CONDENSED CONSOLIDATED STATEMENTS OF EARNINGS (unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Income Statement [Abstract]
Revenue	$ 1,686,345	$ 1,758,628	$ 3,308,618	$ 3,474,129
Cost of goods and services	1,055,132	1,104,060	2,088,141	2,192,402
Gross profit	631,213	654,568	1,220,477	1,281,727
Selling and administrative expenses	437,411	402,695	880,859	837,329
Operating earnings	193,802	251,873	339,618	444,398
Interest expense, net	32,157	31,988	63,871	64,025
Other income, net	(2,854)	(1,256)	(16,376)	(5,443)
Earnings before provision for income taxes and discontinued operations	164,499	221,141	292,123	385,816
Provision for income taxes	46,209	65,507	74,477	112,992
Earnings from continuing operations	118,290	155,634	217,646	272,824
Earnings from discontinued operations, net	0	176,762	0	269,082
Net earnings	$ 118,290	$ 332,396	$ 217,646	$ 541,906
Earnings per share from continuing operations [Abstract]
Earnings from continuing operations (in dollars per basic share)	$ 0.76	$ 0.98	$ 1.40	$ 1.70
Earnings from continuing operations (in dollars per diluted share)	0.76	0.97	1.39	1.69
Earnings per share from discontinued operations: [Abstract]
Earnings from discontinued operations, net (in dollars per basic share)	0.00	1.11	0.00	1.68
Earnings from discontinued operations, net (in dollars per diluted share)	0.00	1.10	0.00	1.66
Net earnings per share: [Abstract]
Net earnings (in dollars per basic share)	0.76	2.10	1.40	3.38
Net earnings (in dollars per diluted share)	$ 0.76	$ 2.07	$ 1.39	$ 3.35
Weighted average shares outstanding: [Abstract]
Weighted average shares outstanding - basic	155,180,000	158,640,000	155,122,000	160,137,000
Weighted average shares outstanding - diluted	156,595,000	160,398,000	156,414,000	161,876,000
Dividends paid per common share (in dollars per share)	$ 0.42	$ 0.40	$ 0.84	$ 0.80