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Segments - Schedule of Restructuring Charges by Segment (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Segment Reporting Information [Line Items] |  |  |  |
Total Company restructuring charges | $ 2.8 | $ 2.5 | $ 5.4 | $ 18.0
Food |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Company restructuring charges | 0.8 | 2.0 | 2.5 | 10.6
Protective |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total Company restructuring charges | $ 2.0 | $ 0.5 | $ 2.9 | $ 7.4

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- Definition Restructuring and other charges excluding amounts related to foreign subsidiaries. + References No definition available. + Details
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Namespace Prefix: | see_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- 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
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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |