Debt instruments maturity year.

No definition available.

Name:	scl_DebtInstrumentsMaturityYear
Namespace Prefix:	scl_
Data Type:	xbrli:gYearItemType
Balance Type:	na
Period Type:	duration

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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Period Type:	instant

- 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.

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+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

+ References

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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt classified as current. Excludes lease obligation.

+ References

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+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt classified as noncurrent. Excludes lease obligation.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Details

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Namespace Prefix:
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- Details

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Period Type:

- Details

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- Details

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Debt - Debt (Detail) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
Debt - Debt (Detail) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024	Jun. 30, 2024
Debt Instrument [Line Items]
Total debt	$ 658,030	$ 625,439
Less current maturities	274,791	292,807
Long-term debt	383,239	332,632
Unsecured private placement 3.95% note [Member]
Debt Instrument [Line Items]
Total debt	$ 42,778	$ 42,759
Debt instrument interest rate percentage	3.95%	3.95%
Unsecured private placement 3.95% note [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Maturity Dates	2025	2025
Unsecured private placement 3.95% note [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Maturity Dates	2027	2027
Unsecured private placement 3.86% note [Member]
Debt Instrument [Line Items]
Total debt	$ 0	$ 14,270
Debt instrument interest rate percentage	3.86%	3.86%
Unsecured private placement 3.86% note [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Maturity Dates	2025	2025
Unsecured private placement 2.30% note [Member]
Debt Instrument [Line Items]
Total debt	$ 29,934	$ 39,923
Debt instrument interest rate percentage	2.30%	2.30%
Unsecured private placement 2.30% note [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Maturity Dates	2025	2025
Unsecured private placement 2.30% note [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Maturity Dates	2028	2028
Unsecured private placement 2.37% note [Member]
Debt Instrument [Line Items]
Total debt	$ 39,929	$ 39,917
Debt instrument interest rate percentage	2.37%	2.37%
Unsecured private placement 2.37% note [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Maturity Dates	2025	2025
Unsecured private placement 2.37% note [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Maturity Dates	2028	2028
Unsecured private placement 2.73% note [Member]
Debt Instrument [Line Items]
Total debt	$ 99,939	$ 99,930
Debt instrument interest rate percentage	2.73%	2.73%
Unsecured private placement 2.73% note [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Maturity Dates	2025	2025
Unsecured private placement 2.73% note [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Maturity Dates	2031	2031
Unsecured private placement 2.83% note [Member]
Debt Instrument [Line Items]
Total debt	$ 74,944	$ 74,940
Debt instrument interest rate percentage	2.83%	6.17%	2.83%
Unsecured private placement 2.83% note [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Maturity Dates	2026	2026
Unsecured private placement 2.83% note [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Maturity Dates	2032	2032
Unsecured private placement 6.17% note [Member]
Debt Instrument [Line Items]
Total debt	$ 75,000	$ 0
Debt instrument interest rate percentage	6.17%
Unsecured private placement 6.17% note [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Maturity Dates	2029	2029
Unsecured private placement 6.17% note [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Maturity Dates	2033	2033
Debt of foreign subsidiaries Unsecured bank debt, foreign currency [Member]
Debt Instrument [Line Items]
Total debt	$ 2,506	$ 0
Maturity Dates	2025	2025
Revolving credit facility and term loan borrowing [Member]
Debt Instrument [Line Items]
Total debt	$ 293,000	$ 313,700
Revolving credit facility and term loan borrowing [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Maturity Dates	2025	2025