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INTANGIBLE ASSETS (Tables)

12 Months Ended

Dec. 31, 2020

INTANGIBLE ASSETS

Summary of intangible assets


						Customer
		Supplier		Software		contracts and
		relationships		development		relationships		Others		Total
Balance as of January 01, 2018		32,786		490,829		440,774		7,700		972,089
Foreign exchange effect		-		28,598		77,593		1,243		107,434
Acquisition		-		67,388		-		-		67,388
Disposal		-		(3,791)		(88)		-		(3,879)
Amortization		(6,067)		(167,384)		(130,980)		(2,505)		(306,936)
Balance as of December 31, 2018		26,719		415,640		387,299		6,438		836,096
Foreign exchange effect		-		6,137		12,586		472		19,195
Acquisition		-		100,313		-		-		100,313
Amortization		(5,304)		(157,278)		(116,462)		(3,298)		(282,342)
Balance as of December 31, 2019		21,415		364,812		283,423		3,612		673,262
Foreign exchange effect		-		42,890		83,806		1,074		127,770
Acquisition		-		154,250		-		-		154,250
Amortization		(4,637)		(188,083)		(136,525)		(3,459)		(332,704)
Balance as of December 31, 2020		16,778		373,869		230,704		1,227		622,578

Estimated useful lives		5 to 20 years		7 years		5 to 20 years		5 years

Summary of intangible assets by segment


		2020		2019		2018
Brazil		220,303		238,243		295,107
Special Steel		156,557		132,934		136,910
South America		1,534		1,729		1,441
North America		244,184		300,356		402,638
		622,578		673,262		836,096