v3.26.3
Acquisitions and Dispositions (Fair Value of Consideration Transferred) (Details)
€ in Millions, $ in Millions
3 Months Ended
Jul. 31, 2026
EUR (€)
shares
Jul. 31, 2026
USD ($)
shares
Sep. 30, 2026
USD ($)
Wyre      
Business Combination [Line Items]      
Ownership percentage     66.80%
Wyre | Ziggo Group      
Business Combination [Line Items]      
Ownership percentage     66.80%
VodafoneZiggo JV      
Business Combination [Line Items]      
Cash consideration paid at closing € 1,000.0 $ 1,125.8  
Fair value of 10% equity interest in Ziggo Group issued to Vodafone 479.9 552.7  
Fair value of off-market component of certain arrangements payable to Vodafone 169.1 194.8  
Total purchase consideration 1,626.5 1,873.3  
Fair value of previously held equity investment in VodafoneZiggo € 1,552.4 $ 1,787.9  
Interest acquired 50.00% 50.00%  
VodafoneZiggo JV | Liberty Global      
Business Combination [Line Items]      
Interest acquired 50.00% 50.00%  
Business combination, achieved in stages, preacquisition equity interest in acquiree, percentage 50.00% 50.00%  
VodafoneZiggo JV | Class B      
Business Combination [Line Items]      
Business combination, achieved in stages, preacquisition noncontrolling equity interest in acquiree, percentage 10.00% 10.00%  
Business combination, consideration transferred, equity interests issued and issuable, entity shares issued per acquiree share | shares 1,959,697,247 1,959,697,247  
VodafoneZiggo Acquisition      
Business Combination [Line Items]      
Interest acquired 100.00% 100.00%  
Gain associated transaction | $     $ 121.6
VodafoneZiggo Acquisition | Liberty Global      
Business Combination [Line Items]      
Interest acquired 10.00% 10.00%