Debt instrument exchange rate of equity shares.

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Debt instrument issued percent of par.

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Debt instrument maturity year.

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Debt instrument remaining outstanding principal amount.

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Debt issuance costs commissions payable.

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Debt issuance costs payable to third party.

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Leverage ratio.

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Line of credit facility unused capacity commitment fee decrease percentage.

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Line of credit terminated related commitments.

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Long term debt payable current pursuant to fifth amendment.

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Percentage of pay cash dividends in excess of taxable income.

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Secured leverage ratio.

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Amount of amortization expense attributable to debt issuance costs.

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Amount of outstanding long-term debt or borrowing associated with any securities or credit agreement for which there has been a default in principal, interest, sinking fund, or redemption provisions, or any breach of covenant that existed at the end of the period and subsequently has not been cured.

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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The price per share of the conversion feature embedded in the debt instrument.

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Face (par) amount of debt instrument at time of issuance.

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Description of the frequency of periodic payments (monthly, quarterly, annual).

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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Discussion of the facts and amounts pertaining to each failure to comply with an affirmative or negative covenant of a long-term debt instrument, including violating payment terms or an inability to meet certain minimum financial requirements or achieve or maintain certain financial ratios. The discussion would generally be expected to also include whether or not the failure can and will be overcome and a description of the terms of any waivers, including the amount of the waiver and the period of time covered by the waiver, and if reclassification of long-term debt to current has been made in the current balance sheet.

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The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

