Consolidated Statements Of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Income Statement [Abstract]
Sales	$ 1,102,649	$ 879,939	$ 2,693,358	$ 2,309,135
Cost of sales	767,864	620,154	1,889,587	1,637,638
Gross profit	334,785	259,785	803,771	671,497
Operating expenses:
Selling and marketing	78,810	57,211	195,541	152,899
Research and development	37,010	32,352	103,064	94,034
General and administrative	49,343	36,882	129,597	104,641
Total operating expenses	165,163	126,445	428,202	351,574
Income from financial services	11,671	8,227	33,247	23,625
Operating income	181,293	141,567	408,816	343,548
Non-operating expense (income):
Interest expense	1,520	1,465	4,364	4,443
Equity in loss of other affiliates	631	0	1,629	0
Other (income), net	(2,576)	(3,989)	(6,274)	(6,356)
Income before income taxes	181,718	144,091	409,097	345,461
Provision for income taxes	64,797	49,746	136,708	121,215
Income (Loss) from Continuing Operations Attributable to Parent	116,921	94,345	272,389	224,246
Loss from discontinued operations, net of tax	(3,777)	0	(3,777)	0
Net income from continuing operations	$ 113,144	$ 94,345	$ 268,612	$ 224,246
Basic net income per share:
Continuing operations (in dollars per share)	$ 1.69	$ 1.37	$ 3.95	$ 3.26
Loss from discontinued operations (in dollars per share)	$ (0.05)	$ 0.00	$ (0.05)	$ 0.00
Basic net income per share (in dollars per share)	$ 1.64	$ 1.37	$ 3.90	$ 3.26
Diluted net income per share:
Continuing operations (in dollars per share)	$ 1.64	$ 1.33	$ 3.84	$ 3.16
Loss from discontinued operations (in dollars per share)	$ (0.05)	$ 0.00	$ (0.05)
Diluted net income per share (in dollars per share)	$ 1.59	$ 1.33	$ 3.79	$ 3.16
Weighted average shares outstanding:
Basic (in shares)	69,179	68,692	68,946	68,761
Diluted (in shares)	71,186	70,883	70,901	70,956