Credit Losses - Allowance for Credit Losses (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 28, 2025	Mar. 29, 2024
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 26.6
Foreign currency translation	0.8
Provision for credit losses	1.3	$ 4.5
Write-offs charged against the allowance	(0.7)
Recoveries	(1.4)
Ending balance	$ 26.6

Accounts Receivable, Allowance For Credit Loss, Foreign Currency Translation

No definition available.

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Namespace Prefix:	nvst_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of allowance for credit loss on accounts receivable.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
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+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Amount of increase in allowance for credit loss on accounts receivable, from recovery.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

+ Details

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Balance Type:	na
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- Definition

Amount of direct write-downs of accounts receivable charged against the allowance.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

Amount of expense (reversal of expense) for expected credit loss on accounts receivable.

+ References

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