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Notes and Other Debt - Additional Information (Details) - USD ($)											12 Months Ended
	Feb. 02, 2021	Dec. 10, 2020	Feb. 10, 2020	Jun. 28, 2019	Jun. 24, 2019	Mar. 18, 2019	May 08, 2017	Dec. 15, 2016	Jun. 09, 2016	Apr. 25, 2015	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Apr. 24, 2015
Debt Instrument [Line Items]
Debt instrument amount											$ 4,965,000,000	$ 5,224,747,000
Issuance senior notes, stated percentage											7.875%
Debt instrument, maturity year											2025
Repayments of debt												21,080,000	$ 21,080,000
Repayments of lines of credit											$ 635,019,000	203,981,000	140,000,000
Percentage of pay cash dividends in excess of taxable income						90.00%					90.00%
Amortization of deferred financing costs											$ 15,300,000	16,200,000	$ 14,700,000
Maximum
Debt Instrument [Line Items]
Consolidated secured leverage ratio											500.00%
Total leverage ratio											650.00%
Maximum \| Pro Forma
Debt Instrument [Line Items]
Consolidated secured leverage ratio											400.00%
CSL Capital, LLC
Debt Instrument [Line Items]
Debt instrument, debt default, description of violation or event of default											In particular, a repayment obligation could be triggered if (i) the Borrowers or certain of their subsidiaries fail to make a payment when due of any principal or interest on any other indebtedness aggregating $75.0 million or more, or (ii) an event occurs that causes, or would permit the holders of any other indebtedness aggregating $75.0 million or more to cause, such indebtedness to become due prior to its stated maturity.
Debt Instrument, debt default, amount											$ 75,000,000.0
Senior Secured Revolving Credit Facility
Debt Instrument [Line Items]
Debt instrument amount		$ 560,500,000			$ 575,900,000						$ 110,000,000	$ 575,019,000
Debt instrument, maturity date					Apr. 24, 2022						Apr. 24, 2022	Apr. 24, 2022
Repayments of debt				$ 174,000,000.0
Repayments of lines of credit			$ 156,700,000
Revolving loans terminated related commitments			157,600,000
Debt instrument, payable pursuant to fifth amendment					$ 101,600,000
Debt instrument, non extended maturity amount					$ 72,400,000
Commitment fee percentage of average amount of unused commitments											0.50%
Commitment fee step-down percentage of average amount of unused commitments											0.40%
Senior Secured Notes - 6.00% Due April 15, 2023
Debt Instrument [Line Items]
Debt instrument amount											$ 550,000,000	$ 550,000,000
Issuance senior notes, stated percentage											6.00%	6.00%
Debt instrument, maturity date											Apr. 15, 2023	Apr. 15, 2023
Debt discount amortized to interest expense effective interest rate											6.49%	6.49%
Senior Secured Notes - 6.00% Due April 15, 2023 \| CSL Capital, LLC
Debt Instrument [Line Items]
Issuance of senior notes, principal amount									$ 150,000,000		$ 550,000,000			$ 400,000,000
Notes issued price percentage at par									99.25%	100.00%
Senior Unsecured Notes - 8.25% Due October 15, 2023
Debt Instrument [Line Items]
Debt instrument amount											$ 1,110,000,000	$ 1,110,000,000
Issuance senior notes, stated percentage											8.25%	8.25%
Debt instrument, maturity date											Oct. 15, 2023	Oct. 15, 2023
Debt discount amortized to interest expense effective interest rate											9.06%	9.06%
Senior Unsecured Notes - 8.25% Due October 15, 2023 \| CSL Capital, LLC
Debt Instrument [Line Items]
Issuance of senior notes, principal amount														$ 1,110,000,000
Notes issued price percentage at par										97.055%
Senior Unsecured Notes - 7.125% Due December 15, 2024
Debt Instrument [Line Items]
Debt instrument amount											$ 600,000,000	$ 600,000,000
Issuance senior notes, stated percentage											7.125%	7.125%
Debt instrument, maturity date											Dec. 15, 2024	Dec. 15, 2024
Debt discount amortized to interest expense effective interest rate											7.38%	7.38%
Senior Unsecured Notes - 7.125% Due December 15, 2024 \| CSL Capital, LLC
Debt Instrument [Line Items]
Debt instrument amount											$ 600,000,000
Issuance of senior notes, principal amount							$ 200,000,000	$ 400,000,000
Notes issued price percentage at par							100.50%	100.00%
Exchangeable Notes
Debt Instrument [Line Items]
Debt instrument amount				$ 345,000,000							$ 345,000,000
Issuance senior notes, stated percentage				4.00%							4.00%
Debt instrument, maturity date				Jun. 15, 2024							Jun. 15, 2024
Issuance of senior notes, principal amount				$ 345,000,000
Debt instrument, frequency of periodic payment				semiannually in arrears on June 15 and December 15 of each year
Debt Instrument,date of first required payment				Dec. 15, 2019
Debt instrument, indenture exchange rate shares per thousand dollars principal amount				80.4602
Debt instrument, indenture exchange price per share				$ 12.43
Debt instrument, redemption price, percentage				100.00%
Debt Instrument, redemption period, start date				Jun. 20, 2022
Debt instrument, redemption threshold percentage of stock price				130.00%
Debt discount amortized to interest expense effective interest rate				11.10%
Debt issuance costs commissions payable				$ 10,400,000
Debt issuance costs payable to third party				1,400,000
Debt issuance cost attributable to equity component				2,900,000
Equity component value of convertible note issuance, net				$ 80,800,000
Senior Unsecured Notes - 7.875%, 2025
Debt Instrument [Line Items]
Debt instrument amount			$ 2,250,000,000
Issuance senior notes, stated percentage			7.875%
Debt instrument, maturity year			2025
Senior Secured Term Loan B Facility
Debt Instrument [Line Items]
Debt instrument amount												$ 2,044,728,000
Debt instrument, maturity date											Oct. 24, 2022	Oct. 24, 2022
Repayments of debt			$ 2,050,000,000.00
Debt discount amortized to interest expense effective interest rate											5.66%	5.66%
Senior Secured Term Loan B Facility \| CSL Capital, LLC
Debt Instrument [Line Items]
Repayments of debt			2,050,000,000.00
Non-Extended Revolving Credit Facility
Debt Instrument [Line Items]
Debt instrument amount		$ 60,500,000
Debt instrument, maturity date		Apr. 24, 2022
Non-Extended Revolving Credit Facility \| Maximum \| Base Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate											4.25%
Non-Extended Revolving Credit Facility \| Maximum \| Eurodollar
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate											5.25%
Non-Extended Revolving Credit Facility \| Minimum \| Base Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate											3.75%
Non-Extended Revolving Credit Facility \| Minimum \| Eurodollar
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate											4.75%
Non-Extended Revolving Credit Facility \| CSL Capital, LLC
Debt Instrument [Line Items]
Debt instrument amount											$ 60,500,000
Debt instrument, maturity date											Apr. 24, 2022
Extended Revolving Credit Facility
Debt Instrument [Line Items]
Debt instrument amount		$ 500,000,000
Debt instrument, maturity date		Dec. 10, 2024
Extended Revolving Credit Facility \| Maximum \| Base Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate											3.50%
Extended Revolving Credit Facility \| Maximum \| Eurodollar
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate											4.50%
Extended Revolving Credit Facility \| Minimum \| Base Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate											2.75%
Extended Revolving Credit Facility \| Minimum \| Eurodollar
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate											3.75%
Extended Revolving Credit Facility \| CSL Capital, LLC
Debt Instrument [Line Items]
Debt instrument amount											$ 500,000,000
Debt instrument, maturity date											Dec. 10, 2024
Senior Secured Notes - 7.875% Due February 15, 2025
Debt Instrument [Line Items]
Debt instrument amount											$ 2,250,000,000
Issuance senior notes, stated percentage											7.875%	7.875%
Debt instrument, maturity date											Feb. 15, 2025	Feb. 15, 2025
Debt discount amortized to interest expense effective interest rate											8.38%	8.38%
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 of senior notes, principal amount			$ 2,250,000,000
Notes issued price percentage at par			100.00%
6.50% Senior Notes due 2029 \| Operating Partnership, CSL Capital, LLC, Uniti Group Finance 2019 Inc. and Uniti Fiber \| Subsequent Event
Debt Instrument [Line Items]
Issuance senior notes, stated percentage	6.50%
Debt instrument, maturity year	2029
Issuance of senior notes, principal amount	$ 1,110,000,000
Issuance of senior notes, principal amount	$ 58,800,000