Derivative Instruments and Hedging Activities (Fair Value of Outstanding Designated and Undesignated Derivative Assets and Liabilities) (Details) - USD ($) $ in Thousands	Mar. 30, 2019	Sep. 29, 2018
Prepaid Expenses and Other Current Assets
Derivatives, Fair Value [Line Items]
Derivative assets	$ 4,095	$ 8,491
Other Accrued Liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	78	173
Cash flow derivatives
Derivatives, Fair Value [Line Items]
Derivative assets	314	989
Designated hedge derivatives | Prepaid Expenses and Other Current Assets
Derivatives, Fair Value [Line Items]
Derivative assets	3,998	8,400
Designated hedge derivatives | Other Accrued Liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	78	173
Designated hedge derivatives | Cash flow derivatives | Prepaid Expenses and Other Current Assets
Derivatives, Fair Value [Line Items]
Derivative assets	314	989
Designated hedge derivatives | Cash flow derivatives | Other Accrued Liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	78	173
Designated hedge derivatives | Interest rate swaps | Prepaid Expenses and Other Current Assets
Derivatives, Fair Value [Line Items]
Derivative assets	3,684	7,411
Designated hedge derivatives | Interest rate swaps | Other Accrued Liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	0	0
Hedge derivatives not designated | Prepaid Expenses and Other Current Assets
Derivatives, Fair Value [Line Items]
Derivative assets	97	91
Hedge derivatives not designated | Other Accrued Liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	$ 0	$ 0