Derivative Financial Instruments (Pretax Gains and Losses on Derivative Contracts Designated as Hedging Instruments Recognized in OCI and Reclassifications from AOCI to Earnings) (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2023	Jan. 01, 2023	Oct. 01, 2023
Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains/(Losses) Recognized in OCI Before Reclassifications	$ 35.4	$ (180.7)
Net Investment Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Other Comprehensive Income (Loss), Net Investment Hedge, Gain (Loss), before Reclassification and Tax	(25.2)	(64.6)
Net Investment Hedging [Member] | Cross-Currency Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives used in Net Investment Hedge, Net of Tax	85.5		$ 87.1
Net Investment Hedging [Member] | Foreign Currency Contract - Other [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives used in Net Investment Hedge, Net of Tax	16.0		16.0
Net Investment Hedging [Member] | ForeignExchangeYenDebt [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives used in Net Investment Hedge, Net of Tax	116.2		$ 140.2
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Coffee Contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains/(Losses) Recognized in OCI Before Reclassifications	64.3	(119.4)
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Cross-Currency Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains/(Losses) Recognized in OCI Before Reclassifications	(1.6)	(11.7)
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Dairy Contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains/(Losses) Recognized in OCI Before Reclassifications	(1.9)	(3.6)
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Foreign Currency Contract - Other [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains/(Losses) Recognized in OCI Before Reclassifications	(25.4)	(46.0)
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Interest Rate Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains/(Losses) Recognized in OCI Before Reclassifications	0.0	0.0
Designated as Hedging Instrument [Member] | Net Investment Hedging [Member] | Cross-Currency Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains/(Losses) Recognized in OCI Before Reclassifications		(14.0)
Gains/(Losses) Reclassified from AOCI to Earnings	8.9	5.3
Other Comprehensive Income (Loss), Net Investment Hedge, Gain (Loss), before Reclassification and Tax	6.6
Designated as Hedging Instrument [Member] | Net Investment Hedging [Member] | ForeignExchangeYenDebt [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains/(Losses) Recognized in OCI Before Reclassifications	(31.8)	(50.6)
Gains/(Losses) Reclassified from AOCI to Earnings	0.0	0.0
Product and distribution costs | Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Coffee Contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains/(Losses) Reclassified from AOCI to Earnings	(40.4)	96.7
Product and distribution costs | Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Dairy Contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains/(Losses) Reclassified from AOCI to Earnings	(1.6)	(1.5)
Product and distribution costs | Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Foreign Currency Contract - Other [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains/(Losses) Reclassified from AOCI to Earnings	2.8	2.2
Interest Expense [Member] | Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Cross-Currency Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains/(Losses) Reclassified from AOCI to Earnings	0.6	(2.7)
Interest Expense [Member] | Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Interest Rate Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains/(Losses) Reclassified from AOCI to Earnings	(1.0)	(0.5)
Interest and Other Income [Member] | Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Cross-Currency Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains/(Losses) Reclassified from AOCI to Earnings	(2.7)	(9.1)
Interest and Other Income [Member] | Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Foreign Currency Contract - Other [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains/(Losses) Reclassified from AOCI to Earnings	0.0	0.2
Franchised Units Revenue [Member] | Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Foreign Currency Contract - Other [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains/(Losses) Reclassified from AOCI to Earnings	$ 8.8	$ 8.0