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		6 Months Ended		12 Months Ended
	Mar. 31, 2024	Apr. 02, 2023	Mar. 31, 2024	Apr. 02, 2023	Oct. 01, 2023
Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Net Gains/(Losses) Included in AOCI	$ 36.4	$ (1.2)	$ 71.8	$ (181.9)
Cash Flow Hedging [Member] | Coffee Contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Net Gains/(Losses) Included in AOCI	16.2				$ (78.1)
Cash Flow Hedging [Member] | Cross-Currency Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Net Gains/(Losses) Included in AOCI	0.2				(0.6)
Cash Flow Hedging [Member] | Dairy Contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Net Gains/(Losses) Included in AOCI	(1.3)				(1.8)
Cash Flow Hedging [Member] | Foreign Currency Contract - Other [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Net Gains/(Losses) Included in AOCI	30.6				39.6
Cash Flow Hedging [Member] | Interest Rate Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Net Gains/(Losses) Included in AOCI	(5.1)				(6.6)
Net Investment Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Other Comprehensive Income (Loss), Net Investment Hedge, Gain (Loss), before Reclassification and Tax	92.5	(2.7)	67.3	(67.3)
Net Investment Hedging [Member] | Cross-Currency Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives used in Net Investment Hedge, Net of Tax	127.9		127.9		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		16.0
Net Investment Hedging [Member] | ForeignExchangeYenDebt [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives used in Net Investment Hedge, Net of Tax	135.3		135.3		$ 140.2
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	(6.2)	59.9	(46.6)	156.6
Net Gains/(Losses) Included in AOCI	(1.2)	(0.5)	63.1	(119.9)
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Cross-Currency Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Net Gains/(Losses) Included in AOCI	4.0	(2.5)	2.4	(14.2)
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	(2.3)	(3.3)	(3.9)	(4.8)
Net Gains/(Losses) Included in AOCI	(1.3)	(2.3)	(3.2)	(5.9)
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Foreign Currency Contract - Other [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Net Gains/(Losses) Included in AOCI	34.9	3.8	9.5	(42.2)
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)	0.2	(2.0)	(0.3)
Net Gains/(Losses) Included in AOCI	0.0	0.3	0.0	0.3
Designated as Hedging Instrument [Member] | Net Investment Hedging [Member] | Cross-Currency Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains/(Losses) Reclassified from AOCI to Earnings	10.2	7.0	19.1	12.3
Other Comprehensive Income (Loss), Net Investment Hedge, Gain (Loss), before Reclassification and Tax	67.0	(1.1)	73.6	(15.1)
Designated as Hedging Instrument [Member] | Net Investment Hedging [Member] | ForeignExchangeYenDebt [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains/(Losses) Reclassified from AOCI to Earnings	0.0	0.0	0.0	0.0
Other Comprehensive Income (Loss), Net Investment Hedge, Gain (Loss), before Reclassification and Tax	25.5	(1.6)	(6.3)	(52.2)
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	2.2	2.2	5.0	4.4
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	0.4	(3.0)	1.0	(5.7)
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	3.3	(0.1)	0.6	(9.2)
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	$ 7.4	$ 4.0	$ 16.2	$ 11.9