Concession duty expense payable to the Mexican government.

No definition available.

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- Definition

Total period of time for payments due under railroad concession to Mexican government.

+ References

No definition available.

+ Details

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- Definition

Percentage guarantee by the Company of an unconsolidated affiliate's reserves or additional loans.

+ References

No definition available.

+ Details

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- Definition

Percentage of gross revenue payable under railroad Concession to Mexican government.

+ References

No definition available.

+ Details

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(2))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

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- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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Commitments and Contingencies (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Financial Guarantee [Member]
Loss Contingencies [Line Items]
Letter of credit outstanding, amount	$ 5.6
Percent guarantee of unconsolidated affiliate debt	50.00%
KCSM [Member]
Loss Contingencies [Line Items]
Total period of time for payments due under railroad Concession to Mexican government	50 years
Percentage of gross revenue payable under railroad Concession to Mexican government	1.25%
KCSM [Member] \| Materials and Other Expense [Member]
Loss Contingencies [Line Items]
Concession duty expense	$ 17.4	$ 18.9	$ 17.8
Panama Canal Railway Company [Member] \| Financial Guarantee [Member] \| 7.0% Senior Secured Notes due November 1, 2026 [Member]
Loss Contingencies [Line Items]
Debt instrument, stated interest rate	7.00%
Debt instrument, maturity date	Nov. 01, 2026