XML 97 R86.htm IDEA: XBRL DOCUMENT
v3.25.3

Fair Value Measurements, Equity Investments and Other Financial Instruments - Schedule of Equity Investment Without Readily Determinable Fair Value (Details) - USD ($) $ in Millions | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2025 | Dec. 31, 2024
Equity Securities without Readily Determinable Fair Value [Roll Forward] |  |
Carrying value at the beginning of period | $ 13.9 | $ 13.8
Purchases | 0.0 | 0.0
Impairments or downward adjustments | 0.0 | 0.0
Upward adjustments | 0.0 | 0.0
Currency translation on investments | 0.8 | 0.1
Carrying value at the end of period | $ 14.7 | $ 13.9

X
- Definition Equity Securities without Readily Determinable Fair Value, Asset Purchases + References No definition available. + Details
Name: | see_EquitySecuritiesWithoutReadilyDeterminableFairValueAssetPurchases
Namespace Prefix: | see_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Equity Securities without Readily Determinable Fair Value, Currency Translation On Investments + References No definition available. + Details
Name: | see_EquitySecuritiesWithoutReadilyDeterminableFairValueCurrencyTranslationOnInvestments
Namespace Prefix: | see_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Equity Securities without Readily Determinable Fair Value + References No definition available. + Details
Name: | see_EquitySecuritiesWithoutReadilyDeterminableFairValueRollForward
Namespace Prefix: | see_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of investment in equity security without readily determinable fair value. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 321 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479536/321-10-50-3 + Details
Name: | us-gaap_EquitySecuritiesWithoutReadilyDeterminableFairValueAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of loss from downward price adjustment on investment in equity security without readily determinable fair value. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 321 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479536/321-10-50-3 + Details
Name: | us-gaap_EquitySecuritiesWithoutReadilyDeterminableFairValueDownwardPriceAdjustmentAnnualAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of gain from upward price adjustment on investment in equity security without readily determinable fair value. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 321 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479536/321-10-50-3 + Details
Name: | us-gaap_EquitySecuritiesWithoutReadilyDeterminableFairValueUpwardPriceAdjustmentAnnualAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration