $ in Thousands			3 Months Ended
	Dec. 22, 2017	Oct. 01, 2017	Dec. 30, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Effective income tax rate			97.30%	17.60%
Federal statutory income tax rate	21.00%	35.00%
Transition Tax on Undistributed Foreign Earnings Deemed To Be Repatriated			$ 31,000
Withholding Taxes on Undistributed Foreign Earnings Deemed To Be Repatriated			15,250
Additional Income Tax Provision For Remaining Undistributed Foreign Earnings			0
Income tax benefit due to remeasurement of deferred tax assets and liabilities			$ 12,225

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Additional Income Tax Provision For Remaining Undistributed Foreign Earnings

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One-time Transition Tax on Undistributed Foreign Earnings Deemed To Be Repatriated

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Withholding Taxes on Undistributed Foreign Earnings Deemed To Be Repatriated

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
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-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319

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Amount of income tax expense (benefit) from continuing operations attributable to an adjustment of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity.

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