Earnings or Loss per Share (Net Earnings (Loss) From Continuing Operations) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Earnings Per Share [Abstract]
Earnings from continuing operations	$ 1,075.7	$ 1,422.7
Net earnings from continuing operations attributable to noncontrolling interests	(72.0)	(54.9)
Net earnings attributable to Liberty Global shareholders	$ 1,003.7	$ 1,367.8