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Notes and Other Debt, Net - Uniti Credit Agreement (Narrative) (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2025
Sep. 30, 2024
Dec. 31, 2024
Debt Instrument [Line Items]        
Total principal amount $ 9,261.5 $ 9,261.5   $ 5,861.5
CSL Capital, LLC        
Debt Instrument [Line Items]        
Debt instrument, debt default, amount $ 75.0 $ 75.0    
Maximum        
Debt Instrument [Line Items]        
Debt instrument, covenant, secured leverage ratio 4.00% 4.00%    
Consolidated total leverage ratio 6.50% 6.50%    
Maximum | CSL Capital, LLC        
Debt Instrument [Line Items]        
Debt instrument, covenant, secured leverage ratio 5.00% 5.00%    
Maximum | Pro Forma        
Debt Instrument [Line Items]        
Debt instrument, covenant, secured leverage ratio 4.00% 4.00%    
Extended Revolving Credit Facility        
Debt Instrument [Line Items]        
Total principal amount $ 500.0 $ 500.0    
Interest rate during period 8.45% 8.47%    
Extended Revolving Credit Facility | Maximum        
Debt Instrument [Line Items]        
Debt instrument, basis spread on variable rate   8.71%    
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 | Secured Overnight Financing Rate (SOFR)        
Debt Instrument [Line Items]        
Debt instrument, basis spread on variable rate   4.50%    
Extended Revolving Credit Facility | Minimum        
Debt Instrument [Line Items]        
Debt instrument, basis spread on variable rate   8.02%    
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 | Secured Overnight Financing Rate (SOFR)        
Debt Instrument [Line Items]        
Debt instrument, basis spread on variable rate   3.75%    
Senior secured revolving credit facility - variable rate        
Debt Instrument [Line Items]        
Commitment fee percentage of average amount of unused commitments   0.50%    
Commitment fee step-down percentage of average amount of unused commitments   0.40%    
Uniti Credit Agreement        
Debt Instrument [Line Items]        
Line of credit, maximum borrowing capacity $ 429.0 $ 429.0 $ 130.0  
Repayments of lines of credit   148.0 $ 130.0  
Letters of credit outstanding 0.3 0.3    
Remaining borrowing capacity 218.7 218.7    
Senior secured Windstream term loan - variable rate, due October 1, 2031 (premium is based on imputed interest rate of 9.15%)        
Debt Instrument [Line Items]        
Total principal amount $ 500.0 $ 500.0   $ 0.0
Senior secured Windstream term loan - variable rate, due October 1, 2031 (premium is based on imputed interest rate of 9.15%) | Base Rate        
Debt Instrument [Line Items]        
Debt instrument, basis spread on variable rate   4.75%    
Senior secured Windstream term loan - variable rate, due October 1, 2031 (premium is based on imputed interest rate of 9.15%) | Adjusted Term SOFR        
Debt Instrument [Line Items]        
Debt instrument, basis spread on variable rate   3.75%    
Interest rate during period   0.00%    
Senior secured Windstream term loan - variable rate, due October 1, 2031 (premium is based on imputed interest rate of 9.15%) | Maximum | Base Rate        
Debt Instrument [Line Items]        
Debt instrument, basis spread on variable rate   3.50%    
Senior secured Windstream term loan - variable rate, due October 1, 2031 (premium is based on imputed interest rate of 9.15%) | Maximum | Secured Overnight Financing Rate (SOFR)        
Debt Instrument [Line Items]        
Debt instrument, basis spread on variable rate   4.50%    
Senior secured Windstream term loan - variable rate, due October 1, 2031 (premium is based on imputed interest rate of 9.15%) | Minimum | Base Rate        
Debt Instrument [Line Items]        
Debt instrument, basis spread on variable rate   2.75%    
Senior secured Windstream term loan - variable rate, due October 1, 2031 (premium is based on imputed interest rate of 9.15%) | Minimum | Secured Overnight Financing Rate (SOFR)        
Debt Instrument [Line Items]        
Debt instrument, basis spread on variable rate   3.75%