Aggregate notional amount of derivative expressed in nonmonetary units. For example, the number of barrels specified in a fuel oil forward purchase contract.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

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- Definition

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

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- Definition

The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=35736893&loc=d3e80748-113994

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- Definition

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5618551-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (a),(c),(d),(e)
-URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624171-113959

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585

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Derivative Instruments - Narrative (Details) $ in Thousands, € in Millions, £ in Millions, gal in Millions	3 Months Ended		12 Months Ended
	Dec. 28, 2018 USD ($)	Dec. 29, 2017 USD ($)	Sep. 28, 2018 USD ($)	Dec. 28, 2018 EUR (€) gal	Dec. 28, 2018 USD ($) gal	Dec. 28, 2018 GBP (£) gal
Derivative [Line Items]
Gain (loss) recognized in income	$ (7,620)	$ 1,970
Designated as Hedging Instrument \| Cash Flow Hedging
Derivative [Line Items]
Net tax loss expected to be reclassified from accumulated other comprehensive loss	7,100
Not Designated as Hedging Instrument
Derivative [Line Items]
Gain (loss) recognized in income	(9,322)	4,066
Interest rate swap agreements \| Designated as Hedging Instrument
Derivative [Line Items]
Notional amount of derivative					$ 2,600,000
Interest rate swap agreements \| Designated as Hedging Instrument \| Cash Flow Hedging
Derivative [Line Items]
Notional amount of derivative					$ 500,000
Cash flow hedge gain (loss)	12,000		$ 36,200
Gain (loss) recognized in income	(31,000)	5,245
Gasoline and diesel fuel agreements \| Not Designated as Hedging Instrument
Derivative [Line Items]
Non monetary notional amount of derivative (in gallons) \| gal				12.9	12.9	12.9
Gain (loss) recognized in income	$ (9,200)	$ (1,900)
Foreign currency forward exchange contracts \| Not Designated as Hedging Instrument
Derivative [Line Items]
Notional amount of derivative				€ 16.0		£ 10.7