SCHEDULE I (Parent Company Information) CONDENSED BALANCE SHEETS (Details) - USD ($) $ in Millions	Dec. 31, 2018	Jan. 01, 2018	Dec. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 1,480.5		$ 1,672.4	$ 1,076.6
Other current assets	396.7	$ 427.8	351.2
Total current assets	4,141.4		4,331.6
Total assets	53,153.6		57,596.8
Current liabilities:
Accounts payable	874.3		926.0
Accrued liabilities and other	2,458.8	2,220.2	2,219.0
Total current liabilities	10,306.1		9,965.8
Other long-term liabilities	2,436.8	2,249.3	2,246.6
Total liabilities	49,005.3		51,203.8
Commitments and contingencies
Additional paid-in capital	9,214.5		11,358.6
Accumulated deficit	(5,172.2)	$ (5,897.5)	(6,217.6)
Accumulated other comprehensive earnings, net of taxes	631.8		1,656.0
Treasury shares, at cost	(0.1)		(0.1)
Total stockholders’ equity	4,681.4		6,805.0
Total liabilities and equity	53,153.6		57,596.8
Liberty Global Plc
Current assets:
Cash and cash equivalents	10.8		73.2	$ 58.9
Interest receivables — related-party	0.0		1.8
Other receivables — related-party	13.0		44.6
Other current assets	7.0		5.8
Total current assets	30.8		125.4
Long-term notes receivable — related-party	1,215.5		975.8
Investments in consolidated subsidiaries, including intercompany balances	20,829.5		17,472.6
Other assets, net	13.7		17.8
Total assets	22,089.5		18,591.6
Current liabilities:
Accounts payable	3.5		0.9
Other payables — related-party	26.4		68.7
Current portion of notes payable — related-party	3,033.3		2,834.7
Accrued liabilities and other	9.1		5.6
Total current liabilities	3,072.3		2,909.9
Long-term notes payable — related-party	14,332.5		7,884.1
Other long-term liabilities — related-party	0.0		989.9
Other long-term liabilities	3.3		2.7
Total liabilities	17,408.1		11,786.6
Commitments and contingencies
Total stockholders’ equity	4,681.4		6,805.0
Total liabilities and equity	22,089.5		18,591.6
Class A
Current liabilities:
Common stock	2.0		2.2
Class B
Current liabilities:
Common stock	0.1		0.1
Class C
Current liabilities:
Common stock	$ 5.3		$ 5.8