Consolidated Statements Of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Sales	$ 879,939	$ 729,861	$ 2,309,135	$ 1,874,980
Cost of sales	620,154	523,025	1,637,638	1,338,705
Gross profit	259,785	206,836	671,497	536,275
Operating expenses:
Selling and marketing	57,211	49,074	152,899	129,740
Research and development	32,352	25,750	94,034	74,248
General and administrative	36,882	28,049	104,641	92,632
Total operating expenses	126,445	102,873	351,574	296,620
Income from financial services	8,227	6,327	23,625	17,139
Operating income	141,567	110,290	343,548	256,794
Non-operating expense (income):
Interest expense	1,465	1,270	4,443	2,766
Other (income) expense, net	(3,989)	5,480	(6,356)	3,921
Income before income taxes	144,091	103,540	345,461	250,107
Provision for income taxes	49,746	35,903	121,215	86,431
Net income	$ 94,345	$ 67,637	$ 224,246	$ 163,676
Basic net income per share	$ 1.37	$ 0.98	$ 3.26	$ 2.38
Diluted net income per share	$ 1.33	$ 0.95	$ 3.16	$ 2.30
Weighted average shares outstanding:
Basic	68,692	68,937	68,761	68,761
Diluted	70,883	71,289	70,956	71,056