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

9 Months Ended

Jun. 29, 2025

Mar. 30, 2025

Jun. 30, 2024

Jun. 29, 2025

Jun. 30, 2024

Sep. 29, 2024

Cash Flow Hedging [Member]

Derivative Instruments, Gain (Loss) [Line Items]

Unrealized gains/(losses) on cash flow hedging instruments, before tax

$ (83.8)

$ 38.4

$ (20.8)

$ 110.2

Cash Flow Hedging [Member] | Coffee Contracts [Member]

Derivative Instruments, Gain (Loss) [Line Items]

Unrealized gains/(losses) on cash flow hedging instruments, before tax

(21.3)

$ 60.1

Cash Flow Hedging [Member] | Cross-Currency Swap [Member]

Derivative Instruments, Gain (Loss) [Line Items]

Unrealized gains/(losses) on cash flow hedging instruments, before tax

0.0

0.5

Cash Flow Hedging [Member] | Dairy Contracts [Member]

Derivative Instruments, Gain (Loss) [Line Items]

Unrealized gains/(losses) on cash flow hedging instruments, before tax

0.0

2.0

Cash Flow Hedging [Member] | Foreign Currency Contract - Other [Member]

Derivative Instruments, Gain (Loss) [Line Items]

Unrealized gains/(losses) on cash flow hedging instruments, before tax

3.5

11.5

Cash Flow Hedging [Member] | Interest Rate Contract [Member]

Derivative Instruments, Gain (Loss) [Line Items]

Unrealized gains/(losses) on cash flow hedging instruments, before tax

(2.2)

$ (3.6)

Net Investment Hedging [Member]

Derivative Instruments, Gain (Loss) [Line Items]

Unrealized gains/(losses) on net investment hedging instruments, before tax

(77.4)

114.0

143.2

181.3

Net Investment Hedging [Member] | Cross-Currency Swap [Member]

Derivative Instruments, Gain (Loss) [Line Items]

Derivatives used in Net Investment Hedge, Net of Tax

141.7

$ 96.5

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

Net Investment Hedging [Member] | ForeignExchangeYenDebt [Member]

Derivative Instruments, Gain (Loss) [Line Items]

Derivatives used in Net Investment Hedge, Net of Tax

135.2

$ 135.2

Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Coffee Contracts [Member]

Derivative Instruments, Gain (Loss) [Line Items]

Unrealized gains/(losses) on cash flow hedging instruments, before tax

(49.6)

10.6

(36.2)

73.8

Gains/(Losses) Reclassified from AOCI to Earnings

17.0

(10.7)

62.1

(57.3)

Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Cross-Currency Swap [Member]

Derivative Instruments, Gain (Loss) [Line Items]

Unrealized gains/(losses) on cash flow hedging instruments, before tax

0.0

2.3

0.9

4.7

Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Dairy Contracts [Member]

Derivative Instruments, Gain (Loss) [Line Items]

Unrealized gains/(losses) on cash flow hedging instruments, before tax

0.0

1.6

(1.3)

(1.6)

Gains/(Losses) Reclassified from AOCI to Earnings

0.0

(0.6)

1.4

(4.5)

Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Foreign Currency Contract - Other [Member]

Derivative Instruments, Gain (Loss) [Line Items]

Unrealized gains/(losses) on cash flow hedging instruments, before tax

(32.9)

23.9

17.1

33.3

Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Interest Rate Contract [Member]

Derivative Instruments, Gain (Loss) [Line Items]

Unrealized gains/(losses) on cash flow hedging instruments, before tax

(1.3)

0.0

(1.3)

0.0

Gains/(Losses) Reclassified from AOCI to Earnings

(1.0)

(3.0)

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

27.0

14.2

82.4

33.3

Unrealized gains/(losses) on net investment hedging instruments, before tax

(77.4)

114.0

143.2

187.6

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

Unrealized gains/(losses) on net investment hedging instruments, before tax

0.0

(6.3)

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

3.5

2.1

7.8

7.1

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

0.0

0.3

0.0

1.3

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

0.0

1.8

1.4

2.4

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

$ 4.0

$ 8.3

$ 20.2

$ 24.5