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Future Taxable Income to Recognize Deferred Tax Assets

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Income Taxes [Line Items]

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taxes payable, repatriation tax

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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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

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The amount of income taxes from which a reporting entity is exempt or for which it will receive a reduction in income taxes as a result of the income tax holiday granted by the taxing jurisdiction.

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Per share amount effect of the income tax benefit resulting from the income tax holidays granted by taxing jurisdictions.

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The date on which the special tax status will terminate.

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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 increase (decrease) in the income tax rates.

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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 foreign income tax expense (benefit).

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Tax year that remains open to examination under enacted tax laws, in CCYY format.

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Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.

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Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

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Income Taxes (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Sep. 27, 2019	Sep. 28, 2018	Sep. 29, 2017
Income Taxes [Line Items]
Foreign Earnings Repatriated	$ 232.7
United States tax rate	21.00%	24.60%	35.00%
Foreign tax rate difference	$ (115.3)	$ (111.9)	$ (174.6)
Income tax holiday	Sep. 30, 2020
Impact of tax holiday	$ 32.8	$ 38.4	37.4
Impact of tax holiday on diluted earnings per share (in dollars per share)	$ 0.19	$ 0.21
Valuation Allowance, Amount	$ 129.1	$ 118.6
Tax benefit to recognize if valuation allowance is reversed	129.1
Future taxable income needed to utilize deferred tax assets	106.4
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	10.5	27.7
Federal net operating loss carry forwards	$ 10.3
Operating loss carryforwards, expiration date	Dec. 31, 2035
Total unrecognized tax benefits that would impact the effective tax rate	$ 87.6
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense	6.0	4.1	2.6
Previously unrecognized tax benefits related to the expiration of the statute of limitations	0.2
Decreases relating to settlements with taxing authorities	6.3
Accrued interest or penalties related to unrecognized tax benefit	12.7	7.5
Effective Income Tax Rate Reconciliation, Repatriation of Foreign Earnings, Amount	8.1	224.6	0.0
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount	0.0	18.3	0.0
EffectiveIncomeTaxRateReconciliationGlobalIntangibleLowTaxedIncomeAmount	54.3	0.0	0.0
EffectiveIncomeTaxRateReconciliationForeignDerivedIntangibleIncome	(41.5)	$ 0.0	$ 0.0
Foreign Tax Authority [Member]
Income Taxes [Line Items]
Valuation Allowance, Amount	19.3
State and Local Jurisdiction [Member]
Income Taxes [Line Items]
Valuation Allowance, Amount	109.8
Tax credit carryforward	106.4
UNITED STATES
Income Taxes [Line Items]
Federal net operating loss carry forwards	$ 18.2
Open tax year	2000
CALIFORNIA
Income Taxes [Line Items]
Open tax year	1999
CANADA
Income Taxes [Line Items]
Open tax year	2013
LUXEMBOURG
Income Taxes [Line Items]
Open tax year	2013
MEXICO
Income Taxes [Line Items]
Open tax year	2013
JAPAN
Income Taxes [Line Items]
Open tax year	2014
SINGAPORE
Income Taxes [Line Items]
Open tax year	2013
Other Current Liabilities [Member]
Income Taxes [Line Items]
Foreign Earnings Repatriated	$ 195.9
Other Noncurrent Liabilities [Member]
Income Taxes [Line Items]
Foreign Earnings Repatriated	$ 206.6