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Sales (Tables)

12 Months Ended

Dec. 31, 2024

Revenue [abstract]

Summary of Sales

Details of sales for the years ended December 31, 2022, 2023 and 2024 are as follows:


						2022								2023								2024
						Domestic				Overseas				Domestic				Overseas				Domestic				Overseas
						In millions of won
[Type of goods and services]
Sales of goods		￦					68,578,390				606,079				85,588,151				351,986				90,659,090				359,622
Electricity							66,198,964				—				82,954,778				—				88,889,764				—
Heat supply							489,629				—				440,435				—				363,154				—
Others							1,889,797				606,079				2,192,938				351,986				1,406,172				359,622
Sales related to rendering of services							370,799				343,803				467,661				283,217				482,251				228,194
Sales related to construction services							193,541				453,412				186,996				598,399				145,496				703,612

		￦					69,142,730				1,403,294				86,242,808				1,233,602				91,286,837				1,291,428


[Timing of revenue recognition]
Performance obligations satisfied at a point in time		￦					68,578,390				606,079				85,588,151				351,986				90,659,090				359,622
Performance obligations satisfied over time							564,340				797,215				654,657				881,616				627,747				931,806

		￦					69,142,730				1,403,294				86,242,808				1,233,602				91,286,837				1,291,428