XML 44 R34.htm IDEA: XBRL DOCUMENT
v3.21.2

GOODWILL AND OTHER INTANGIBLE ASSETS - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Mar. 31, 2020 | Sep. 30, 2021 | Sep. 30, 2020 | Dec. 31, 2020
Segment Reporting Information [Line Items] |  |  |  |  |  |
Impairment charges |  |  | $ (58) |  |  | $ (58)
Impairments | $ 0 | $ 0 |  | $ 0 | $ 0 |
Segment Balances Before Intersegment Eliminations and Consolidation Reconciling Items |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Cumulative goodwill impairments |  |  |  | 137 |  |
Other |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Cumulative goodwill impairments |  |  |  | 105 |  |
Impairment charges |  |  |  |  |  | (58)
High-Touch Solutions N.A | Segment Balances Before Intersegment Eliminations and Consolidation Reconciling Items |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Cumulative goodwill impairments |  |  |  | $ 32 |  |
Impairment charges |  |  |  |  |  | 0
Endless Assortment | Segment Balances Before Intersegment Eliminations and Consolidation Reconciling Items |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Impairment charges |  |  |  |  |  | $ 0

X
- Definition Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination, divested businesses and corresponding impairment amounts are not recognized in this concept + References No definition available. + Details
Name: | gww_GoodwillImpairmentLossExcludingDivestedBusinesses
Namespace Prefix: | gww_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Total loss recognized during the period from the impairment of goodwill plus the loss recognized in the period resulting from the impairment of the carrying amount of intangible assets, other than goodwill. + References No definition available. + Details
Name: | us-gaap_GoodwillAndIntangibleAssetImpairment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13854-109267 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13777-109266 + Details
Name: | us-gaap_GoodwillImpairmentLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

X
- Details
Name: | srt_ConsolidationItemsAxis=us-gaap_OperatingSegmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ConsolidationItemsAxis=us-gaap_MaterialReconcilingItemsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=gww_HighTouchSolutionsNAMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=gww_EndlessAssortmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |