CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE EARNINGS (unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Income Statement [Abstract]
Revenue	$ 2,156,508	$ 1,994,970	$ 4,219,872	$ 3,807,048
Cost of goods and services	1,338,911	1,218,974	2,621,951	2,319,301
Gross profit	817,597	775,996	1,597,921	1,487,747
Selling and administrative expenses	494,050	448,399	974,930	901,826
Operating earnings	323,547	327,597	622,991	585,921
Interest expense, net	29,717	28,157	59,744	56,475
Other expense, net	142	1,477	2,764	2,665
Earnings before provision for income taxes and discontinued operations	293,688	297,963	560,483	526,781
Provision for income taxes	80,786	58,765	150,754	112,792
Earnings from continuing operations	212,902	239,198	409,729	413,989
(Loss) earnings from discontinued operations, net	1,199	10,571	435	30,685
Net earnings	214,101	249,769	410,164	444,674
Comprehensive earnings	$ 120,514	$ 269,404	$ 357,819	$ 535,970
Earnings per share from continuing operations [Abstract]
Earnings from continuing operations (in dollars per basic share)	$ 1.16	$ 1.28	$ 2.23	$ 2.22
Earnings from continuing operations (in dollars per diluted share)	$ 1.15	$ 1.26	$ 2.20	$ 2.18
Earnings per share from discontinued operations: [Abstract]
Earnings (loss) from discontinued operations, net (in dollars per basic share)	$ 0.01	$ 0.06	$ 0.00	$ 0.16
Earnings (loss) from discontinued operations, net (in dollars per diluted share)	$ 0.01	$ 0.06	$ 0.00	$ 0.16
Net earnings per share: [Abstract]
Net earnings (in dollars per basic share)	$ 1.17	$ 1.34	$ 2.23	$ 2.38
Net earnings (in dollars per diluted share)	$ 1.15	$ 1.32	$ 2.20	$ 2.34
Dividends paid per common share (in dollars per share)	$ 0.315	$ 0.275	$ 0.63	$ 0.55