Line Of Credit Facility, Extension Term

No definition available.

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Namespace Prefix:	shw_
Data Type:	xbrli:durationItemType
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- Definition

Line Of Credit Facility, Maximum Borrowing Capacity After Option Exercises

+ References

No definition available.

+ Details

Name:	shw_LineOfCreditFacilityMaximumBorrowingCapacityAfterOptionExercises
Namespace Prefix:	shw_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Line of Credit Facility, Number of Extension Options

+ References

No definition available.

+ Details

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

- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentTerm
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

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

- Definition

Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(19)(a))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16)(a)(1))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(13))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

Name:	us-gaap_ShortTermBorrowings
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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.

+ References

No definition available.

+ Details

Name:	us-gaap_ShortTermDebtLineItems
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Balance Type:	na
Period Type:	duration

- Definition

Weighted average interest rate of short-term debt outstanding calculated at point in time.

+ References

+ Details

Name:	us-gaap_ShortTermDebtWeightedAverageInterestRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	us-gaap_ShortTermDebtTypeAxis=shw_DomesticCommercialPaperProgramMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_CommercialPaperMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=shw_July2018FiveYearCreditAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_LineOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_LetterOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=shw_ForeignProgramsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=shw_September2017FiveYearCreditAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ShortTermDebtTypeAxis=us-gaap_LineOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ShortTermDebtTypeAxis=us-gaap_LetterOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=shw_May2016FiveYearCreditAgreementMember
Namespace Prefix:
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Debt - Short-term Borrowings (Details)			1 Months Ended
Debt - Short-term Borrowings (Details)	Jul. 19, 2018 USD ($) option	May 06, 2016	Sep. 30, 2017	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Short Term Debt [Line Items]
Short-term borrowings outstanding				$ 328,403,000	$ 633,731,000	$ 40,739,000
Domestic Commercial Paper Program \| Commercial Paper
Short Term Debt [Line Items]
Short-term borrowings outstanding				291,400,000	274,800,000	0
Five Year Credit Agreement, July 2018 \| Line of Credit
Short Term Debt [Line Items]
Debt instrument term	5 years
Maximum borrowing capacity	$ 2,000,000,000
Number of extension options \| option	2
Extension term	1 year
Maximum borrowing capacity after exercising extension option	$ 2,750,000,000
Five Year Credit Agreement, July 2018 \| Letter of Credit
Short Term Debt [Line Items]
Maximum borrowing capacity	$ 250,000,000
Foreign Programs
Short Term Debt [Line Items]
Short-term borrowings outstanding				$ 37,000,000
Weighted average interest rate				9.30%
Five Year Credit Agreement, September 2017 \| Line of Credit
Short Term Debt [Line Items]
Maximum borrowing capacity				$ 625,000,000
Five Year Credit Agreement, September 2017 \| Letter of Credit
Short Term Debt [Line Items]
Debt instrument term			5 years
Five Year Credit Agreement, May 2016 \| Letter of Credit
Short Term Debt [Line Items]
Debt instrument term		5 years
Maximum borrowing capacity				875,000,000
Short-term borrowings outstanding				$ 0	$ 350,000,000	$ 0