Statements of Consolidated Income and Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Income Statement [Abstract]
Net sales	$ 4,507,020	$ 3,279,462	$ 11,004,224	$ 9,073,011
Cost of goods sold	2,604,878	1,643,037	6,021,752	4,538,840
Gross profit	$ 1,902,142	$ 1,636,425	$ 4,982,472	$ 4,534,171
Percent to net sales	42.20%	49.90%	45.30%	50.00%
Selling, general and administrative expenses	$ 1,306,121	$ 1,050,081	$ 3,461,788	$ 3,095,250
Percent to net sales	29.00%	32.00%	31.50%	34.10%
Other general expense - net	$ 4,109	$ 813	$ 6,160	$ 21,100
Amortization	83,711	8,183	118,799	19,549
Interest expense	91,593	44,100	174,017	110,710
Interest and net investment income	(2,448)	(1,647)	(6,819)	(3,086)
Other income - net	(8,666)	(725)	(14,803)	(551)
Income from continuing operations before income taxes	427,722	535,620	1,243,330	1,291,199
Income taxes	111,116	148,887	326,921	361,526
Net income from continuing operations	316,606	386,733	916,409	929,673
Loss from discontinued operations (see Note 3)
Income taxes			41,540
Net loss from discontinued operations	0	0	(41,540)	0
Net income	$ 316,606	$ 386,733	$ 874,869	$ 929,673
Basic net income per common share
Continuing operations (in dollars per share)	$ 3.40	$ 4.20	$ 9.88	$ 10.13
Discontinued operations (in dollars per share)	0.00	0.00	(0.45)	0.00
Net income per common share (in dollars per share)	3.40	4.20	9.43	10.13
Diluted net income per common share
Continuing operations (in dollars per share)	3.33	4.08	9.67	9.85
Discontinued operations (in dollars per share)	0.00	0.00	(0.44)	0.00
Net income per common share (in dollars per share)	$ 3.33	$ 4.08	$ 9.23	$ 9.85
Average shares outstanding - basic (in shares)	92,988,118	91,992,854	92,793,275	91,752,482
Average shares and equivalents outstanding - diluted (in shares)	95,207,884	94,771,807	94,817,669	94,421,190
Comprehensive income	$ 383,541	$ 390,601	$ 962,919	$ 858,547