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

No definition available.

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Namespace Prefix:	us-gaap_
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Period Type:	duration

- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (b)(1)
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 3: 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(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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

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

- Definition

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

+ References

No definition available.

+ Details

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

- Definition

The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.

+ 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 210.5-02.17)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.8)
-URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Derivative aggregate interest rate.

+ References

No definition available.

+ Details

Name:	usfd_DerivativeAggregateInterestRate
Namespace Prefix:	usfd_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Repricing Transaction Premium Percent

+ References

No definition available.

+ Details

Name:	usfd_RepricingTransactionPremiumPercent
Namespace Prefix:	usfd_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_DebtInstrumentAxis=usfd_TermLoanFacilityAMember
Namespace Prefix:
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Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=usfd_SeniorSecuredTermLoanFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=us-gaap_InterestRateSwapMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_LondonInterbankOfferedRateLIBORMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=usfd_AlternativeBaseRateMember
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Debt Term Loan Facility (Details) - USD ($) $ in Millions	12 Months Ended
Debt Term Loan Facility (Details) - USD ($) $ in Millions	Dec. 28, 2019	Sep. 13, 2019	Dec. 29, 2018
Debt Instrument [Line Items]
Borrowings under facility	$ 4,736		$ 3,457
Aggregate principal amount of debt	4,779
Initial Term Loan Facility \| Senior secured term loan facility
Debt Instrument [Line Items]
Borrowings under facility	2,125		2,145
Write-off of unamortized deferred financing costs	2
Unamortized deferred financing costs	$ 4		6
Repricing Transaction Premium Percent	1.00%
Initial Term Loan Facility \| Senior secured term loan facility \| Interest Rate Swap
Debt Instrument [Line Items]
Aggregate rate on notional amount	3.45%
Initial Term Loan Facility \| LIBOR \| Senior secured term loan facility
Debt Instrument [Line Items]
Basis spread on variable interest rate	1.75%
Initial Term Loan Facility \| Alternative base rate \| Senior secured term loan facility
Debt Instrument [Line Items]
Basis spread on variable interest rate	0.75%
Incremental Term Loan Facility \| Senior secured term loan facility
Debt Instrument [Line Items]
Borrowings under facility	$ 1,465		0
Unamortized deferred financing costs	$ 35		$ 0
Repricing Transaction Premium Percent	1.00%
Aggregate principal amount of debt	$ 1,500	$ 1,500
Incremental Term Loan Facility \| LIBOR \| Senior secured term loan facility
Debt Instrument [Line Items]
Basis spread on variable interest rate	2.00%
Incremental Term Loan Facility \| Alternative base rate \| Senior secured term loan facility
Debt Instrument [Line Items]
Basis spread on variable interest rate	1.00%