XML 34 R44.htm IDEA: XBRL DOCUMENT
v3.2.0.727

Stock-Based Compensation - Additional Information (Detail) | 6 Months Ended
--- | ---
Jun. 30, 2015
Stock Option [Member] |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
Weighted average period for amortization of unrecognized compensation cost | 1 year 4 months 24 days
Stock Awards [Member] |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
Weighted average period for amortization of unrecognized compensation cost | 2 years 2 months 12 days
Stock Appreciation Rights (SARs) [Member] |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
Weighted average period for amortization of unrecognized compensation cost | 1 year 4 months 24 days

X
- Definition Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
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_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_EmployeeStockOptionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=scl_StockAwardsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_StockAppreciationRightsSARSMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |