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Inventories

12 Months Ended

Dec. 31, 2022

Classes of current inventories [abstract]

14.	Inventories

Inventories as of December 31, 2021 and 2022 are as follows:


						2021
						Acquisition cost				Valuation allowance				Book value
						In millions of won
Raw materials		￦					3,655,588				(1,247	)			3,654,341
Merchandises							512				—				512
Work-in-progress							180,220				—				180,220
Finished goods							27,254				—				27,254
Supplies							2,541,028				(3,869	)			2,537,159
Inventories-in-transit							1,195,148				—				1,195,148
Other inventories							13,548				—				13,548

		￦					7,613,298				(5,116	)			7,608,182


						2022
						Acquisition cost				Valuation allowance				Book value
						In millions of won
Raw materials		￦					4,522,171				(1,350	)			4,520,821
Merchandises							1,001				—				1,001
Work-in-progress							172,089				(75	)			172,014
Finished goods							52,642				(57	)			52,585
Supplies							2,814,377				—				2,814,377
Inventories-in-transit							2,356,444				—				2,356,444
Other inventories							13,490				—				13,490

		￦					9,932,214				(1,482	)			9,930,732

The reversal of the allowance for loss on inventory valuation deducted from the cost of sales for the years ended December 31,

2020,

2021 and 2022 amounts to

￦

2,020 million,

￦11,422 million and ￦18,162 million, respectively.

The amounts of loss from inventory valuation included in other gains or losses for the years ended December 31,

2020,

2021 and 2022 were

￦

4,998 million,

￦7,761 million and ￦14,528 million, respectively.