XML 48 R39.htm IDEA: XBRL DOCUMENT
v3.22.1

CONTINGENCIES AND LEGAL MATTERS (Details) |  | 3 Months Ended
--- | --- | ---
Apr. 01, 2021 plantiff | Dec. 31, 2019 plantiff death
Commitments and Contingencies Disclosure [Abstract] |  |
Number of plaintiffs | plantiff | 24 | 186
Number of deaths | death |  | 1

X
- Definition Loss Contingency, Number of Deaths + References No definition available. + Details
Name: | gww_LossContingencyNumberOfDeaths
Namespace Prefix: | gww_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of plaintiffs that have filed claims pertaining to a loss contingency. + References No definition available. + Details
Name: | us-gaap_LossContingencyNumberOfPlaintiffs
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration