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General Information - Details of Subsidiaries (Detail) - KRW (₩) ₩ in Millions | 12 Months Ended |
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Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |
Assets |  | ₩ 105,287,678 |  | ₩ 103,443,735 |  |  |  |
Liabilities |  | 42,894,966 |  | 42,000,967 |  |  |  |
Equity |  | 62,392,712 |  | 61,442,768 |  | ₩ 59,598,600 |  | ₩ 58,191,897
Revenue |  | 68,986,938 |  | 73,459,408 |  | 77,056,549 |  |
Profit (loss) |  | 527,023 |  | 1,005,276 |  | 1,846,059 |  |
POSCO DX Co., Ltd [Member] |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |
Equity |  | 572,561 |  | 525,898 |  | 461,450 |  |
Revenue |  | 1,075,175 |  | 1,473,291 |  | 1,485,876 |  |
Profit (loss) |  | 52,624 |  | 88,599 |  | 92,128 |  |
POSCO AUSTRALIA PTY LTD [member] |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |
Assets |  | 1,302,758 |  |  |  | 1,322,381 | [1] |
Liabilities |  | 126,704 |  |  |  | 133,612 | [1] |
Equity |  | 1,176,054 |  |  |  | 1,188,769 | [1] |
Revenue |  | 120,629 |  |  |  | 224,985 | [1] |
Profit (loss) |  | 54,161 |  |  |  | 152,896 | [1] |
POSCO-CTPC Co., Ltd. [member] |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |
Assets |  | 93,444 |  |  |  |  |  |
Liabilities |  | 30,522 |  |  |  |  |  |
Equity |  | 62,922 |  |  |  |  |  |
Revenue |  | 193,651 |  |  |  |  |  |
Profit (loss) |  | 1,137 |  |  |  |  |  |
Domestic [member] | POSCO [Member] |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |
Assets |  | 45,022,297 |  | 45,681,401 |  | 45,825,529 |  |
Liabilities |  | 11,113,310 |  | 12,574,873 |  | 12,716,600 |  |
Equity |  | 33,908,987 |  | 33,106,528 |  | 33,108,929 |  |
Revenue |  | 35,010,837 |  | 37,556,523 |  | 38,971,567 |  |
Profit (loss) |  | 1,187,860 |  | 901,542 |  | 1,179,665 |  |
Domestic [member] | POSCO Eco & Challenge Co., Ltd. |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |
Assets |  | 8,172,206 |  | 7,409,590 |  | 8,402,626 |  |
Liabilities |  | 5,276,507 |  | 3,987,205 |  | 5,061,423 |  |
Equity |  | 2,895,699 |  | 3,422,385 |  | 3,341,203 |  |
Revenue |  | 6,591,563 |  | 9,933,169 |  | 9,463,944 |  |
Profit (loss) |  | (517,983) |  | 93,873 |  | 198,412 |  |
Domestic [member] | POSCO DX Co., Ltd [Member] |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |
Assets |  | 814,795 |  | 871,043 |  | 871,343 |  |
Liabilities |  | 253,134 |  | 356,499 |  | 418,446 |  |
Equity |  | 561,661 |  | 514,543 |  | 452,897 |  |
Revenue |  | 1,046,633 |  | 1,440,386 |  | 1,445,326 |  |
Profit (loss) |  | 52,384 |  | 86,759 |  | 88,527 |  |
Domestic [member] | eNtoB Corporation [member] |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |
Assets |  | 163,126 |  | 186,221 |  | 164,228 |  |
Liabilities |  | 90,342 |  | 116,120 |  | 97,127 |  |
Equity |  | 72,784 |  | 70,101 |  | 67,101 |  |
Revenue |  | 995,642 |  | 1,018,894 |  | 1,110,222 |  |
Profit (loss) |  | 4,404 |  | 4,683 |  | 8,491 |  |
Domestic [member] | POSCO FUTURE M CO.,LTD. and others [Member] |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |
Assets |  | 7,828,096 |  | 6,765,713 |  | 5,756,556 |  |
Liabilities |  | 3,927,339 |  | 3,980,328 |  | 3,327,874 |  |
Equity |  | 3,900,757 |  | 2,785,385 |  | 2,428,682 |  |
Revenue |  | 2,689,403 |  | 3,608,988 |  | 4,457,201 |  |
Profit (loss) |  | 31,815 |  | (222,038) |  | 32,140 |  |
Domestic [member] | POSCO M-TECH [member] |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |
Assets |  | 155,483 |  | 149,758 |  | 154,927 |  |
Liabilities |  | 41,231 |  | 37,945 |  | 39,170 |  |
Equity |  | 114,252 |  | 111,813 |  | 115,757 |  |
Revenue |  | 357,432 |  | 346,628 |  | 341,410 |  |
Profit (loss) |  | 1,411 |  | 568 |  | 4,868 |  |
Domestic [member] | POSCO STEELEON Co., Ltd. [Member] |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |
Assets |  | 479,864 |  | 530,860 |  | 529,525 |  |
Liabilities |  | 105,249 |  | 154,751 |  | 174,724 |  |
Equity |  | 374,615 |  | 376,108 |  | 354,801 |  |
Revenue |  | 1,093,989 |  | 1,175,769 |  | 1,132,510 |  |
Profit (loss) |  | 14,436 |  | 32,358 |  | 32,276 |  |
Domestic [member] | POSCO INTERNATIONAL Corporation [member] |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |
Assets |  | 13,725,392 |  | 12,692,301 |  | 12,565,027 |  |
Liabilities |  | 7,931,430 |  | 6,981,884 |  | 7,170,143 |  |
Equity |  | 5,793,962 |  | 5,710,417 |  | 5,394,884 |  |
Revenue |  | 26,956,598 |  | 27,388,739 |  | 28,536,917 |  |
Profit (loss) |  | 513,830 |  | 510,930 |  | 632,519 |  |
Domestic [member] | POSCO MOBILITY SOLUTION [Member] |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |
Assets |  | 930,712 |  | 957,411 |  | 1,036,342 |  |
Liabilities |  | 376,195 |  | 406,888 |  | 448,319 |  |
Equity |  | 554,517 |  | 550,523 |  | 588,023 |  |
Revenue |  | 1,182,165 |  | 1,179,247 |  | 1,432,416 |  |
Profit (loss) |  | 2,104 |  | (35,088) |  | (24,265) |  |
Domestic [member] | POSCO Pilbara LITHIUM SOLUTION CO Ltd [Member] |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |
Assets |  | 1,199,943 |  | 1,254,635 |  | 898,301 |  |
Liabilities |  | 824,709 |  | 1,038,612 |  | 558,449 |  |
Equity |  | 375,234 |  | 216,023 |  | 339,852 |  |
Revenue |  | 151,666 |  | 30,237 |  | 4,673 |  |
Profit (loss) |  | (241,325) |  | (122,852) |  | (34,198) |  |
Domestic [member] | QSONE Co.,Ltd. [member] |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |
Assets |  | 233,225 |  | 232,238 |  | 232,848 | [2] |
Liabilities |  | 35,538 |  | 44,188 |  | 53,646 | [2] |
Equity |  | 197,687 |  | 188,050 |  | 179,202 | [2] |
Revenue |  | 23,883 |  | 23,087 |  | 18,044 | [2] |
Profit (loss) |  | 9,637 |  | 8,852 |  | 6,037 | [2] |
Foreign [member] |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |
Assets | [3] |  |  | 1,030,657 |  |  |  |
Liabilities | [3] |  |  | 72,827 |  |  |  |
Equity | [3] |  |  | 957,831 |  |  |  |
Revenue | [3] |  |  | 147,136 |  |  |  |
Profit (loss) | [3] |  |  | 80,352 |  |  |  |
Foreign [member] | POSCO INTERNATIONAL Corporation [member] |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |
Assets |  |  |  |  |  | 306,105 |  |
Liabilities |  |  |  |  |  | 400,124 |  |
Equity |  |  |  |  |  | (94,019) |  |
Revenue |  |  |  |  |  | 33,288 |  |
Profit (loss) |  |  |  |  |  | (21,723) |  |
Foreign [member] | POSCO America Corporation [member] |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |
Assets |  | 177,414 |  | 182,232 |  | 153,900 |  |
Liabilities |  | 7,388 |  | 8,496 |  | 7,980 |  |
Equity |  | 170,026 |  | 173,737 |  | 145,920 |  |
Revenue |  | 12,387 |  | 13,260 |  | 12,231 |  |
Profit (loss) |  | 1,103 |  | 6,839 |  | 16,690 |  |
Foreign [member] | POSCO Asia Co Ltd [member] |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |
Assets |  | 1,070,584 |  | 917,019 |  | 1,130,637 |  |
Liabilities |  | 767,290 |  | 621,154 |  | 862,642 |  |
Equity |  | 303,294 |  | 295,864 |  | 267,995 |  |
Revenue |  | 33,285 |  | 64,318 |  | 83,539 |  |
Profit (loss) |  | 14,276 |  | (8,867) |  | 16,275 |  |
Foreign [member] | POSCO-CTPC Co., Ltd. [member] |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |
Assets |  |  |  | 108,172 |  | 113,805 |  |
Liabilities |  |  |  | 47,479 |  | 59,166 |  |
Equity |  |  |  | 60,692 |  | 54,639 |  |
Revenue |  |  |  | 264,923 |  | 250,167 |  |
Profit (loss) |  |  |  | 0 |  | 1,093 |  |
Foreign [member] | POSCO (Zhangjiagang) Stainless Steel Co.,Ltd [Member] |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |
Assets |  | 1,017,825 |  | 1,047,884 |  | 936,933 |  |
Liabilities |  | 828,674 |  | 654,532 |  | 459,269 |  |
Equity |  | 189,151 |  | 393,352 |  | 477,664 |  |
Revenue |  | 2,459,184 |  | 3,042,140 |  | 3,359,087 |  |
Profit (loss) |  | (203,736) |  | (129,933) |  | (169,873) |  |
Foreign [member] | POSCO (Thailand) Company Limited [member] |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |
Assets |  | 181,303 |  | 197,326 |  | 185,280 |  |
Liabilities |  | 51,750 |  | 77,129 |  | 82,456 |  |
Equity |  | 129,553 |  | 120,197 |  | 102,824 |  |
Revenue |  | 460,933 |  | 407,074 |  | 440,532 |  |
Profit (loss) |  | 2,683 |  | 2,400 |  | (3,621) |  |
Foreign [member] | Qingdao Pohang Stainless Steel Co, Ltd [member] |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |
Assets |  | 101,432 |  | 135,759 |  | 128,820 |  |
Liabilities |  | 28,485 |  | 33,597 |  | 23,453 |  |
Equity |  | 72,947 |  | 102,162 |  | 105,367 |  |
Revenue |  | 172,453 |  | 211,357 |  | 296,883 |  |
Profit (loss) |  | (29,916) |  | (14,197) |  | (13,362) |  |
Foreign [member] | POSCO(Suzhou) Automotive Processing Center Co, Ltd [member] |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |
Assets |  | 367,922 |  | 441,569 |  | 371,734 |  |
Liabilities |  | 168,201 |  | 252,305 |  | 198,451 |  |
Equity |  | 199,721 |  | 189,265 |  | 173,283 |  |
Revenue |  | 697,007 |  | 783,814 |  | 729,700 |  |
Profit (loss) |  | 6,927 |  | (2,773) |  | 6,364 |  |
Foreign [member] | POSCO-China Holding Corp. [member] |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |
Assets |  | 899,827 |  | 1,018,689 |  | 986,501 |  |
Liabilities |  | 394,606 |  | 512,006 |  | 515,610 |  |
Equity |  | 505,221 |  | 506,683 |  | 470,891 |  |
Revenue |  | 26,683 |  | 20,500 |  | 31,329 |  |
Profit (loss) |  | (9,895) |  | (17,866) |  | (22,326) |  |
Foreign [member] | POSCO JAPAN Co, Ltd [member] |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |
Assets |  | 464,652 |  | 212,669 |  | 201,184 |  |
Liabilities |  | 259,140 |  | 8,031 |  | 5,300 |  |
Equity |  | 205,512 |  | 204,638 |  | 195,884 |  |
Revenue |  | 332,192 |  | 15,989 |  | 16,453 |  |
Profit (loss) |  | 3,042 |  | 2,985 |  | 3,705 |  |
Foreign [member] | POSCO-lndia Pune Processing Center. Pvt. Ltd. |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |
Assets |  | 219,226 |  | 209,999 |  | 222,439 |  |
Liabilities |  | 156,960 |  | 156,856 |  | 175,594 |  |
Equity |  | 62,266 |  | 53,144 |  | 46,845 |  |
Revenue |  | 561,938 |  | 483,584 |  | 436,248 |  |
Profit (loss) |  | 13,138 |  | 1,129 |  | 1,576 |  |
Foreign [member] | POSCO Japan PC CO., LTD [member] |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |
Assets |  | 282,106 |  | 352,915 |  | 335,780 |  |
Liabilities |  | 186,496 |  | 262,886 |  | 254,557 |  |
Equity |  | 95,610 |  | 90,028 |  | 81,223 |  |
Revenue |  | 601,268 |  | 615,346 |  | 623,375 |  |
Profit (loss) |  | 7,662 |  | 6,430 |  | 9,079 |  |
Foreign [member] | POSCO-CFPC Co., Ltd. [member] |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |
Assets |  | 208,779 |  | 331,811 |  | 296,489 |  |
Liabilities |  | 138,537 |  | 257,870 |  | 229,961 |  |
Equity |  | 70,242 |  | 73,941 |  | 66,528 |  |
Revenue |  | 751,210 |  | 980,637 |  | 843,934 |  |
Profit (loss) |  | (4,810) |  | (96) |  | 1,900 |  |
Foreign [member] | POSCO MPPC S.A. de C.V. [member] |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |
Assets |  | 540,502 |  | 661,110 |  | 521,303 |  |
Liabilities |  | 432,030 |  | 536,852 |  | 415,819 |  |
Equity |  | 108,472 |  | 124,258 |  | 105,484 |  |
Revenue |  | 990,082 |  | 1,008,224 |  | 934,346 |  |
Profit (loss) |  | (12,703) |  | 3,709 |  | (278) |  |
Foreign [member] | POSCO-VIETNAM Co, Ltd [member] |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |
Assets |  | 297,547 |  | 350,524 |  | 309,476 |  |
Liabilities |  | 287,963 |  | 337,418 |  | 299,054 |  |
Equity |  | 9,584 |  | 13,106 |  | 10,422 |  |
Revenue |  | 800,445 |  | 835,631 |  | 737,530 |  |
Profit (loss) |  | (3,180) |  | 1,136 |  | (5,594) |  |
Foreign [member] | POSCO MEXICO S.A. DE C.V. [member] |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |
Assets |  | 516,173 |  | 749,960 |  | 726,121 |  |
Liabilities |  | 267,912 |  | 475,331 |  | 500,597 |  |
Equity |  | 248,261 |  | 274,629 |  | 225,524 |  |
Revenue |  | 779,354 |  | 999,807 |  | 846,600 |  |
Profit (loss) |  | (19,631) |  | 16,243 |  | (8,530) |  |
Foreign [member] | POSCO Thainox Public Company Limited [member] |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |
Assets |  | 513,813 |  | 512,321 |  | 433,638 |  |
Liabilities |  | 103,715 |  | 115,149 |  | 100,506 |  |
Equity |  | 410,098 |  | 397,172 |  | 333,132 |  |
Revenue |  | 595,928 |  | 576,912 |  | 551,000 |  |
Profit (loss) |  | (2,639) |  | 14,948 |  | (4,170) |  |
Foreign [member] | POSCO Center Beijing [member] |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |
Assets |  | 429,839 |  | 457,044 |  | 427,898 |  |
Liabilities |  | 225,133 |  | 253,675 |  | 246,190 |  |
Equity |  | 204,706 |  | 203,369 |  | 181,708 |  |
Revenue |  | 29,728 |  | 32,514 |  | 37,028 |  |
Profit (loss) |  | (2,114) |  | 1,065 |  | 5,623 |  |
Foreign [member] | POSCO COATED STEEL (THAILAND) CO, LTD [member] |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |
Assets |  | 323,171 |  | 324,391 |  | 307,619 |  |
Liabilities |  | 210,452 |  | 228,055 |  | 220,259 |  |
Equity |  | 112,719 |  | 96,336 |  | 87,360 |  |
Revenue |  | 447,580 |  | 402,981 |  | 386,992 |  |
Profit (loss) |  | 9,970 |  | (3,165) |  | 1,459 |  |
Foreign [member] | POSCO INTERNATIONAL AMARA Co Ltd [Member] |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |
Assets |  | 312,345 |  | 322,963 |  | 629,533 |  |
Liabilities |  | 486,621 |  | 479,031 |  | 473,572 |  |
Equity |  | (174,276) |  | (156,068) |  | 155,961 |  |
Revenue |  | 53,994 |  | 43,629 |  | 2,282,133 |  |
Profit (loss) |  | (21,735) |  | (45,325) |  | 29,445 |  |
Foreign [member] | POSCO VST CO LTD [Member] |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |
Assets |  | 307,026 |  | 304,235 |  | 251,525 |  |
Liabilities |  | 242,985 |  | 224,360 |  | 196,382 |  |
Equity |  | 64,041 |  | 79,875 |  | 55,143 |  |
Revenue |  | 588,177 |  | 510,914 |  | 547,889 |  |
Profit (loss) |  | (13,800) |  | 15,771 |  | (36,723) |  |
Foreign [member] | POSCO Maharashtra Steel Private Limited [member] |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |
Assets |  | 1,410,778 |  | 1,471,597 |  | 1,319,232 |  |
Liabilities |  | 616,607 |  | 695,297 |  | 791,431 |  |
Equity |  | 794,171 |  | 776,300 |  | 527,801 |  |
Revenue |  | 1,962,507 |  | 1,785,238 |  | 1,763,374 |  |
Profit (loss) |  | 74,068 |  | 180,957 |  | 58,669 |  |
Foreign [member] | POSCO INDIA PROCESSING CENTER PRIVATE LIMITED [Member] |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |
Assets |  | 449,056 |  | 424,014 |  | 344,678 |  |
Liabilities |  | 328,739 |  | 310,883 |  | 251,870 |  |
Equity |  | 120,317 |  | 113,131 |  | 92,808 |  |
Revenue |  | 1,038,388 |  | 1,003,522 |  | 896,860 |  |
Profit (loss) |  | 15,473 |  | 9,669 |  | 13,268 |  |
Foreign [member] | POSCO Vietnam Processing Center Co Ltd [Member] |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |
Assets |  |  |  |  |  | 238,694 |  |
Liabilities |  |  |  |  |  | 127,038 |  |
Equity |  |  |  |  |  | 111,656 |  |
Revenue |  |  |  |  |  | 577,064 |  |
Profit (loss) |  |  |  |  |  | 7,003 |  |
Foreign [member] | POSCO (Liaoning) Automotive Processing Center Co., Ltd. [Member] |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |
Assets |  | 89,376 |  | 89,444 |  | 99,186 |  |
Liabilities |  | 29,251 |  | 31,260 |  | 48,858 |  |
Equity |  | 60,125 |  | 58,184 |  | 50,328 |  |
Revenue |  | 155,217 |  | 209,207 |  | 229,524 |  |
Profit (loss) |  | 1,417 |  | 2,339 |  | 3,718 |  |
Foreign [member] | POSCO YAMATO VINA STEEL JOINT STOCK COMPANY [Member] |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |
Assets |  | 433,768 |  | 466,488 |  | 434,496 |  |
Liabilities |  | 112,956 |  | 142,002 |  | 127,087 |  |
Equity |  | 320,812 |  | 324,486 |  | 307,409 |  |
Revenue |  | 391,439 |  | 423,938 |  | 395,261 |  |
Profit (loss) |  | 4,037 |  | (24,091) |  | 8,993 |  |
Foreign [member] | PT. KRAKATAU POSCO ENERGY [member] |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |
Assets |  | 297,226 |  | 296,566 |  | 263,986 |  |
Liabilities |  | 79,844 |  | 89,437 |  | 94,202 |  |
Equity |  | 217,382 |  | 207,130 |  | 169,784 |  |
Revenue |  | 36,099 |  | 34,777 |  | 34,158 |  |
Profit (loss) |  | 15,052 |  | 12,578 |  | 13,895 |  |
Foreign [member] | POSCO INTERNATIONAL AMERICA CORP. [Member] |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |
Assets |  | 678,580 |  | 726,447 |  | 400,762 |  |
Liabilities |  | 435,460 |  | 489,622 |  | 384,113 |  |
Equity |  | 243,120 |  | 236,825 |  | 16,649 |  |
Revenue |  | 2,803,426 |  | 2,651,352 |  | 946,974 |  |
Profit (loss) |  | 11,841 |  | 54,727 |  | 3,413 |  |
Foreign [member] | POSCO INTERNATIONAL Deutschland GMBH [Member] |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |
Assets |  | 535,776 |  | 503,928 |  | 895,043 |  |
Liabilities |  | 517,285 |  | 488,965 |  | 744,065 |  |
Equity |  | 18,491 |  | 14,963 |  | 150,978 |  |
Revenue |  | 1,265,871 |  | 1,099,624 |  | 2,939,318 |  |
Profit (loss) |  | 1,897 |  | (2,776) |  | 27,022 |  |
Foreign [member] | POSCO INTERNATIONAL JAPAN CORP [Member] |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |
Assets |  | 482,108 |  | 998,144 |  | 294,527 |  |
Liabilities |  | 302,412 |  | 821,148 |  | 280,090 |  |
Equity |  | 179,696 |  | 176,996 |  | 14,437 |  |
Revenue |  | 2,596,871 |  | 2,966,044 |  | 3,025,822 |  |
Profit (loss) |  | 6,490 |  | 21,235 |  | 7,452 |  |
Foreign [member] | POSCO INTERNATIONAL SINGAPORE PTE LTD [Member] |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |
Assets |  | 377,452 |  | 217,546 |  | 226,148 |  |
Liabilities |  | 351,911 |  | 194,011 |  | 209,374 |  |
Equity |  | 25,541 |  | 23,534 |  | 16,774 |  |
Revenue |  | 3,394,333 |  | 3,225,062 |  | 777,756 |  |
Profit (loss) |  | 2,545 |  | 6,560 |  | 1,498 |  |
Foreign [member] | POSCO INTERNATIONAL ITALIA S.R.L. [Member] |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |
Assets |  | 353,864 |  | 291,810 |  |  |  |
Liabilities |  | 328,875 |  | 271,429 |  |  |  |
Equity |  | 24,989 |  | 20,381 |  |  |  |
Revenue |  | 848,468 |  | 862,642 |  |  |  |
Profit (loss) |  | 2,395 |  | 2,321 |  |  |  |
Foreign [member] | PT. KRAKATAU POSCO [Member] |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |
Assets |  | 3,233,243 | [3] | 3,523,003 |  | 3,475,929 |  |
Liabilities |  | 2,656,952 | [3] | 2,874,800 |  | 2,747,948 |  |
Equity |  | 576,291 | [3] | 648,203 |  | 727,981 |  |
Revenue |  | 2,627,285 | [3] | 2,817,274 |  | 3,130,551 |  |
Profit (loss) |  | (55,749) | [3] | (168,700) |  | 65,827 |  |
Foreign [member] | POSCO ASSAN TST STEEL INDUSTRY [Member] |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |
Assets |  | 528,879 |  | 568,566 |  | 471,071 |  |
Liabilities |  | 545,403 |  | 568,513 |  | 456,913 |  |
Equity |  | (16,524) |  | 53 |  | 14,158 |  |
Revenue |  | 578,928 |  | 503,646 |  | 416,096 |  |
Profit (loss) |  | (16,426) |  | (23,238) |  | (73,032) |  |
Foreign [member] | POSCO AMERICA ALABAMA PROCESSING CENTER CO., LTD. [Member] |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |
Assets |  | 141,846 |  |  |  | 152,896 |  |
Liabilities |  | 135,609 |  |  |  | 135,087 |  |
Equity |  | 6,237 |  |  |  | 17,809 |  |
Revenue |  | 264,484 |  |  |  | 251,884 |  |
Profit (loss) |  | (5,152) |  |  |  | (3,025) |  |
Foreign [member] | POSCO Argentina S.A.U. [member] |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |
Assets |  | 3,024,213 |  | 2,786,535 |  | 1,658,879 |  |
Liabilities |  | 1,860,335 |  | 1,260,950 |  | 542,525 |  |
Equity |  | 1,163,878 |  | 1,525,585 |  | 1,116,354 |  |
Revenue |  | 64,359 |  | 3,203 |  | 0 |  |
Profit (loss) |  | (322,330) |  | (128,649) |  | (73,807) |  |
Foreign [member] | POSCO-MKPC SDN BHD [member] |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |
Assets |  | 157,680 |  | 164,150 |  | 132,043 |  |
Liabilities |  | 54,285 |  | 72,783 |  | 59,916 |  |
Equity |  | 103,395 |  | 91,367 |  | 72,127 |  |
Revenue |  | 244,146 |  | 257,822 |  | 244,754 |  |
Profit (loss) |  | 5,895 |  | 7,271 |  | 8,770 |  |
Foreign [member] | Senex Holdings PTY LTD [Member] |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |
Assets |  | 2,706,285 | [3] | 2,269,190 | [1] | 1,623,493 | [1] |
Liabilities |  | 1,137,655 | [3] | 910,149 | [1] | 802,259 | [1] |
Equity |  | 1,568,630 | [3] | 1,359,041 | [1] | 821,234 | [1] |
Revenue |  | 392,218 | [3] | 268,350 | [1] | 246,493 | [1] |
Profit (loss) |  | ₩ 28,069 | [3] | 16,389 | [1] | ₩ 14,239 | [1] |
Foreign [member] | POSCO AMERICA ALABAMA PROCESSING CENTER CO LTD [Member] |  |  |  |  |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |  |  |  |  |
Assets |  |  |  | 204,257 |  |  |  |
Liabilities |  |  |  | 192,542 |  |  |  |
Equity |  |  |  | 11,715 |  |  |  |
Revenue |  |  |  | 347,192 |  |  |  |
Profit (loss) |  |  |  | ₩ (7,963) |  |  |  |
[1] | Summarized financial information of POSCO AUSTRALIA PTY LTD and Senex Holdings PTY LTD, a subsidiary of POSCO HOLDINGS INC., are based on its consolidated financial information. The financial information of the other entities is based on separate financial statements of each entity.
[2] | The sales and net income occurred after the inclusion as a subsidiary.
[3] | Summarized financial information of POSCO AUSTRALIA PTY LTD, PT. KRAKATAU POSCO and Senex Holdings PTY LTD, a subsidiary of POSCO HOLDINGS INC., are based on its consolidated financial information. The financial information of the other entities is based on separate financial statements of each entity.

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