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Segments - Schedule of Capital Expenditures by Segment (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Segment Reporting Information [Line Items] |  |  |
Capital Expenditures | $ 227,803 | $ 178,042 | $ 191,205
Americas [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Capital Expenditures | 131,055 | 127,135 | 134,046
EMEA [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Capital Expenditures | 63,947 | 28,716 | 35,452
Asia Pacific [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Capital Expenditures | 17,122 | 19,360 | 19,179
Global Investment Management [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Capital Expenditures | 15,348 | 2,776 | 2,273
Development Services [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Capital Expenditures | $ 331 | $ 55 | $ 255

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- Definition The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3213-108585 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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