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Intangibles (Tables)

12 Months Ended

Dec. 31, 2021

Intangibles

Schedule of movements in intangibles


										Research
										and development
		Goodwill		Concessions		Contract right		Software		project and patents		Total
Balance at December 31, 2019		3,629		3,970		140		76		684		8,499
Additions		—		2,513		—		29		—		2,542
Disposals		—		(7)		(134)		—		—		(141)
Amortization		—		(177)		(1)		(23)		—		(201)
Translation adjustment		(331)		(908)		(5)		(6)		(153)		(1,403)
Balance at December 31, 2020		3,298		5,391		—		76		531		9,296
Cost		3,298		6,393		102		743		531		11,067
Accumulated amortization		—		(1,002)		(102)		(667)		—		(1,771)
Balance at December 31, 2020		3,298		5,391		—		76		531		9,296
Additions		—		431		—		47		—		478
Disposals		—		(7)		—		—		—		(7)
Amortization		—		(240)		—		(35)		—		(275)
Acquisition of NLC (note 16)		—		1,428		—		—		—		1,428
Impairment of discontinued operations (note 16)		—		(1,422)		—		—		—		(1,422)
Translation adjustment		(90)		(358)		—		(2)		(37)		(487)
Balance at December 31, 2021		3,208		5,223		—		86		494		9,011
Cost		3,208		6,332		—		516		494		10,550
Accumulated amortization		—		(1,109)		—		(430)		—		(1,539)
Balance at December 31, 2021		3,208		5,223		—		86		494		9,011

Schedule of estimated useful lives of intangibles


		Useful life
Railway concessions		5 to 37 years
Contract right		22 to 31 years
Software		5 years