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Organization and Basis of Presentation (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Remeasurement loss	$ (1.7)	$ (4.9)

X

- Definition

Foreign currency remeasurement gain (loss).

+ References

No definition available.

+ Details

Name:	see_ForeignCurrencyRemeasurementGainLoss
Namespace Prefix:	see_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- References

No definition available.

+ Details

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