SCHEDULE I (Parent Company Information) CONDENSED STATEMENT OF CASH FLOWS (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
Cash flows from operating activities:
Net earnings (loss)			$ (4,051.7)	$ 1,473.2	$ 13,426.8
Adjustments to reconcile net earnings (loss) to net cash used by operating activities:
Share-based compensation expense			231.0	192.1	308.1
Depreciation and amortization			2,315.2	2,171.4	2,353.7
Realized and unrealized gains (losses) on derivative instruments, net (note 8)			526.3	(1,213.1)	(537.3)
Foreign currency transaction losses (gains), net			70.8	(1,407.2)	(1,324.5)
Deferred income tax expense (benefit)			(33.1)	172.5	318.2
Changes in operating assets and liabilities:
Payables and accruals			(1,194.2)	(755.9)	(872.3)
Net cash provided by operating activities			2,165.9	2,837.8	3,549.0
Cash flows from investing activities:
Cash released from the Vodafone Escrow Accounts, net			0.0	6.5	214.9
Other investing activities, net			(17.3)	0.0	(96.7)
Net cash provided (used) by investing activities			(1,845.0)	1,281.0	(5,796.5)
Cash flows from financing activities:
Repurchases of Liberty Global common shares			(1,494.7)	(1,703.4)	(1,580.4)
Borrowings of third-party debt			3,167.0	4.7	2,570.7
Other financing activities, net			(62.8)	(117.2)	(121.4)
Net cash used by financing activities			(692.4)	(3,276.0)	(1,545.9)
Effect of exchange rate changes on cash and cash equivalents and restricted cash			62.0	(27.7)	(6.6)
Total			(309.5)	815.1	(3,800.0)
Details of end of year cash and cash equivalents and restricted cash:
Cash and cash equivalents	$ 1,415.9		1,415.9	1,726.2	910.6
Liberty Global Plc
Cash flows from operating activities:
Net earnings (loss)	(2,999.6)	$ (1,052.1)		1,473.2	13,426.8
Adjustments to reconcile net earnings (loss) to net cash used by operating activities:
Equity in earnings of consolidated subsidiaries, net	2,998.7	(581.4)		(2,726.4)	(14,530.5)
Share-based compensation expense		55.1		28.4	49.4
Related-party fees and allocations		233.9		239.3	182.5
Depreciation and amortization		1.0		1.2	1.4
Realized and unrealized gains (losses) on derivative instruments, net (note 8)		(26.5)		(61.5)	(9.0)
Foreign currency transaction losses (gains), net		(46.5)		(274.8)	(317.7)
Deferred income tax expense (benefit)		(0.5)		0.0	15.1
Changes in operating assets and liabilities:
Receivables and other operating assets		(25.5)		138.5	85.3
Payables and accruals	0.9	1,135.6		654.7	709.9
Net cash provided by operating activities	0.0	(306.9)		(527.4)	(386.8)
Cash flows from investing activities:
Distributions and repayments from (investments in and advances to) consolidated subsidiaries, net		(401.0)		22.4	(274.8)
Net cash received related to derivative instruments		0.0		50.0	0.0
Cash released from the Vodafone Escrow Accounts, net		0.0		6.5	214.9
Other investing activities, net		0.0		0.0	(0.1)
Net cash provided (used) by investing activities	0.0	(401.0)		78.9	(60.0)
Cash flows from financing activities:
Borrowings of related-party debt		2,206.1		2,187.8	2,445.3
Repayments of related-party debt		(106.2)		(26.5)	(443.3)
Capital contributions from consolidated subsidiaries	107.4
Repurchases of Liberty Global common shares	(107.4)	(1,387.3)		(1,703.4)	(1,580.4)
Proceeds from the issuance of Liberty Global shares upon exercise of options		1.2		13.0	8.9
Other financing activities, net		(6.2)		(20.8)	(15.3)
Net cash used by financing activities	0.0	707.6		450.1	415.2
Effect of exchange rate changes on cash and cash equivalents and restricted cash		(0.7)		(1.5)	0.1
Total	0.0	(1.0)		0.1	(31.5)
Cash and cash equivalents and restricted cash:
Beginning of period	0.0	6.9	6.9	6.8	38.3
End of period	0.0	5.9	0.0	6.9	6.8
Details of end of year cash and cash equivalents and restricted cash:
Cash and cash equivalents		0.7		1.8	1.7
Restricted cash included in other current assets		5.2		5.1	5.1
Total cash and cash equivalents and restricted cash	$ 0.0	$ 5.9	$ 0.0	$ 6.9	$ 6.8