CONSOLIDATED STATEMENTS OF COMPREHENSIVE EARNINGS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Statement of Comprehensive Income [Abstract]
Net earnings	$ 1,903	$ 1,613	$ 1,114
Other comprehensive earnings (losses):
Foreign currency translation adjustments – net of reclassification to earnings	(11)	(101)	(64)
Postretirement benefit plan losses – net of tax expense of $2, $6, and $0, respectively	(2)	(17)	0
Total other comprehensive earnings (losses)	(13)	(118)	(64)
Comprehensive earnings – net of tax	1,890	1,495	1,050
Less comprehensive earnings (losses) attributable to noncontrolling interest
Net earnings	74	66	71
Foreign currency translation adjustments	(21)	(34)	(29)
Total comprehensive earnings (losses) attributable to noncontrolling interest	53	32	42
Comprehensive earnings attributable to W.W. Grainger, Inc.	$ 1,837	$ 1,463	$ 1,008