Segment Information (Segment Information Of Revenues, Gross Profit And Operating Income) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 28, 2013	Jun. 29, 2012	Jun. 28, 2013	Jun. 29, 2012
Revenues	$ 688.3	$ 744.8	$ 1,349.3	$ 1,489.2
Segment gross profit	236.9	268.1	446.9	525.3
Segment operating income (loss)	64.5	72.3	103.9	139.4
Applications Products Group [Member]
Revenues	251.5	260.2	496.5	520.1
Segment gross profit	110.4	124.8	217.3	239.1
Segment operating income (loss)	22.2	36.6	49.7	62.0
Standard Products Group [Member]
Revenues	276.4	279.2	541.6	557.8
Segment gross profit	106.0	109.4	200.5	212.4
Segment operating income (loss)	65.3	67.1	122.9	129.2
SANYO Semiconductor Products Group [Member]
Revenues	160.4	205.4	311.2	411.3
Segment gross profit	20.5	33.9	29.1	73.8
Segment operating income (loss)	$ (23.0)	$ (31.4)	$ (68.7)	$ (51.8)