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Segment Information - Revenue and Long-Lived Assets by Geography (Details) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2018 USD ($) | Sep. 30, 2018 USD ($) | Jun. 30, 2018 USD ($) | Mar. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Sep. 30, 2017 USD ($) | Jun. 30, 2017 USD ($) | Mar. 31, 2017 USD ($) | Dec. 31, 2018 USD ($) segments | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($)
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of Reportable Segments | segments |  |  |  |  |  |  |  |  | 3 |  |
Revenue | $ 1,808,950 | $ 1,747,403 | $ 1,798,094 | $ 1,637,671 | $ 1,752,530 | $ 1,747,775 | $ 1,737,371 | $ 1,583,210 | $ 6,992,118 | $ 6,820,886 | $ 6,043,224
Property, Plant and Equipment, Net | 806,497 |  |  |  | 787,940 |  |  |  | 806,497 | 787,940 |
United States |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 3,619,717 | 3,654,102 | 3,351,466
Property, Plant and Equipment, Net | 480,780 |  |  |  | 459,931 |  |  |  | 480,780 | 459,931 |
Europe [Member] |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 1,572,788 | 1,476,686 | 1,241,297
Property, Plant and Equipment, Net | 239,070 |  |  |  | 238,986 |  |  |  | 239,070 | 238,986 |
Other Americas [Member] |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 631,164 | 621,831 | 516,544
Property, Plant and Equipment, Net | 59,550 |  |  |  | 57,016 |  |  |  | 59,550 | 57,016 |
Asia [Member] |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 867,268 | 754,845 | 658,425
Property, Plant and Equipment, Net | 24,872 |  |  |  | 29,074 |  |  |  | 24,872 | 29,074 |
Other [Member] |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 301,181 | 313,422 | $ 275,492
Property, Plant and Equipment, Net | $ 2,225 |  |  |  | $ 2,933 |  |  |  | $ 2,225 | $ 2,933 |

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