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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 |
--- | --- | --- | ---
Mar. 29, 2020 | Mar. 31, 2019 | Mar. 29, 2020 | Mar. 31, 2019 | Sep. 29, 2019
Cash Flow Hedging [Member] |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |
Gains/(Losses) Recognized in OCI Before Reclassifications | $ (127.9) | $ (12.4) | $ (95.5) | $ (21.5) |
Net Investment Hedging [Member] |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |
Gains/(Losses) Recognized in OCI Before Reclassifications | 57.6 | 2.9 | 81.3 | (19.0) |
Net Investment Hedging [Member] | Cross-Currency Swap [Member] |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |
Derivatives used in Net Investment Hedge, Net of Tax | 45.9 |  | 45.9 |  | $ 0.0
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 | (14.1) |  | (14.1) |  | $ (26.1)
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 | (140.6) | (14.9) | (120.6) | (30.6) |
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 | 2.9 | 5.4 | 9.1 | (2.6) |
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 | 26.8 | (2.9) | 22.1 | 11.7 |
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 | (12.1) | 0.0 | (1.1) | 0.0 |
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 | (4.9) | 0.0 | (5.0) | 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 | 58.0 | 0.0 | 68.7 | 0.0 |
Designated as Hedging Instrument [Member] | Net Investment Hedging [Member] | ForeignExchangeYenDebt [Member] |  |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |  |
Gains/(Losses) Recognized in OCI Before Reclassifications | (0.4) | 2.9 | 12.6 | (19.0) |
Gains/(Losses) Reclassified from AOCI to Earnings | 0.0 | 0.0 | 0.0 | 0.0 |
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 | 0.5 | 1.4 | 1.3 | 2.8 |
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) | (0.1) | (0.6) | (0.5) |
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 | 3.9 | 0.0 | 7.2 | 0.0 |
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 | 0.2 | 1.4 | 5.8 | (9.9) |
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 | 2.0 | 0.0 | 2.0 | 0.0 |
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 | (0.6) | 0.0 | (0.6) | 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 | 0.9 | 1.3 | 2.6 | 2.7 |
Cost of Goods and Services Sold [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 | (1.0) | 1.7 | (1.3) | 2.2 |
Cost of Goods and Services Sold [Member] | 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 | 0.0 | (0.1) | 0.0 | (0.3) |
Cost of Goods and Services Sold [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 | $ 0.7 | $ 0.0 | $ 0.7 | $ 0.0 |

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