Intangibles and Goodwill - Additional Information (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Goodwill [Line Items]
Portion of acquisition price attributable to intangible assets	$ 0	$ 151,083,000	$ 0
Amortization expense on intangible assets	364,700,000	341,800,000	285,300,000
All Technology Companies | Patents
Goodwill [Line Items]
Number of Companies Who Also Acquired Assets		3
Payments to acquire intangible asset portfolio		450,000,000
EMC | Patents
Goodwill [Line Items]
Payments to acquire intangible asset portfolio		112,500,000
Assigned useful life (in years)	10 years
VMware Roche Transaction
Goodwill [Line Items]
Payments to acquire ground lease		225,000,000
Portion of acquisition price attributable to property, plant and equipment, net		73,900,000
VMware Roche Transaction | Leasehold interest
Goodwill [Line Items]
Portion of acquisition price attributable to intangible assets		151,100,000
Intangible Assets, Net [Member] | VMware Roche Transaction | Leasehold interest
Goodwill [Line Items]
Portion of acquisition price attributable to intangible assets		$ 146,800,000