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