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Fair Value Measurements and Other Financial Instruments - Additional Information (Detail) $ in Millions | 6 Months Ended
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Jun. 30, 2016 USD ($)
Intellibot Robotics Limited Liability Company [Member] |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |
Business acquisition contingent consideration payable period | 10 years
Fair value of contingent consideration | $ 9
Minimum [Member] |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |
Certificates of deposits maturity period | 3 months
Maximum [Member] | Intellibot Robotics Limited Liability Company [Member] | Selling General And Administrative Expenses [Member] |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |
Change in fair value recognized in selling, general and administrative expense. | $ 1

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