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Contingencies - Additional Information (Detail) (USD $) |  | 1 Months Ended |  |  | 1 Months Ended | 6 Months Ended |
--- | --- | --- | --- | --- | --- | --- | ---
Jun. 30, 2013 | Dec. 21, 2013 MGA | Dec. 23, 2013 MGA | Jan. 24, 2013 MGA | Aug. 31, 2011 MGA | Aug. 11, 2011 MGA | Apr. 30, 2011 MGA LegalMatter | Apr. 27, 2009 MGA | Jul. 17, 2008 MGA | Jan. 23, 2014 MGA Minimum | Jan. 31, 2010 Yellowstone | Apr. 30, 1999 Yellowstone | Jun. 30, 2014 Yellowstone | Jul. 26, 2013 Yellowstone
Commitments and Contingencies Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Historical jury verdict |  |  |  |  |  |  |  | $ 100,000,000 | $ 100,000,000 |  |  |  |  |
Claimed trade secrets |  |  |  |  |  |  | 26 |  |  |  |  |  |  |
Other claimed trade secrets |  |  |  |  |  |  | 88 |  |  |  |  |  |  |
Compensatory damages awarded by jury |  |  |  |  |  |  | 88,500,000 |  |  |  |  |  |  |
Reduced compensatory damages awarded by court |  |  |  |  | 85,000,000 |  |  |  |  |  |  |  |  |
Punitive damages awarded |  |  |  |  | 85,000,000 |  |  |  |  |  |  |  |  |
Attorney fees and costs awarded |  |  |  |  | 140,000,000 |  |  |  |  |  |  |  |  |
Compensatory damages, punitive damages, and attorney fees and costs awarded by court |  |  |  |  | 310,000,000 |  |  |  |  |  |  |  |  |
Damages for alleged trade secret misappropriation appealed |  |  |  |  |  | 170,000,000 |  |  |  |  |  |  |  |
Attorney fees and costs appealed |  |  |  |  |  | 140,000,000 |  |  |  |  |  |  |  |
Amount of damages and attorney's fees and costs vacated by the appeals court |  |  |  | 172,500,000 |  |  |  |  |  |  |  |  |  |
Approximate amount of judgment finalized in the District Court, including interest |  | 138,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Payment of Judgment |  |  | 138,000,000 |  |  |  |  |  |  |  |  |  |  |
Litigation accrual | 137,800,000 |  |  | 138,000,000 |  |  |  |  |  |  |  |  |  |
Alleged trade secrets damages claimed |  |  |  |  |  |  |  |  |  | 1,000,000,000 |  |  |  |
Alleged loss of profits |  |  |  |  |  |  |  |  |  |  |  | 1,000,000 |  |
Unpaid accounts receivable |  |  |  |  |  |  |  |  |  |  |  |  | 4,000,000 |
Alleged business investments |  |  |  |  |  |  |  |  |  |  |  |  | 3,000,000 |
Initial court appointed expert estimated loss of profits |  |  |  |  |  |  |  |  |  |  |  |  | 1,000,000 |
Court awarded damages from counterclaim |  |  |  |  |  |  |  |  |  |  | 4,000,000 |  |  |
Damages awarded by Appeals Court including inflation and interest |  |  |  |  |  |  |  |  |  |  |  |  |  | 17,000,000
Counterclaim Awarded By Appeals Court |  |  |  |  |  |  |  |  |  |  |  |  | 9,000,000 | 8,000,000
Reasonably possible range of loss, minimum |  |  |  |  |  |  |  |  |  |  |  |  | 0 |
Reasonably possible range of loss, maximum |  |  |  |  |  |  |  |  |  |  |  |  | $ 22,000,000 |

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