EMPLOYEE BENEFITS - Defined benefit pension plan - Allocation of plan assets (Details)	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016
Defined benefit pension plan
Allocation for plan assets
Target allocation of shares (as a percent)	50.00%	50.00%
Target allocation of debt securities (as a percent)	40.00%	40.00%
Target allocation of alternative securities (as a percent)	10.00%	10.00%
Brazilian Plans
Allocation for plan assets
Fixed income	98.00%	97.00%
Others	2.00%	3.00%
Total	100.00%	100.00%
North American Plans
Allocation for plan assets
Fixed income	48.30%	45.80%
Variable income	45.00%	48.50%
Others	6.70%	5.70%
Total	100.00%	100.00%

Target allocation range in alternative securities, in a defined benefit plan, represented as a percentage.

No definition available.

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- Definition

Target allocation range in debt securities, in a defined benefit plan, represented as a percentage.

+ References

No definition available.

+ Details

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- Definition

Target allocation range in shares, in a defined benefit plan, represented as a percentage.

+ References

No definition available.

+ Details

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- References

No definition available.

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- Definition

Allocation of plan assets, in a defined benefit plan, represented by fixed income percentage.

+ References

No definition available.

+ Details

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- Definition

Allocation of plan assets, in a defined benefit plan, represented by other percentages.

+ References

No definition available.

+ Details

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- Definition

Allocation of plan assets, in a defined benefit plan, represented as a percentage.

+ References

No definition available.

+ Details

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- Definition

Allocation of plan assets, in a defined benefit plan, represented by variable income percentage.

+ References

No definition available.

+ Details

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- Details

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- Details

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- Details

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