CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE EARNINGS (unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Income Statement [Abstract]
Revenue	$ 2,039,573	$ 1,954,614
Cost of goods and services	1,262,951	1,208,534
Gross profit	776,622	746,080
Selling and administrative expenses	484,421	453,989
Operating earnings	292,201	292,091
Interest expense, net	30,244	30,031
Other expense, net	(4,719)	1,785
Earnings before provision for income taxes and discontinued operations	266,676	260,275
Provision for income taxes	69,687	73,866
Earnings from continuing operations	196,989	186,409
Earnings from discontinued operations, net	13,014	9,654
Net earnings	210,003	196,063
Comprehensive earnings	$ 178,724	$ 237,305
Earnings per share from continuing operations [Abstract]
Earnings from continuing operations (in dollars per basic share)	$ 1.14	$ 1.01
Earnings from continuing operations (in dollars per diluted share)	$ 1.12	$ 1.00
Earnings per share from discontinued operations: [Abstract]
Earnings (loss) from discontinued operations, net (in dollars per basic share)	$ 0.08	$ 0.05
Earnings (loss) from discontinued operations, net (in dollars per diluted share)	$ 0.07	$ 0.05
Net earnings per share: [Abstract]
Net earnings (in dollars per basic share)	$ 1.21	$ 1.07
Net earnings (in dollars per diluted share)	$ 1.20	$ 1.05
Dividends paid per common share (in dollars per share)	$ 0.35	$ 0.315