Derivative Instruments and Hedging Activities (Fair Value of Outstanding Designated and Undesignated Derivative Assets and Liabilities) (Details) - USD ($) $ in Thousands	Jun. 29, 2019	Sep. 29, 2018
Prepaid Expenses and Other Current Assets
Derivatives, Fair Value [Line Items]
Derivative assets	$ 2,014	$ 8,491
Other Accrued Liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	490	173
Cash flow derivatives
Derivatives, Fair Value [Line Items]
Derivative assets	350	989
Designated hedge derivatives | Prepaid Expenses and Other Current Assets
Derivatives, Fair Value [Line Items]
Derivative assets	2,014	8,400
Designated hedge derivatives | Other Accrued Liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	265	173
Designated hedge derivatives | Cash flow derivatives | Prepaid Expenses and Other Current Assets
Derivatives, Fair Value [Line Items]
Derivative assets	350	989
Designated hedge derivatives | Cash flow derivatives | Other Accrued Liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	265	173
Designated hedge derivatives | Interest rate swap | Prepaid Expenses and Other Current Assets
Derivatives, Fair Value [Line Items]
Derivative assets	1,664	7,411
Designated hedge derivatives | Interest rate swap | 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	0	91
Hedge derivatives not designated | Other Accrued Liabilities
Derivatives, Fair Value [Line Items]
Derivative liabilities	$ 225	$ 0