General (Components Of Other Comprehensive Income) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 28, 2012	Sep. 30, 2011	Sep. 28, 2012	Sep. 30, 2011
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Foreign currency translation adjustments, Before income tax amount	$ 193,505	$ (490,923)	$ 93,398	$ (125,194)
Foreign currency translation adjustments, Income tax expense	0	0	0	0
Foreign currency translation adjustments, Net of income tax amount	193,505	(490,923)	93,398	(125,194)
Pension and postretirement plan benefit adjustment, Before income tax	12,700	7,500	33,000	22,300
Pension and postretirement plan benefit adjustment, Income tax expense	(4,641)	(2,638)	(11,997)	(7,860)
Pension and postretirement plan benefit adjustment, Net of income tax amount	8,059	4,862	21,003	14,440
Unrealized gain (loss) on available-for-sale securities, Before income tax amount	37,207	(95,086)	115,856	(53,972)
Unrealized gain (loss) on available-for-sale securities, Income tax expense	(13,952)	33,280	(43,446)	18,890
Unrealized gain (loss) on available-for-sale securities, Net of income tax amount	23,200	(61,900)	72,400	(35,100)
Total other comprehensive income (loss), Before income tax amount	243,412	(578,509)	242,254	(156,866)
Total other comprehensive income (loss), Income tax expense	(18,593)	30,642	(55,443)	11,030
Total other comprehensive income (loss), Net of income tax amount	$ 224,800	$ (547,900)	$ 186,800	$ (145,900)