Product Warranties (Tables)

6 Months Ended

Jan. 31, 2013

Schedule Of Changes In Product Warranty Reserves

Changes in our product warranty reserves are as follows:

	Three Months Ended January  31,				Six Months Ended January 31,
	2013		2012		2013		2012
Beginning balance	$	77,963	$	66,322	$	73,280	$	66,054
Provision		20,897		12,461		45,350		29,533
Payments		(19,650)		(16,763)		(39,420)		(33,567)
Ending balance	$	79,210	$	62,020	$	79,210	$	62,020