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Commitments and Contingencies - Additional Information (Detail) (USD $)
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1 Months Ended | 12 Months Ended | 1 Months Ended | 1 Months Ended | 12 Months Ended | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Jul. 31, 2012
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Jan. 31, 2011
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Dec. 31, 2012
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Dec. 31, 2011
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Dec. 31, 2010
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Jul. 31, 2012
Prejudgment Interest
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Dec. 31, 2012
Eolas Technologies Incorporated
Patent
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Dec. 31, 2009
Nazomi Communications, Inc.
Patent
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Jul. 31, 2010
Positive Technologies Inc.
Patent
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Sep. 30, 2012
Olympic Developments AG, LLC
Patent
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Sep. 30, 2011
LVL Patent Group, LLC
Patent
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Sep. 30, 2011
Parallel Iron, LLC
Additional patents
Patent
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Sep. 30, 2011
Droplets, Inc.
Patent
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Jul. 31, 2012
Technology Properties Limited
Additional patents
Patient
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Jul. 31, 2011
GPNE Corp.
Patent
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Dec. 31, 2012
Maximum
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May 31, 2012
Maximum
Clouding Ip Limited Liability Company
Patent
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May 31, 2012
Minimum
Clouding Ip Limited Liability Company
Patent
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| Loss Contingencies [Line Items] | ||||||||||||||||||
| Rental expense under operating lease agreements | $ 541,000,000 | $ 362,000,000 | $ 225,000,000 | |||||||||||||||
| Pledged or otherwise restricted cash and marketable securities as collateral | 99,000,000 | 156,000,000 | ||||||||||||||||
| Inventory purchases by supplier | During 2012, no vendor accounted for 10% or more of our inventory purchases | |||||||||||||||||
| Damages sought in complaint | Injunctive relief, unpaid taxes, interest, attorneys' fees, civil penalties of up to $10,000 per violation, and treble or punitive damages | |||||||||||||||||
| Maximum compensatory damages sought per violation | 10,000 | |||||||||||||||||
| Number of patents infringed | 2 | 2 | 3 | 2 | 4 | 3 | 2 | 2 | 3 | 11 | 1 | |||||||
| Plaintiff alleged damages to be paid | $ 42,000,000 | $ 40,000,000 | $ 17,000,000 | |||||||||||||||
| Number of complaints filed | 3 | |||||||||||||||||