Share-based Payment - Summary of share-based payment plan (Equity-settled) (Detail) - Equity-settled plans [member]	12 Months Ended
Dec. 31, 2021 R$ / shares
Vesting Conditions [Abstract]
Concession Amount Per Share	R$ 0.01
Investment Program One [Member] \| Performance Stocks [Member]
Vesting Conditions [Abstract]
Period of Continued Employment Under Service Conditions	3 years
Percentage of Achievement to Calculate Fair Value	100.00%
Investment Program One [Member] \| Performance Stocks [Member] \| Bottom of range [member]
Vesting Conditions [Abstract]
Percentage of Achievement Of Specific Metrics	0.00%
Investment Program One [Member] \| Performance Stocks [Member] \| Top of range [member]
Vesting Conditions [Abstract]
Percentage of Achievement Of Specific Metrics	200.00%
Investment Program Two [Member] \| Performance Stocks [Member]
Vesting Conditions [Abstract]
Period of Continued Employment Under Service Conditions	4 years
Percentage of Achievement to Calculate Fair Value	100.00%
Investment Program Two [Member] \| Performance Stocks [Member] \| Bottom of range [member]
Vesting Conditions [Abstract]
Percentage of Achievement Of Specific Metrics	0.00%
Investment Program Two [Member] \| Performance Stocks [Member] \| Top of range [member]
Vesting Conditions [Abstract]
Percentage of Achievement Of Specific Metrics	150.00%
Investment Program Three [Member] \| Restricted Stocks [Member]
Vesting Conditions [Abstract]
Period of Continued Employment Under Service Conditions	5 years
Percentage of Long Term Incentive Program whichIs Equivalent to Restricted Shares	25.00%
Rumo S A [member] \| Special Program 2021 [Member]
Vesting Conditions [Abstract]
Period of Continued Employment Under Service Conditions	5 years
Rumo S A [member] \| Other Than Special Program 2021 [Member]
Vesting Conditions [Abstract]
Period of Continued Employment Under Service Conditions	3 years
Percentage of Achievement to Calculate Fair Value	100.00%
Rumo S A [member] \| Other Than Special Program 2021 [Member] \| Bottom of range [member]
Vesting Conditions [Abstract]
Percentage of Achievement Of Specific Metrics	0.00%
Rumo S A [member] \| Other Than Special Program 2021 [Member] \| Top of range [member]
Vesting Conditions [Abstract]
Percentage of Achievement Of Specific Metrics	150.00%

The per share amount of concession under the share-based payment programs.

No definition available.

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Balance Type:	na
Period Type:	duration

- Definition

The percentage of achievement of specific metrics under the share-based payment programs.

+ References

No definition available.

+ Details

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- Definition

The percentage of achievement to calculate fair value in share-based payment programs.

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

The percentage of Long-Term Incentive Program which is equivalent to restricted shares under the share-based payment programs.

+ References

No definition available.

+ Details

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- Definition

The period of continued employment under service conditions in share-based payment arrangements.

+ References

No definition available.

+ Details

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- References

No definition available.

+ Details

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