Contract assets and liabilities (Tables)

12 Months Ended

Dec. 31, 2018

Text block [abstract]

Schedule of Contract Assets and Liabilities

Details of contract assets and liabilities as of December 31, 2018 and January 1, 2018 are as follows:

(In millions of won)
	December 31, 2018		January 1, 2018
Contract assets:
Allocation of consideration between performance obligations	￦	133,893		143,053
Contract liabilities:
Wireless service contracts		18,425		16,624
Customer loyalty programs		17,113		10,739
Fixed-line service contracts		57,327		47,125
Commerce services		10		10
Security services (note 12)		38,109		—
Others		52,829		58,886
	￦	183,813		133,384