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Commitments and Contingencies and Derivative Financial Instruments (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 01, 2021	Oct. 02, 2020
Letter of Credit | $1.6 Billion Revolving Credit Facility
Loss Contingencies [Line Items]
Line of credit facility, amount outstanding	$ 1.7
Letter of Credit | Committed And Uncommitted Letter Of Credit Facility
Loss Contingencies [Line Items]
Line of credit facility, amount outstanding	262.1
Line of Credit
Loss Contingencies [Line Items]
Letters of credit outstanding	263.8
Surety Bond
Loss Contingencies [Line Items]
Letters of credit outstanding	2,100.0
Interest Rate Swap
Loss Contingencies [Line Items]
Derivative, notional amount	$ 796.1
Interest Rate Swap | Minimum
Loss Contingencies [Line Items]
Derivative, fixed interest rate	0.704%
Interest Rate Swap | Maximum
Loss Contingencies [Line Items]
Derivative, fixed interest rate	1.116%
Cross Currency Interest Rate Contract
Loss Contingencies [Line Items]
Derivative, notional amount	$ 127.8
Cross Currency Interest Rate Contract | LIBOR
Loss Contingencies [Line Items]
Derivative, basis spread on variable rate	87.50%
Cross Currency Interest Rate Contract | Minimum
Loss Contingencies [Line Items]
Term of contract	3 years 6 months
Derivative, fixed interest rate	0.726%
Cross Currency Interest Rate Contract | Maximum
Loss Contingencies [Line Items]
Term of contract	10 years
Derivative, fixed interest rate	0.746%
Cross Currency Interest Rate Contract and Interest Rate Swamp
Loss Contingencies [Line Items]
Derivative asset	$ (0.8)	$ (31.5)
Interest Rate Swap and Cross Currency Interest Rate Contract
Loss Contingencies [Line Items]
Unrealized gain (loss) on derivatives	(7.4)	(14.6)
Interest Rate Swap and Cross Currency Interest Rate Contract | Deferred Long-term Liability Charges
Loss Contingencies [Line Items]
Derivative asset	(11.0)
Interest Rate Swap and Cross Currency Interest Rate Contract | Total Other Non-current Assets
Loss Contingencies [Line Items]
Derivative asset	10.2
Foreign Exchange Forward
Loss Contingencies [Line Items]
Derivative, notional amount	506.5	393.7
Derivative asset	$ 55.5	$ 53.5
Foreign Exchange Forward | Minimum
Loss Contingencies [Line Items]
Term of contract	1 month
Foreign Exchange Forward | Maximum
Loss Contingencies [Line Items]
Term of contract	12 months

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Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

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