Debt ABL Facility (Details) - USD ($)	12 Months Ended
Dec. 28, 2019	Dec. 29, 2018
Debt Instrument [Line Items]
Borrowings under facility	$ 4,736,000,000	$ 3,457,000,000
Revolving credit facility
Debt Instrument [Line Items]
Spring maturity required balance	300,000,000
Revolving credit facility \| ABL Facility
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 1,600,000,000
Credit facility unused capacity commitment fee percentage	0.25%
Weighted-average interest rate on outstanding borrowings	2.63%	5.12%
Debt issuance costs	$ 4,000,000
Borrowings under facility	0	$ 81,000,000
Letters of credit, outstanding amount	314,000,000
Available capacity in credit facility	1,227,000,000
Revolving credit facility \| ABL Facility \| Standby Letters of Credit for Self Insurance Program
Debt Instrument [Line Items]
Credit facility, capacity available for specific purposes	800,000,000
Letters of credit, outstanding amount	249,000,000
Revolving credit facility \| ABL Facility \| Real estate commitments
Debt Instrument [Line Items]
Letters of credit, outstanding amount	64,000,000
Revolving credit facility \| ABL Facility \| Other Obligations
Debt Instrument [Line Items]
Credit facility, capacity available for specific purposes	170,000,000
Letters of credit, outstanding amount	$ 1,000,000
Revolving credit facility \| ABL Facility \| ABR
Debt Instrument [Line Items]
Basis spread on variable interest rate	0.00%
Revolving credit facility \| ABL Facility \| ABR \| Minimum
Debt Instrument [Line Items]
Basis spread on variable interest rate	0.00%
Revolving credit facility \| ABL Facility \| ABR \| Maximum
Debt Instrument [Line Items]
Basis spread on variable interest rate	0.50%
Revolving credit facility \| ABL Facility \| LIBOR
Debt Instrument [Line Items]
Basis spread on variable interest rate	1.00%
Revolving credit facility \| ABL Facility \| LIBOR \| Minimum
Debt Instrument [Line Items]
Basis spread on variable interest rate	1.00%
Revolving credit facility \| ABL Facility \| LIBOR \| Maximum
Debt Instrument [Line Items]
Basis spread on variable interest rate	1.50%
Revolving credit facility \| Former ABL senior secured revolving credit facility [Member]
Debt Instrument [Line Items]
Debt issuance costs	$ 1,000,000

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

No definition available.

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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

Weighted average interest rate of debt outstanding.

+ References

No definition available.

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- 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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28555-108399

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- Definition

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

+ References

No definition available.

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- Definition

The maximum amount of borrowing capacity under a line of credit that is available as of the balance sheet date for a specific purpose other than for financing goods acquired for inventory or imminent delivery to a customer.

+ References

No definition available.

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

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- 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.

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- Definition

Amount of long-term debt and capital lease obligations including current maturities.

+ References

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- Definition

Sum of the carrying values as of the balance sheet date of the portions of all long-term notes and loans payable due within one year or the operating cycle if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19,20)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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