Segment Reporting (Reconciliation of Operating Cash Flow to Earnings from Continuing Operations) (Schedule) (Details) - USD ($) $ in Millions		3 Months Ended	12 Months Ended
	Jun. 01, 2021	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Earnings (loss) from continuing operations			$ 1,105.3	$ 13,527.5	$ (1,525.1)
Income tax expense (benefit)			318.9	473.3	(275.9)
Other income, net			(134.4)	(44.9)	(76.2)
Share of results of affiliates, net			1,267.8	175.4	245.3
Losses (gains) on debt extinguishment, net			(2.8)	90.6	233.2
Realized and unrealized losses (gains) due to changes in fair values of certain investments, net			302.1	(735.0)	(45.2)
Foreign currency transaction losses (gains), net			(1,407.2)	(1,324.5)	1,409.3
Realized and unrealized losses (gains) on derivative instruments, net			(1,191.7)	(622.9)	878.7
Interest expense			589.3	882.1	1,186.8
Operating income			146.8	1,320.3	2,030.9
Impairment, restructuring and other operating items, net			85.1	(19.0)	97.4
Depreciation and amortization			2,171.4	2,353.7	2,227.2
Share-based compensation expense			192.1	308.1	348.0
Adjusted EBITDA			2,595.4	3,963.1	4,703.5
AtlasEdge JV
Segment Reporting Information [Line Items]
Gain (adjustment to gain) on JV Transaction		$ (227.5)	0.0	(227.5)	0.0
Share of results of affiliates, net			23.3	5.8	0.0
U.K. JV Transaction
Segment Reporting Information [Line Items]
Gain (adjustment to gain) on JV Transaction	$ (10,873.8)		0.0	(10,873.8)	0.0
Telenet
Segment Reporting Information [Line Items]
Gain (adjustment to gain) on JV Transaction			$ (700.5)	$ 0.0	$ 0.0