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Summary of Significant Accounting Policies - Schedule of Changes in Carrying Value of Goodwill, by Reportable Operating Segment (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2020 | Dec. 31, 2020 | Dec. 31, 2019
Gross amount of goodwill [Roll Forward] |  |  |
Beginning balance | $ 4,485,209 | $ 4,485,209 | $ 4,441,030
Tax deductible goodwill acquired during the year |  |  | 16,450
Non-tax deductible goodwill acquired during the year |  | 54,258 | 13,132
Goodwill impairment | (23,000) | (23,000) |
Fair value and other adjustments |  | (3,412) | 4,280
Currency effects |  | 44,554 | 10,317
Ending balance |  | 4,557,609 | 4,485,209
Accumulated goodwill impairment |  | 158,420 | 135,420
GLOBAL RIM BUSINESS |  |  |
Gross amount of goodwill [Roll Forward] |  |  |
Beginning balance | 3,942,901 | 3,942,901 | 3,899,210
Tax deductible goodwill acquired during the year |  |  | 16,450
Non-tax deductible goodwill acquired during the year |  | 54,258 | 11,228
Goodwill impairment |  | 0 |
Fair value and other adjustments |  | (3,815) | 4,439
Currency effects |  | 30,838 | 11,574
Ending balance |  | 4,024,182 | 3,942,901
Accumulated goodwill impairment |  | 132,409 | 132,409
GLOBAL DATA CENTER BUSINESS |  |  |
Gross amount of goodwill [Roll Forward] |  |  |
Beginning balance | 424,568 | 424,568 | 425,956
Tax deductible goodwill acquired during the year |  |  | 0
Non-tax deductible goodwill acquired during the year |  | 0 | 0
Goodwill impairment |  | 0 |
Fair value and other adjustments |  | 0 | 258
Currency effects |  | 12,419 | (1,646)
Ending balance |  | 436,987 | 424,568
Accumulated goodwill impairment |  | 0 | 0
CORPORATE AND OTHER BUSINESS |  |  |
Gross amount of goodwill [Roll Forward] |  |  |
Beginning balance | $ 117,740 | 117,740 | 115,864
Tax deductible goodwill acquired during the year |  |  | 0
Non-tax deductible goodwill acquired during the year |  | 0 | 1,904
Goodwill impairment |  | (23,000) |
Fair value and other adjustments |  | 403 | (417)
Currency effects |  | 1,297 | 389
Ending balance |  | 96,440 | 117,740
Accumulated goodwill impairment |  | $ 26,011 | $ 3,011

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