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OTHER - Narrative (Details) - derivative_instrument | Mar. 31, 2021 | Mar. 31, 2020
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Other Income and Expenses [Abstract] |  |
Number of foreign currency option outstanding | 0 | 0
Number of foreign forward contracts outstanding | 0 | 0

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- Definition Number of foreign currency option outstanding. + References No definition available. + Details
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- Definition Number of foreign forward contracts outstanding. + References No definition available. + Details
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Namespace Prefix: | shw_
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Balance Type: | na
Period Type: | instant

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- References No definition available. + Details
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