Income Taxes (Details 1) (USD $) In Millions, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Components of deferred tax assets and liabilities
Tax credits	$ 60.0	$ 47.6
Inventory, other reserves, and accruals	104.1	203.1
Capitalized costs	5.3	6.7
Intangibles, net	75.8	61.8
Net operating loss	22.9	35.3
Share-based compensation	54.7	64.4
Other	45.7	70.3
Valuation allowance	(10.8)	(10.8)
Total deferred tax assets	357.7	478.4
Purchased intangible assets	(384.8)	(446.1)
Unrealized gain on investments and cumulative translation adjustment	(3.5)	(6.6)
Inventory	(76.8)	0
Depreciation, amortization and other	(133.1)	(114.4)
Total deferred tax liabilities	$ (598.2)	$ (567.1)