Notes and Other Debt, Net - Narrative (Details) - USD ($) $ in Millions	Mar. 31, 2026	Feb. 04, 2026	Jan. 30, 2026	Dec. 31, 2025	Feb. 03, 2025	Oct. 04, 2024	Oct. 13, 2021	Apr. 20, 2021	Feb. 02, 2021
Debt Instrument [Line Items]
Total principal amount	$ 10,683.1			$ 9,540.5
Uniti senior secured revolving credit facility, variable rate, due December 30, 2027
Debt Instrument [Line Items]
Total principal amount	0.0			0.0
Windstream senior secured revolving credit facility - variable rate, due December 30, 2027
Debt Instrument [Line Items]
Total principal amount	0.0			315.0
Senior secured 2025 term loan - variable rate, due October 6, 2032 (discount based on imputed interest rate of 8.57%)
Debt Instrument [Line Items]
Total principal amount	997.5			1,000.0
Senior secured notes - 4.75%, due April 15, 2028 (discount based on imputed interest rate of 5.04%)
Debt Instrument [Line Items]
Total principal amount	$ 570.0			570.0				$ 570.0
Issuance senior notes, stated percentage	4.75%
6.50% Senior Unsecured Notes due 2029
Debt Instrument [Line Items]
Total principal amount									$ 1,100.0
Senior unsecured notes - 6.50%, due February 15, 2029 (discount based on imputed interest rate of 6.83%)
Debt Instrument [Line Items]
Total principal amount	$ 1,110.0			1,110.0
Issuance senior notes, stated percentage	6.50%
Not Recorded at Fair Value in the Financial Statements:
Debt Instrument [Line Items]
Total principal amount							$ 700.0
Senior unsecured notes - 6.00% due January 15, 2030 (discount based on imputed interest rate of 6.27%)
Debt Instrument [Line Items]
Total principal amount	$ 700.0			700.0
Issuance senior notes, stated percentage	6.00%
Senior secured notes - 8.25%, due October 1, 2031 (premium based on imputed interest rate of 7.287%)
Debt Instrument [Line Items]
Total principal amount	$ 2,200.0			2,200.0
Issuance senior notes, stated percentage	8.25%
Senior secured notes - 8.25%, due October 1, 2031 (premium based on imputed interest rate of 7.287%) \| Senior Secured Notes
Debt Instrument [Line Items]
Issuance senior notes, stated percentage						8.25%
Senior unsecured notes - 8.625% due June 15, 2032 (discount based on imputed interest rate of 9.03%)
Debt Instrument [Line Items]
Total principal amount	$ 1,600.0			600.0
Issuance senior notes, stated percentage	8.625%	8.625%
Senior secured notes - 7.50%, due October 15, 2033 (discount based on imputed interest rate of 7.72%)
Debt Instrument [Line Items]
Total principal amount	$ 1,400.0			1,400.0
Issuance senior notes, stated percentage	7.50%
Convertible Senior Notes 2027, Excluding Over-Allotment Option
Debt Instrument [Line Items]
Total principal amount	$ 306.5
Convertible senior notes - 7.50%, due December 1, 2027 (discount based on imputed interest rate of 8.29%)
Debt Instrument [Line Items]
Total principal amount	$ 306.5			306.5
Issuance senior notes, stated percentage	7.50%
ABS Notes
Debt Instrument [Line Items]
Total principal amount	$ 839.0
ABS Notes (Class A-2) - 5.877%, due April 1, 2030 (discount based on imputed interest rate of 6.36%)
Debt Instrument [Line Items]
Total principal amount	$ 426.0			426.0	$ 426.0
Issuance senior notes, stated percentage	5.877%
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]
Total principal amount	$ 180.0			180.0
Issuance senior notes, stated percentage	5.177%
ABS Notes (Class B) - 6.369%, due April 1, 2030 (discount based on imputed interest rate of 6.86%)
Debt Instrument [Line Items]
Total principal amount	$ 65.0			65.0	65.0
Issuance senior notes, stated percentage	6.369%
ABS-2 Notes (Class B) - 5.621%, due January 20, 2031 (discount based on imputed interest rate of 6.21%)
Debt Instrument [Line Items]
Total principal amount	$ 28.2			28.2
Issuance senior notes, stated percentage	5.621%
ABS Notes (Class C) - 9.018%, due April 1, 2030 (discount based on imputed interest rate of 9.54%)
Debt Instrument [Line Items]
Total principal amount	$ 98.0			98.0	$ 98.0
Issuance senior notes, stated percentage	9.018%
ABS-2 Notes (Class C) - 7.834%, due January 20, 2031 (discount based on imputed interest rate of 8.45%)
Debt Instrument [Line Items]
Total principal amount	$ 41.8			41.8
Issuance senior notes, stated percentage	7.834%
Kinetic ABS Term Notes
Debt Instrument [Line Items]
Total principal amount			$ 960.1
Kinetic ABS Notes (Class A-2) - 5.219%, due February 1, 2031 (discount based on imputed interest rate of 5.720%)
Debt Instrument [Line Items]
Total principal amount	$ 677.7		677.7	0.0
Issuance senior notes, stated percentage	5.219%
Kinetic ABS Notes (Class B) - 5.561%, due February 1, 2031 (discount based on imputed interest rate of 6.066%)
Debt Instrument [Line Items]
Total principal amount	$ 113.0		$ 113.0	$ 0.0
Issuance senior notes, stated percentage			5.561%
Seven Point Six Five Three Percentage Series 2026-1, Class C Term Notes Due February Twenty Thirty One
Debt Instrument [Line Items]
Total principal amount			$ 169.4
Issuance senior notes, stated percentage	7.653%