Notes and Other Debt - Mandatory Exchange of Additional February 2028 Secured Notes (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Mar. 31, 2023	Sep. 30, 2024	Sep. 30, 2023	May 17, 2024	Dec. 31, 2023	Feb. 14, 2023
Debt Instrument [Line Items]
Principal amount	$ 5,866,500			$ 5,866,500			$ 5,617,442
Loss on extinguishment of debt, net				0	$ 31,187
Interest expense	131,007	$ 120,691		381,693	$ 389,243
February 2028 Secured Notes
Debt Instrument [Line Items]
Principal amount	$ 2,900,000			$ 2,900,000			$ 2,600,000	$ 2,600,000
Issuance senior notes, stated percentage	10.50%			10.50%			10.50%
February 2028 Secured Notes | Secured Debt
Debt Instrument [Line Items]
Principal amount						$ 300,000
2025 Secured Notes | Uniti Group LP, Uniti Group Finance 2019 Inc. and CSL Capital, LLC
Debt Instrument [Line Items]
Principal amount								$ 2,250,000
Loss on extinguishment of debt, net			$ 32,300
Debt issuance costs, net			10,300
Interest expense			$ 22,000
2025 Secured Notes | Borrowers
Debt Instrument [Line Items]
Issuance senior notes, stated percentage								7.875%