Cost of benefits includes claims incurred and claims incurred but not reported under health care plans.

No definition available.

Name:	shw_CostOfBenefitsIncludesClaimsIncurredAndClaimsIncurredButNotReportedUnderHealthCarePlans
Namespace Prefix:	shw_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Defined benefit plan ultimate health care cost trend rate and prescription drug cost increase rate.

+ References

No definition available.

+ Details

Name:	shw_DefinedBenefitPlanUltimateHealthCareCostTrendRateAndPrescriptionDrugCostIncreaseRate
Namespace Prefix:	shw_
Data Type:	dtr-types1:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Health Care Plans [Abstract]

+ References

No definition available.

+ Details

Name:	shw_HealthCarePlansAbstract
Namespace Prefix:	shw_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of active employees entitled to receive benefits under health care plans.

+ References

No definition available.

+ Details

Name:	shw_NumberOfActiveEmployeesEntitledToReceiveBenefitsUnderHealthCarePlans
Namespace Prefix:	shw_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Number Of Defined Benefit Plans

+ References

No definition available.

+ Details

Name:	shw_NumberOfDefinedBenefitPlans
Namespace Prefix:	shw_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of foreign defined benefit pension plans unfunded.

+ References

No definition available.

+ Details

Name:	shw_NumberofForeignDefinedBenefitPensionPlansUnfundedOrUnderfunded
Namespace Prefix:	shw_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Retired employees entitled to receive postretirement benefits.

+ References

No definition available.

+ Details

Name:	shw_RetiredEmployeesEntitledToReceivePostretirementBenefits
Namespace Prefix:	shw_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of actuarial present value of benefits attributed to employee service rendered, excluding assumptions about future compensation level.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

+ Details

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

- Definition

Amount of actuarial present value of benefits attributed to service rendered by employee for defined benefit plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

+ Details

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

- References

No definition available.

+ Details

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

- Definition

Amount included in accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan expected to be recognized in net periodic benefit (cost) credit for fiscal year following most recent annual statement of financial position.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

+ Details

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

- Definition

Amount included in accumulated other comprehensive (income) loss for prior service cost (credit) expected to be recognized in net periodic benefit cost (credit) for fiscal year following most recent annual statement of financial position.

+ References

+ Details

Name:	us-gaap_DefinedBenefitPlanExpectedAmortizationOfPriorServiceCostCreditNextFiscalYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of benefit for defined benefit plan expected to be paid in five fiscal years after fifth fiscal year following current fiscal year.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

+ Details

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

- Definition

Amount of benefit for defined benefit plan expected to be paid in next fiscal year following current fiscal year.

+ References

+ Details

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

- Definition

Amount of benefit for defined benefit plan expected to be paid in fifth fiscal year following current fiscal year.

+ References

+ Details

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

- Definition

Amount of benefit for defined benefit plan expected to be paid in fourth fiscal year following current fiscal year.

+ References

+ Details

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

- Definition

Amount of benefit for defined benefit plan expected to be paid in third fiscal year following current fiscal year.

+ References

+ Details

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

- Definition

Amount of benefit for defined benefit plan expected to be paid in second fiscal year following current fiscal year.

+ References

+ Details

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

- Definition

Amount of contribution expected to be received by defined benefit plan from employer in next fiscal year following current fiscal year.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 18
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480482/715-20-55-18

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (g)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

+ Details

Name:	us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 17
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480482/715-20-55-17

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)(iv)(02)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)(ii)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)(iv)(01)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

Reference 6: http://www.xbrl.org/2003/role/exampleRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)(ii)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

Reference 7: http://www.xbrl.org/2003/role/exampleRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)(iv)(01)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

+ Details

Name:	us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of funded (unfunded) status of defined benefit plan, measured as difference between fair value of plan assets and benefit obligation. Includes, but is not limited to, overfunded (underfunded) status.

+ References

+ Details

Name:	us-gaap_DefinedBenefitPlanFundedStatusOfPlan
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Percentage of target investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan.

+ References

+ Details

Name:	us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of discretionary contributions made by an employer to a defined contribution plan.

+ References

No definition available.

+ Details

Name:	us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.

+ References

No definition available.

