Segments (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
Net revenues:
Total net revenues	$ 1,185.6		$ 1,118.3		$ 3,395.5		$ 3,224.6
Segment contribution margin:
Total segment contribution margin	519.3		455.9		1,441.5		1,268.1
Corporate unallocated expenses	(284.9)	[1]	(266.5)	[1]	(823.9)	[1]	(794.2)	[1]
Amortization of purchased intangible assets	(7.6)	[2]	(9.0)	[2]	(22.8)	[2]	(25.1)	[2]
Share-based compensation expense	(69.3)		(59.1)		(180.7)		(186.0)
Share-based payroll tax expense	(0.4)		(0.1)		(4.5)		(1.0)
Restructuring and other charges	(12.1)	[3]	(83.4)	[3]	(28.6)	[3]	(88.6)	[3]
Acquisition and litigation charges	0		(0.3)		(10.5)		(1.3)
Other unallocated expense	0		5.3		0		5.3
Operating income	145.0		42.8		370.5		177.2
Other expense, net	(7.5)		(4.0)		(30.2)		(25.6)
Income before income taxes	137.5		38.8		340.3		151.6
PSD segment
Net revenues:
Total net revenues	939.3		828.5		2,664.5		2,404.4
Segment contribution margin:
Total segment contribution margin	424.1		318.9		1,151.7		910.9
Depreciation by Segment [Abstract]
Depreciation expense	26.8		29.4		88.7		84.8
SSD segment
Net revenues:
Total net revenues	246.3		289.8		731.0		820.2
Segment contribution margin:
Total segment contribution margin	95.2		137.0		289.8		357.2
Depreciation by Segment [Abstract]
Depreciation expense	$ 7.0		$ 9.6		$ 23.6		$ 28.0

[1] Amount includes unallocated costs for global functions such as sales, marketing, and general and administrative.

[2] Amount includes amortization expense of purchased intangible assets reported in cost of revenues and operating expenses.

[3] Amount includes restructuring and other charges reported in cost of revenues and operating expenses.