XML 56 R46.htm IDEA: XBRL DOCUMENT
v3.4.0.3

Postretirement Benefit Plans - Defined Benefit Pension Plans - Additional Information (Detail) | 3 Months Ended
--- | ---
Mar. 31, 2016 USD ($)
U.S Plans [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Expected payment related to qualified plan | $ 0
Expected payment related to unqualified plan | 178,000
Payments related to non-qualified plans | 110,000
U.K Plans [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Expected payment related to qualified plan | 361,000
Employer contributions | $ 88,000

X
- Definition Expected current year payments to be made out of an entity's cash to participants of an unfunded nonqualified pension plan. + References No definition available. + Details
Name: | scl_ExpectedPaymentRelatedToNonqualifiedPlan
Namespace Prefix: | scl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Current year payments made out of an entity's cash to participants of an unfunded nonqualified pension plan. + References No definition available. + Details
Name: | scl_PaymentsRelatedToNonqualifiedPlans
Namespace Prefix: | scl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The increase in the fair value of plan assets from contributions made by the employer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b)(3) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanContributionsByEmployer
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 No definition available. + Details
Name: | us-gaap_DefinedBenefitPlanDisclosureLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of employer's best estimate of contributions expected to be paid to the plan in the current remaining fiscal period. + References No definition available. + Details
Name: | us-gaap_DefinedBenefitPlansEstimatedFutureEmployerContributionsInCurrentFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis=us-gaap_UnitedStatesPensionPlansOfUSEntityDefinedBenefitMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis=scl_UnitedKingdomDefinedBenefitPensionPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |