Intangibles are carried at the acquisition cost, net of accumulated amortization and impairment charges.
The estimated useful lives are as follows:
|
|
|
Useful life |
|
|
Concessions |
|
3 to 50 years |
|
|
Right of use |
|
22 to 31 years |
|
|
Software |
|
5 years |
|