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Leases - Lease Payments Captured in Lease Receivables (Details) - USD ($) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2024	Dec. 31, 2023
Leases [Abstract]
Short-Term (12 months or less)	$ 8.9	$ 8.5
Long-Term	38.8	33.3
Lease receivables	$ 47.7	$ 41.8
Sales-type and operating lease revenue, percentage of net trade sales (less than)	1.00%	1.00%

X

- Definition

Sales-type and Operating Lease Revenue , Percentage of Net Sales

+ References

No definition available.

+ Details

Name:	see_SalesTypeAndOperatingLeaseRevenuePercentageOfNetSales
Namespace Prefix:	see_
Data Type:	dtr-types1:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Sales-Type Lease, Lease Receivable, Current

+ References

No definition available.

+ Details

Name:	see_SalesTypeLeaseLeaseReceivableCurrent
Namespace Prefix:	see_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Sales-type Lease, Lease Receivable, Noncurrent

+ References

No definition available.

+ Details

Name:	see_SalesTypeLeaseLeaseReceivableNoncurrent
Namespace Prefix:	see_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- References

No definition available.

+ Details

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

X

- Definition

Present value of lease payments not yet received by lessor and amount expected to be derived from underlying asset, following end of lease term guaranteed by lessee or other third party unrelated to lessor, from sales-type lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479773/842-30-50-6

+ Details

Name:	us-gaap_SalesTypeLeaseLeaseReceivable
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant