Earnings (Loss) per Share (Net Earnings (Loss) From Continuing Operations) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Earnings Per Share [Abstract]
Earnings (loss) from continuing operations	$ (713.5)	$ 1,075.7
Net earnings from continuing operations attributable to noncontrolling interests	(7.9)	(72.0)
Net earnings (loss) from continuing operations attributable to Liberty Global shareholders	$ (721.4)	$ 1,003.7