XML 83 R69.htm IDEA: XBRL DOCUMENT
v3.20.4

Leases - Additional Information (Detail) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 USD ($) Country | Dec. 31, 2019 USD ($)
Operating Leased Assets [Line Items] |  |
Operating lease assets (Note 7) | $ 62,421,000 | $ 38,386,000
Operating lease, liability | $ 62,595,000 |
Number of countries leases reside | Country | 5 |
Percentage of value of leases property | 98.00% |
Increments term | 5 years |
Minimum [Member] |  |
Operating Leased Assets [Line Items] |  |
Lessee, operating lease, term of contract | 1 year |
Maximum [Member] |  |
Operating Leased Assets [Line Items] |  |
Lessee, operating lease, term of contract | 10 years |
Railcars [Member] |  |
Operating Leased Assets [Line Items] |  |
Percentage of lease asset categories | 26.00% |
Real Estate [Member] |  |
Operating Leased Assets [Line Items] |  |
Percentage of lease asset categories | 56.00% |
Real Estate [Member] | Minimum [Member] |  |
Operating Leased Assets [Line Items] |  |
Lessee, operating lease, term of contract | 1 year |
Real Estate [Member] | Maximum [Member] |  |
Operating Leased Assets [Line Items] |  |
Lessee, operating lease, term of contract | 50 years |
ASC 842 [Member] |  |
Operating Leased Assets [Line Items] |  |
Operating lease assets (Note 7) | $ 42,400,000 |
Operating lease, liability | $ 42,400,000 |

X
- Definition Increments term. + References No definition available. + Details
Name: | scl_IncrementsTerm
Namespace Prefix: | scl_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of countries leases reside + References No definition available. + Details
Name: | scl_NumberOfCountriesLeasesReside
Namespace Prefix: | scl_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of lease asset categories + References No definition available. + Details
Name: | scl_PercentageOfLeaseAssetCategories
Namespace Prefix: | scl_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of value of leases property. + References No definition available. + Details
Name: | scl_PercentageOfValueOfLeasesProperty
Namespace Prefix: | scl_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918673-209980 + Details
Name: | us-gaap_LesseeOperatingLeaseTermOfContract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

X
- Definition Present value of lessee's discounted obligation for lease payments from operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977 + Details
Name: | us-gaap_OperatingLeaseLiability
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of lessee's right to use underlying asset under operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977 + Details
Name: | us-gaap_OperatingLeaseRightOfUseAsset
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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_OperatingLeasedAssetsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=scl_RailcarsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=us-gaap_RealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AdjustmentsForNewAccountingPronouncementsAxis=us-gaap_AccountingStandardsUpdate201602Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |