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Goodwill and other intangible assets - Changes in carrying amount by reporting segment (Detail) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Goodwill [Line Items] |  |  |
Goodwill |  |  | $ 2,578,707
Accumulated impairment losses |  |  | (332,128)
Goodwill [Roll Forward] |  |  |
Goodwill, beginning balance | $ 2,245,305 | $ 2,246,579 |
Goodwill related to acquisitions | 295,066 | 1,833 |
Translation and other adjustments | 45,595 | (3,107) |
Goodwill, ending balance | 2,585,966 | 2,245,305 |
Americas | Operating Segments |  |  |
Goodwill [Line Items] |  |  |
Goodwill |  |  | 1,881,662
Accumulated impairment losses |  |  | (332,128)
Goodwill [Roll Forward] |  |  |
Goodwill, beginning balance | 1,550,925 | 1,549,534 |
Goodwill related to acquisitions | 149,877 | 439 |
Translation and other adjustments | (520) | 952 |
Goodwill, ending balance | 1,700,282 | 1,550,925 |
EMEA | Operating Segments |  |  |
Goodwill [Line Items] |  |  |
Goodwill |  |  | 480,615
Accumulated impairment losses |  |  | 0
Goodwill [Roll Forward] |  |  |
Goodwill, beginning balance | 475,772 | 480,615 |
Goodwill related to acquisitions | 22,364 | 189 |
Translation and other adjustments | 38,092 | (5,032) |
Goodwill, ending balance | 536,228 | 475,772 |
Asia | Operating Segments |  |  |
Goodwill [Line Items] |  |  |
Goodwill |  |  | 211,547
Accumulated impairment losses |  |  | 0
Goodwill [Roll Forward] |  |  |
Goodwill, beginning balance | 213,725 | 211,547 |
Goodwill related to acquisitions | 15,698 | 1,205 |
Translation and other adjustments | 8,023 | 973 |
Goodwill, ending balance | 237,446 | 213,725 |
OEM | Operating Segments |  |  |
Goodwill [Line Items] |  |  |
Goodwill |  |  | 4,883
Accumulated impairment losses |  |  | $ 0
Goodwill [Roll Forward] |  |  |
Goodwill, beginning balance | 4,883 | 4,883 |
Goodwill related to acquisitions | 107,127 | 0 |
Translation and other adjustments | 0 | 0 |
Goodwill, ending balance | $ 112,010 | $ 4,883 |

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