Income Taxes - Summary of Valuation Allowance (Details) - USD ($) $ in Billions	12 Months Ended
	Oct. 02, 2021		Oct. 03, 2020		Sep. 28, 2019
Valuation Allowance [Line Items]
Roll Forward, Deferred Tax Assets, Valuation Allowance	$ 2.4		$ 1.9		$ 1.4
Charges to Tax Expense	0.4	[1]	0.6	[1]	(0.1)
Changes Due to TFCF Acquisition	0.0		(0.1)		0.6
Roll Forward, Deferred Tax Assets, Valuation Allowance	$ 2.8		$ 2.4		$ 1.9

[1] Charges to tax expense in fiscal 2021 and fiscal 2020 are primarily due to International Theme Parks net operating losses.