Acquisitions and Divestitures	9 Months Ended
Acquisitions and Divestitures	Sep. 30, 2025
Divestitures [Abstract]
Divestitures	Note 6 Acquisitions and Divestitures In addition to the divestiture of Array's wireless operations, as disclosed in Note 2 — Discontinued Operations, other acquisition and divestiture transactions are disclosed below. The estimated closing dates of the license sale transactions cited below could be impacted by the duration of the ongoing shutdown of the U.S. federal government. On October 17, 2024, Array entered into a License Purchase Agreement (Verizon License Purchase Agreement) with Verizon Communications Inc. (Verizon) to sell certain AWS, Cellular and PCS wireless spectrum licenses and agreed to grant Verizon certain rights to lease such licenses prior to the transaction close for total proceeds of $1,000.0 million. As of September 30, 2025, the book value of the wireless spectrum licenses to be sold was $585.6 million and is classified as held for sale in the Consolidated Balance Sheet. The transaction is expected to close in the third quarter of 2026, subject to regulatory approval and other customary closing conditions, and the termination of the T-Mobile Short-Term Spectrum Manager Lease Agreement. On November 6, 2024, Array entered into a License Purchase Agreement (AT&T License Purchase Agreement) with New Cingular Wireless PCS, LLC (AT&T), a subsidiary of AT&T Inc. to sell certain 3.45 GHz and 700 MHz wireless spectrum licenses and agreed to grant AT&T certain rights to lease and sub-lease such licenses prior to the transaction close for total proceeds of $1,018.0 million, subject to certain purchase price adjustments. As of September 30, 2025, the book value of the wireless spectrum licenses to be sold was $860.1 million and is classified as held for sale in the Consolidated Balance Sheet. The transaction is expected to close in the fourth quarter of 2025 or first half of 2026, subject to regulatory approval and other customary closing conditions. On August 29, 2025, Array entered into a License Purchase Agreement (T-Mobile License Purchase Agreement) with T-Mobile to sell certain 700 MHz wireless spectrum licenses and agreed to grant T-Mobile certain rights to lease such licenses prior to the transaction close for total proceeds of $85.0 million. As of September 30, 2025, the book value of the wireless spectrum licenses to be sold was $64.3 million, of which $53.1 million was submitted for regulatory approval and is classified as held for sale in the Consolidated Balance Sheet. The transaction is expected to close in 2026, subject to regulatory approval and other customary closing conditions. As part of the T-Mobile transaction to sell the wireless operations, Array entered into a Put/Call Agreement with T-Mobile whereby T-Mobile has the right to call certain spectrum assets and Array has the right to put certain spectrum assets to T-Mobile for an aggregate agreed upon price of $106.0 million. The call option notice period started on May 24, 2024, and the put exercise period started on August 1, 2025. There was no cash exchanged at the inception of the Put/Call Agreement. All license transfers pursuant to any put/call are subject to Federal Communications Commission (FCC) approval. Array accounts for this instrument as a net written call option and records such option at fair value each reporting period unless/until such option is exercised or terminated. As of September 30, 2025, Array wrote off the entire fair value of the net written call option. The change in fair value is recorded to (Gain) loss on license sales and exchanges, net in the Consolidated Statement of Operations. In September 2025, T-Mobile exercised $86.4 million of the call option. As of September 30, 2025, the book value of the spectrum licenses subject to the call notice was $86.5 million and is classified as held for sale in the Consolidated Balance Sheet. The transaction is expected to close in 2026, subject to regulatory approval and other customary closing conditions. The strategic alternatives review process is ongoing as Array works toward closing the Verizon, AT&T and T-Mobile spectrum transactions signed during 2024 and 2025, and seeks to opportunistically monetize its remaining spectrum assets that are not subject to executed agreements. Array incurred third-party expenses related to the announced transactions and strategic alternatives review of $0.5 million and $2.3 million for the three and nine months ended September 30, 2025, respectively, and $1.3 million and $19.9 million for the three and nine months ended September 30, 2024, respectively, which are included in Selling, general and administrative expenses for continuing operations. On August 1, 2025, noncontrolling entities managed by Array that are not consolidated into the Array financial statements but are accounted for as equity method investments sold their wireless operations to T-Mobile in separate transactions, coterminous with the sale of Array's consolidated wireless operations sold to T-Mobile on the same date. Array realized income in the three months ended September 30, 2025 in the amount of $34.1 million related to its proportional share of the corresponding gain on sale. This income is recorded as a component of Equity in earnings of unconsolidated entities in the Consolidated Statement of Operations. In addition, Array received a distribution of $42.5 million from these transactions in August 2025 and such distribution is recorded as Distributions from unconsolidated entities in the Consolidated Statement of Cash Flows. On July 14, 2025, Array completed the acquisition of King Street Wireless, LLC and Sunshine Spectrum, LLC for a total purchase price of $16.7 million, of which $9.4 million was paid in prior periods and $7.3 million was paid at time of closing. The acquisitions result in the expected realization of certain deferred tax assets, and therefore Array recorded a reduction to valuation allowance on deferred tax assets and associated discrete income tax benefit of $47.6 million during the three months ended September 30, 2025.