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Debt - Private Placement Facilities (Details) - Private placement facilities [Member] $ in Millions		9 Months Ended
	Aug. 10, 2010 USD ($) company	Sep. 24, 2016 USD ($)	Sep. 22, 2014 USD ($)	Apr. 30, 2012 USD ($)
Debt Instrument [Line Items]
Date of borrowing	Aug. 10, 2010
Debt instrument, maximum borrowing capacity	$ 400	$ 975
Private placement facility additional borrowing capacity			$ 200	$ 375
Number of insurance companies providing private placement facilities (in number of insurance companies) | company	2
Debt instrument, maturity date		Sep. 22, 2017
Minimum [Member]
Debt Instrument [Line Items]
Term of issuances under private placement facilities		5 years
Maximum [Member]
Debt Instrument [Line Items]
Term of issuances under private placement facilities		15 years
Average term of issuances under private placement facilities		12 years

X

- Definition

Average period of time between issuance and maturity of the debt instruments, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Namespace Prefix:	hsic_
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Balance Type:	na
Period Type:	duration

X

- Definition

The increase in the maximum borrowing capacity under the entity's private placement facilities.

+ References

No definition available.

+ Details

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

X

- Definition

The maximum amount which can be borrowed under a debt instrument.

+ References

No definition available.

+ Details

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

X

- Definition

The number of insurance companies that have provided the private placement facilities.

+ References

No definition available.

+ Details

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Namespace Prefix:	hsic_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Date the debt instrument was issued, in CCYY-MM-DD format.

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

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Balance Type:	na
Period Type:	duration

X

- 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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X

- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ 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)(2))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	na
Period Type:	duration

X

- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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

X

- Details

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Namespace Prefix:
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Balance Type:
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- Details

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- Details

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