Summary of Significant Accounting Policies Effects of Early Adoption of New Accounting Pronouncement (Details) - USD ($) $ in Millions	12 Months Ended
Oct. 03, 2021	Sep. 27, 2020	Sep. 29, 2019	Aug. 26, 2018
Amortization of Intangible Assets	$ 223.4	$ 223.7	$ 232.8
Deferred Revenue, Revenue Recognized	176.6	176.8	$ 175.2
Deferred Revenue				$ 7,000.0
Deferred Tax Assets, Net, Noncurrent	1,874.8	1,789.9
Deferred Revenue, Current	1,596.1	1,456.5
Retained Earnings (Accumulated Deficit)	(6,315.7)	(7,815.6)
Deferred Revenue, Noncurrent	6,463.0	6,598.5
Deferred Tax and Other Liabilities, Noncurrent	737.8	907.3
Operating Lease, Right-of-Use Asset	8,236.0	8,134.1
Operating Lease, Liability, Noncurrent	$ 7,738.0	$ 7,661.7

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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