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ACCUMULATED OTHER COMPREHENSIVE EARNINGS (LOSSES) (AOCE) (Tables)

12 Months Ended

Dec. 31, 2020

Stockholders' Equity Note [Abstract]

Schedule of AOCE

The components of AOCE consisted of the following (in millions of dollars):

			Foreign Currency Translation and Other			Defined Postretirement Benefit Plan			Other Employment-related Benefit Plans						Total			Foreign Currency Translation Attributable to Noncontrolling Interests			AOCE Attributable to W.W. Grainger, Inc.
Balance at January 1, 2018, net of tax			$	(223)		$	73		$	(4)					$	(154)		$	(19)		$	(135)
Other comprehensive earnings (loss) before reclassifications, net of tax			(43)			4			(1)						(40)			3			(43)
Amounts reclassified to Net earnings			2			(10)			—						(8)			—			(8)
Amounts reclassified to Retained earnings			—			15			—						15			—			15
Net current period activity			$	(41)		$	9		$	(1)					$	(33)		$	3		$	(36)
Balance at December 31, 2018, net of tax			$	(264)		$	82		$	(5)					$	(187)		$	(16)		$	(171)
Other comprehensive earnings (loss) before reclassifications, net of tax			25			8			(3)						30			3			27
Amounts reclassified to Net earnings			1			(11)			—						(10)			—			(10)
Net current period activity			$	26		$	(3)		$	(3)					$	20		$	3		$	17
Balance at December 31, 2019, net of tax			$	(238)		$	79		$	(8)					$	(167)		$	(13)		$	(154)
Other comprehensive earnings (loss) before reclassifications, net of tax			36			33			—						69			12			57
Amounts reclassified to Net earnings			47			(11)			—						36			—			36
Net current period activity			83			22			—						105			12			93
Balance at December 31, 2020, net of tax			$	(155)		$	101		$	(8)					$	(62)		$	(1)		$	(61)

X

- Definition

Tabular disclosure of the components of accumulated other comprehensive income (loss).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 30
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6450520&loc=d3e32583-110901

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 14A
-URI http://asc.fasb.org/extlink&oid=121641772&loc=SL7669686-108580

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 30
-Section 45
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900

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- References

No definition available.

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