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. 27, 2021

Jun. 28, 2020

Jun. 27, 2021

Jun. 28, 2020

Sep. 27, 2020

Cash Flow Hedging [Member]

Derivative Instruments, Gain (Loss) [Line Items]

Gains/(Losses) Recognized in OCI Before Reclassifications

$ 34.0

$ (28.6)

$ 138.9

$ (124.1)

Net Investment Hedging [Member]

Derivative Instruments, Gain (Loss) [Line Items]

Gains/(Losses) Recognized in OCI Before Reclassifications

32.4

(24.6)

49.9

56.7

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

Derivative Instruments, Gain (Loss) [Line Items]

Derivatives used in Net Investment Hedge, Net of Tax

32.8

$ 32.6

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

(7.5)

$ (37.1)

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

62.8

(13.2)

80.5

(14.3)

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

3.1

(1.0)

13.5

8.1

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

(1.7)

8.6

(0.1)

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

(5.1)

(14.5)

(23.9)

7.6

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

(25.1)

(8.5)

68.9

(129.1)

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

20.6

(7.3)

10.2

61.4

Designated as Hedging Instrument [Member] | Net Investment Hedging [Member] | ForeignExchangeYenDebt [Member]

Derivative Instruments, Gain (Loss) [Line Items]

Gains/(Losses) Recognized in OCI Before Reclassifications

11.8

(17.3)

39.7

(4.7)

Gains/(Losses) Reclassified from AOCI to Earnings

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

(2.5)

0.0

(5.2)

0.0

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

0.5

4.1

2.5

4.8

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

(3.1)

(5.0)

(7.7)

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

0.2

1.5

1.8

0.9

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

(0.3)

(0.7)

(1.4)

0.6

Interest Expense [Member] | 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

3.3

2.9

9.9

10.1

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

3.4

(6.9)

12.1

(1.1)

Interest and Other Income [Member] | 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

0.0

(1.1)

0.0

(1.7)

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

3.9

0.0

6.1

Interest and Other Income [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

0.0

(3.6)

0.0

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

$ 0.0

$ 0.2

$ 4.0