Derivative Financial Instruments Derivative Financial Instruments (Fair Value of Outstanding Derivative Contracts) (Details) - USD ($) $ in Millions	Jun. 27, 2021	Sep. 27, 2020
Prepaid Expenses and Other Current Assets [Member] | Designated as Hedging Instrument [Member] | Coffee Contracts [Member]
Derivative [Line Items]
Derivative Assets	$ 63.0	$ 2.6
Prepaid Expenses and Other Current Assets [Member] | Designated as Hedging Instrument [Member] | Dairy Contracts [Member]
Derivative [Line Items]
Derivative Assets	0.3	2.1
Prepaid Expenses and Other Current Assets [Member] | Designated as Hedging Instrument [Member] | Foreign Currency Contract - Other [Member]
Derivative [Line Items]
Derivative Assets	7.2	8.6
Prepaid Expenses and Other Current Assets [Member] | Not Designated as Hedging Instrument [Member] | Dairy Contracts [Member]
Derivative [Line Items]
Derivative Assets	0.1	0.0
Prepaid Expenses and Other Current Assets [Member] | Not Designated as Hedging Instrument [Member] | Diesel and Other Contracts [Member]
Derivative [Line Items]
Derivative Assets	0.5	0.0
Prepaid Expenses and Other Current Assets [Member] | Not Designated as Hedging Instrument [Member] | Foreign Currency Contract - Other [Member]
Derivative [Line Items]
Derivative Assets	5.7	2.3
Other Long-Term Assets [Member] | Designated as Hedging Instrument [Member] | Cross-Currency Swap [Member]
Derivative [Line Items]
Derivative Assets	48.0	37.7
Other Long-Term Assets [Member] | Designated as Hedging Instrument [Member] | Foreign Currency Contract - Other [Member]
Derivative [Line Items]
Derivative Assets	5.1	3.8
Other Long-Term Assets [Member] | Designated as Hedging Instrument [Member] | Interest Rate Contract [Member]
Derivative [Line Items]
Derivative Assets	2.9	0.0
Other Long-Term Assets [Member] | Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]
Derivative [Line Items]
Derivative Assets	27.6	45.8
Other Current Liabilities [Member] | Designated as Hedging Instrument [Member] | Coffee Contracts [Member]
Derivative [Line Items]
Derivative Liabilities	0.0	1.4
Other Current Liabilities [Member] | Designated as Hedging Instrument [Member] | Dairy Contracts [Member]
Derivative [Line Items]
Derivative Liabilities	2.1	1.4
Other Current Liabilities [Member] | Designated as Hedging Instrument [Member] | Foreign Currency Contract - Other [Member]
Derivative [Line Items]
Derivative Liabilities	14.5	1.6
Other Current Liabilities [Member] | Not Designated as Hedging Instrument [Member] | Dairy Contracts [Member]
Derivative [Line Items]
Derivative Liabilities	0.3	0.0
Other Current Liabilities [Member] | Not Designated as Hedging Instrument [Member] | Diesel and Other Contracts [Member]
Derivative [Line Items]
Derivative Liabilities	0.0	1.7
Other Current Liabilities [Member] | Not Designated as Hedging Instrument [Member] | Foreign Currency Contract - Other [Member]
Derivative [Line Items]
Derivative Liabilities	0.7	1.2
Other Long-Term Liabilities [Member] | Designated as Hedging Instrument [Member] | Coffee Contracts [Member]
Derivative [Line Items]
Derivative Liabilities	0.0	0.1
Other Long-Term Liabilities [Member] | Designated as Hedging Instrument [Member] | Cross-Currency Swap [Member]
Derivative [Line Items]
Derivative Liabilities	3.7	7.3
Other Long-Term Liabilities [Member] | Designated as Hedging Instrument [Member] | Foreign Currency Contract - Other [Member]
Derivative [Line Items]
Derivative Liabilities	9.5	2.6
Other Long-Term Liabilities [Member] | Designated as Hedging Instrument [Member] | Interest Rate Contract [Member]
Derivative [Line Items]
Derivative Liabilities	$ 3.3	$ 69.3