(a)

Changes in provisions for the year ended December 31, 2021 are as follows:


(In millions of won)
	Warranties(*)			Others			Total
Balance at January 1, 2021	₩	272,195			14,906			287,101
Additions (reversal)		216,873			(5,659	)		211,214
Usage		(231,942	)		—			(231,942	)
Balance at December 31, 2021	₩	257,126			9,247			266,373
Current	₩	164,184			9,247			173,431
Non-current	₩	92,942			—			92,942

(*) Product warranties on defective products are normally applicable for warranty periods from the date of customer’s purchase. The provision is calculated by using historical and anticipated rates of warranty claims, and costs per claim to satisfy the Group’s warranty obligation.

(b)

Changes in provisions for the year ended December 31, 2022 are as follows:


(In millions of won)
	Litigation and claims		Warranties (*)			Others			Total
Balance at January 1, 2022	₩	—		257,126			9,247			266,373
Additions (reversal)		1,680		251,395			(816	)		252,259
Usage		—		(259,153	)		—			(259,153	)
Balance at December 31, 2022	₩	1,680		249,368			8,431			259,479
Current	₩	1,680		163,211			8,431			173,322
Non-current	₩	—		86,157			—			86,157