Basis of Presentation and Significant Accounting Policies - Narrative (Detail) $ in Millions	9 Months Ended
	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Aug. 01, 2022 center	May 02, 2022 center	Apr. 01, 2022 center
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Effective income tax rate, continuing operations	13.20%	11.70%
Settlement of tax audits | $	$ 13.4	$ 40.0
MainOne
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Data centers purchased					4
Network centers acquired					1
Empresa Nacional De Telecomunicaciones S.A. | CHILE
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Data centers purchased				4
Empresa Nacional De Telecomunicaciones S.A. | PERU
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Data centers purchased			1