Acquisitions and Divestitures - Bluegrass Cellular (Details) $ in Millions	1 Months Ended
Mar. 31, 2021 USD ($)
Bluegrass Cellular, Certain Assets
Business Acquisition [Line Items]
Business acquisition consideration	$ 412

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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