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SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED) (Tables)

12 Months Ended

Dec. 31, 2016

SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED) [Abstract]

Schedule of Quarterly Financial Information

A summary of selected quarterly information for 2016 and 2015 is as follows (in thousands of dollars, except for per share amounts):



		2016 Quarter Ended
		March 31				June 30				September 30				December 31				Total
Net sales		$	2,506,538			$	2,563,668			$	2,596,288			$	2,470,710			$	10,137,204
Cost of merchandise sold		1,461,485				1,523,609				1,556,536				1,481,017				6,022,647
Gross profit		1,045,053				1,040,059				1,039,752				989,693				4,114,557
Warehousing, marketing and administrative expenses		727,961				734,470				717,165				815,464				2,995,060
Operating earnings		317,092				305,589				322,587				174,229				1,119,497
Net earnings attributable to W.W. Grainger, Inc.		186,713				172,676				185,873				60,666				605,928
Earnings per share - basic		3.00				2.81				3.07				1.02				9.94
Earnings per share - diluted		$	2.98			$	2.79			$	3.05			$	1.01			$	9.87



		2015 Quarter Ended
		March 31				June 30				September 30				December 31				Total
Net sales		$	2,439,661			$	2,522,565			$	2,532,900			$	2,478,258			$	9,973,384
Cost of merchandise sold		1,345,918				1,449,133				1,471,021				1,475,884				5,741,956
Gross profit		1,093,743				1,073,432				1,061,879				1,002,374				4,231,428
Warehousing, marketing and administrative expenses		742,496				716,715				721,150				750,747				2,931,108
Operating earnings		351,247				356,717				340,729				251,627				1,300,320
Net earnings attributable to W.W. Grainger, Inc.		211,015				220,548				192,201				145,232				768,996
Earnings per share - basic		3.11				3.28				2.94				2.32				11.69
Earnings per share - diluted		$	3.07			$	3.25			$	2.92			$	2.30			$	11.58