CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Statement of Comprehensive Income [Abstract]
Net earnings (loss)	$ 822.7	$ 2,431.7	$ (402.1)	$ 6,673.1
Other comprehensive loss, net of taxes:
Foreign currency translation adjustments	(1,485.1)	(3,266.3)	(289.8)	(7,174.5)
Reclassification adjustments included in net earnings (loss)	(0.5)	(1.1)	(1.1)	(3.3)
Pension-related adjustments and other	(1.0)	0.2	(7.9)	21.3
Other comprehensive loss from continuing operations	(1,486.6)	(3,267.2)	(298.8)	(7,156.5)
Other comprehensive loss from discontinued operations (note 4)	0.0	0.0	0.0	(44.4)
Other comprehensive loss	(1,486.6)	(3,267.2)	(298.8)	(7,200.9)
Comprehensive loss	(663.9)	(835.5)	(700.9)	(527.8)
Comprehensive earnings attributable to noncontrolling interests	(162.3)	(83.7)	(159.1)	(508.0)
Comprehensive loss attributable to Liberty Global shareholders	$ (826.2)	$ (919.2)	$ (860.0)	$ (1,035.8)