Consolidated Statements Of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Apr. 30, 2012	Apr. 30, 2011	Apr. 30, 2012	Apr. 30, 2011
Consolidated Statements Of Income [Abstract]
Net sales	$ 344,589	$ 325,301	$ 670,649	$ 618,530
Cost of sales	123,893	123,539	239,500	240,162
Gross profit	220,696	201,762	431,149	378,368
Selling, general and administrative expense	136,962	126,382	268,710	239,835
Research and development expense	13,031	10,390	24,455	20,117
Amortization of intangibles	5,263	4,734	10,816	9,447
Operating income	65,440	60,256	127,168	108,969
Interest expense	3,071	4,268	6,733	11,219
Loss on extinguishment of debt	0	16,487	0	16,487
Other income (expense), net	310	219	992	(514)
Income before income taxes	62,679	39,720	121,427	80,749
Provision for income taxes	7,758	4,360	11,883	6,174
Net income	$ 54,921	$ 35,360	$ 109,544	$ 74,575
Basic earnings per share	$ 1.15	$ 0.76	$ 2.30	$ 1.61
Diluted earnings per share	$ 1.12	$ 0.73	$ 2.24	$ 1.56
Number of shares used to compute earnings per share:
Basic	47,708	46,506	47,691	46,242
Diluted	49,007	48,239	48,941	47,807