Condensed Consolidated Statements of Shareholders’ Equity (Deficit) - USD ($) $ in Thousands	Total	New Uniti Preferred Stock	Old Uniti Preferred Stock	Common Stock	Warrant	Preferred Stock New Uniti Preferred Stock	Preferred Stock Old Uniti Preferred Stock	Common Stock	Common Stock Common Stock	Additional Paid-in Capital	Additional Paid-in Capital New Uniti Preferred Stock	Additional Paid-in Capital Common Stock	Additional Paid-in Capital Warrant	Accumulated Other Comprehensive Loss	Distributions in Excess of Accumulated Earnings	Noncontrolling Interests
Beginning balance (in shares) at Dec. 31, 2023							0
Beginning balance at Dec. 31, 2023	$ (2,484,100)						$ 0	$ 0		$ 1,221,800				$ 0	$ (3,708,200)	$ 2,300
Beginning balance (in shares) at Dec. 31, 2023								142,600,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	71,800														71,800
Other comprehensive loss	(800)													(800)
Common stock dividends declared	(72,300)														(72,300)
Exchange of noncontrolling interest (in shares)								100,000
Exchange of noncontrolling interest	(100)									1,200						(1,300)
Payments related to tax withholding for stock-based compensation	(1,600)									(1,600)
Stock-based compensation (in shares)								400,000
Stock-based compensation	10,100									10,100
Issuance of common stock - employee stock purchase plan (in shares)								100,000
Issuance of common stock - employee stock purchase plan	700									700
Ending balance (in shares) at Sep. 30, 2024							0
Ending balance at Sep. 30, 2024	(2,476,300)						$ 0	$ 0		1,232,200				(800)	(3,708,700)	1,000
Ending balance (in shares) at Sep. 30, 2024								143,200,000
Beginning balance (in shares) at Jun. 30, 2024							0
Beginning balance at Jun. 30, 2024	(2,492,400)						$ 0	$ 0		1,228,500				100	(3,722,000)	1,000
Beginning balance (in shares) at Jun. 30, 2024								143,100,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	12,200														12,200
Other comprehensive loss	(900)													(900)
Performance award dividend	1,100														1,100
Stock-based compensation	3,400									3,400
Issuance of common stock - employee stock purchase plan (in shares)								100,000
Issuance of common stock - employee stock purchase plan	300									300
Ending balance (in shares) at Sep. 30, 2024							0
Ending balance at Sep. 30, 2024	(2,476,300)						$ 0	$ 0		1,232,200				(800)	(3,708,700)	1,000
Ending balance (in shares) at Sep. 30, 2024								143,200,000
Beginning balance (in shares) at Dec. 31, 2024			0			0	0
Beginning balance at Dec. 31, 2024	$ (2,451,900)					$ 0	$ 0	$ 0		1,236,000				(600)	(3,687,800)	500
Beginning balance (in shares) at Dec. 31, 2024	143,200,000							143,200,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 1,610,400														1,610,400
Other comprehensive loss	(700)													(700)
Exchange of noncontrolling interest	(100)									200						(300)
Issuance of stock in the Merger (in shares)						600,000			90,100,000
Issuance of stock in the Merger		$ 630,400		$ 733,700	$ 142,700						$ 630,400	$ 733,700	$ 142,700
Preferred stock dividend	0									9,900					(9,900)
Payments related to tax withholding for stock-based compensation	(2,300)									(2,300)
Stock-based compensation (in shares)								600,000
Stock-based compensation	17,400									17,400
Other, net (in shares)								100,000
Other, net	1,200									600					700	(100)
Ending balance (in shares) at Sep. 30, 2025		600,000				600,000	0
Ending balance at Sep. 30, 2025	$ 680,800					$ 0	$ 0	$ 0		2,768,600				(1,300)	(2,086,600)	100
Ending balance (in shares) at Sep. 30, 2025	234,000,000.0							234,000,000.0
Beginning balance (in shares) at Jun. 30, 2025						0	0
Beginning balance at Jun. 30, 2025	$ (2,444,100)					$ 0	$ 0	$ 0		1,241,500				(200)	(3,685,600)	200
Beginning balance (in shares) at Jun. 30, 2025								143,900,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	1,608,900														1,608,900
Other comprehensive loss	(1,100)													(1,100)
Issuance of stock in the Merger (in shares)						600,000			90,100,000
Issuance of stock in the Merger		$ 630,400		$ 733,700	$ 142,700						$ 630,400	$ 733,700	$ 142,700
Preferred stock dividend	0									9,900					(9,900)
Payments related to tax withholding for stock-based compensation	0									0
Stock-based compensation	10,100									10,100
Other, net	200									300						(100)
Ending balance (in shares) at Sep. 30, 2025		600,000				600,000	0
Ending balance at Sep. 30, 2025	$ 680,800					$ 0	$ 0	$ 0		$ 2,768,600				$ (1,300)	$ (2,086,600)	$ 100
Ending balance (in shares) at Sep. 30, 2025	234,000,000.0							234,000,000.0