Product Warranties (Schedule Of Product Warranty Liability) (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 29, 2014	Jun. 30, 2013
Movement in Standard Product Warranty Accrual [Roll Forward]
Balance as of beginning of the period	$ 48,754	$ 46,659
Provision for warranty liability made during the period	27,455	33,586
Settlements made during the period	(34,275)	(34,070)
Balance at end of period	$ 41,934	$ 46,175