Commitments and Contingencies - Additional Information (Details) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2021 USD ($) Installment	Dec. 31, 2020 USD ($)
Commitments And Contingencies [Line Items]
Obligations under tax matters agreement	$ 0
Windstream
Commitments And Contingencies [Line Items]
Cash payment in equal installments emergence from bankruptcy	$ 490,100
Number of installments | Installment	20
First three quarterly cash payments to be made after emergence	$ 98,000
Agreement to invest growth capital improvements	1,750,000
Growth Capital Improvements except maintenance or repair expenditures and expenditures towards cost incurred for fiber replacements	70,000
Annual reimbursement commitment payments due year one through four	225,000
Annual reimbursement commitment payments, due year five	175,000
Annual reimbursement commitment payments, due year six	175,000
Annual reimbursement commitment payments, due year seven through nine	125,000
Growth capital improvements fund annual limit	250,000
Growth capital improvements funded during the period		$ 84,700
Growth capital improvements reimbursement amount	92,100
New lease, aggregate reimbursements made for certain growth capital improvements	28,500
Windstream | Other Assets
Commitments And Contingencies [Line Items]
Lease incentive	900
Windstream | Maximum
Commitments And Contingencies [Line Items]
Commitment amount	265,300
Separate Equipment Loan Facilities
Commitments And Contingencies [Line Items]
Annual reimbursement commitment payments due year one through four	225,000
Annual reimbursement commitment payments, due year five	175,000
Annual reimbursement commitment payments, due year six	175,000
Annual reimbursement commitment payments, due year seven through nine	$ 125,000