v3.26.1
Notes and Other Debt, Net - Windstream Credit Agreement (Narrative) (Details) - USD ($)
$ in Millions
3 Months Ended
Oct. 06, 2025
Mar. 31, 2026
Feb. 04, 2026
Dec. 31, 2025
Debt Instrument [Line Items]        
Total principal amount   $ 10,683.1   $ 9,540.5
Senior Secured Windstream Term Loan - Variable Rate, Due October 1, 2031        
Debt Instrument [Line Items]        
Total principal amount   $ 0.0   $ 500.0
Effective interest rate   9.15%    
Senior Secured Windstream Term Loan - Variable Rate, Due October 1, 2031 | 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 | 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 | 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 | Minimum | Secured Overnight Financing Rate (SOFR)        
Debt Instrument [Line Items]        
Debt instrument, basis spread on variable rate   3.75%    
Senior Secured Windstream Term Loan - Variable Rate, Due October 1, 2031 | 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 | Maximum | Secured Overnight Financing Rate (SOFR)        
Debt Instrument [Line Items]        
Debt instrument, basis spread on variable rate   4.50%    
New Seven-Year Term Loan Facility        
Debt Instrument [Line Items]        
Debt instrument, term 7 years      
Aggregate principal amount $ 1,000.0      
Redemption price, percentage   1.00%    
Weighted average interest rate   7.69%    
New Seven-Year Term Loan Facility | Base Rate        
Debt Instrument [Line Items]        
Debt instrument, basis spread on variable rate   4.00%    
New Seven-Year Term Loan Facility | Adjusted Term SOFR        
Debt Instrument [Line Items]        
Debt instrument, basis spread on variable rate   3.00%    
Interest rate during period   0.00%    
New Seven-Year Term Loan Facility | Minimum        
Debt Instrument [Line Items]        
Effective interest rate   7.67%    
New Seven-Year Term Loan Facility | Maximum        
Debt Instrument [Line Items]        
Effective interest rate   7.72%    
Windstream Credit Agreement        
Debt Instrument [Line Items]        
Remaining borrowing capacity   $ 362.3    
Weighted average interest rate   8.05%    
Line of credit, maximum borrowing capacity   $ 25.0    
Repayments of lines of credit   340.0    
Letters of credit outstanding   $ 112.7    
Covenant maximum leverage ratio   0.0500    
Percentage of voting capital stock   0.65    
Percentage of non voting capital stock   1    
Windstream Credit Agreement | Minimum        
Debt Instrument [Line Items]        
Effective interest rate   7.78%    
Windstream Credit Agreement | Maximum        
Debt Instrument [Line Items]        
Effective interest rate   10.00%    
Windstream Credit Agreement | Revolving Credit Facility Capacity Through January 23, 2027        
Debt Instrument [Line Items]        
Remaining borrowing capacity 475.0      
Windstream Credit Agreement | Revolving Credit Facility Capacity Through December 30, 2027        
Debt Instrument [Line Items]        
Remaining borrowing capacity $ 425.0      
Windstream Term Loan        
Debt Instrument [Line Items]        
Quarterly amortization payments, percentage   25.00%    
Mandatory prepayment percentage   100.00%    
Variable rate, additional step-down   50.00%    
Minimum fixed charge coverage ratio   1.50%    
Maximum fixed charge coverage ratio   1.00%    
Percentage of first lien senior secured leverage ratio   0.00%    
Maximum required first lien secured leverage ratio   1.00%    
Prepayment percentage of net cash proceeds received   100.00%    
Weighted average interest rate     8.56%  
Windstream Term Loan | Minimum        
Debt Instrument [Line Items]        
Effective interest rate     8.52%  
Windstream Term Loan | Maximum        
Debt Instrument [Line Items]        
Effective interest rate     8.57%