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Investments and Other - Notes Receivable Items (Details) - Financing Receivable [Member]	12 Months Ended
	Dec. 30, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Latest maturity date of varying installments of long-term notes receivable	Dec. 31, 2030
Minimum [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Long-term notes receivable interest rate (as a percent)	1.00%
Maximum [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Long-term notes receivable interest rate (as a percent)	12.00%

X

- Definition

The latest maturity date for long-term notes receivable due in varying installments.

+ References

No definition available.

+ Details

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Namespace Prefix:	hsic_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Effective interest rate as of the balance sheet date on aggregate noncurrent notes receivable.

+ References

No definition available.

+ Details

Name:	hsic_NotesReceivableNoncurrentEffectiveInterestRate
Namespace Prefix:	hsic_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

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

X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: