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Derivative Financial Instruments - Narrative (Details) |  |  | 12 Months Ended
--- | --- | --- | ---
Dec. 29, 2019 USD ($) instrument | Sep. 29, 2019 USD ($) instrument | Sep. 30, 2018 agreement
Derivatives not designated as hedging instruments |  |  |
Derivative Financial Instruments |  |  |
Number of instruments held | instrument | 0 | 0 |
Interest rate swap agreements |  |  |
Derivative Financial Instruments |  |  |
Effective portion of interest rate swap agreements | $ (9,200,000) |  |
Effective portion of interest rate swap agreements |  | $ (10,900,000) |
Interest rate swap agreements | Designated as cash flow hedges | Derivatives designated as hedging instruments |  |  |
Derivative Financial Instruments |  |  |
Number of derivative agreements | agreement |  |  | 5
Notional amount | $ 237,500,000 |  |
Fixed rate | 2.79% |  |
Gain (loss) to be reclassified during next twelve months | $ 2,500,000 |  |
Interest Rate Swap 1 | Designated as cash flow hedges | Derivatives designated as hedging instruments |  |  |
Derivative Financial Instruments |  |  |
Notional amount | 47,500,000 |  |
Interest Rate Swap 2 | Designated as cash flow hedges | Derivatives designated as hedging instruments |  |  |
Derivative Financial Instruments |  |  |
Notional amount | 47,500,000.0 |  |
Interest Rate Swap 3 | Designated as cash flow hedges | Derivatives designated as hedging instruments |  |  |
Derivative Financial Instruments |  |  |
Notional amount | 47,500,000.0 |  |
Interest Rate Swap 4 | Designated as cash flow hedges | Derivatives designated as hedging instruments |  |  |
Derivative Financial Instruments |  |  |
Notional amount | 47,500,000.0 |  |
Interest Rate Swap 5 | Designated as cash flow hedges | Derivatives designated as hedging instruments |  |  |
Derivative Financial Instruments |  |  |
Notional amount | $ 47,500,000.0 |  |

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- Definition Nominal or face amount used to calculate payment on derivative. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5580258-113959 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5579245-113959 + Details
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