Balance Sheet Components - Other Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Jan. 01, 2019	Dec. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred tax assets, net	$ 66,424	$ 35,806
Prepaid expenses	82,443	61,690
Debt issuance costs, net	4,261	6,395
Deposits	69,043	56,567
Restricted cash	9,691	9,946
Derivative instruments	2,793	32,280
Contract assets, non-current	54,050	31,521		$ 16,396
Contract costs	267,978	229,205
Equity method investments	163,071	59,737
Other assets	56,293	57,641
Total other assets	776,047	580,788	$ 469,784	$ 533,252
Metronode
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Indemnification assets	42,800	$ 37,700
Accounting Standards Update 2018-15 Prospective
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Capitalized CCA implementation costs	$ 21,100