Debt and Finance Lease Obligations - Maturities of Debt (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
2018	$ 178.2
2019	127.0
2020	112.4
2021	389.0
2022	1,740.3
Thereafter	5,965.6
Total debt maturities	8,512.5	$ 6,710.7
Premiums, discounts and deferred financing costs, net (d)	(146.1)	(41.5)
Total carrying amount of debt	8,366.4	$ 6,669.2
Current portion	178.2
Noncurrent portion	8,188.2
C&W
Debt Instrument [Line Items]
2018	84.3
2019	126.5
2020	18.0
2021	125.7
2022	77.3
Thereafter	3,765.6
Total debt maturities	4,197.4
Premiums, discounts and deferred financing costs, net (d)	(22.7)
Total carrying amount of debt	4,174.7
Current portion	84.3
Noncurrent portion	4,090.4
VTR Finance
Debt Instrument [Line Items]
2018	93.6
2019	0.0
2020	93.7
2021	137.7
2022	1,260.0
Thereafter	0.0
Total debt maturities	1,585.0
Premiums, discounts and deferred financing costs, net (d)	(18.4)
Total carrying amount of debt	1,566.6
Current portion	93.6
Noncurrent portion	1,473.0
Liberty Puerto Rico
Debt Instrument [Line Items]
2018	0.0
2019	0.0
2020	0.0
2021	0.0
2022	0.0
Thereafter	2,200.0
Total debt maturities	2,200.0
Premiums, discounts and deferred financing costs, net (d)	(27.0)
Total carrying amount of debt	2,173.0
Current portion	0.0
Noncurrent portion	2,173.0
Cabletica
Debt Instrument [Line Items]
2018	0.0
2019	0.0
2020	0.0
2021	124.8
2022	0.0
Thereafter	0.0
Total debt maturities	124.8
Premiums, discounts and deferred financing costs, net (d)	(2.7)
Total carrying amount of debt	122.1
Current portion	0.0
Noncurrent portion	122.1
Liberty Latin America
Debt Instrument [Line Items]
2018	0.3
2019	0.5
2020	0.7
2021	0.8
2022	403.0
Thereafter	0.0
Total debt maturities	405.3
Premiums, discounts and deferred financing costs, net (d)	(75.3)
Total carrying amount of debt	330.0
Current portion	0.3
Noncurrent portion	$ 329.7

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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