Basis of Presentation and Summary of Significant Accounting Policies - Additional Information (Details) - USD ($) $ in Thousands		6 Months Ended
	Jan. 01, 2021	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Summary Of Significant Accounting Policies [Line Items]
Accounting Standards Update Extensible List		unit:AccountingStandardUpdate202006Member
Debt instrument carrying amount		$ 4,970,000		$ 4,965,000
Additional paid-in capital		1,153,707		1,209,141
Cumulative Effect Adjustment for Adoption of New Accounting Standard
Summary Of Significant Accounting Policies [Line Items]
Change in accounting principle, ASU, Adopted	true
Accounting Standards Update Extensible List	unit:AccountingStandardUpdate202006Member
Change in accounting principle, ASU, Transition option elected [Extensible List]	unit:AccountingStandardUpdate202006ModifiedRetrospectiveMember
Change in accounting principle, ASU, Adoption date	Jan. 01, 2021
Additional paid-in capital		(59,900)
Deferred tax liabilities		(15,800)
Retained earnings		$ 14,600
Cumulative Effect Adjustment for Adoption of New Accounting Standard | Exchangeable Senior Unsecured Notes
Summary Of Significant Accounting Policies [Line Items]
Debt instrument carrying amount	$ 336,500			$ 275,400
Increase in carrying amount of debt due to adoption	$ 61,100
Effective interest rate	4.80%			11.10%
Windstream | Revenue
Summary Of Significant Accounting Policies [Line Items]
Windstream leases and the master lease revenue percentage		67.10%	65.20%