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Employee Benefit Plans- Additional Information (Detail) - USD ($) | 12 Months Ended
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Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Schedule Of Defined Contribution Plans Disclosures [Line Items] |  |  |
Employees maximum 401(k) contribution, percentage | 75.00% |  |
Defined contribution plan, contribution | $ 6,100,000 | $ 6,000,000 | $ 5,400,000
Employer 401(k) matching contribution to employee, maximum amount | $ 4,000 |  |
Defined contribution plan, employer matching percentage on every deferred dollar | 100.00% |  |
Maximum |  |  |
Schedule Of Defined Contribution Plans Disclosures [Line Items] |  |  |
Employer 401(k) matching contribution to employee percentage | 4.00% |  |
EMEA [Member] |  |  |
Schedule Of Defined Contribution Plans Disclosures [Line Items] |  |  |
Defined contribution plan, contribution | $ 1,800,000 | $ 1,500,000 | $ 1,300,000
Employees under age 50 |  |  |
Schedule Of Defined Contribution Plans Disclosures [Line Items] |  |  |
Employees maximum 401(k) contribution, amount | 18,000 |  |
Employees aged 50 or older |  |  |
Schedule Of Defined Contribution Plans Disclosures [Line Items] |  |  |
Employees maximum 401(k) contribution, amount | $ 24,000 |  |
Employed at December 1, 2000 | EMEA [Member] |  |  |
Schedule Of Defined Contribution Plans Disclosures [Line Items] |  |  |
Defined contribution plan, employer contribution percentage of eligible compensation minimum | 8.50% |  |
Employees aged over 55 years | EMEA [Member] |  |  |
Schedule Of Defined Contribution Plans Disclosures [Line Items] |  |  |
Defined contribution plan, employer contribution percentage of eligible compensation maximum | 15.50% |  |
Employed subsequent to December 1, 2000 | EMEA [Member] | Maximum |  |  |
Schedule Of Defined Contribution Plans Disclosures [Line Items] |  |  |
Defined contribution plan, employer contribution percentage of eligible compensation | 10.00% |  |
Employed subsequent to December 1, 2000 | EMEA [Member] | Minimum |  |  |
Schedule Of Defined Contribution Plans Disclosures [Line Items] |  |  |
Defined contribution plan, employer contribution percentage of eligible compensation | 6.00% |  |

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- Definition Company's maximum contribution of eligible compensation for employees aged over 55 years and employed at December 31, 2000. + References No definition available. + Details
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- Definition Company's contribution of eligible compensation for those employed after December 31, 2000. + References No definition available. + Details
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- Definition Company's contribution of eligible compensation for employees employed at December 31, 2000. + References No definition available. + Details
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- Definition Defined contribution plan employers contribution maximum. + References No definition available. + Details
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- Definition Schedule Of Defined Contribution Plans Disclosures [Line Items] + References No definition available. + Details
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- Definition The amount of the cost recognized during the period for defined contribution plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942 + Details
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- Definition Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan. + References No definition available. + Details
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- Definition Percentage employer matches of the employee's percentage contribution matched. + References No definition available. + Details
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