Notes and Other Debt - The Notes and Deferred Financing Cost Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands									1 Months Ended	3 Months Ended		12 Months Ended
	Mar. 21, 2023	Dec. 12, 2022	Dec. 07, 2022	Dec. 15, 2021	Oct. 13, 2021	May 06, 2021	Jan. 01, 2021	Jun. 28, 2019	Dec. 31, 2022	Mar. 31, 2023	Jun. 30, 2021	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Feb. 14, 2023	Apr. 20, 2021	Feb. 02, 2021	Dec. 31, 2020	Jun. 25, 2019
Debt Instrument [Line Items]
Principal amount									$ 5,262,373			$ 5,617,442	$ 5,262,373
Gain (loss) on extinguishment of debt												(31,187)	10,754	$ (49,280)
Interest expense, net												512,349	376,832	446,296
Additional paid-in capital									1,210,033			1,221,824	1,210,033
Payments for capped call option												0	21,149	0
Amortization of deferred financing costs												18,100	17,500	16,500
Convertible Debt
Debt Instrument [Line Items]
Proceeds from debt, net of issuance costs													$ 198,100
Payments for capped call option			$ 21,100						$ 21,100
Cumulative Effect Adjustment for Adoption of New Accounting Standard
Debt Instrument [Line Items]
Additional paid-in capital							$ (59,900)
Deferred tax liabilities							(15,800)
Retained earnings							14,600
Exchangeable Notes
Debt Instrument [Line Items]
Issuance of senior notes, principal amount								$ 345,000
Issuance senior notes, stated percentage								4.00%											4.00%
Principal amount	$ 15,000							$ 345,000
Gain (loss) on extinguishment of debt		$ 10,800								$ 1,100
Debt issuance cost								$ 2,900		100
Debt instrument, indenture exchange price per share								$ 12.43
Debt instrument, redemption price, percentage								100.00%
Debt instrument, redemption threshold percentage of stock price								130.00%
Effective interest rate								11.10%
Debt issuance costs commissions payable								$ 10,400
Debt issuance costs payable to third party								1,400
Equity component value of convertible note issuance, net								$ 80,800
Repayments of long-term debt	$ 13,700
Gain on extinguishment of debt, before write off of debt issuance cost		13,100
Write off of deferred debt issuance cost		$ 2,300
Exchangeable Senior Unsecured Notes | Cumulative Effect Adjustment for Adoption of New Accounting Standard
Debt Instrument [Line Items]
Principal amount							$ 336,500
Effective interest rate							4.80%											11.10%
Increase in carrying amount of debt due to adoption							$ 61,100
Exchangeable Senior Unsecured Notes | Cumulative Effect Adjustment for Adoption of New Accounting Standard | ASU 2020-06
Debt Instrument [Line Items]
Principal amount																		$ 275,400
Convertible Senior Notes 2027
Debt Instrument [Line Items]
Principal amount												$ 306,500
Convertible Senior Notes 2027 | Convertible Debt
Debt Instrument [Line Items]
Issuance senior notes, stated percentage												7.50%
Debt instrument, indenture exchange price per share		$ 7.29
Extinguishment of debt, amount		$ 207,100
Repayments of long-term debt		194,000
Proceeds from long-term debt		298,100
Convertible Senior Notes 2027, Excluding Over-Allotment Option
Debt Instrument [Line Items]
Issuance senior notes, stated percentage									7.50%			7.50%	7.50%
Principal amount									$ 306,500			$ 306,500	$ 306,500
Effective interest rate									8.29%			8.29%	8.29%
Convertible Senior Notes 2027, Excluding Over-Allotment Option | Convertible Debt
Debt Instrument [Line Items]
Issuance of senior notes, principal amount		$ 300,000
Convertible Senior Notes 2027, Over-Allotment Option | Convertible Debt
Debt Instrument [Line Items]
Issuance of senior notes, principal amount			$ 6,500
Senior secured notes - 10.50%, due February 15, 2028
Debt Instrument [Line Items]
Issuance of senior notes, principal amount															$ 2,600,000
Issuance senior notes, stated percentage									10.50%			10.50%	10.50%
Principal amount									$ 0			$ 2,600,000	$ 0
Effective interest rate									11.06%			11.06%	11.06%
Senior secured notes - 7.875%, due February 15, 2025
Debt Instrument [Line Items]
Issuance senior notes, stated percentage									7.875%			7.875%	7.875%
Principal amount									$ 2,250,000			$ 0	$ 2,250,000
Effective interest rate									8.38%			8.38%	8.38%
Senior secured notes - 7.875%, due February 15, 2025 | Uniti Group LP, Uniti Group Finance 2019 Inc. and CSL Capital, LLC
Debt Instrument [Line Items]
Principal amount															$ 2,250,000
Gain (loss) on extinguishment of debt										32,300
Debt issuance cost										10,300
Interest expense, net										$ 22,000
Senior secured notes - 7.875%, due February 15, 2025 | Operating Partnership, CSL Capital, LLC, Uniti Group Finance 2019 Inc. and Uniti Fiber
Debt Instrument [Line Items]
Issuance senior notes, stated percentage															7.875%
4.75% Senior Secured Notes
Debt Instrument [Line Items]
Issuance of senior notes, principal amount																$ 570,000
6.00% Senior Secured Notes
Debt Instrument [Line Items]
Issuance senior notes, stated percentage																6.00%
Repayments of debt instrument						$ 550,000
Debt issuance cost											$ 1,300
Interest expense, net											3,000
6.00% Senior Secured Notes | Interest Expense
Debt Instrument [Line Items]
Loss on repayment of tendered notes											$ 4,300
Senior secured notes - 4.75%, due April 15, 2028
Debt Instrument [Line Items]
Issuance senior notes, stated percentage									4.75%			4.75%	4.75%			4.75%
Principal amount									$ 570,000			$ 570,000	$ 570,000
Effective interest rate									5.04%			5.04%	5.04%
Senior Unsecured Notes - 6.50%, Due February 24, 2029
Debt Instrument [Line Items]
Issuance of senior notes, principal amount																	$ 1,110,000
8.25% Senior Unsecured Notes
Debt Instrument [Line Items]
Issuance senior notes, stated percentage																	8.25%
Debt issuance cost														21,500
Interest expense, net														17,600
8.25% Senior Unsecured Notes | Interest Expense
Debt Instrument [Line Items]
Loss on repayment of tendered notes														39,100
Senior unsecured notes - 6.50%, due February 15, 2029
Debt Instrument [Line Items]
Issuance senior notes, stated percentage									6.50%			6.50%	6.50%				6.50%
Principal amount									$ 1,110,000			$ 1,110,000	$ 1,110,000
Effective interest rate									6.83%			6.83%	6.83%
6.00% Senior Unsecured Notes due 2030
Debt Instrument [Line Items]
Issuance of senior notes, principal amount					$ 700,000
Issuance senior notes, stated percentage					6.00%
6.00% Senior Unsecured Notes due 2030 | Windstream
Debt Instrument [Line Items]
Proceeds from senior notes used to prepayment of settlement obligations under settlement agreement					$ 78,000
7.125% Senior Unsecured Notes
Debt Instrument [Line Items]
Issuance senior notes, stated percentage												7.125%
Repayments of debt instrument				$ 600,000
Debt issuance cost														1,800
Interest expense, net														4,100
7.125% Senior Unsecured Notes | Interest Expense
Debt Instrument [Line Items]
Loss on repayment of tendered notes														$ 5,900