v3.26.1
Intangible Assets - Details of the Changes in Intangible Assets (Detail) - KRW (₩)
₩ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Disclosure of detailed information about intangible assets [line items]    
Beginning balance ₩ 2,194,871 ₩ 2,861,137
Acquisition 116,712 73,422
Disposal (5,763) (21,910)
Transfer 209,961 [1] 208,592 [2]
Amortization (803,229) (843,378)
Impairment (1,934) [3] (82,743) [4]
Changes in consolidation scope   (249)
Other changes [5] 2  
Ending balance 1,710,620 2,194,871
Frequency usage rights [member]    
Disclosure of detailed information about intangible assets [line items]    
Beginning balance 1,135,546 [6] 1,606,606
Amortization (471,060) (471,060)
Ending balance [6] 664,486 1,135,546
Land usage rights [member]    
Disclosure of detailed information about intangible assets [line items]    
Beginning balance 309 587
Acquisition 96 69
Disposal   (5)
Amortization (156) (342)
Ending balance 249 309
Industrial rights [member]    
Disclosure of detailed information about intangible assets [line items]    
Beginning balance 20,173 46,154
Acquisition 3,976 6,578
Disposal   (241)
Transfer [2]   (1)
Amortization (4,579) (4,962)
Impairment [4]   (27,340)
Changes in consolidation scope   (15)
Ending balance 19,570 20,173
Development costs [member]    
Disclosure of detailed information about intangible assets [line items]    
Beginning balance 27 49
Amortization (19) (22)
Ending balance 8 27
Facility usage rights [member]    
Disclosure of detailed information about intangible assets [line items]    
Beginning balance 13,314 14,313
Acquisition 848 1,477
Disposal (2) (3)
Transfer 381 [1] 618 [2]
Amortization (2,821) (3,091)
Ending balance 11,720 13,314
Customer relations [member]    
Disclosure of detailed information about intangible assets [line items]    
Beginning balance 246,119 273,150
Amortization (27,025) (27,031)
Ending balance 219,094 246,119
Club memberships [member]    
Disclosure of detailed information about intangible assets [line items]    
Beginning balance 78,618 [7] 97,186
Acquisition 6,580 3,700
Disposal (3,900) (20,065)
Transfer (2,542) [1] (1,727) [2]
Impairment (1,295) [3] (476) [4]
Ending balance [7] 77,461 78,618
Other [member]    
Disclosure of detailed information about intangible assets [line items]    
Beginning balance 700,765 [8] 823,092
Acquisition 105,212 61,598
Disposal (1,861) (1,596)
Transfer 212,122 [1] 209,702 [2]
Amortization (297,569) (336,870)
Impairment (639) [3] (54,927) [4]
Changes in consolidation scope   (234)
Other changes [5] 2  
Ending balance [8] ₩ 718,032 ₩ 700,765
[1] The Group decided to dispose of the shares of SK stoa Co., Ltd. and Media S Co., Ltd., the consolidated subsidiaries, and reclassified the intangible assets amounting to ₩17,795 million of SK stoa Co., Ltd. and Media S Co., Ltd., as assets held for sale. (See note 39)
[2] The Group decided to dispose of the shares of NATE Communications Corporation (formerly, SK Communications Co., Ltd.) and SK m&service Co., Ltd., the consolidated subsidiaries, and reclassified the intangible assets amounting to ₩5,655 million of NATE Communications Corporation (formerly, SK Communications Co., Ltd.) and SK m&service Co., Ltd. as assets held for sale. (See note 39)
[3] The Group recognized the difference between recoverable amount and the carrying amount of intangible assets amounting to ₩1,934 million as impairment loss for the year ended December 31, 2025.
[4] The Group recognized the difference between recoverable amount and the carrying amount of intangible assets amounting to ₩82,743 million as impairment loss for the year ended December 31, 2024.
[5] Other changes consist of increases in assets arising from business combinations under common control. (See note 40)
[6] The Parent Company was reassigned 800 MHz, 1.8 GHz and 2.1 GHz band of frequency licenses from the Ministry of Science and Information and Communication Technology (“ICT”) in exchange for ₩227,200 million, ₩547,800 million and ₩411,700 million, respectively, for the year ended December 31, 2021. The band of frequency was assigned to the Parent Company at the date of initial lump sum payment for the year ended December 31, 2021 and the annual payments in installment for the remaining balances are made in the next five years starting from the date of initial lump sum payment.
[7] Club memberships are classified as intangible assets with indefinite useful lives and are not amortized.
[8] Other intangible assets primarily consist of computer software and others.