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Quarterly Results (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2016

Quarterly Financial Data [Abstract]

Quarterly operating data (unaudited)



	Fiscal 2016
	First Quarter				Second Quarter				Third Quarter				Fourth Quarter
Sales	$	2,096,150			$	2,176,689			$	2,220,955			$	2,099,302
Gross profit	1,097,579				1,127,179				1,170,026				1,114,227
Operating income	418,626				425,061				447,809				407,710
Net income	255,374				257,794				278,493				246,030
Earnings per share – basic ⁽¹⁾	$	2.63			$	2.69			$	2.93			$	2.62
Earnings per share – assuming dilution ⁽¹⁾	$	2.59			$	2.65			$	2.90			$	2.59



	Fiscal 2015
	First Quarter				Second Quarter				Third Quarter				Fourth Quarter
Sales	$	1,901,903			$	2,035,518			$	2,080,201			$	1,949,052
Gross profit	986,959				1,058,791				1,089,254				1,027,639
Operating income	350,373				385,768				415,260				362,620
Net income	212,864				233,508				266,268				218,576
Earnings per share – basic ⁽¹⁾	$	2.09			$	2.32			$	2.68			$	2.22
Earnings per share – assuming dilution ⁽¹⁾	$	2.06			$	2.29			$	2.64			$	2.19


⁽¹⁾	Earnings per share amounts are computed independently for each quarter and annual period. The quarterly earnings per share amounts may not sum to equal the full-year earnings per share amount.