Leases (Maturities of Operating and Financing Lease Liabilities) (Details) - USD ($) $ in Millions	Mar. 31, 2025	Dec. 31, 2024
Operating leases (a)
2025 (remainder of year)	$ 83.5
2026	103.6
2027	91.9
2028	84.8
2029	81.0
2030	80.1
Thereafter	519.5
Total payments	1,044.4
Less: present value discount	(270.4)
Present value of lease payments	774.0	$ 753.1
Current portion	79.3
Long-term portion	694.7	677.5
Finance leases
2025 (remainder of year)	7.8
2026	8.5
2027	7.0
2028	4.0
2029	2.8
2030	1.6
Thereafter	11.8
Total payments	43.5
Less: present value discount	(9.4)
Present value of lease payments	34.1	$ 34.1
Current portion	7.6
Long-term portion	26.5
Total	3,024.8
Unrecorded Unconditional Purchase Obligation [Line Items]
Total	3,024.8
Telenet
Finance leases
Total	84.3
Unrecorded Unconditional Purchase Obligation [Line Items]
Total	$ 84.3