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Other Expense (Income) - Narrative (Details) - option_plan | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
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Other Income and Expenses [Abstract] |  |  |
Number of foreign currency option outstanding | 0 | 0 | 0
Number of foreign forward contracts outstanding | 0 | 0 | 0

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- Definition Number of foreign currency option outstanding. + References No definition available. + Details
Name: | shw_NumberOfForeignCurrencyOptionOutstanding
Namespace Prefix: | shw_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of foreign forward contracts outstanding. + References No definition available. + Details
Name: | shw_NumberOfForeignForwardContractsOutstanding
Namespace Prefix: | shw_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_OtherIncomeAndExpensesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration