SCHEDULE I (Parent Company Information) CONDENSED STATEMENT OF OPERATIONS (Details) - USD ($) $ in Millions	1 Months Ended	11 Months Ended	12 Months Ended
	Dec. 31, 2023	Nov. 22, 2023	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Operating Costs and Expenses [Abstract]
Selling, General and Administrative Expense			$ 1,761.0	$ 1,618.5	$ 2,154.1
Depreciation and amortization			2,315.2	2,171.4	2,353.7
Operating income (loss)			(244.5)	146.8	1,320.3
Non-operating income (expense):
Interest expense			907.9	589.3	882.1
Foreign currency transaction gains (losses), net			(70.8)	1,407.2	1,324.5
Realized and unrealized gains (losses) on derivative instruments, net (note 8)			(526.3)	1,213.1	537.3
Other income, net			225.5	134.4	44.9
Non-operating income (expense)			(3,479.7)	1,277.4	12,680.5
Income tax benefit (expense)			(149.6)	(318.9)	(473.3)
Net earnings (loss)			$ (4,051.7)	1,473.2	13,426.8
Liberty Global Plc
Operating Costs and Expenses [Abstract]
Selling, General and Administrative Expense	$ 0.6	$ 89.6		55.7	77.6
Related-party fees and allocations		233.9		239.3	182.5
Depreciation and amortization		1.0		1.2	1.4
Operating income (loss)	(0.6)	(324.5)		(296.2)	(261.5)
Non-operating income (expense):
Foreign currency transaction gains (losses), net		46.5		274.8	317.7
Realized and unrealized gains (losses) on derivative instruments, net (note 8)		26.5		61.5	9.0
Other income, net		0.2		0.3	0.1
Non-operating income (expense)	(0.3)	(1,309.5)		(957.0)	(827.1)
Loss before income taxes and equity in earnings of consolidated subsidiaries, net	(0.9)	(1,634.0)		(1,253.2)	(1,088.6)
Equity in earnings of consolidated subsidiaries, net	(2,998.7)	581.4		2,726.4	14,530.5
Income tax benefit (expense)		0.5		0.0	(15.1)
Net earnings (loss)	(2,999.6)	(1,052.1)		1,473.2	13,426.8
Liberty Global Plc | Related Party
Non-operating income (expense):
Interest expense	$ (0.3)	1,395.5		1,308.7	1,185.6
Other Nonoperating Income		$ 12.8		$ 15.1	$ 31.7