Quarterly Data (Tables)

12 Months Ended

Dec. 31, 2014

Quarterly Financial Information Disclosure [Abstract]

Quarterly Data [Table Text Block]

					Continuing Operations						Net Earnings
Quarter	Revenue		Gross Profit		Earnings		Per Share - Basic		Per Share - Diluted		Net Earnings		Per Share - Basic		Per Share - Diluted
2014
First	$	1,802,570	$	707,859	$	170,041	$	1.00	$	0.99	$	160,138	$	0.94	$	0.93
Second	1,962,636		768,100		210,581		1.26		1.25		213,959		1.29		1.27
Third	2,009,575		774,422		225,683		1.36		1.34		231,844		1.40		1.38
Fourth	1,977,947		723,868		171,835		1.04		1.03		169,294		1.03		1.02
	$	7,752,728	$	2,974,249	$	778,140	4.67		4.61		$	775,235	4.65		4.59
2013
First	$	1,681,540	$	653,847	$	160,267	$	0.92	$	0.91	$	210,003	$	1.21	$	1.20
Second	1,836,981		720,994		247,988		1.45		1.43		330,049		1.93		1.91
Third	1,850,653		724,041		217,045		1.27		1.26		269,114		1.58		1.56
Fourth	1,785,922		679,709		172,227		1.01		1.00		193,963		1.14		1.13
	$	7,155,096	$	2,778,591	$	797,527	4.66		4.60		$	1,003,129	5.86		5.78