Segment Reporting (Narrative) (Details)	3 Months Ended
	Mar. 31, 2025 platform
Segment Reporting Information [Line Items]
Number of strategic platforms	3
Performance measures percentage of segment revenue and operating cash flow presented	100.00%
VMO2 JV
Segment Reporting Information [Line Items]
Ownership percentage	50.00%
VodafoneZiggo JV
Segment Reporting Information [Line Items]
Ownership percentage	50.00%