Equity (Schedule of Outstanding Share-Based Compensation Awards) (Details)	Dec. 31, 2016 shares
Options | Class A Ordinary Shares | Liberty Global Group [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards outstanding (in shares)	707,293
Options | Class A Ordinary Shares | LiLAC Group [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards outstanding (in shares)	82,818
Options | Class B Ordinary Shares | Liberty Global Group [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards outstanding (in shares)	0
Options | Class B Ordinary Shares | LiLAC Group [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards outstanding (in shares)	0
Options | Class C Ordinary Shares | Liberty Global Group [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards outstanding (in shares)	2,754,480
Options | Class C Ordinary Shares | LiLAC Group [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards outstanding (in shares)	212,602
SARs and PSARs | Class A Ordinary Shares | Liberty Global Group [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards outstanding (in shares)	13,182,578
SARs and PSARs | Class A Ordinary Shares | LiLAC Group [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards outstanding (in shares)	1,973,135
SARs and PSARs | Class B Ordinary Shares | Liberty Global Group [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards outstanding (in shares)	0
SARs and PSARs | Class B Ordinary Shares | LiLAC Group [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards outstanding (in shares)	0
SARs and PSARs | Class C Ordinary Shares | Liberty Global Group [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards outstanding (in shares)	32,139,764
SARs and PSARs | Class C Ordinary Shares | LiLAC Group [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards outstanding (in shares)	4,757,017
PSUs, PGUs, RSUs | Class A Ordinary Shares | Liberty Global Group [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Other than options (in shares)	3,649,647
PSUs, PGUs, RSUs | Class A Ordinary Shares | LiLAC Group [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Other than options (in shares)	550,359
PSUs, PGUs, RSUs | Class B Ordinary Shares | Liberty Global Group [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Other than options (in shares)	333,334
PSUs, PGUs, RSUs | Class B Ordinary Shares | LiLAC Group [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Other than options (in shares)	58,256
PSUs, PGUs, RSUs | Class C Ordinary Shares | Liberty Global Group [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Other than options (in shares)	6,652,584
PSUs, PGUs, RSUs | Class C Ordinary Shares | LiLAC Group [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Other than options (in shares)	1,000,190