Goodwill and Purchased Intangible Assets (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
Goodwill [Line Items]
Purchased intangible assets, net	$ 143,774,000		$ 143,774,000		$ 123,114,000
Goodwill [Roll Forward]
Goodwill, beginning of period			3,928,144,000
Goodwill acquired			59,600,000
Goodwill, end of period	3,987,707,000		3,987,707,000
Goodwill, Translation and Purchase Accounting Adjustments			0
Goodwill, Impairment Loss	0	0	0	0
PSD Segment [Member]
Goodwill [Roll Forward]
Goodwill, beginning of period			1,795,600,000
Goodwill acquired			0
Goodwill, end of period	1,795,600,000		1,795,600,000
SSD Segment [Member]
Goodwill [Roll Forward]
Goodwill, beginning of period			2,132,500,000
Goodwill acquired			59,600,000
Goodwill, end of period	$ 2,192,100,000		$ 2,192,100,000