Commitments and Contingencies - Additional Information (Details) $ in Millions			9 Months Ended
	Mar. 25, 2022 USD ($)	Oct. 14, 2021 USD ($) payment	Sep. 30, 2022 USD ($) day	Oct. 01, 2020 USD ($) installment
Commitments And Contingencies [Line Items]
Other commitment, number of prepaid installment payments | payment		4
Other commitment, reimbursement default period threshold | day			30
Settlement expense	$ 38.9
SLF Holdings, LLC
Commitments And Contingencies [Line Items]
Settlement expense			$ 38.9
Insurance recovery for settlement expense			38.9
Windstream Commitment
Commitments And Contingencies [Line Items]
Other commitment				$ 490.1
Number of installments | installment				20
Percentage of committed purchase of assets				9.00%
Prepayment of settlement obligations under settlement agreement		$ 92.9
First five quarterly cash payments to be made after emergence			215.4
Windstream Commitment, Growth Capital Improvements
Commitments And Contingencies [Line Items]
Other commitment				$ 1,750.0
Growth capital improvements fund annual limit			250.0
Growth capital improvements reimbursement amount			158.1
New lease, aggregate reimbursements made for certain growth capital improvements			30.6
Lease incentive			$ 0.8
Windstream Commitment, Growth Capital Improvements | Maximum
Commitments And Contingencies [Line Items]
Other commitment, to be paid, remainder of fiscal year				125.0
Other commitment, to be paid, year one				225.0
Other commitment, to be paid, year two				225.0
Other commitment, to be paid, year three				225.0
Other commitment, to be paid, year four				225.0
Other commitment, to be paid, year five				175.0
Other commitment, to be paid, year six				175.0
Other commitment, to be paid, year seven				125.0
Other commitment, to be paid, year eight				125.0
Other commitment, to be paid, year nine				125.0
Windstream Commitments, Growth Capital Improvements, Cost Reimbursements
Commitments And Contingencies [Line Items]
Other commitment				$ 70.0
Windstream Commitments, Equipment Loan and Security Agreements
Commitments And Contingencies [Line Items]
Accrued interest rate for borrowing			8.00%
Windstream Commitments, Equipment Loan and Security Agreements | Maximum
Commitments And Contingencies [Line Items]
Other commitment			$ 125.0
New lease, aggregate reimbursements made for certain growth capital improvements			$ 25.0
Windstream
Commitments And Contingencies [Line Items]
Annual rent adjustment for Growth Capital Funding			8.00%
Rate used for rent percentage			100.50%
Maximum funding rights allocated per year upon transfer of interests under Windstream lease			$ 20.0