Income Taxes - Additional Information (Detail) - USD ($)	1 Months Ended	3 Months Ended		12 Months Ended
	Jan. 31, 2018	Dec. 29, 2018	Dec. 30, 2017	Sep. 28, 2019	Sep. 29, 2018
Income Taxes [Line Items]
Tax Cuts and Jobs Act measurement period adjustment		$ 5,000,000.0
Tax benefit as result of Tax Cuts and Jobs Act		341,200,000
Provisional estimate of tax benefit as result of Tax Cuts and Jobs Act					$ 346,200,000
Decrease in valuation allowance				$ (35,200,000)
Federal net operating loss expected to be expired unutilized				4,500,000
State net operating loss expected to be expired unutilized				74,600,000
Foreign net operating loss expected to be expired unutilized				46,600,000
Gross unrecognized tax benefits, excluding interest				101,600,000	89,500,000
Unrecognized tax benefit that would impact effective tax rate				87,300,000	79,000,000.0
Change in gross unrecognized tax benefits				12,100,000
Interest accrued on unrecognized tax benefits				11,100,000	9,000,000.0
Income tax penalties accrued				0
Payments for other taxes				1,700,000
Recognized tax benefit due to reversal of unrecognized tax benefit				10,900,000
Reduction in deferred tax liability related to the Tax Cuts and Jobs Act		$ 341,200,000
Provisional estimate of deduction in deferred tax liability related to the Tax Cuts and Jobs Ac					$ 346,400,000
Increase in deferred tax assets resulting from adoption of ASU 2016-16				2,900,000
Decease in accumulated deficit resulting from adoption of ASU 2016-16				2,500,000
Decease to prepaid taxes resulting from adoption of ASU 2016-16				400,000
Increase to income tax expense adoption of ASU 2016-16				27,800,000
Decrease in deferred tax liabilities due to ASU 2016-16				37,700,000
Increase to Net Income resulted from adoption of ASU 2016-16				$ 9,900,000
Increase to Earnings per Share resulted from adoption of ASU 2016-16				$ 0.04
Non-income tax loss				$ 35,600,000
Effective Income Tax Rate Reconciliation, Tax Settlement, State and Local, Amount	$ 11,000,000.0
General and Administrative Expense
Income Taxes [Line Items]
Non-income tax loss			$ (4,000,000.0)
Income tax refund				12,400,000
Net Operating Losses Carryforwards
Income Taxes [Line Items]
Amount with unlimited carry forward periods				36,800,000
Tax Credit Carryforward
Income Taxes [Line Items]
Amount with unlimited carry forward periods				3,300,000
Maximum
Income Taxes [Line Items]
Decrease in unrecognized tax benefits is reasonably possible				13,400,000
Domestic Tax Authority
Income Taxes [Line Items]
Net operating losses				29,300,000
Credit carry forwards				5,000,000.0
State and Local Jurisdiction
Income Taxes [Line Items]
Net operating losses				31,100,000
Credit carry forwards				10,400,000
Foreign Tax Authority
Income Taxes [Line Items]
Net operating losses				37,600,000
Credit carry forwards				$ 1,200,000