+ Details

Name:	us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_RetirementPlanSponsorLocationAxis=country_US
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_DefinedBenefitPlanEquitySecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_FixedIncomeSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=shw_OtherSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RetirementPlanSponsorLocationAxis=us-gaap_ForeignPlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RetirementPlanTypeAxis=us-gaap_DefinedBenefitPostretirementHealthCoverageMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RetirementPlanTypeAxis=us-gaap_PensionPlansDefinedBenefitMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RetirementPlanFundingStatusAxis=us-gaap_OverfundedPlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RetirementPlanFundingStatusAxis=us-gaap_UnfundedPlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RetirementPlanTypeAxis=us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Pension, Health Care and Other Postretirement Benefits - Narrative (Details) $ in Millions	12 Months Ended
	Dec. 31, 2024 USD ($) employee plan	Dec. 31, 2023 USD ($) employee	Dec. 31, 2022 USD ($) employee	Dec. 31, 2021 USD ($)
Domestic Defined Benefit Pension Plan \| Minimum \| Equity Securities
Expected defined benefit payments
Target allocation percentage of plan assets in equity securities	35.00%
Domestic Defined Benefit Pension Plan \| Minimum \| Fixed Income Securities
Expected defined benefit payments
Target allocation percentage of plan assets in equity securities	35.00%
Domestic Defined Benefit Pension Plan \| Minimum \| Other Securities
Expected defined benefit payments
Target allocation percentage of plan assets in equity securities	0.00%
Domestic Defined Benefit Pension Plan \| Maximum \| Equity Securities
Expected defined benefit payments
Target allocation percentage of plan assets in equity securities	65.00%
Domestic Defined Benefit Pension Plan \| Maximum \| Fixed Income Securities
Expected defined benefit payments
Target allocation percentage of plan assets in equity securities	65.00%
Domestic Defined Benefit Pension Plan \| Maximum \| Other Securities
Expected defined benefit payments
Target allocation percentage of plan assets in equity securities	5.00%
Foreign Defined Benefit Pension Plans \| Minimum \| Equity Securities
Expected defined benefit payments
Target allocation percentage of plan assets in equity securities	0.00%
Foreign Defined Benefit Pension Plans \| Minimum \| Fixed Income Securities
Expected defined benefit payments
Target allocation percentage of plan assets in equity securities	75.00%
Foreign Defined Benefit Pension Plans \| Minimum \| Other Securities
Expected defined benefit payments
Target allocation percentage of plan assets in equity securities	0.00%
Foreign Defined Benefit Pension Plans \| Maximum \| Equity Securities
Expected defined benefit payments
Target allocation percentage of plan assets in equity securities	20.00%
Foreign Defined Benefit Pension Plans \| Maximum \| Fixed Income Securities
Expected defined benefit payments
Target allocation percentage of plan assets in equity securities	100.00%
Foreign Defined Benefit Pension Plans \| Maximum \| Other Securities
Expected defined benefit payments
Target allocation percentage of plan assets in equity securities	10.00%
Postretirement Health Coverage
Health care plans
Number of active employees entitled to receive benefits under health care plans \| employee	32,283	31,327	30,009
Cost of benefits includes claims incurred and claims incurred but not reported under health care plans	$ 382.6	$ 363.2	$ 347.4
Defined Benefit Pension
Health care plans
Fair value of plan assets	354.7	356.5	232.1
Expected defined benefit payments
Expected cash payments, 2025	19.2
Expected cash payments, 2026	18.9
Expected cash payments, 2027	20.6
Expected cash payments, 2028	22.2
Expected cash payments, 2029	22.7
Expected cash payments, 2030-2034	139.2
Amortization of actuarial gains	(3.2)
Amortization of prior service cost (credit)	2.0
Defined Benefit Pension \| Domestic Defined Benefit Pension Plan
Health care plans
Contributions by company	103.5	97.8	88.9
Projected benefit obligation	95.3	102.1	91.7	$ 120.8
Fair value of plan assets	148.7	135.1	119.4	155.2
Excess (deficient) plan assets over projected benefit obligations	53.4	33.0	27.7
Accumulated benefit obligation	$ 94.2	100.5	90.3
Defined Benefit Pension \| Domestic Defined Benefit Pension Plan \| Minimum
Health care plans
Contributions by company (percentage)	2.00%
Defined Benefit Pension \| Domestic Defined Benefit Pension Plan \| Maximum
Health care plans
Contributions by company (percentage)	7.00%
Defined Benefit Pension \| Foreign Defined Benefit Pension Plans
Health care plans
Contributions by company	$ 20.6	19.5	19.4
Projected benefit obligation	243.0	257.8	230.4	362.7
Fair value of plan assets	231.3	246.7	223.6	328.4
Excess (deficient) plan assets over projected benefit obligations	$ (11.7)	(11.1)	(6.8)
Number of defined benefit plans \| plan	36
Accumulated benefit obligation	$ 221.7	236.4	209.3
Expected defined benefit payments
Estimated future employer contributions	5.8
Defined Benefit Pension \| Overfunded Plan \| Domestic Defined Benefit Pension Plan
Health care plans
Projected benefit obligation	95.3
Fair value of plan assets	148.7
Excess (deficient) plan assets over projected benefit obligations	53.4
Defined Benefit Pension \| Unfunded Plan \| Foreign Defined Benefit Pension Plans
Health care plans
Projected benefit obligation	88.3
Fair value of plan assets	20.5
Excess (deficient) plan assets over projected benefit obligations	$ (67.8)
Number of foreign defined benefit pension plans unfunded or underfunded \| plan	29
Accumulated benefit obligation	$ 73.9
Postretirement Benefits Other than Pensions
Health care plans
Projected benefit obligation	135.1	$ 147.2	$ 153.8	$ 276.4
Expected defined benefit payments
Expected cash payments, 2025	14.4
Expected cash payments, 2026	14.9
Expected cash payments, 2027	14.9
Expected cash payments, 2028	14.3
Expected cash payments, 2029	13.2
Expected cash payments, 2030-2034	48.2
Amortization of actuarial gains	(2.4)
Amortization of prior service cost (credit)	$ (14.2)
Number of retired employees entitled to receive postretirement benefits \| employee	3,354	3,367	3,409
Defined benefit plan ultimate health care cost trend rate and prescription drug cost increase rate (percentage)	4.50%