Charge related to effects of Non US jurisdiction tax matter.

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- Definition

Income tax disclosure [Line Items]

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- Definition

Payment related to effects of Non-US jurisdiction tax matter.

+ References

No definition available.

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- Definition

Unrecognized Tax Benefits that Would Impact Effective Tax Rate, Resulting Change in Valuation Allowance

+ References

No definition available.

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- Definition

Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.

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- Definition

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

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- Definition

The amount of the unrecognized tax benefit of a position taken for which it is reasonably possible that the total amount thereof will significantly increase or decrease within twelve months of the balance sheet date.

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- Definition

Amount of unrecognized tax benefits.

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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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- Definition

Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset.

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Income Taxes - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Jun. 30, 2021	Jun. 27, 2020	Sep. 30, 2016	Jun. 30, 2021	Jun. 27, 2020	Sep. 30, 2020
Income Tax Disclosure [Line Items]
Federal statutory income tax rate	21.00%	21.00%		21.00%	21.00%
Charge related to effects of Non US Jurisdiction Tax Matter				$ 37.3
US Income taxes on repatriated foreign earnings				2.9
Unrecognized tax benefits	$ 20.5			20.5		$ 16.1
Income tax provision upon recognition of unrecognized tax benefit	20.5			20.5
Unrecognized tax benefits that would impact valuation allowance	10.0			10.0
Potential decrease in unrecognized tax benefits	1.0			1.0
Arena Solutions
Income Tax Disclosure [Line Items]
Reduction of valuation allowance				42.3
Onshape
Income Tax Disclosure [Line Items]
Reduction of valuation allowance					$ 21.2
KOREA, REPUBLIC OF
Income Tax Disclosure [Line Items]
Charge related to effects of Non US Jurisdiction Tax Matter				$ 34.4
Payment related to effects of Non US jurisdiction tax matter	$ 20.0		$ 12.0