Notes and Other Debt, Net - Schedule of Notes and Other Debt (Details) - USD ($) $ in Millions	Dec. 31, 2025	Oct. 31, 2025	Oct. 24, 2025	Oct. 06, 2025	Feb. 03, 2025	Dec. 31, 2024	Apr. 20, 2021
Debt Instrument [Line Items]
Principal	$ 9,540.5					$ 5,861.5
Unamortized premium (discount) and deferred financing costs	(1.1)					(77.9)
Current portion of notes and other debt	(10.0)					0.0
Notes and other debt, net	9,529.4					5,783.6
Uniti senior secured revolving credit facility - variable rate, due December 30, 2027
Debt Instrument [Line Items]
Principal	0.0					0.0
Unamortized premium (discount) and deferred financing costs	(2.9)					(4.3)
Windstream senior secured revolving credit facility - variable rate, due December 30, 2027
Debt Instrument [Line Items]
Principal	315.0					0.0
Unamortized premium (discount) and deferred financing costs	0.0					0.0
Senior secured Windstream term loan - variable rate, due October 1, 2031 (premium based on imputed interest rate of 9.15%)
Debt Instrument [Line Items]
Principal	500.0					0.0
Unamortized premium (discount) and deferred financing costs	$ 1.2					0.0
Effective interest rate	9.15%
Senior secured 2025 term loan - variable rate, due October 6, 2032 (discount based on imputed interest rate of 8.57%)
Debt Instrument [Line Items]
Principal	$ 1,000.0					0.0
Unamortized premium (discount) and deferred financing costs	$ (23.6)					0.0
Effective interest rate	8.57%
Senior secured notes - 10.50%, due February 15, 2028 (discount based on imputed interest rate of 10.99%)
Debt Instrument [Line Items]
Principal	$ 0.0					2,900.0
Unamortized premium (discount) and deferred financing costs	$ 0.0	$ (23.1)				(37.5)
Issuance senior notes, stated percentage	10.50%
Effective interest rate	10.99%
Senior secured notes - 4.75%, due April 15, 2028 (discount based on imputed interest rate of 5.04%)
Debt Instrument [Line Items]
Principal	$ 570.0					570.0	$ 570.0
Unamortized premium (discount) and deferred financing costs	$ (3.6)					(5.0)
Issuance senior notes, stated percentage	4.75%
Effective interest rate	5.04%
Senior secured notes - 8.25%, due October 1, 2031 (premium based on imputed interest rate of 7.29%)
Debt Instrument [Line Items]
Principal	$ 2,200.0					0.0
Unamortized premium (discount) and deferred financing costs	$ 99.3					0.0
Issuance senior notes, stated percentage	8.25%
Effective interest rate	7.29%
Senior secured notes - 7.50%, due October 15, 2033 (discount based on imputed interest rate of 7.72%)
Debt Instrument [Line Items]
Principal	$ 1,400.0			$ 1,400.0		0.0
Unamortized premium (discount) and deferred financing costs	$ (17.8)					0.0
Issuance senior notes, stated percentage	7.50%
Effective interest rate	7.72%
Senior unsecured notes - 6.50%, due February 15, 2029 (discount based on imputed interest rate of 6.83%)
Debt Instrument [Line Items]
Principal	$ 1,110.0					1,110.0
Unamortized premium (discount) and deferred financing costs	$ (10.3)					(13.1)
Issuance senior notes, stated percentage	6.50%
Effective interest rate	6.83%
Senior unsecured notes - 6.00%, due January 15, 2030 (discount based on imputed interest rate of 6.27%)
Debt Instrument [Line Items]
Principal	$ 700.0					700.0
Unamortized premium (discount) and deferred financing costs	$ (6.6)					(8.0)
Issuance senior notes, stated percentage	6.00%
Effective interest rate	6.27%
Senior unsecured notes - 8.625%, due June 15, 2032 (discount based on imputed interest rate of 9.16%)
Debt Instrument [Line Items]
Principal	$ 600.0					0.0
Unamortized premium (discount) and deferred financing costs	$ (15.6)					0.0
Issuance senior notes, stated percentage	8.625%
Effective interest rate	9.16%
Convertible senior notes - 7.50%, due December 1, 2027 (discount based on imputed interest rate of 8.29%)
Debt Instrument [Line Items]
Principal	$ 306.5					306.5
Unamortized premium (discount) and deferred financing costs	$ (4.3)					(6.3)
Issuance senior notes, stated percentage	7.50%
Effective interest rate	8.29%
ABS Bridge Loan Facility - variable rate, due September 1, 2025 (discount based on imputed interest rate of 10.33%)
Debt Instrument [Line Items]
Principal	$ 0.0		$ 250.0		$ 589.0	275.0
Unamortized premium (discount) and deferred financing costs	$ 0.0					(3.7)
Effective interest rate	10.33%
ABS Notes (Class A-2) - 5.877%, due April 1, 2030 (discount based on imputed interest rate of 6.36%)
Debt Instrument [Line Items]
Principal	$ 426.0				426.0	0.0
Unamortized premium (discount) and deferred financing costs	$ (7.6)					0.0
Issuance senior notes, stated percentage	5.877%
Effective interest rate	6.36%
ABS Notes (Class B) - 6.369%, due April 1, 2030 (discount based on imputed interest rate of 6.86%)
Debt Instrument [Line Items]
Principal	$ 65.0				65.0	0.0
Unamortized premium (discount) and deferred financing costs	$ (1.2)					0.0
Issuance senior notes, stated percentage	6.369%
Effective interest rate	6.86%
ABS Notes (Class C) - 9.018%, due April 1, 2030 (discount based on imputed interest rate of 9.54%)
Debt Instrument [Line Items]
Principal	$ 98.0				$ 98.0	0.0
Unamortized premium (discount) and deferred financing costs	$ (1.8)					0.0
Issuance senior notes, stated percentage	9.018%
Effective interest rate	9.54%
ABS-2 Notes (Class A-2) - 5.177%, due January 20, 2031 (discount based on imputed interest rate of 5.76%)
Debt Instrument [Line Items]
Principal	$ 180.0		180.0			0.0
Unamortized premium (discount) and deferred financing costs	$ (4.5)					0.0
Issuance senior notes, stated percentage	5.177%
Effective interest rate	5.76%
ABS-2 Notes (Class B) - 5.621%, due January 20, 2031 (discount based on imputed interest rate of 6.21%)
Debt Instrument [Line Items]
Principal	$ 28.2		28.2			0.0
Unamortized premium (discount) and deferred financing costs	$ (0.7)					0.0
Issuance senior notes, stated percentage	5.621%
Effective interest rate	6.21%
ABS-2 Notes (Class C) - 7.834%, due January 20, 2031 (discount based on imputed interest rate of 8.45%)
Debt Instrument [Line Items]
Principal	$ 41.8		$ 41.8			0.0
Unamortized premium (discount) and deferred financing costs	$ (1.1)					$ 0.0
Issuance senior notes, stated percentage	7.834%
Effective interest rate	8.45%