CONDENSED CONSOLIDATED STATEMENTS OF EARNINGS (unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Revenue	$ 2,006,275	$ 1,707,763	$ 5,812,998	$ 5,016,381
Cost of goods and services	1,261,942	1,075,975	3,658,045	3,164,116
Gross profit	744,333	631,788	2,154,953	1,852,265
Selling, general and administrative expenses	470,516	421,042	1,439,852	1,301,901
Operating earnings	273,817	210,746	715,101	550,364
Interest Expense	35,453	33,789	108,794	100,886
Interest Income	(1,761)	(795)	(6,679)	(4,021)
Gain on sale of businesses	0	0	(90,093)	(12,061)
Other expense (income), net	2,697	(3,424)	2,888	(7,739)
Earnings before provision for income taxes	237,428	181,176	700,191	473,299
Provision for income taxes	58,516	51,092	184,974	125,569
Net earnings	$ 178,912	$ 130,084	$ 515,217	$ 347,730
Net earnings per share: [Abstract]
Net earnings (in dollars per basic share)	$ 1.15	$ 0.84	$ 3.31	$ 2.24
Net earnings (in dollars per diluted share)	$ 1.14	$ 0.83	$ 3.27	$ 2.22
Weighted average shares outstanding: [Abstract]
Weighted average shares outstanding - basic	155,757,000	155,300,000	155,668,000	155,182,000
Weighted average shares outstanding - diluted	157,555,000	156,798,000	157,565,000	156,562,000
Dividends paid per common share (in dollars per share)	$ 0.47	$ 0.44	$ 1.35	$ 1.28