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Financial Risk Management - Summary of Details of Financial Assets and Liabilities in Foreign Currencies (Detail)
€ in Thousands, ₫ in Thousands, ฿ in Thousands, ¥ in Thousands, ¥ in Thousands, £ in Thousands, zł in Thousands, XDR in Thousands, XAF in Thousands, Tsh in Thousands, SFr in Thousands, P in Thousands, FRw in Thousands, $ in Thousands, $ in Thousands, $ in Thousands, $ in Thousands, ₩ in Millions, лв in Millions, RM in Millions
Dec. 31, 2022
USD ($)
Dec. 31, 2022
XDR
Dec. 31, 2022
JPY (¥)
Dec. 31, 2022
GBP (£)
Dec. 31, 2022
EUR (€)
Dec. 31, 2022
RWF (FRw)
Dec. 31, 2022
THB (฿)
Dec. 31, 2022
TZS (Tsh)
Dec. 31, 2022
BWP (P)
Dec. 31, 2022
HKD ($)
Dec. 31, 2022
VND (₫)
Dec. 31, 2022
SGD ($)
Dec. 31, 2022
MYR (RM)
Dec. 31, 2022
BGN (лв)
Dec. 31, 2022
KRW (₩)
Dec. 31, 2021
USD ($)
Dec. 31, 2021
XDR
Dec. 31, 2021
JPY (¥)
Dec. 31, 2021
GBP (£)
Dec. 31, 2021
EUR (€)
Dec. 31, 2021
RWF (FRw)
Dec. 31, 2021
THB (฿)
Dec. 31, 2021
TZS (Tsh)
Dec. 31, 2021
BWP (P)
Dec. 31, 2021
HKD ($)
Dec. 31, 2021
VND (₫)
Dec. 31, 2021
SGD ($)
Dec. 31, 2021
TWD ($)
Dec. 31, 2021
CHF (SFr)
Dec. 31, 2021
KRW (₩)
Dec. 31, 2020
USD ($)
Dec. 31, 2020
XDR
Dec. 31, 2020
JPY (¥)
Dec. 31, 2020
EUR (€)
Dec. 31, 2020
CNY (¥)
Dec. 31, 2020
RWF (FRw)
Dec. 31, 2020
THB (฿)
Dec. 31, 2020
TZS (Tsh)
Dec. 31, 2020
BWP (P)
Dec. 31, 2020
HKD ($)
Dec. 31, 2020
PLN (zł)
Dec. 31, 2020
VND (₫)
Dec. 31, 2020
XAF
Dec. 31, 2020
SGD ($)
Disclosure of detailed information about financial instruments [line items]                                                                                        
Financial assets                             ₩ 13,766,638                             ₩ 11,129,720                            
Financial liabilities                             ₩ 18,825,390                             ₩ 16,915,572                            
Currency risk [Member]                                                                                        
Disclosure of detailed information about financial instruments [line items]                                                                                        
Financial assets $ 106,426 XDR 255 ¥ 32,801 £ 30 € 185 FRw 15,521 ฿ 265 Tsh 1,464 P 183 $ 37 ₫ 280,226 $ 448 RM 1 лв 62   $ 245,759 XDR 255 ¥ 29,227   € 3,943 FRw 586 ฿ 2,160 Tsh 1,644 P 93   ₫ 257,895 $ 13       $ 400,046 XDR 255 ¥ 209,376 € 316 ¥ 458 FRw 646 ฿ 535 Tsh 1,019 P 212   zł 26 ₫ 242,370 XAF 16,229 $ 6
Financial liabilities $ 2,336,607 XDR 722 ¥ 400,002 £ 83 € 7,832 FRw 13,025           $ 284,000       $ 2,302,642 XDR 722 ¥ 30,000,763 £ 1,005 € 10,801         $ 105   $ 284,000 $ 226 SFr 161   $ 1,937,935 XDR 728 ¥ 46,000,009 € 162 ¥ 491         $ 198       $ 284,000