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v3.24.3

Other Matter - Additional Information (Detail) - USD ($) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2024
Other Matter [line Items] |  |
Pre tax charge | $ 3,300,000 | $ 6,800,000

X
- Definition Other matter. + References No definition available. + Details
Name: | scl_OtherMatterLineItems
Namespace Prefix: | scl_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Pre tax charge. + References No definition available. + Details
Name: | scl_PreTaxCharge
Namespace Prefix: | scl_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration