v3.25.4

Summary of Significant Accounting Policies, Derivative Financial Instruments (Details) - Maximum [Member]	12 Months Ended
	Dec. 31, 2025
Derivative Financial Instruments [Abstract]
Number of months for contracts to mature	18 months
Forward Exchange Contracts [Member]
Derivative Financial Instruments [Abstract]
Number of months for contracts to mature	18 months

X

- Definition

Number of months for contracts to mature in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	sxt_NumberOfMonthsForContractsToMature
Namespace Prefix:	sxt_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

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

X

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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