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v3.22.0.1

Other Expense (Income) - Narrative (Details) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2021 USD ($) option_plan | Dec. 31, 2021 USD ($) option_plan | Dec. 31, 2020 USD ($) option_plan | Dec. 31, 2019 USD ($) option_plan
Tax Credit Carryforward [Line Items] |  |  |  |
Number of foreign currency option outstanding | option_plan | 0 | 0 | 0 | 0
Number of foreign forward contracts outstanding | option_plan | 0 | 0 | 0 | 0
Gain on indirect tax credits | $ |  | $ 0.0 | $ 0.0 | $ 38.7
Brazil |  |  |  |
Tax Credit Carryforward [Line Items] |  |  |  |
Gain on indirect tax credits | $ | $ (33.5) |  |  |

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

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- Definition Number of foreign forward contracts outstanding. + References No definition available. + Details
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Namespace Prefix: | shw_
Data Type: | xbrli:integerItemType
Balance Type: | na
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- Definition Tax Credit (Expense), Indirect + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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

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- Details
Name: | srt_StatementGeographicalAxis=country_BR
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |