Schedule I - Condensed Financial Information of The Registrant (Parent Company) - Condensed Statements of Cash Flows (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Cash flow from operating activities
Net cash provided by (used in) operating activities	$ 157,233	$ 616,982	$ 472,818
Cash flow from investing activities
Proceeds from sale of real estate, net of cash	391,885	130,429
Net cash provided by (used in) investing activities	1,394	(544,781)	(480,543)
Cash flow from financing activities
Settlement Common Stock issuance (Note 17)	244,550
Proceeds from issuance of Notes	2,250,000	345,000
Payments for financing costs	(50,875)	(49,497)
Common stock issuance, net of costs	244,550
Net share settlement	(1,097)	(1,834)	(1,605)
Proceeds from sale of warrants	50,800	50,819
Payment for bond hedge option		(70,035)
Employee stock purchase plan	676	883
Net cash (used in) provided by financing activities	(223,906)	32,629	(13,841)
Effect of exchange rates on cash and cash equivalents		(43)	(173)
Net (decrease) increase in cash and cash equivalents	(65,279)	104,787	(21,739)
Cash and cash equivalents at beginning of period	142,813	38,026	59,765
Cash and cash equivalents at end of period	77,534	142,813	38,026
Non-cash investing and financing activities:
Settlement of convertible preferred stock, Series A Shares		87,500
Settlement of contingent consideration through non-cash consideration		11,178
Uniti Group Inc.
Cash flow from operating activities
Net cash provided by (used in) operating activities	94,533	199,572	425,771
Cash flow from investing activities
Proceeds from sale of real estate, net of cash		2,488
Net cash provided by (used in) investing activities		2,488
Cash flow from financing activities
Settlement Common Stock issuance (Note 17)	244,550	21,641	109,441
Dividends paid	(135,676)	(138,731)	(426,094)
Proceeds from issuance of Notes		83,665
Payments for financing costs		(2,895)
Common stock issuance, net of costs	244,550	21,641	109,441
Net share settlement	(1,097)	(1,834)	(1,604)
Proceeds from sale of warrants		50,819
Payment for bond hedge option		(70,035)
Intercompany transactions, net	(244,125)	(102,411)	(109,441)
Employee stock purchase plan	676	883
Net cash (used in) provided by financing activities	(135,672)	(158,898)	(427,698)
Net (decrease) increase in cash and cash equivalents	(41,139)	43,162	(1,927)
Cash and cash equivalents at beginning of period	43,423	261	2,188
Cash and cash equivalents at end of period	$ 2,284	43,423	$ 261
Non-cash investing and financing activities:
Settlement of convertible preferred stock, Series A Shares		87,500
Settlement of contingent consideration through non-cash consideration		$ 11,178