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No definition available.

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- Definition

Debt Instrument Number of Extension

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	instant

- Definition

Letters Of Credit Drawn

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount represents the difference between the fair value of the payments made and the carrying amount of the debt at the time of its extinguishment, as well as expenses incurred in connection with the refinancing of debt, primarily consisting of payments to third parties.

+ References

No definition available.

+ Details

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Balance Type:	debit
Period Type:	duration

- Definition

Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense.

+ 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=66902209&loc=d3e3602-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28541-108399

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.8)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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Balance Type:	debit
Period Type:	duration

- Definition

Amount of the total principal payments made during the annual reporting period.

+ References

+ Details

Name:	us-gaap_DebtInstrumentAnnualPrincipalPayment
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

+ Details

Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

+ Details

Name:	us-gaap_DebtInstrumentInterestRateEffectivePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- 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.

+ Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount, before accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28555-108399

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of the cost of borrowed funds accounted for as interest expense for debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.8)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

Name:	us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
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- Details

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- Details

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Debt - Securitized Financing Facility (Details)		12 Months Ended
Debt - Securitized Financing Facility (Details)	Jan. 26, 2015 USD ($)	Dec. 30, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 26, 2015 USD ($)	Oct. 31, 2017 USD ($)	Oct. 23, 2017 USD ($)
Debt Instrument [Line Items]
Debt instrument, number of extensions	2
Debt instrument, extension period	1 year
Loss on debt extinguishment and refinancing transactions		$ (6,996,000)	$ 0	$ (20,554,000)
Standby letters of credit		32,300,000	25,900,000
Amounts drawn on letters of credit		0	0
3.62% Fixed Rate Senior Secured Noted, Class A-2-I
Debt Instrument [Line Items]
Debt instrument, principal	$ 750,000,000
2015 Class A-2-I Notes
Debt Instrument [Line Items]
Interest rate, stated percent					3.98%
Repayments of debt		731,300,000
Annual principal payments, quarterly installments		17,500,000.0
Loss on debt extinguishment and refinancing transactions		(6,996,000)
Write off of Deferred Debt Issuance Cost		6,300,000
Make-whole interest premium		726,000
3.90% Fixed Rate Senior Secured Notes, Class A-2-II
Debt Instrument [Line Items]
Debt instrument, principal	1,750,000,000
Variable funding notes
Debt Instrument [Line Items]
Debt instrument, principal	$ 100,000,000					$ 150,000,000
2017 Class A-2-I Notes
Debt Instrument [Line Items]
Interest rate, stated percent					3.629%
Debt instrument, principal					$ 600,000,000.0
Annual principal payments, quarterly installments		$ 6,000,000.0
Debt Instrument, Interest Rate, Effective Percentage		3.80%
2017 Class A-2-II Notes
Debt Instrument [Line Items]
Interest rate, stated percent					4.03%
Debt instrument, principal					$ 800,000,000
Annual principal payments, quarterly installments		$ 8,000,000.0
Debt Instrument, Interest Rate, Effective Percentage		4.20%
2017 Notes
Debt Instrument [Line Items]
Debt issuance costs		$ 17,700,000
2015 Class A-2-II Notes
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Effective Percentage		4.10%
Line of credit
Debt Instrument [Line Items]
Debt issuance costs			41,300,000
Amortization of Debt Discount (Premium)		$ 6,200,000	$ 6,400,000	$ 5,600,000
Revolving credit facility \| Term loan \| LIBOR rate loans
Debt Instrument [Line Items]
Basis spread on variable rate		1.50%
Revolving credit facility \| Term loan \| LIBOR rate loans \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate		1.50%
Revolving credit facility \| Term loan \| LIBOR rate loans \| Base rate
Debt Instrument [Line Items]
Basis spread on variable rate		1.50%
Minimum \| Revolving credit facility
Debt Instrument [Line Items]
Credit facility, unused capacity, commitment fee percentage		0.50%
Maximum \| Revolving credit facility
Debt Instrument [Line Items]
Credit facility, unused capacity, commitment fee percentage		1.00%