Redeemable Noncontrolling Interests	9 Months Ended
	Sep. 30, 2021
Redeemable Noncontrolling Interests [Abstract]
Redeemable Noncontrolling Interests	16. REDEEMABLE NONCONTROLLING INTERESTSAs a result of its acquisition of additional interests of a previously unconsolidated joint venture in South Africa which operated under the name Atlas Tower South Africa (“Atlas SA”), the Company has consolidated the results of the entity into its financial statements since August 2019. In connection with the acquisition of the additional interest in Atlas SA, the parties agreed to both a put option exercisable by the noncontrolling interest holder and a call option exercisable by the Company for the remaining 6% minority interest based on a formulaic approach. During the third quarter of 2020, the Company noticed its intent to exercise its call option to acquire its remaining 6% interest in the joint venture. On March 25, 2021, the Company remitted $13.7 million to the seller as closing consideration for the remaining 6% interest in the joint venture, subject to an earnout in September 2021 based on the attainment of certain future performance metrics. The parties are currently in litigation regarding various issues arising in connection with the closing of the transaction. Consequently, the Company is retaining the fair value of the acquired 6% noncontrolling interest in Redeemable Noncontrolling Interests until such time as the litigation is resolved.The fair value assigned to the redeemable noncontrolling interest as of September 30, 2021 is based on the contractually-defined redemption value, which was delivered as closing consideration for the remaining 6% interest. In accordance with the terms of the call option, the amount of closing consideration was fixed upon exercise of the call option. The Company allocates income and losses to the noncontrolling interest holder based on the applicable membership interest percentage. At each reporting period, the redeemable noncontrolling interest is recognized at the higher of (1) the initial carrying amount of the noncontrolling interest as adjusted for accumulated income or loss attributable to the noncontrolling interest holder, or (2) the contractually-defined redemption value as of the balance sheet date. Adjustments to the carrying amount of redeemable noncontrolling interest are charged against retained earnings (or additional paid-in capital if there are no retained earnings). For the nine months ended September 30, 2021, the loss attributable to the 6% interest was immaterial.