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Balance Sheet Components - Carrying Amount of Goodwill by Geographical Regions (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Goodwill [Roll Forward] |  |
Balance, Beginning | $ 4,781,858 | $ 4,836,388
Impact of foreign currency exchange | 217,931 | (16,514)
Balance, Ending | 5,472,553 | 4,781,858
xScale |  |
Goodwill [Roll Forward] |  |
Asset sales | (7,306) | (59,246)
New York 12 |  |
Goodwill [Roll Forward] |  |
Asset sales |  | (950)
2019 acquisitions |  |
Goodwill [Roll Forward] |  |
Purchase accounting - acquisition |  | 22,180
Packet Host, Inc. |  |
Goodwill [Roll Forward] |  |
Purchase accounting - acquisition | 230,620 |
Bell Acquisition |  |
Goodwill [Roll Forward] |  |
Purchase accounting - acquisition | 170,548 |
Axtel |  |
Goodwill [Roll Forward] |  |
Purchase accounting - acquisition | 78,902 |
Americas |  |
Goodwill [Roll Forward] |  |
Balance, Beginning | 1,741,689 | 1,745,804
Impact of foreign currency exchange | (8,977) | (3,165)
Balance, Ending | 2,212,782 | 1,741,689
Americas | xScale |  |
Goodwill [Roll Forward] |  |
Asset sales | 0 | 0
Americas | New York 12 |  |
Goodwill [Roll Forward] |  |
Asset sales |  | (950)
Americas | 2019 acquisitions |  |
Goodwill [Roll Forward] |  |
Purchase accounting - acquisition |  | 0
Americas | Packet Host, Inc. |  |
Goodwill [Roll Forward] |  |
Purchase accounting - acquisition | 230,620 |
Americas | Bell Acquisition |  |
Goodwill [Roll Forward] |  |
Purchase accounting - acquisition | 170,548 |
Americas | Axtel |  |
Goodwill [Roll Forward] |  |
Purchase accounting - acquisition | 78,902 |
EMEA |  |
Goodwill [Roll Forward] |  |
Balance, Beginning | 2,426,306 | 2,474,164
Impact of foreign currency exchange | 184,860 | (14,475)
Balance, Ending | 2,611,166 | 2,426,306
EMEA | xScale |  |
Goodwill [Roll Forward] |  |
Asset sales | 0 | (59,246)
EMEA | New York 12 |  |
Goodwill [Roll Forward] |  |
Asset sales |  | 0
EMEA | 2019 acquisitions |  |
Goodwill [Roll Forward] |  |
Purchase accounting - acquisition |  | 25,863
EMEA | Packet Host, Inc. |  |
Goodwill [Roll Forward] |  |
Purchase accounting - acquisition | 0 |
EMEA | Bell Acquisition |  |
Goodwill [Roll Forward] |  |
Purchase accounting - acquisition | 0 |
EMEA | Axtel |  |
Goodwill [Roll Forward] |  |
Purchase accounting - acquisition | 0 |
Asia-Pacific |  |
Goodwill [Roll Forward] |  |
Balance, Beginning | 613,863 | 616,420
Impact of foreign currency exchange | 42,048 | 1,126
Balance, Ending | 648,605 | 613,863
Asia-Pacific | xScale |  |
Goodwill [Roll Forward] |  |
Asset sales | (7,306) | 0
Asia-Pacific | New York 12 |  |
Goodwill [Roll Forward] |  |
Asset sales |  | 0
Asia-Pacific | 2019 acquisitions |  |
Goodwill [Roll Forward] |  |
Purchase accounting - acquisition |  | $ (3,683)
Asia-Pacific | Packet Host, Inc. |  |
Goodwill [Roll Forward] |  |
Purchase accounting - acquisition | 0 |
Asia-Pacific | Bell Acquisition |  |
Goodwill [Roll Forward] |  |
Purchase accounting - acquisition | 0 |
Asia-Pacific | Axtel |  |
Goodwill [Roll Forward] |  |
Purchase accounting - acquisition | $ 0 |

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