Schedule I – Condensed Financial Information of The Registrant (Parent Company) - Narrative (Details) $ / shares in Units, $ in Millions			12 Months Ended
	Aug. 01, 2025 USD ($) agreement	May 03, 2024 USD ($) $ / shares shares	Dec. 31, 2025 USD ($) $ / shares	Dec. 31, 2024 USD ($) $ / shares	Dec. 31, 2023 USD ($)
Condensed Financial Statements Captions [Line Items]
Common stock, par value (in dollars per share) | $ / shares			$ 0.0001	$ 0.0001
Gain on settlement of preexisting relationships			$ 1,683.9	$ 0.0	$ 0.0
Senior secured notes - 7.50%, due October 15, 2033 (discount based on imputed interest rate of 7.72%)
Condensed Financial Statements Captions [Line Items]
Issuance senior notes, stated percentage			7.50%
Uniti Group LP
Condensed Financial Statements Captions [Line Items]
Percentage of partnership interests owned	100.00%
Uniti Group Inc.
Condensed Financial Statements Captions [Line Items]
Common stock, par value (in dollars per share) | $ / shares			$ 0.0001	$ 0.0001
Gain on settlement of preexisting relationships			$ 499.1	$ 0.0	0.0
Cash dividends received from subsidiaries				$ 106.7	$ 106.4
Uniti Group, PreMerger Assets Settled
Condensed Financial Statements Captions [Line Items]
Number of lease agreements | agreement	2
Useful life	20 years
Operating lease assets, including discontinued operation	$ 559.0
Asset purchase agreement, liabilities, including discontinued operation	(60.0)
Other lease agreement assets, including discontinued operation	$ 0.1
Windstream Merger
Condensed Financial Statements Captions [Line Items]
Preferred stock, dividend rate, annual increase, percentage		1.00%
Preferred stock, liquidation preference, value		$ 575.0
Common stock aggregate at an exercise price (in dollars per share) | $ / shares		$ 0.01
Class of warrant or right, outstanding stock, percentage		6.90%
Business combination, consideration transferred		$ 370.7
Windstream Merger | Maximum
Condensed Financial Statements Captions [Line Items]
Preferred stock, dividend rate, percentage		16.00%
Windstream Merger | Period One
Condensed Financial Statements Captions [Line Items]
Preferred stock, dividend rate, percentage		11.00%
Preferred stock, dividend rate, percentage, term		6 years
Windstream Merger | Period Two
Condensed Financial Statements Captions [Line Items]
Preferred stock, dividend rate, annual increase, percentage		0.50%
Non Voting Preferred Stock
Condensed Financial Statements Captions [Line Items]
Business combination, consideration transferred, equity interest, share issued (in shares) | shares		600,000
Old Common Stock Member
Condensed Financial Statements Captions [Line Items]
Common stock, par value (in dollars per share) | $ / shares			$ 0.0001
Common Stock
Condensed Financial Statements Captions [Line Items]
Exchange of noncontrolling interest (in shares) | shares		0.6029
Warrants (in shares) | shares		17,600,000
Common Stock | Windstream Merger
Condensed Financial Statements Captions [Line Items]
Business combination, consideration transferred, equity interest, share issued (in shares) | shares		90,100,000
Remaining equity interest acquired percentage		35.42%