XML 109 R98.htm IDEA: XBRL DOCUMENT
v3.24.0.1

Postretirement Benefit Plans - Defined Contribution Plans - Additional Information (Detail) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Defined Contribution Plan Disclosure [Line Items] |  |  |
Supplemental plan liability balances | $ 450,000 | $ 446,000 |
Defined contribution plan expense | $ 10,949,000 | 13,832,000 | $ 13,215,000
Percentage of union and non-union employees eligible for either statutory or Company's sponsored profit sharing contributions | 85.00% |  |
Percentage of us based union and non-union employees eligible for either statutory or Company's sponsored profit sharing contributions | 100.00% |  |
Statutory Plans [Member] |  |  |
Defined Contribution Plan Disclosure [Line Items] |  |  |
Defined contribution plan expense | $ 480,000 | 421,000 | $ 219,000
Defined Contribution Plans [Member] |  |  |
Defined Contribution Plan Disclosure [Line Items] |  |  |
Balance of trust assets | $ 450,000 | $ 376,000 |

X
- Definition Balance of the trust assets. + References No definition available. + Details
Name: | scl_BalanceOfTrustAssets
Namespace Prefix: | scl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Percentage of US based union and non union employees eligible for either Statutory or companys sponsored profit sharing contributions. + References No definition available. + Details
Name: | scl_PercentageOfUSBasedUnionAndNonUnionEmployeesEligibleForEitherStatutoryOrCompanysSponsoredProfitSharingContributions
Namespace Prefix: | scl_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of union and non-union employees eligible for either statutory or Company's sponsored profit sharing contributions. + References No definition available. + Details
Name: | scl_PercentageOfUnionAndNonUnionEmployeesEligibleForEitherStatutoryOrCompanysSponsoredProfitSharingContributions
Namespace Prefix: | scl_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Supplemental executive retirement plan liability. + References No definition available. + Details
Name: | scl_SupplementalExecutiveRetirementPlanLiability
Namespace Prefix: | scl_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of cost for defined contribution plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 70 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480794/715-70-50-1 + Details
Name: | us-gaap_DefinedContributionPlanCostRecognized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- 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 Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 70 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480794/715-70-50-1 + Details
Name: | us-gaap_DefinedContributionPlanDisclosureLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_RetirementPlanNameAxis=scl_StatutoryPlansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RetirementPlanTypeAxis=us-gaap_PensionPlansDefinedBenefitMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |