Kansas City Southern (KSU) 10-K 31 Jan 14 2013 FY Annual report Financial data

Document_and_Entity_Informatio

Document and Entity Information Document (USD $)	12 Months Ended
In Billions, except Share data, unless otherwise specified	Dec. 31, 2013	Jan. 24, 2014	Jun. 30, 2013
Document and Entity Information [Abstract]	'	'	'
Entity Registrant Name	'KANSAS CITY SOUTHERN	'	'
Entity Central Index Key	'0000054480	'	'
Current Fiscal Year End Date	'--12-31	'	'
Entity Filer Category	'Large Accelerated Filer	'	'
Document Type	'10-K	'	'
Document Period End Date	31-Dec-13	'	'
Document Fiscal Year Focus	'2013	'	'
Document Fiscal Period Focus	'FY	'	'
Amendment Flag	'false	'	'
Entity Common Stock, Shares Outstanding	'	110,247,066	'
Entity Well-known Seasoned Issuer	'Yes	'	'
Entity Voluntary Filers	'No	'	'
Entity Current Reporting Status	'Yes	'	'
Entity Public Float	'	'	$11.50

Consolidated_Statements_of_Inc

Consolidated Statements of Income (USD $)	12 Months Ended
In Millions, except Share data in Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Revenues	$2,369.30	$2,238.60	$2,098.30
Operating expenses:	'	'	'
Compensation and benefits	441.6	430.5	423.8
Purchased services	217.6	219.8	204.8
Fuel	389.6	359.6	346.5
Equipment costs	160.5	167.1	172
Depreciation and amortization	223.3	198.8	186.2
Materials and other	198.1	189.9	179
Elimination of deferred statutory profit sharing liability, net	0	-43	0
Gain on insurance recoveries related to hurricane damage	0	0	-25.6
Total operating expenses	1,630.70	1,522.70	1,486.70
Operating income	738.6	715.9	611.6
Equity in net earnings of unconsolidated affiliates	18.8	19.3	18.2
Interest expense	-80.6	-100.4	-129.1
Debt retirement costs	-119.2	-20.1	-38.7
Foreign exchange gain (loss)	-5.2	2.7	-9.2
Other income (expense), net	-0.8	-1	2.2
Income before income taxes	551.6	616.4	455
Income tax expense	198.3	237	123.1
Net income	353.3	379.4	331.9
Less: Net income attributable to noncontrolling interest	1.9	2.1	1.6
Net income attributable to Kansas City Southern and subsidiaries	351.4	377.3	330.3
Preferred stock dividends	0.2	0.2	1.6
Net income available to common stockholders	$351.20	$377.10	$328.70
Earnings per share:	'	'	'
Basic earnings per share	$3.19	$3.44	$3.04
Diluted earnings per share	$3.18	$3.43	$3
Average shares outstanding (in thousands):	'	'	'
Basic	109,973	109,712	108,208
Potentially dilutive common shares	367	368	1,622
Diluted	110,340	110,080	109,830

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Net income	$353.30	$379.40	$331.90
Other comprehensive income (loss):	'	'	'
Unrealized loss on cash flow hedges arising during the period, net of tax of less than $(0.1) million and $(0.6) million	-0.2	-1	0
Reclassification adjustment from cash flow hedges included in net income, net of tax of $0.3 million, $0.3 million and $0.2 million	0.7	0.4	0.2
Amortization of prior service credit, net of tax of $(0.1) million for all periods presented	-0.1	-0.1	-0.2
Foreign currency translation adjustments, net of tax of $0.4 million and $(0.5) million	0	0.5	-0.8
Other comprehensive income (loss)	0.4	-0.2	-0.8
Comprehensive income	353.7	379.2	331.1
Less: comprehensive income attributable to noncontrolling interest	1.9	2.1	1.6
Comprehensive income attributable to Kansas City Southern and subsidiaries	$351.80	$377.10	$329.50

Consolidated_Statements_of_Com1

Consolidated Statements of Comprehensive Income (Parentheticals) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Tax effect on unrealized loss on cash flow hedges	($0.10)	($0.60)	'
Tax effect on reclassification adjustment from cash flow hedges included in net income	0.3	0.3	0.2
Tax effect on amortization of prior service credit	-0.1	-0.1	-0.1
Tax effect on foreign currency translation adjustments	'	$0.40	($0.50)

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Current assets:	'	'
Cash and cash equivalents	$429.50	$72.60
Accounts receivable, net	198.3	183.6
Materials and supplies	121.3	125.6
Deferred income taxes	131.6	92.1
Other current assets	61.7	48.4
Total current assets	942.4	522.3
Investments	41.1	51.5
Restricted funds	4.2	14.2
Property and equipment (including concession assets), net	6,356.30	5,684.80
Other assets	91.4	123.1
Total assets	7,435.40	6,395.90
Current liabilities:	'	'
Debt due within one year	332	60.2
Accounts payable and accrued liabilities	398.6	364.6
Total current liabilities	730.6	424.8
Long-term debt	1,856.90	1,547.60
Deferred income taxes	1,044.60	894.2
Other noncurrent liabilities and deferred credits	126.7	128.6
Total liabilities	3,758.80	2,995.20
Commitments and contingencies	0	0
Stockholders’ equity:	'	'
$.01 par, common stock, 400,000,000 shares authorized, 123,352,185 shares issued; 110,229,229 and 110,131,353 shares outstanding at December 31, 2013 and 2012, respectively	1.1	1.1
Paid-in capital	942.5	925.3
Retained earnings	2,422.90	2,166.50
Accumulated other comprehensive loss	-2	-2.4
Total stockholders’ equity	3,370.60	3,096.60
Noncontrolling interest	306	304.1
Total equity	3,676.60	3,400.70
Total liabilities and equity	7,435.40	6,395.90
$25 Par Preferred Stock [Member]	'	'
Stockholders’ equity:	'	'
$25 par, 4% noncumulative, preferred stock, 840,000 shares authorized, 649,736 shares issued, 242,170 shares outstanding	$6.10	$6.10

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Stockholders’ equity:	'	'	'
Common Stock, Par Value	$0.01	$0.01	'
Common Stock, Shares Authorized	400,000,000	400,000,000	'
Common Stock, Shares Issued	123,352,185	123,352,185	'
Common Stock, Shares Outstanding	110,229,229	110,131,353	'
$25 Par Preferred Stock [Member]	'	'	'
Stockholders’ equity:	'	'	'
Preferred Stock, Par Value	$25	$25	$25
Preferred Stock, Dividend Rate	4.00%	4.00%	'
Preferred Stock, Shares Authorized	840,000	840,000	'
Preferred Stock, Shares Issued	649,736	649,736	'
Preferred Stock, Shares Outstanding	242,170	242,170	'

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Operating activities:	'	'	'
Net income	$353.30	$379.40	$331.90
Adjustments to reconcile net income to net cash provided by operating activities:	'	'	'
Depreciation and amortization	223.3	198.8	186.2
Deferred income taxes	111.2	197.3	120.7
Equity in net earnings of unconsolidated affiliates	-18.8	-19.3	-18.2
Share-based compensation	13.6	10.7	8.5
Excess tax benefit from share-based compensation	-4.2	-31.5	-0.2
Deferred compensation	0	7.3	19.5
Elimination of deferred statutory profit sharing liability	0	-47.8	0
Distributions from unconsolidated affiliates	12.5	19.8	18.1
Gain on insurance recoveries related to hurricane damage	0	0	-25.6
Cash payments related to hurricane damage	0	0	-3.3
Insurance proceeds related to hurricane damage	0	0	40.2
Debt retirement costs	119.2	20.1	38.7
Changes in working capital items:	'	'	'
Accounts receivable	-14.4	-21.5	-1.5
Materials and supplies	7.1	-9.3	-7.2
Other current assets	-1.8	-15.1	-26.8
Accounts payable and accrued liabilities	0.3	-3	-7.5
Other, net	-3	-12.7	-35.5
Net cash provided by operating activities	798.3	673.2	638
Investing activities:	'	'	'
Capital expenditures	-594.8	-517.1	-482.2
Purchase or replacement of equipment under operating leases	-211.8	-22.9	-12.8
Property investments in MSLLC	-31.6	-35.2	-33.3
Contributions from noncontrolling interest	0	7.8	10
Insurance proceeds related to hurricane damage	0	0	12.4
Proceeds from disposal of property	8.2	14.7	10
Other, net	-3.3	0.8	-14.5
Net cash used for investing activities	-833.3	-551.9	-510.4
Financing activities:	'	'	'
Proceeds from issuance of long-term debt	1,918.40	329.6	550
Repayment of long-term debt	-1,343.20	-375.9	-653.3
Debt costs	-117.8	-22.1	-36.6
Proceeds from employee stock plans	1.5	1.9	2.1
Excess tax benefit from share-based compensation	4.2	31.5	0.2
Dividends paid	-71.2	-86.1	-3
Net cash provided by (used for) financing activities	391.9	-121.1	-140.6
Cash and cash equivalents:	'	'	'
Net increase (decrease) during each period	356.9	0.2	-13
At beginning of year	72.6	72.4	85.4
At end of year	429.5	72.6	72.4
Non-cash investing and financing activities:	'	'	'
Capital expenditures and purchase or replacement of equipment under operating lease accrued but not yet paid at end of year	50.1	44.4	61.7
Capital lease obligations incurred	0	13.8	0.7
Non-cash asset acquisitions	56.7	13.2	116.1
Dividends accrued but not yet paid at end of year	23.8	0	0
Cash payments:	'	'	'
Interest paid, net of amounts capitalized	84.1	97.9	125
Income tax payments, net of refunds	$99.20	$1.90	$0.90

Consolidated_Statements_of_Cha

Consolidated Statements of Changes in Equity (USD $)

Total

$25 Par Preferred Stock [Member]

$1 Par Cumulative Preferred Stock Series D 5.125% [Member]

$.01 Par Common Stock [Member]

Paid-in Capital [Member]

Retained Earnings [Member]

Accumulated Other Comprehensive Income (Loss) [Member]

Noncontrolling Interest [Member]

$25 Par Preferred Stock [Member]

$25 Par Preferred Stock [Member]

$1 Par Cumulative Preferred Stock Series D 5.125% [Member]

$1 Par Cumulative Preferred Stock Series D 5.125% [Member]

In Millions, unless otherwise specified

Retained Earnings [Member]

Retained Earnings [Member]

Balance at Dec. 31, 2010

$2,713.70

$6.10

$0.20

$1

$877.20

$1,548

($1.40)

$282.60

'

'

'

'

Increase (Decrease) in Stockholders' Equity [Roll Forward]

'

'

'

'

'

'

'

'

'

'

'

'

Net income

331.9

'

'

'

'

330.3

'

1.6

'

'

'

'

Other comprehensive income (loss)

-0.8

'

'

'

'

'

-0.8

'

'

'

'

'

Contributions from noncontrolling interest

10

'

'

'

'

'

'

10

'

'

'

'

Conversion of series D cumulative convertible preferred stock

-0.2

'

-0.2

'

'

'

'

'

'

'

'

'

Common stock issued for conversion of series D cumulative convertible preferred stock

0.2

'

'

0.1

0.1

'

'

'

'

'

'

'

Dividends on preferred stock

'

'

'

'

'

'

'

'

-0.3

-0.3

-2.7

-2.7

Options exercised and stock subscribed, net of shares withheld for employee taxes

-1.8

'

'

'

-1.8

'

'

'

'

'

'

'

Tax benefit from share-based compensation

0.2

'

'

'

0.2

'

'

'

'

'

'

'

Share-based compensation

8.5

'

'

'

8.5

'

'

'

'

'

'

'

Balance at Dec. 31, 2011

3,058.70

6.1

0

1.1

884.2

1,875.30

-2.2

294.2

'

'

'

'

Increase (Decrease) in Stockholders' Equity [Roll Forward]

'

'

'

'

'

'

'

'

'

'

'

'

Net income

379.4

'

'

'

'

377.3

'

2.1

'

'

'

'

Other comprehensive income (loss)

-0.2

'

'

'

'

'

-0.2

'

'

'

'

'

Contributions from noncontrolling interest

7.8

'

'

'

'

'

'

7.8

'

'

'

'

Dividends on common stock

-85.9

'

'

'

'

-85.9

'

'

'

'

'

'

Dividends on preferred stock

'

'

'

'

'

'

'

'

-0.2

-0.2

'

'

Options exercised and stock subscribed, net of shares withheld for employee taxes

-1.1

'

'

'

-1.1

'

'

'

'

'

'

'

Tax benefit from share-based compensation

31.5

'

'

'

31.5

'

'

'

'

'

'

'

Share-based compensation

10.7

'

'

'

10.7

'

'

'

'

'

'

'

Balance at Dec. 31, 2012

3,400.70

6.1

0

1.1

925.3

2,166.50

-2.4

304.1

'

'

'

'

Increase (Decrease) in Stockholders' Equity [Roll Forward]

'

'

'

'

'

'

'

'

'

'

'

'

Net income

353.3

'

'

'

'

351.4

'

1.9

'

'

'

'

Other comprehensive income (loss)

0.4

'

'

'

'

'

0.4

'

'

'

'

'

Dividends on common stock

-94.8

'

'

'

'

-94.8

'

'

'

'

'

'

Dividends on preferred stock

'

'

'

'

'

'

'

'

-0.2

-0.2

'

'

Options exercised and stock subscribed, net of shares withheld for employee taxes

-0.6

'

'

'

-0.6

'

'

'

'

'

'

'

Tax benefit from share-based compensation

4.2

'

'

'

4.2

'

'

'

'

'

'

'

Share-based compensation

13.6

'

'

'

13.6

'

'

'

'

'

'

'

Balance at Dec. 31, 2013

$3,676.60

$6.10

$0

$1.10

$942.50

$2,422.90

($2)

$306

'

'

'

'

Consolidated_Statement_of_Chan

Consolidated Statement of Changes in Equity (Parenthetical) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2011
	$25 Par Preferred Stock [Member]	$25 Par Preferred Stock [Member]	$25 Par Preferred Stock [Member]	Series D [Member]
Preferred Stock, Dividends Per Share	$1	$1	$1	$12.81
Preferred Stock, Par Value	$25	$25	$25	$1
Preferred Stock, Dividend Rate	4.00%	4.00%	'	5.13%

Description_of_the_Business

Description of the Business	12 Months Ended
	Dec. 31, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Description of the Business	'
	Description of the Business
	Kansas City Southern (“KCS” or the “Company”), a Delaware corporation, is a holding company with principal operations in rail transportation.
	The Company is engaged primarily in the freight rail transportation business operating through a single coordinated rail network under one reportable business segment. The Company generates revenues and cash flows by providing its customers with freight delivery services both within its regions, and throughout North America through connections with other Class I rail carriers. KCS’s customers conduct business in a number of different industries, including electric-generating utilities, chemical and petroleum products, paper and forest products, agriculture and mineral products, automotive products and intermodal transportation.
	The primary subsidiaries of the Company consist of the following:
	•	The Kansas City Southern Railway Company (“KCSR”), a wholly-owned consolidated subsidiary;
	•	Kansas City Southern de México, S.A. de C.V. (“KCSM”), a wholly-owned consolidated subsidiary which operates under the rights granted by the Concession acquired from the Mexican government in 1997 (the “Concession”) as described below;
	•	Mexrail, Inc. (“Mexrail”), a wholly-owned consolidated subsidiary; which wholly owns The Texas Mexican Railway Company (“Tex-Mex”);
	•	Meridian Speedway, LLC (“MSLLC”), a seventy percent-owned consolidated affiliate. MSLLC owns the former KCSR rail line between Meridian, Mississippi and Shreveport, Louisiana, which is the portion of the KCSR rail line between Dallas, Texas and Meridian known as the “Meridian Speedway”;
	•	KCSM Servicios, S.A. de C.V. (“KCSM Servicios”), a wholly-owned consolidated subsidiary;
	Including equity investments in:
	•	Panama Canal Railway Company (“PCRC”), a fifty percent-owned unconsolidated affiliate which includes Panarail Tourism Company (“Panarail”), a wholly-owned subsidiary of PCRC;
	•	Southern Capital Corporation, LLC (“Southern Capital”), a fifty percent-owned unconsolidated affiliate that owns and leases locomotives and other equipment;
	•	Ferrocarril y Terminal del Valle de México, S.A. de C.V. (“FTVM”), a twenty-five percent-owned unconsolidated affiliate that provides railroad services as well as ancillary services in the greater Mexico City area; and
	•	PTC-220, LLC (“PTC-220”), a fourteen percent-owned unconsolidated affiliate that holds the licenses to large blocks of radio spectrum and other assets for the deployment of positive train control.
	The KCSM Concession. KCSM holds a concession from the Mexican government until June 2047 (exclusive through 2027, subject to certain trackage and haulage rights granted to other concessionaires), which is renewable under certain conditions for an additional period of up to 50 years (the “Concession”). The Concession is to provide freight transportation services over rail lines which are a primary commercial corridor of the Mexican railroad system. These lines include the shortest, most direct rail passageway between Mexico City and Laredo, Texas and serve most of Mexico’s principal industrial cities and three of its major shipping ports. KCSM has the right to use, but does not own, all track and buildings that are necessary for the rail lines’ operation. KCSM is obligated to maintain the right of way, track structure, buildings and related maintenance facilities to the operational standards specified in the Concession agreement and to return the assets in that condition at the end of the Concession period. KCSM was required to pay the Mexican government a concession duty equal to 0.5% of gross revenues during the first 15 years of the Concession period, and on June 24, 2012, KCSM began paying 1.25% of such revenues, which is effective for the remaining years of the Concession period.
	Under the Concession and Mexican law, the Company may freely set rates unless the Mexican government determines that there is no effective competition in Mexico’s rail industry. KCSM is required to register its rates with the Mexican government and to provide railroad services to all users on a fair and non-discriminatory basis and in accordance with efficiency and safety standards approved periodically by the Mexican government. In the event that rates charged are higher than the registered rates, KCSM must reimburse customers with interest, and risk the revocation of the Concession.
	Mexican Railroad Services Law and regulations and the Concession establish several circumstances under which the Concession will terminate: revocation by the Mexican government, statutory appropriation, or KCSM’s voluntary surrender of its rights or liquidation or bankruptcy. The Concession requires the undertaking of capital projects, including those described in a business plan filed every five years with the Mexican government. KCSM submitted its five-year plan with the Mexican government in the fourth quarter of 2012 in which KCSM committed to certain minimum investment and capital improvement goals, which may be waived by the Mexican government upon application for relief for good cause. The Mexican government could also revoke KCSM’s exclusivity after 2027 if it determines that there is insufficient competition.
	The Concession is subject to early termination or revocation under certain circumstances. In the event that the Concession is revoked by the Mexican government, KCSM will receive no compensation. Rail lines and all other fixtures covered by the Concession, as well as all improvements made by KCSM or third parties, will revert to the Mexican government. All other property not covered by the Concession, including all locomotives and railcars otherwise acquired, will remain KCSM’s property. In the event of early termination, or total or partial revocation, the Mexican government would have the right to cause KCSM to lease all service-related assets to it for a term of at least one year, automatically renewable for additional one-year terms up to five years. The amount of the rent would be determined by experts appointed by KCSM and the Mexican government. The Mexican government must exercise this right within four months after early termination or revocation of the Concession. In addition, the Mexican government would have a right of first refusal with respect to certain transfers by KCSM of railroad equipment within 90 days after any revocation of the Concession. The Mexican government may also temporarily seize the rail lines and assets used in operating the rail lines in the event of a natural disaster, war, significant public disturbances, or imminent danger to the domestic peace or economy for the duration of any of the foregoing events; provided, however, that Mexican law requires that the Mexican government pay KCSM compensation equal to damages caused and losses suffered if it effects a statutory appropriation for reasons of the public interest. These payments may not be sufficient to compensate the Company for its losses and may not be made timely.
	Employees and Labor Relations. Approximately 80% of KCSR employees are covered by collective bargaining agreements. KCSR participates in industry-wide bargaining as a member of the National Carriers’ Conference Committee. Long-term settlement agreements were reached and ratified during 2011 and the first half of 2012 covering all of the participating unions. These agreements will be in effect through December 2015.
	KCSM Servicios union employees are covered by one labor agreement, which was signed on June 23, 1997, between KCSM and the Sindicato de Trabajadores Ferrocarrileros de la República Mexicana (“Mexican Railroad Union”), for a term of fifty years, for the purpose of regulating the relationship between the parties. Approximately 80% of KCSM Servicios employees are covered by this labor agreement. The compensation terms under this labor agreement are subject to renegotiation on an annual basis and all other benefits are subject to negotiation every two years. In July 2013, the negotiation of compensation terms and all other benefits was initiated with the Mexican Railroad Union. The anticipated resolution of this negotiation is not expected to have a material impact to the consolidated financial statements. The union labor negotiations with the Mexican Railroad Union have not historically resulted in any strike, boycott or other disruption in KCSM’s business operations.

Significant_Accounting_Policie

Significant Accounting Policies	12 Months Ended
	Dec. 31, 2013
Accounting Policies [Abstract]	'
Significant Accounting Policies	'
	Significant Accounting Policies
	Principles of Consolidation. The accompanying consolidated financial statements are presented using the accrual basis of accounting and include the Company and its majority-owned subsidiaries. All significant intercompany accounts and transactions have been eliminated. Certain prior year amounts have been reclassified to conform to the current year presentation.
	The equity method of accounting is used for all entities in which the Company or its subsidiaries have significant influence, but not a controlling interest. The Company evaluates less-than-majority-owned investments for consolidation pursuant to consolidation and variable interest entity guidance. The Company does not have any less-than-majority-owned investments requiring consolidation.
	Use of Estimates. The accounting and financial reporting policies of the Company conform to accounting principles generally accepted in the United States (“U.S. GAAP”). The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenues and expenses during the reporting period. Significant items subject to such estimates and assumptions include those related to the recoverability and useful lives of assets, personal injury claims, litigation provisions and income taxes. Changes in facts and circumstances may result in revised estimates and actual results could differ from those estimates.
	Revenue Recognition. The Company recognizes freight revenue based upon the percentage of completion of a commodity movement as a shipment moves from origin to destination, with the related expense recognized as incurred. Other revenues, in general, are recognized when the product is shipped, as services are performed or contractual obligations are fulfilled.
	Foreign Exchange Gain (Loss). For financial reporting purposes, foreign subsidiaries maintain records in U.S. dollars, which is the functional currency. The dollar is the currency that reflects the economic substance of the underlying events and circumstances relevant to the entity. Monetary assets and liabilities denominated in pesos are remeasured into dollars using current exchange rates. The difference between the exchange rate on the date of the transaction and the exchange rate on the settlement date, or balance sheet date if not settled, is included in the income statement as foreign exchange gain or loss.
	Cash Equivalents. Short-term liquid investments with an initial maturity of three months or less are classified as cash and cash equivalents.
	Accounts Receivable, net. Accounts receivable are net of an allowance for uncollectible accounts as determined by historical experience and adjusted for economic uncertainties or known trends. Accounts are charged to the allowance when a customer enters bankruptcy, when an account has been transferred to a collection agent or submitted for legal action, or when a customer is significantly past due and all available means of collection have been exhausted. At December 31, 2013 and 2012, the allowance for doubtful accounts was $4.2 million and $3.2 million, respectively. For the years ended December 31, 2013 and 2011, bad debt expense was $0.5 million and $0.9 million, respectively. Accounts receivable allowance recovery was $0.1 million for the year ended December 31, 2012.
	Materials and Supplies. Materials and supplies consisting of diesel fuel, items to be used in the maintenance of rolling stock and items to be used in the maintenance or construction of road property are valued at average cost.
	Derivative Instruments. Derivatives are measured at fair value and recorded on the balance sheet as either assets or liabilities. Changes in the fair value of derivatives are recorded either through current earnings or as other comprehensive income, depending on hedge designation. Gains and losses on derivative instruments classified as cash flow hedges are reported in other comprehensive income and are reclassified into earnings in the periods in which earnings are impacted by the variability of the cash flow of the hedged item. The ineffective portion of all hedge transactions is recognized in current period earnings.
	Restricted Funds. Restricted funds represents cash held by MSLLC which is restricted for use by KCS. These funds are restricted until they are used by MSLLC for specified property additions on the Meridian Speedway.
	Property and Equipment (including Concession Assets). KCS capitalizes costs for self-constructed additions and improvements to property including direct labor and material, indirect overhead costs, and interest during long-term construction projects. Direct costs are charged to capital projects based on the work performed and the material used. Indirect overhead costs are allocated to capital projects as a standard percentage, which is evaluated annually, and applied to direct labor and material costs. Asset removal activities are performed in conjunction with replacement activities; therefore, removal costs are estimated based on a standard percentage of direct labor and indirect overhead costs related to capital replacement projects. For purchased assets, all costs necessary to make the asset ready for its intended use are capitalized. Expenditures that significantly increase asset values, productive capacity, efficiency, safety or extend useful lives are capitalized. Repair and maintenance costs are expensed as incurred.
	Property and equipment are carried at cost and are depreciated primarily on the group method of depreciation, which the Company believes closely approximates a straight line basis over the estimated useful lives of the assets measured in years. Technology assets and leasehold improvements are depreciated using the straight line method over the lesser of the estimated useful lives of the assets or the lease term. Costs incurred by the Company to acquire the concession rights and related assets, as well as subsequent improvements to the concession assets, are capitalized and amortized using the group method of depreciation over the lesser of the current expected Concession term, including probable renewal of an additional 50-year term, or the estimated useful lives of the assets and rights.
	The group method of depreciation applies a composite rate to classes of similar assets rather than to individual assets. Composite depreciation rates are based upon the Company’s estimates of the expected average useful lives of assets as well as expected net salvage value at the end of their useful lives. In developing these estimates, the Company utilizes periodic depreciation studies performed by an independent engineering firm. Depreciation rate studies are performed at least every three years for equipment and at least every six years for road property (rail, ties, ballast, etc.). The depreciation studies take into account factors such as:
	•	Statistical analysis of historical patterns of use and retirements of each asset class;
	•	Evaluation of any expected changes in current operations and the outlook for the continued use of the assets;
	•	Evaluation of technological advances and changes to maintenance practices; and
	•	Historical and expected salvage to be received upon retirement.
	The depreciation studies may also indicate that the recorded amount of accumulated depreciation is deficient or in excess of the amount indicated by the study. Any such deficiency or excess is amortized as a component of depreciation expense over the remaining useful lives of the affected asset class, as determined by the study. The Company also monitors these factors in non-study years to determine if adjustments should be made to depreciation rates. Any changes in depreciation rates are implemented prospectively. The Company completed a depreciation study on its U.S. based assets during 2012 and the depreciation impacts of the study results were immaterial to 2012 consolidated financial results.
	During the year ended December 31, 2011, KCS engaged an independent engineering firm to assist management in performing a depreciation study on KCSM’s road property and equipment. The depreciation impacts of the study results were immaterial to 2011 consolidated financial results.
	Also under the group method of depreciation, the cost of railroad property and equipment (net of salvage or sales proceeds) retired or replaced in the normal course of business is charged to accumulated depreciation with no gain or loss recognized. Actual historical costs are retired when available, such as with equipment costs. The use of estimates in recording the retirement of roadway assets is necessary as it is impractical to track individual, homogeneous network-type assets. Certain types of roadway assets are retired using statistical curves derived from the depreciation studies that indicate the relative distribution of the age of the assets retired. For other roadway assets, historical costs are estimated by (1) deflating current costs using inflation indices published by the U.S. Bureau of Labor Statistics and (2) the estimated useful life of the assets as determined by the depreciation studies. The indices applied to the replacement value are selected because they closely correlate with the major costs of the items comprising the roadway assets. Because of the number of estimates inherent in the depreciation and retirement processes and because it is impossible to precisely estimate each of these variables until a group of assets is completely retired, the Company continually monitors the estimated useful lives of its assets and the accumulated depreciation associated with each asset group to ensure the depreciation rates are appropriate. Gains or losses on dispositions of land or non-group property and abnormal retirements of railroad property are recognized through income. A retirement of railroad property would be considered abnormal if the cause of the retirement is unusual in nature and its actual life is significantly shorter than what would be expected for that group based on the depreciation studies. An abnormal retirement could cause the Company to re-evaluate the estimated useful life of the impacted asset class.
	Long-lived assets are reviewed for impairment when events or circumstances indicate that the carrying amount of an asset may not be recoverable. If impairment indicators are present and the estimated future undiscounted cash flows are less than the carrying value of the long-lived assets, the carrying value would be reduced to the estimated fair value. Future cash flow estimates for an impairment review would be based on the lowest level of identifiable cash flows, which are the Company’s U.S. and Mexican operations. During the years ended December 31, 2013 and 2012, management did not identify any indicators of impairment.
	Goodwill. Goodwill represents the excess of the purchase price over the fair value of the net identifiable assets acquired in business combinations. As of December 31, 2013 and 2012, the goodwill balance was $13.2 million, which is included in other assets in the consolidated balance sheets. Goodwill is not amortized, but is reviewed at least annually, or more frequently as indicators warrant, for impairment. An impairment loss would be recognized to the extent that the carrying amount exceeds the assets’ fair values. The Company performed its annual impairment review for goodwill as of November 30, 2013 and 2012, and concluded there was no impairment.
	Fair Value of Financial Instruments. Non-financial assets and liabilities are recognized at fair value on a nonrecurring basis. These assets and liabilities are measured at fair value on an ongoing basis but are subject to fair value only in certain circumstances. Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. The Company determines the fair values of its financial instruments based on the fair value hierarchy which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The hierarchy is broken down into three levels based upon the observability of inputs. Fair values determined by Level 1 inputs utilize quoted prices (unadjusted) in active markets for identical assets or liabilities that the Company has the ability to access. Level 2 inputs include quoted prices for similar assets and liabilities in active markets, and inputs other than quoted prices that are observable for the asset or liability. Level 3 inputs are unobservable inputs for the asset or liability, and include situations where there is little, if any, market activity for the asset or liability. In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, the level in the fair value hierarchy within which the fair value measurement in its entirety falls has been determined based on the lowest level input that is significant to the fair value measurement in its entirety. The Company’s assessment of the significance of a particular input to the fair value in its entirety requires judgment and considers factors specific to the asset or liability.
	Environmental Liabilities. The Company records liabilities for remediation and restoration costs related to past activities when the Company’s obligation is probable and the costs can be reasonably estimated. Costs of future expenditures for environmental remediation are not discounted to their present value. Recoveries of environmental remediation costs from other parties are recorded as assets when their receipt is deemed probable. Costs of ongoing compliance activities related to current operations are expensed as incurred.
	Personal Injury Claims. Personal injury claims in excess of self-insurance levels are insured up to certain coverage amounts, depending on the type of claim and year of occurrence. The Company’s personal injury liability is based on actuarial studies performed on an undiscounted basis by an independent third party actuarial firm and reviewed by management. The liability is based on claims filed and an estimate of claims incurred but not yet reported. Adjustments to the liability are reflected as operating expenses in the period in which the adjustments are known. Legal fees related to personal injury claims are recorded in operating expense in the period incurred.
	Health and Welfare and Postemployment Benefits. The Company provides certain medical, life and other postemployment benefits to certain active employees and retirees. The Company uses actuaries to assist management in measuring the benefit obligation and cost based on the current plan provisions, employee demographics, and assumptions about financial and demographic factors affecting the probability, timing and amount of expected future benefit payments. Significant assumptions include the discount rate, rate of increase in compensation levels, and the health care cost trend rate. Actuarial gains and losses determined at the measurement date (typically December 31) are recognized immediately in the consolidated statements of income.
	Employees’ Statutory Profit Sharing. Mexican employees are statutorily entitled to receive Participacion a los Trabajadores de las Utilidades (referred to by its Spanish acronym, PTU or Statutory Profit Sharing). This payment is based on an employer’s net profit based on accounting principles as prescribed in Mexican law, rather than net profit based on U.S. GAAP. Deferred employees’ statutory profit sharing is accounted for using the liability method in a manner similar to income taxes and included as a component of compensation and benefits within the consolidated statements of income.
	Share-Based Compensation. The Company accounts for all share-based compensation in accordance with fair value recognition provisions. Under this method, compensation expense is measured at grant date fair value net of estimated forfeitures, and is recognized over the requisite service period in which the award is earned.
	The Company issues treasury stock to settle share-based awards. The Company does not intend to repurchase any shares in 2014 to provide shares to issue as share-based awards; however, management frequently evaluates the appropriateness of the level of shares outstanding.
	Income Taxes. Deferred income tax effects of transactions reported in different periods for financial reporting and income tax return purposes are recorded under the liability method of accounting for income taxes. This method gives consideration to the future tax consequences of the deferred income tax items and immediately recognizes changes in income tax laws in the year of enactment. In addition, the Company has not provided U.S. federal income taxes on the undistributed operating earnings of its foreign investments since the earnings will be reinvested indefinitely or the earnings will be remitted in a tax-free transaction.
	The Company has recognized a deferred tax asset, net of a valuation allowance, for net operating loss carryovers. The Company projects sufficient future taxable income to realize the deferred tax asset recorded less the valuation allowance. These projections take into consideration assumptions about inflation rates, currency fluctuations, future income and future capital expenditures. If assumptions or actual conditions change, the deferred tax asset, net of the valuation allowance, will be adjusted to properly reflect the expected tax benefit.
	New Accounting Pronouncements
	Effective January 1, 2013, the Company adopted, on a prospective basis, the new guidance issued by the Financial Accounting Standards Board related to the disclosure of amounts reclassified out of accumulated other comprehensive income by component and line item within the consolidated statements of income.

Earnings_Per_Share

Earnings Per Share	12 Months Ended
	Dec. 31, 2013
Earnings Per Share [Abstract]	'
Earnings Per Share	'
	Earnings Per Share
	Basic earnings per common share is computed by dividing net income available to common stockholders by the weighted-average number of common shares outstanding for the period. Diluted earnings per share adjusts basic earnings per common share for the effects of potentially dilutive common shares, if the effect is not anti-dilutive. Potentially dilutive common shares include the dilutive effects of shares issuable under the Stock Option and Performance Award Plan and shares issuable upon the conversion of preferred stock to common stock. During the first quarter of 2011, the Company converted all of the remaining outstanding Cumulative Convertible Perpetual Preferred Stock, Series D, into 6,999,887 shares of common stock.
	The following table reconciles the basic earnings per share computation to the diluted earnings per share computation (in millions, except share and per share amounts):
		2013			2012			2011
	Net income available to common stockholders for purposes of computing basic earnings per share	$	351.2		$	377.1		$	328.7
	Effect of dividends on conversion of convertible preferred stock	—			—			1.3
	Net income available to common stockholders for purposes of computing diluted earnings per share	$	351.2		$	377.1		$	330
	Weighted-average number of shares outstanding (in thousands):
	Basic shares	109,973			109,712			108,208
	Additional weighted average shares attributable to:
	Convertible preferred stock	—			—			1,245
	Stock options and nonvested shares	367			368			377
	Diluted shares	110,340			110,080			109,830
	Basic earnings per share	$	3.19		$	3.44		$	3.04
	Diluted earnings per share	$	3.18		$	3.43		$	3
	Potentially dilutive shares excluded from the calculation (in thousands):
		2013		2012			2011
	Stock options excluded as their inclusion would be anti-dilutive	57		—			96

Property_and_Equipment_includi

Property and Equipment (including Concession Assets)	12 Months Ended
	Dec. 31, 2013
Property, Plant and Equipment [Abstract]	'
Property and Equipment (including Concession Assets)	'
	Property and Equipment (including Concession Assets)
	The following tables list the major categories of property and equipment, including concession assets, as well as the weighted-average composite depreciation rate for each category (in millions, except percentages):
	As of December 31, 2013	Cost		Accumulated			Net Book		Depreciation
				Depreciation			Value		Rates for 2013
	Land	$	216.4	$	—		$	216.4	N/A
	Concession land rights	141.2		(20.9		)	120.3		1	%
	Rail and other track material	1,617.80		(341.1		)	1,276.70		1.8-3.1%
	Ties	1,425.10		(303.7		)	1,121.40		2.0-4.3%
	Grading	829.6		(129.7		)	699.9		1.1	%
	Bridges and tunnels	606.4		(116.5		)	489.9		1.2	%
	Ballast	602.7		(155.2		)	447.5		2.6-4.8%
	Other (a)	874.1		(252.8		)	621.3		2.9	%
	Total road property	5,955.70		(1,299.0		)	4,656.70		2.7	%
	Locomotives	1,017.40		(193.2		)	824.2		5	%
	Freight cars	362.2		(78.9		)	283.3		3.9	%
	Other equipment	56.6		(14.1		)	42.5		7.4	%
	Total equipment	1,436.20		(286.2		)	1,150.00		4.8	%
	Technology and other	152.8		(111.3		)	41.5		11.6	%
	Construction in progress	171.4		—			171.4		N/A
	Total property and equipment (including concession assets)	$	8,073.70	$	(1,717.4	)	$	6,356.30	N/A
	_____________
	(a)	Other includes signals, buildings and other road assets.
	As of December 31, 2012	Cost		Accumulated			Net Book		Depreciation
				Depreciation			Value		Rates for 2012
	Land	$	208.9	$	—		$	208.9	N/A
	Concession land rights	141.2		(19.5		)	121.7		1	%
	Rail and other track material	1,509.90		(338.8		)	1,171.10		1.8-2.8%
	Ties	1,343.00		(290.9		)	1,052.10		2.0-4.3%
	Grading	827.8		(123.7		)	704.1		1.1	%
	Bridges and tunnels	585.3		(110.7		)	474.6		1.3	%
	Ballast	565.8		(137.6		)	428.2		2.6-4.8%
	Other (a)	832.6		(232.6		)	600		3.1	%
	Total road property	5,664.40		(1,234.3		)	4,430.10		2.8	%
	Locomotives	728.8		(155.6		)	573.2		5.1	%
	Freight cars	196.4		(75.3		)	121.1		4.5	%
	Other equipment	37.4		(10.7		)	26.7		7.4	%
	Total equipment	962.6		(241.6		)	721		5.1	%
	Technology and other	148.1		(101.2		)	46.9		12.7	%
	Construction in progress	156.2		—			156.2		N/A
	Total property and equipment (including	$	7,281.40	$	(1,596.6	)	$	5,684.80	N/A
	concession assets)
	_____________
	(a)	Other includes signals, buildings and other road assets.
	Concession assets, net of accumulated amortization of $444.1 million and $402.7 million, totaled $1,951.0 million and $1,893.9 million at December 31, 2013 and 2012, respectively.
	The Company capitalized $1.1 million, $0.9 million, and $1.0 million of interest for the years ended December 31, 2013, 2012, and 2011, respectively.
	Depreciation and amortization of property and equipment (including concession assets) totaled $223.3 million, $198.8 million and $186.2 million, for 2013, 2012, and 2011, respectively.

Other_Balance_Sheet_Captions

Other Balance Sheet Captions	12 Months Ended
	Dec. 31, 2013
Other Balance Sheet Captions [Abstract]	'
Other Balance Sheet Captions	'
	Other Balance Sheet Captions
	Other Current Assets. Other current assets included the following items at December 31 (in millions):
		2013		2012
	Refundable taxes	$	40.7	$	31.4
	Prepaid expenses	17.7		16.6
	Other	3.3		0.4
	Other current assets	$	61.7	$	48.4
	Accounts Payable and Accrued Liabilities. Accounts payable and accrued liabilities included the following items at December 31 (in millions):
		2013		2012
	Accounts payable	$	200.5	$	169.1
	Accrued wages and vacation	72.7		71.2
	Derailments, personal injury and other claim provisions	47.9		52.7
	Dividends payable	23.8		—
	Income and other taxes	18.5		28.7
	Rents and leases payable	10.9		12.3
	Interest payable	10.3		15.5
	Other	14		15.1
	Accounts payable and accrued liabilities	$	398.6	$	364.6

Fair_Value_Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2013
Fair Value Disclosures [Abstract]	'
Fair Value Measurements	'
	Fair Value Measurements
	The Company’s assets and liabilities recorded at fair value have been categorized based upon a fair value hierarchy as described in Note 2 — “Significant Accounting Policies”. As of December 31, 2013, the Company’s derivative financial instruments are measured at fair value on a recurring basis and consist of interest rate swap agreements and foreign currency forward contract agreements, which are classified as Level 2 valuations. The fair value of interest rate swap liabilities was $0.1 million and $0.9 million as of December 31, 2013 and 2012, respectively. There were no foreign currency forward contract agreements outstanding as of December 31, 2013 and 2012. The Company determines the fair value of its derivative financial instrument positions based upon pricing models using inputs observed from actively quoted markets. Pricing models take into consideration the contract terms as well as other inputs, including, where applicable, forward interest rate curves and market currency exchange rates.
	The Company’s short-term financial instruments include cash and cash equivalents, accounts receivable, and accounts payable. The carrying value of the short-term financial instruments approximates their fair value.
	The fair value of the Company’s debt is estimated using quoted market prices when available. When quoted market prices are not available, fair value is estimated based on current market interest rates for debt with similar maturities and credit quality. The fair value of the Company’s debt was $2,082.9 million and $1,719.9 million at December 31, 2013 and 2012, respectively. The carrying value was $2,188.9 million and $1,607.8 million at December 31, 2013 and 2012, respectively. If the Company’s debt were measured at fair value, the fair value measurements of the individual debt instruments would have been classified as either Level 1 or Level 2 in the fair value hierarchy.

Derivative_Instruments

Derivative Instruments	12 Months Ended
	Dec. 31, 2013
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Derivative Instruments	'
	Derivative Instruments
	In general, the Company enters into derivative transactions in certain situations based on management’s assessment of current market conditions and perceived risks. Management intends to respond to evolving business and market conditions and in doing so, may enter into such transactions as deemed appropriate.
	Credit Risk. As a result of the use of derivative instruments, the Company is exposed to counterparty credit risk. The Company manages this risk by limiting its counterparties to large financial institutions which meet the Company’s credit rating standards and have an established banking relationship with the Company. As of December 31, 2013, the Company did not expect any losses as a result of default of its counterparties.
	Interest Rate Swaps. In the first quarter of 2012, KCSR entered into four amortizing interest rate swaps with an aggregate notional amount of $320.0 million, which were designated as cash flow hedges. The interest rate swaps effectively converted interest payments from variable rates to fixed rates on a portion of KCSR’s outstanding Term Loan Facility and Term Loan A-2. The swaps are highly effective and therefore results in minimal earnings impact associated with the ineffectiveness of these hedges.
	During the second quarter of 2013, KCSR repaid the outstanding balance on the Term Loan Facility and terminated the associated interest rate swaps with an aggregate notional amount of $140.8 million. As a result of the termination, the Company recognized a loss of $0.4 million, which is included in debt retirement costs within the consolidated statements of income. As of December 31, 2013, the remaining hedging instruments associated with the Term Loan A-2 had an aggregate notional amount of $151.1 million at a fixed rate of 0.4942%. Settlements are indexed to the one-month LIBOR and will occur monthly through March 31, 2014.
	Foreign Currency Forward Contracts. The Company’s Mexican subsidiaries have net U.S. dollar-denominated liabilities (primarily debt) which, for Mexican income tax purposes, are subject to periodic revaluation based on changes in the value of the Mexican peso against the U.S. dollar. This revaluation creates fluctuations in the Company’s Mexican cash tax obligation and the effective income tax rate. During the first half of 2013, the Company entered into foreign currency forward contracts with an aggregate notional amount of $325.0 million, to hedge its exposure to this risk. These contracts matured on December 31, 2013, and obligated the Company to purchase a total of Ps.4,202.3 million at a weighted average exchange rate of Ps.12.93 to each U.S. dollar. During December 2013, the Company settled these foreign currency forward contracts by entering into offsetting contracts with an aggregate notional amount of $324.3 million. These offsetting contracts matured on December 31, 2013, and obligated the Company sell a total of Ps.4,202.3 million at a weighted average exchange rate of Ps.12.96 to each U.S. dollar. The Company did not designate any of the foreign currency forward contracts as hedging instruments for accounting purposes and the related net loss was recognized in foreign exchange gain (loss) within the consolidated statements of income. As of December 31, 2013 and 2012, the Company had no outstanding foreign currency forward contracts.
	The following table presents the fair value of derivative instruments included in the consolidated balance sheet (in millions):
		Derivative Liabilities
		Balance Sheet Location		December 31,			December 31, 2012
				2013
	Derivatives designated as hedging instruments:
	Interest rate swaps	Accounts payable and accrued liabilities		$	0.1		$	—
	Interest rate swaps	Other noncurrent liabilities and deferred credits		—			0.9
	Total derivatives designated as hedging instruments			0.1			0.9
	Total derivative liabilities			$	0.1		$	0.9
	The following table presents the amounts affecting the consolidated statements of income for the years ended December 31 (in millions):
	Derivatives in Cash		Amount of Gain/(Loss) Recognized in OCI on Derivative (Effective Portion)								Location of Gain/(Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	Amount of Gain/(Loss) Reclassified from Accumulated OCI into Income (Effective Portion)
	Flow Hedging
	Relationships
			2013			2012			2011			2013			2012			2011
	Interest rate swaps		$	(0.2	)	$	(1.6	)	$	—	Interest expense	$	(0.6	)	$	(0.7	)	$	(0.4	)
											Debt retirement costs	(0.4		)	—			—
	Total		$	(0.2	)	$	(1.6	)	$	—		$	(1.0	)	$	(0.7	)	$	(0.4	)
	Derivatives not designated as hedging instruments										Location of Gain/(Loss) Recognized in Income on Derivative	Amount of Gain/(Loss) Recognized in Income on Derivative
												2013			2012			2011
	Foreign currency forward contracts										Foreign exchange gain (loss)	$	(0.7	)	$	—		$	—
	Total											$	(0.7	)	$	—		$	—
	During the years ended December 31, 2013, 2012 and 2011, there was no ineffectiveness recognized related to cash flow hedges. As of December 31, 2013, the Company expects that approximately $0.1 million of net losses will be reclassified from accumulated other comprehensive loss into interest expense in the first quarter of 2014.

LongTerm_Debt

Long-Term Debt	12 Months Ended
	Dec. 31, 2013
Debt Disclosure [Abstract]	'
Long-Term Debt	'
	Long-Term Debt
	Long-term debt at December 31 (in millions):
		2013		2012
	KCSR
	Revolving credit facility, variable interest rate, due 2017	$	—	$	—
	Term loans, variable interest rate, 1.420% at December 31, 2013, due 2018	245.3		543.8
	RRIF loan, 2.96%, due serially to 2037	52		53.5
	4.30% senior notes, due 2043	445.9		—
	3.85% senior notes, due 2023	199.7		—
	Capital lease obligations, due serially to 2019	9.8		12.1
	Other debt obligations	0.4		0.4
	Tex-Mex
	RRIF loan, 4.29%, due serially to 2030	39.4		41
	KCSM
	Revolving credit facility, variable interest rate, due 2017	—		—
	121/2% senior notes	—		95
	8.0% senior notes, due 2018	62.3		296.9
	65/8% senior notes	—		185
	61/8% senior notes	—		200
	2.35% senior notes, due 2020	274.7		—
	3.0% senior notes, due 2023	448.2		—
	Floating rate senior notes, variable interest rate, 0.9369% at December 31, 2013, due 2016	250		—
	5.737% financing agreement, due 2023	43.8		48.4
	6.195% financing agreement, due 2023	33.9		37.4
	9.310% loan agreements, due 2020	74.6		81.7
	Capital lease obligations, due serially to 2017	7.4		9.8
	Other debt obligations	1.3		2.6
	KCS
	Other debt obligations	0.2		0.2
	Total	2,188.90		1,607.80
	Less: Debt due within one year	332		60.2
	Long-term debt	$	1,856.90	$	1,547.60
	KCSR Debt
	Revolving Credit Facility and Term Loans. On July 12, 2011, KCS together with KCSR and certain subsidiaries named therein as guarantors (the “Subsidiary Guarantors”), entered into an amended and restated credit agreement (the “2011 KCSR Credit Agreement”) with various lenders. The 2011 KCSR Credit Agreement provided KCSR with (i) a five-and-one-half year $300.0 million term loan credit facility (the “Term Loan Facility”) and (ii) a five-year $200.0 million revolving credit facility consisting of a revolving facility up to $200.0 million (the “Revolving Facility”), a letter of credit facility of $25.0 million (the “Letter of Credit Facility”) and a swing line facility of up to $15.0 million (the “Swing Line Facility”). The Letter of Credit Facility and the Swing Line Facility each constitute usage under the Revolving Facility.
	On February 24, 2012, KCS, KCSR and certain other subsidiaries of the Company that guaranty the 2011 KCSR Credit Agreement entered into Amendment No. 1 and Additional Term Advance Agreement (“Amendment No. 1”), which provided for additional Term A advances to KCSR in an aggregate principal amount of $275.0 million (the “Term Loan A-2”) on substantially the same terms as those applicable to the existing Term Loan Facility under the 2011 KCSR Credit Agreement. KCSR borrowed $175.0 million of the Term Loan A-2 on February 24, 2012, and borrowed the remaining $100.0 million of Term Loan A-2 on June 1, 2012. The proceeds of the $275.0 million of borrowings under the Term Loan A-2 and available cash were used to redeem all of KCSR’s 8.0% senior unsecured notes due June 1, 2015.
	On November 21, 2012, KCS, KCSR and certain other subsidiaries of the Company that guaranty the 2011 KCSR Credit Agreement entered into a second amended and restated credit agreement (the “2012 KCSR Credit Agreement”), which eliminated or modified a number of restrictive covenants in KCSR’s facilities in order to achieve consistency between KCSR and firms with investment grade credit ratings. The amendment also included a “fall-away collateral” provision whereby KCSR’s facilities would convert from secured to unsecured obligations if investment grade senior unsecured debt ratings were assigned by at least two of the three primary rating agencies. On November 21, 2012, subsequent to the closing of the 2012 KCSR Credit Agreement, KCSR’s senior unsecured debt rating was upgraded to investment grade by Moody’s Investor Service (“Moody’s”). This action, combined with investment grade ratings previously assigned to KCSR by Fitch Ratings (“Fitch”), triggered the “fall-away collateral” provision and KCSR facilities became unsecured obligations. In the event that KCSR’s senior unsecured debt ratings subsequently fall below investment grade at all three primary rating agencies, collateral would be re-pledged and the facilities would revert to secured obligations. The amendment also incorporated a change in the pricing grid for the Term Loan Facility and the Revolving Facility in the event that KCSR achieved a senior unsecured debt rating of BBB/Baa2 or higher by at least two of the three primary rating agencies. In that event, the floating interest rates paid by KCSR on the Term Loan Facility and the Revolving Facility would thereafter be determined by KCSR’s senior unsecured credit rating rather than by KCSR’s leverage ratio. Depending on KCSR’s credit rating during the life of the 2012 KCSR Credit Agreement, the margin KCSR would pay above the London Interbank Offered Rate (“LIBOR”) at any point would be equal to or lower than 1.50%. This provision did not affect the interest rate on the Term Loan A-2, which remained fixed at the LIBOR plus a margin of 1.25% regardless of KCSR’s leverage ratio or credit rating. In addition to the amendment, KCSR extended the maturities of its Revolving Facility from July 15, 2016 to November 15, 2017, and the Term Loan Facility and Term Loan A-2 from January 15, 2017 to May 15, 2018. KCSR is required to make quarterly principal payments on the term loan facilities.
	On April 29, 2013, KCSR repaid the outstanding $277.5 million principal amount of the Term Loan Facility using a portion of the net proceeds from the issuance of $450.0 million principal amount of the 4.30% senior unsecured notes due May 15, 2043 (the “4.30% Senior Notes”). KCSR has classified the outstanding principal amount of the Term Loan A-2 as current debt as of December 31, 2013, as KCSR intends to repay the outstanding principal amount during the first quarter of 2014.
	KCS and KCSR gave certain representations and warranties that are customary for credit agreements of this type. The 2012 KCSR Credit Agreement also contains affirmative and negative covenants that are customary for credit agreements of this type, including financial maintenance covenants related to a leverage ratio and an interest coverage ratio as defined in the 2012 KCSR Credit Agreement. Similarly, events of default under the 2012 KCSR Credit Agreement are customary for transactions of this type and include, without limitation, non-payment of obligations; breach of any representation or warranty; non-performance of covenants and obligations; default on other indebtedness; certain judgments rendered; a change in control; bankruptcy or insolvency of KCS, KCSR, any restricted subsidiary or any Subsidiary Guarantor; and an impairment of security (if any). The occurrence of an event of default could result in the acceleration of the repayment of any outstanding principal balance of the term loan facilities and the Revolving Facility.
	As of December 31, 2013, KCSR had $200.0 million available under the Revolving Facility, with no outstanding borrowings. As of December 31, 2012, KCSR had $194.7 million available under the Revolving Facility, with no outstanding borrowings and a $5.3 million standby letter of credit issued and outstanding.
	4.30% Senior Notes. On April 29, 2013, KCSR issued the 4.30% Senior Notes due May 15, 2043, which bear interest semiannually at a fixed annual rate of 4.30%. The 4.30% Senior Notes were issued at a discount to par value, resulting in a $4.1 million discount and a yield to maturity of 4.355%. The net proceeds from the offering were used to fund the prepayment of the Term Loan Facility, to finance the purchase of certain leased equipment and for other general corporate purposes. The 4.30% Senior Notes are redeemable at KCSR’s option, in whole or in part, prior to November 15, 2042, by paying the greater of either (i) 100% of the principal amount of the 4.30% Senior Notes to be redeemed or (ii) the sum of the present values of the remaining scheduled payments of principal and interest (exclusive of interest accrued to the date of redemption) discounted to the date of redemption on a semiannual basis (assuming a 360-day year consisting of twelve 30-day months) at the then-current U.S. Treasury rate plus 25 basis points, plus accrued interest to but excluding the redemption date. On or after November 15, 2042, the 4.30% Senior Notes may be redeemed at KCSR’s option, in whole or in part, at any time and from time to time at a redemption price equal to 100% of the principal amount, plus any accrued and unpaid interest.
	3.85% Senior Notes. On October 29, 2013, KCSR issued $200.0 million principal amount of 3.85% senior unsecured notes due November 15, 2023 (the “3.85% Senior Notes), which bear interest semiannually at a fixed annual rate of 3.85%. The 3.85% senior notes were issued at a discount to par value, resulting in a $0.3 million discount and a yield to maturity of 3.866%. The net proceeds from the offering will be used to finance the purchase or replacement of certain equipment under the lease conversion program (the “Lease Conversion Program,” as discussed in Note 19. Subsequent Events) and pay all fees and expenses incurred in connection with the 3.85% Senior Notes offering. Any net proceeds not used for those purposes will be used for general corporate purposes. The 3.85% Senior Notes are redeemable at KCSR’s option, in whole or in part, prior to August 15, 2023, by paying the greater of either (i) 100% of the principal amount of the 3.85% Senior Notes to redeemed or (ii) the sum of the present values of the remaining scheduled payments of principal and interest (exclusive of interest accrued to the date of redemption) discounted to the date of redemption on a semiannual basis (assuming a 360-day year consisting of twelve 30-day months) at the then-current U.S. Treasury rate plus 20 basis points, plus accrued interest to but excluding the redemption date. On or after August 15, 2023, the 3.85% Senior Notes may be redeemed at KCSR’s option, in whole or in part, at any time and from time to time at a redemption price equal to 100% of the principal amount, plus any accrued and unpaid interest.
	All of KCSR’s senior notes described above are unconditionally guaranteed, jointly and severally, on an unsecured senior basis, by KCS and certain domestic subsidiaries of KCS that guarantee the 2011 and 2012 KCSR Credit Agreement (the “Note Guarantors”). KCSR’s senior notes and the note guarantees rank pari passu in right of payment with KCSR’s, KCS’s and the Note Guarantors’ existing and future unsecured, unsubordinated obligations. In addition, KCSR’s senior notes include certain covenants which are customary for these types of debt instruments issued by borrowers with similar credit ratings.
	KCSR RRIF Loan Agreement. On February 21, 2012, KCSR, as borrower, entered into a financing agreement with the United States of America represented by the Secretary of Transportation acting through the Administrator of the Federal Railroad Administration (“FRA”).
	The financing agreement provides KCSR with a 25-year, $54.6 million loan under the Railroad Rehabilitation and Improvement Financing Program (the “KCSR RRIF Loan”). The proceeds of the KCSR RRIF Loan were used to reimburse KCSR for 80% of the purchase price of thirty new locomotives (the “Locomotives”) acquired by KCSR in the fourth quarter of 2011. The outstanding principal balance bears interest at 2.96% per annum. KCSR is required to make quarterly principal and interest payments on the KCSR RRIF Loan commencing March 15, 2012, except for the first payment that was comprised solely of interest accrued from the date the funds were advanced to KCSR, which was February 24, 2012.
	The obligations under the financing agreement are secured by a first priority security interest in the Locomotives and certain related rights. In addition, the Company has agreed to guarantee repayment of the amounts due under the financing agreement and certain related agreements.
	The financing agreement contains representations, warranties, covenants and events of default that are similar to those contained in other KCSR debt agreements. The occurrence of an event of default could result in the acceleration of the repayment of any outstanding principal balance of the KCSR RRIF Loan.
	Tex-Mex Debt
	RRIF Loan Agreement. On June 28, 2005, Tex-Mex entered into an agreement with the FRA to borrow $50.0 million to be used for infrastructure improvements in order to accommodate growing freight rail traffic related to the NAFTA corridor. The note bears interest at 4.29% annually and the principal balance amortizes quarterly with a final maturity of July 13, 2030. The loan was made under the Railroad Rehabilitation and Improvement Financing Program administered by the FRA. The loan is guaranteed by Mexrail, which has issued a Pledge Agreement in favor of the lender equal to the gross revenues earned by Mexrail on per-car fees on traffic crossing the International Rail Bridge in Laredo, Texas. In addition, the Company has agreed to guarantee the scheduled principal payment installments due to the FRA from Tex-Mex under the loan agreement on a rolling five-year basis.
	KCSM Debt
	Revolving Credit Facility. On August 30, 2010, KCSM entered into a secured credit agreement (the “2010 KCSM Credit Agreement”) with various lenders and other institutions which provided KCSM with a three-year $100.0 million revolving credit facility consisting of (i) a revolving facility in an amount up to $100.0 million (the “2010 Revolving Facility”) and, (ii) a letter of credit and a swing line facility in an amount up to $10.0 million each.
	On September 30, 2011, KCSM entered into an amended and restated credit agreement (the “2011 KCSM Credit Agreement”) with various financial institutions. The 2011 KCSM Credit Agreement increased the revolving credit facility to $200.0 million and extended the maturity to September 30, 2016. The 2011 KCSM Credit Agreement included (i) a revolving credit facility up to $200.0 million (the “KCSM Revolving Facility”), (ii) a letter of credit facility up to $15.0 million (the “KCSM Letter of Credit Facility”), and (iii) a swing line facility up to $15.0 million (the “KCSM Swing Line Facility”). The KCSM Letter of Credit Facility and the KCSM Swing Line Facility each constitute usage under the KCSM Revolving Facility.
	On November 29, 2012, KCSM entered into an amended and restated credit agreement (the “2012 KCSM Credit Agreement”) with various financial institutions, which amended and restated the 2011 KCSM Credit Agreement and eliminated or modified a number of restrictive covenants in KCSM’s facility in order to achieve consistency between KCSM and firms with investment grade credit ratings. The amendment also included a “fall-away collateral” provision whereby KCSM’s facility would convert from secured to unsecured obligations if investment grade senior unsecured debt ratings were assigned by at least two of the three primary rating agencies. The upgrade of KCSM’s senior unsecured debt to investment grade by Standard & Poor’s Rating Services in the first quarter of 2013, combined with the investment grade ratings previously assigned to KCSM by Fitch, triggered the “fall-away collateral” provision and KCSM’s credit facility became an unsecured obligation. In the event that KCSM’s senior unsecured debt ratings were subsequently to fall below investment grade at all three primary rating agencies, collateral would be re-pledged and the facility would revert to a secured obligation. The amendment also incorporated a change in the pricing grid in the event that KCSM achieved a senior unsecured debt rating of BBB/Baa2 or higher by at least two of the three primary rating agencies. In that event, the floating interest rates paid by KCSM on the 2012 KCSM Credit Agreement would thereafter be determined by KCSM’s senior unsecured credit rating rather than by KCSM’s leverage ratio. Depending on KCSM’s credit rating during the life of the 2012 KCSM Credit Agreement, the margin KCSM would pay above the LIBOR at any point would be equal to or lower than 1.75%. In addition to the amendment, KCSM extended the maturity of the KCSM Revolving Facility to November 15, 2017.
	KCSM and certain of its subsidiaries have agreed to subordinate payment of certain intercompany debt, certain KCSM subsidiaries guaranteed repayment of the amounts due under the 2012 KCSM Credit Agreement (up to the amount permitted by KCSM’s outstanding indentures) and certain equity interests as defined in the 2012 KCSM Credit Agreement were pledged to secure obligations under the 2012 KCSM Credit Agreement.
	The 2012 KCSM Credit Agreement contains certain representations and warranties that are customary for credit agreements of this type. The 2012 KCSM Credit Agreement also contains affirmative and negative covenants that are customary for credit agreements of this type, including financial maintenance covenants related to a leverage ratio and an interest coverage ratio as defined in the 2012 KCSM Credit Agreement. Similarly, events of default under the 2012 KCSM Credit Agreement include, but are not limited to, certain payment defaults; breach of any representation or warranty; non-performance of covenants and obligations; default on other indebtedness; certain judgments rendered; restrictions or requirements limiting the availability or the transfer of foreign exchange; a change in control; bankruptcy or insolvency of KCSM and certain subsidiaries and obligors; an impairment of security; the failure of subordination; certain actions by a governmental authority; failure to obtain certain consents; and termination of the concession title. The occurrence of an event of default could result in the acceleration of the repayment of any outstanding principal balance of the KCSM Revolving Facility.
	As of December 31, 2013 and 2012, KCSM had no amount outstanding under the KCSM Revolving Facility.
	121/2% Senior Notes. On March 30, 2009, KCSM issued $200.0 million principal amount of 121/2% senior unsecured notes due April 1, 2016 (the “121/2% Senior Notes”), which bore interest semiannually at a fixed annual rate of 121/2%. The 121/2% Senior Notes were issued at a discount to par value, resulting in an $11.0 million discount and a yield to maturity of 133/4%. KCSM used a portion of the net proceeds from the offering to repay all amounts outstanding under a credit agreement KCSM entered into on June 14, 2007.
	During 2010, the Company purchased $101.9 million principal amount of the 121/2% Senior Notes. On April 1, 2013, KCSM redeemed the remaining $98.1 million outstanding principal amount of the 121/2% Senior Notes at a redemption price equal to 106.250% of the principal amount.
	KCSM 8.0% Senior Notes. On January 22, 2010, KCSM issued $300.0 million principal amount of 8.0% senior unsecured notes due February 1, 2018 (the “KCSM 8.0% Senior Notes”), which bear interest semiannually at a fixed annual rate of 8.0%. The KCSM 8.0% Senior Notes were issued at a discount to par value, resulting in a $4.3 million discount and a yield to maturity of 81/4%. KCSM used the net proceeds from the issuance of the KCSM 8.0% Senior Notes and available cash to purchase $290.0 million principal amount of the 93/8% senior unsecured notes due May 1, 2012 tendered under an offer to purchase and pay all fees and expenses incurred in connection with the KCSM 8.0% Senior Notes offering and the tender offer.
	On April 10, 2013, KCSM commenced a cash tender offer for the KCSM 8.0% Senior Notes, $185.0 million principal amount of the 65/8% senior unsecured notes due December 15, 2020 (the “65/8% Senior Notes”), and a portion of the $200.0 million principal amount of 61/8% senior unsecured notes due June 15, 2021 (the “61/8% Senior Notes”). In addition, KCSM concurrently commenced consent solicitations to amend the indentures governing the KCSM 8.0% Senior Notes and the 65/8% Senior Notes to eliminate substantially all of the restrictive covenants and certain events of default contained therein, which became operative on May 3, 2013.
	Through May 8, 2013, KCSM purchased $237.2 million principal amount of the tendered KCSM 8.0% Senior Notes, $181.0 million principal amount of the tendered 65/8% Senior Notes and $149.7 million principal amount of the tendered 61/8% Senior Notes (collectively, the “KCSM Senior Notes Tendered”), in accordance with the terms and conditions of the tender offer using a portion of the proceeds received from the issuance of $275.0 million principal amount of 2.35% senior unsecured notes due May 15, 2020 (the “2.35% Senior Notes”) and $450.0 million principal amount of 3.0% senior unsecured notes due May 15, 2023 (the “3.0% Senior Notes”).
	On January 29, 2014, KCSM announced that it will redeem the outstanding $62.8 million principal amount of the KCSM 8.0% Senior Notes on February 3, 2014, in accordance with the redemption option that allows KCSM to redeem the KCSM 8.0% Senior Notes on or after February 1, 2014, at the redemption price (expressed as a percentage of principal amount) of 104.000%. KCSM has classified the outstanding principal amount of the KCSM 8.0% Senior Notes as current debt as of December 31, 2013.
	65/8% Senior Notes. On December 20, 2010, KCSM issued the 65/8% Senior Notes due December 15, 2020, which bore interest semiannually at a fixed annual rate of 65/8%. On April 10, 2013, KCSM commenced a cash tender offer and consent solicitation for the 65/8% Senior Notes. Through May 8, 2013, KCSM purchased $181.0 million principal amount of the 65/8% Senior Notes as part of the KCSM Senior Notes Tendered, described above. Subsequent to the expiration of the cash tender offer, KCSM redeemed the remaining $4.0 million outstanding principal amount of the 65/8% Senior Notes using cash on hand.
	61/8% Senior Notes. On May 20, 2011, KCSM issued the 61/8% Senior Notes due June 15, 2021 at par, which bore interest semiannually at a fixed annual rate of 61/8%. On April 10, 2013, KCSM commenced a cash tender offer and consent solicitation for the 61/8% Senior Notes. Through May 8, 2013, KCSM purchased $149.7 million principal amount of the 61/8% Senior Notes as part of the KCSM Senior Notes Tendered, described above. Subsequent to the expiration of the cash tender offer, KCSM purchased an additional $20.9 million principal amount of the 61/8% Senior Notes. On December 2, 2013, KCSM redeemed the remaining outstanding $29.4 million principal amount of the 61/8% Senior Notes using a portion of the proceeds received from the issuance of $250.0 million principal amount floating rate senior unsecured notes due October 28, 2016 (the “Floating Rate Senior Notes”).
2.35% Senior Notes. On May 3, 2013, KCSM issued the 2.35% Senior Notes due May 15, 2020, which bear interest semiannually at a fixed annual rate of 2.35%. The 2.35% Senior Notes were issued at a discount to par value, resulting in a $0.3 million discount and a yield to maturity of 2.368%. KCSM used the net proceeds from the issuance of the 2.35% Senior Notes and the 3.0% Senior Notes to purchase the KCSM Senior Notes Tendered, pay all fees and expenses incurred in connection with the 2.35% Senior Notes and 3.0% Senior Notes offerings and the tender offers, to finance the purchase of certain leased equipment and for other general corporate purposes. The 2.35% Senior Notes are redeemable at KCSM’s option, in whole or in part, prior to April 15, 2020, by paying the greater of either (i) 100% of the principal amount of the 2.35% Senior Notes to be redeemed or (ii) the sum of the present values of the remaining scheduled payments of principal and interest (exclusive of interest accrued to the date of redemption) discounted to the date of redemption on a semiannual basis (assuming a 360-day year consisting of twelve 30-day months) at the then-current U.S. Treasury rate plus 20 basis points, plus accrued interest and any additional amounts to but excluding the redemption date. On or after April 15, 2020, the 2.35% Senior Notes may be redeemed at KCSM’s option, in whole or in part, at any time at a redemption price equal to 100% of the principal amount, plus any accrued and unpaid interest. In addition, the notes are redeemable, in whole but not in part, at KCSM’s option at their principal amount, plus any accrued unpaid interest in the event of certain changes in the Mexican withholding tax rate.
3.0% Senior Notes. On May 3, 2013, KCSM issued the 3.0% Senior Notes due May 15, 2023, which bear interest semiannually at a fixed annual rate of 3.0%. The 3.0% Senior Notes were issued at a discount to par value, resulting in a $1.9 million discount and a yield to maturity of 3.048%. KCSM used the net proceeds from the issuance of the 3.0% Senior Notes and the 2.35% Senior Notes to purchase the KCSM Senior Notes Tendered, pay all fees and expenses incurred in connection with the 2.35% Senior Notes and 3.0% Senior Notes offerings and the tender offers, to finance the purchase of certain leased equipment and for other general corporate purposes. The 3.0% Senior Notes are redeemable at KCSM’s option, in whole or in part, prior to February 15, 2023, by paying the greater of either (i) 100% of the principal amount of the 3.0% Senior Notes to be redeemed or (ii) the sum of the present values of the remaining scheduled payments of principal and interest (exclusive of interest accrued to the date of redemption) discounted to the date of redemption on a semiannual basis (assuming a 360-day year consisting of twelve 30-day months) at the then-current U.S. Treasury rate plus 20 basis points, plus accrued interest and any additional amounts to but excluding the redemption date. On or after February 15, 2023, the 3.0% Senior Notes may be redeemed at KCSM’s option, in whole or in part, at any time at a redemption price equal to 100% of the principal amount, plus any accrued and unpaid interest. In addition, the notes are redeemable, in whole but not in part, at KCSM’s option at their principal amount, plus any accrued unpaid interest in the event of certain changes in the Mexican withholding tax rate.
Floating Rate Senior Notes. On October 29, 2013, KCSM issued the Floating Rate Senior Notes due October 28, 2016, which bear interest quarterly at a rate equal to the three-month U.S. dollar LIBOR plus 70 basis points per annum. KCSM used the net proceeds from the issuance of the Floating Rate Senior Notes to pay fees and expenses related to the issuance of the Floating Rate Senior Notes and redeem the outstanding $29.4 million principal amount of the 61/8% Senior Notes. In addition, the Company intends to use the remaining net proceeds to redeem the outstanding $62.8 million principal amount of the KCSM 8.0% Senior Notes during the first quarter of 2014 and to finance the purchase or replacement of certain equipment under the Lease Conversion Program as discussed in Note 19. Subsequent Events. Any net proceeds not used for these purposes will be used for general corporate purposes. The notes are redeemable, in whole but not in part, at KCSM’s option at any time at a redemption price of 100% of their principal amount, plus any accrued unpaid interest in the event of certain changes in the Mexican withholding tax rate.
All of KCSM’s senior notes described above are denominated in U.S. dollars; are unsecured, unsubordinated obligations; rank pari passu in right of payment with KCSM’s existing and future unsecured, unsubordinated obligations and are senior in right of payment to KCSM’s future subordinated indebtedness. In addition, KCSM’s senior notes include certain covenants which are customary for these types of debt instruments issued by borrowers with similar credit ratings and restrict or prohibit certain actions.
KCSM Locomotive Financing
5.737% Financing Agreement. On February 26, 2008, KCSM entered into a financing agreement with Export Development Canada (“EDC”) for an aggregate principal amount of $72.8 million. KCSM used the proceeds to finance 85.0% of the purchase price of forty new SD70ACe locomotives purchased by KCSM in late 2007 and early 2008. KCSM granted EDC a security interest in the locomotives to secure the loan. The financing agreement requires KCSM to make thirty equal semi-annual principal payments of approximately $2.4 million plus interest at an annual rate of 5.737%, with the final payment due and payable on February 28, 2023.
6.195% Financing Agreement. On September 24, 2008, KCSM entered into a financing agreement with DVB Bank AG (“DVB”) for an aggregate principal amount of $52.2 million. KCSM used the proceeds to finance approximately 80% of the purchase price of twenty-nine ES44AC locomotives purchased by KCSM in June 2008. KCSM granted DVB a security interest in the locomotives to secure the loan. The financing agreement requires KCSM to make sixty equal quarterly principal payments plus interest at an annual rate of 6.195%, with the final payment due and payable on September 29, 2023.
9.310% Loan Agreements. On September 1, 2011, KCSM, as borrower, entered into five Loan Agreements (each a “Loan Agreement”, and collectively, the “Loan Agreements”) with General Electric Capital Corporation, as lender (“GE”), each with a principal amount of approximately $18.2 million. KCSM used the loan proceeds to finance approximately 88% of the purchase price of seventy-five GE AC4400 CW locomotives (the “Locomotives”) purchased by KCSM from GE on September 1, 2011. The Locomotives were previously leased by KCSM from GE pursuant to a Lease Agreement dated April 30, 1998. The Lease Agreement, which had been accounted for as an operating lease, was terminated with the purchase of the Locomotives by KCSM. To secure the loans from GE, KCSM transferred legal ownership of the Locomotives to five irrevocable trusts established by KCSM to which GE is the primary beneficiary and KCSM has a right of reversion upon satisfaction of the obligations of the Loan Agreements.
Each Loan Agreement requires KCSM to make thirty-eight quarterly principal payments plus interest at an annual rate of 9.31%, which approximates the implicit interest rate in the Lease Agreement. KCSM generated certain tax benefits as a result of purchasing the locomotives. The first payments were due and payable on September 15, 2011, and the final payments are due and payable on December 15, 2020.
KCSM’s locomotive financing agreements contain representations, warranties and covenants typical of such equipment loan agreements. Events of default in the financing agreements include, but are not limited to, certain payment defaults, certain bankruptcy and liquidation proceedings and the failure to perform any covenants or agreements contained in the financing agreements. Any event of default could trigger acceleration of KCSM’s payment obligations under the terms of the financing agreements.
Debt Covenants Compliance
The Company was in compliance with all of its debt covenants as of December 31, 2013.
Other Debt Provisions
Change in Control Provisions. Certain loan agreements and debt instruments entered into or guaranteed by the Company and its subsidiaries provide for default in the event of a specified change in control of the Company or particular subsidiaries of the Company.
Leases and Debt Maturities
The Company leases transportation equipment, as well as office and other operating facilities, under various capital and operating leases. Rental expenses under operating leases were $106.7 million, $108.8 million, and $120.6 million for the years ended December 31, 2013, 2012, and 2011, respectively. Operating leases that contain scheduled rent adjustments are recognized on a straight-line basis over the term of the lease. Contingent rentals and sublease rentals were not significant. Minimum annual payments and present value thereof under existing capital leases, other debt maturities and minimum annual rental commitments under non-cancelable operating leases are as follows (in millions):
	Long-		Capital Leases						Total		Operating Leases (i)
	Term								Debt
Years	Debt		Minimum		Less		Net				Southern		Third		Total
			Lease		Interest		Present				Capital		Party
			Payments				Value
2014	$	327.9	$	5	$	0.9	$	4.1	$	332	$	8.5	$	90.5	$	99
2015	20.1		5		0.8		4.2		24.3		8.3		78.2		86.5
2016	270.8		4.5		0.6		3.9		274.7		8.3		68.1		76.4
2017	22		2.3		0.3		2		24		8.3		55.1		63.4
2018	35.2		2.2		0.2		2		37.2		8.3		34.9		43.2
Thereafter	1,495.70		1		—		1		1,496.70		30.4		124.7		155.1
Total	$	2,171.70	$	20	$	2.8	$	17.2	$	2,188.90	$	72.1	$	451.5	$	523.6
_____________________
(i)	During the fourth quarter of 2013, the Company initiated the Lease Conversion Program to purchase certain equipment under existing operating leases and to purchase replacement equipment as certain operating leases expire. Refer to Note 19 Subsequent Events for further information.
In the normal course of business, the Company enters into long-term contractual requirements for future goods and services needed for the operations of the business. Such commitments are not in excess of expected requirements and are not reasonably likely to result in performance penalties or payments that would have a material adverse effect on the Company’s liquidity.

Income_Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	Income Taxes
	Current income tax expense represents the amounts expected to be reported on the Company’s income tax returns, and deferred tax expense or benefit represents the change in net deferred tax assets and liabilities. Deferred tax assets and liabilities are determined based on the difference between the financial statement and tax bases of assets and liabilities as measured by the enacted tax rates that will be in effect when these differences reverse. Valuation allowances are recorded as appropriate to reduce deferred tax assets to the amount considered likely to be realized.
	Tax Expense. Income tax expense consists of the following components (in millions):
		2013			2012				2011
	Current:
	Federal	$	6		$	2.8			$	—
	State and local	1.9			0.7				0.7
	Foreign	79.2			36.2				1.7
	Total current	87.1			39.7				2.4
	Deferred:
	Federal	99			99.2				78
	State and local	11.9			(7.4		)		4.5
	Foreign	0.3			105.5				38.2
	Total deferred	111.2			197.3				120.7
	Total income tax expense	$	198.3		$	237			$	123.1
	Income before income taxes consists of the following (in millions):
		2013			2012				2011
	Income before income taxes:
	U.S.	$	319.2		$	282.8			$	231
	Foreign	232.4			333.6				224
	Total income before income taxes	$	551.6		$	616.4			$	455
	The tax effects of temporary differences that give rise to significant portions of the deferred tax assets and deferred tax liabilities follow at December 31 (in millions):
		2013			2012
	Assets:
	Loss carryovers	$	52.6		$	54.3
	Book reserves not currently deductible for tax	94.3			77.1
	Other	64.6			76.1
	Gross deferred tax assets before valuation allowance	211.5			207.5
	Valuation allowance	(3.4		)	(4.3		)
	Net deferred tax assets	208.1			203.2
	Liabilities:
	Depreciation and amortization	(1,047.1		)	(925.5		)
	Investments	(66.3		)	(73.8		)
	Other	(7.7		)	(6.0		)
	Gross deferred tax liabilities	(1,121.1		)	(1,005.3		)
	Net deferred tax liability	$	(913.0	)	$	(802.1	)
	Tax Rates. Differences between the Company’s effective income tax rate and the U.S. federal statutory income tax rate of 35% follow (in millions):
		2013						2012					2011
		Dollars			Percent			Dollars			Percent		Dollars			Percent
	Income tax expense using the statutory rate in effect	$	193.1		35	%		$	215.7		35	%	$	159.3		35	%
	Tax effect of:
	Difference between U.S. and foreign tax rate	(15.4		)	(2.8	%)		(18.4		)	(3.0	%)	(14.5		)	(3.2	%)
	Foreign exchange and inflation adjustments (i)	4.7			0.8	%		42.3			6.9	%	(23.5		)	(5.2	%)
	State and local income tax provision, net	8.9			1.6	%		8.4			1.3	%	7			1.5	%
	Change in valuation allowances	(0.9		)	(0.2	%)		(11.2		)	(1.8	%)	(1.6		)	(0.4	%)
	Tax credits	(4.0		)	(0.7	%)		(3.1		)	(0.5	%)	(2.3		)	(0.5	%)
	Reversal of previously recognized benefit due to court ruling	4.4			0.8	%		—			—		—			—
	Uncertain tax positions	(0.1		)	—			1.9			0.3	%	—			—
	Other, net	7.6			1.4	%		1.4			0.2	%	(1.3		)	(0.1	%)
	Income tax expense	$	198.3		35.9	%		$	237		38.4	%	$	123.1		27.1	%
	_____________________
	(i)	Mexican income taxes paid in Mexico are paid in Mexican pesos, and as a result, the effective income tax rate reflects fluctuations in the value of the Mexican peso against the U.S. dollar. Most significantly, any gain or loss from the revaluation of net U.S. dollar-denominated monetary liabilities (primarily debt) into Mexican pesos is included in Mexican taxable income under Mexican tax law. As a result, a strengthening of the Mexican peso against the U.S. dollar for the reporting period will generally increase the Mexican cash tax obligation and the effective income tax rate, and a weakening of the Mexican peso against the U.S. dollar for the reporting period will generally decrease the Mexican cash tax obligation and the effective tax rate. To hedge its exposure to this risk, during the first half of 2013, the Company entered into foreign currency forward contracts with an aggregate notional amount of $325.0 million. The foreign currency forward contracts were measured at fair value each period and any change in fair value was recognized in foreign exchange gain (loss) within the consolidated statements of income. Refer to Note 7 Derivative Instruments for further information.
	Difference Attributable to Foreign Investments. At December 31, 2013, the Company’s book basis exceeded the tax basis of its foreign investments by $1,329.6 million. The Company has not provided a deferred income tax liability for the income taxes, if any, which might become payable on the realization of this basis difference because the Company intends to indefinitely reinvest in foreign investments the operating earnings which gave rise to the basis differential or remit the earnings in tax-free transactions. Moreover, the Company has no other plans to realize this basis differential by a sale of its interests in foreign investments. If the earnings were to be remitted in a taxable transaction, as of December 31, 2013, the Company would incur gross federal income taxes of $465.4 million which would be partially offset by foreign tax credits.
	Changes in Tax Law. On December 11, 2013, changes to the Mexican Federal Income Tax Law were approved eliminating the statutory income tax rate reduction to 29% for 2014 and 28% for 2015 and thereafter, and leaving the current 30% statutory income tax rate in effect for future years. Additionally, the Entrepreneurial Tax of Unique Rate (referred to by its Spanish acronym, IETU or Flat Tax) has been repealed as of January 1, 2014. The Company's deferred income tax assets and liabilities were revalued using the rates expected to be in effect when the underlying temporary differences are expected to reverse. This revaluation was immaterial to the 2013 tax provision.
	Tax Carryovers. The Company has both U.S. federal and state net operating losses which are carried forward 20 years for federal tax purposes and from 5 to 20 years for state tax purposes. Both the federal and state loss carryovers are analyzed each year to determine the likelihood of realization. The U.S. federal loss carryover at December 31, 2013, was $7.1 million and if not used, would begin to expire in 2023. The Company has $29.1 million of tax credit carryovers consisting primarily of $23.1 million of track maintenance credits which, if not used, will begin to expire in 2026, and $1.5 million of alternative minimum tax credits, which do not expire.
	The state loss carryovers arise from both combined and separate tax filings from as early as 1999. The loss carryovers may expire as early as December 31, 2014 and as late as December 31, 2032. The state loss carryover at December 31, 2013, was $437.1 million.
	The Mexico federal loss carryovers at December 31, 2013, were $108.5 million and will begin to expire in 2016. A deferred tax asset was recorded in prior periods for the expected future tax benefit of these losses which will be carried forward to reduce only ordinary Mexican income tax payable in future years. A deferred tax asset is also recorded for an asset tax credit carryover in the amount of $6.2 million, which will begin to expire in 2017.
	The valuation allowance for deferred tax assets as of December 31, 2013 and 2012, was $3.4 million and $4.3 million, respectively.
	The Company believes it is more likely than not that the results of future operations will generate sufficient taxable income to realize the deferred tax assets, net of valuation allowances, related to loss carryovers and tax credits.
	Uncertain Tax Positions. The accounting guidance for uncertainty in income taxes prescribes a recognition threshold and measurement attribute for the financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return. The guidance requires the Company to recognize in the consolidated financial statements the benefit of a tax position only if the impact is more likely than not of being sustained on audit based on the technical merits of the position. A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows (in millions):
		2013			2012
	Balance at January 1,	$	3.6		$	1.7
	Additions based on tax positions related to the current year	—			0.9
Additions for tax positions of prior years	—			1
Reductions for tax positions of prior years	(0.1		)	—
Balance at December 31,	$	3.5		$	3.6
All of the unrecognized tax benefits would affect the effective income tax rate if recognized and is not expected to significantly change in the next twelve months.
Interest and penalties related to uncertain tax positions are included in income before taxes on the consolidated statements of income. Accrued interest and penalties on unrecognized tax benefits and interest and penalty expense was immaterial to the consolidated financial statements for all periods presented.
Tax Contingencies. In the U.S., federal tax returns filed for periods after 2009 remain open to examination by the IRS. In 2014, the IRS initiated an examination on the 2011 and 2012 federal tax returns. State income tax returns generally remain open to examination for three to four years following the filing of the return.
In Mexico, tax returns filed for periods after 2007 were filed on a separate company basis and remain open to examination by the taxing authorities. KCSM’s 2007 and 2010 tax returns are currently under examination by the Servicio de Administracion Tributaria (the “SAT”), the Mexican equivalent of the IRS. The Company received audit assessments for KCSM for the year ended December 31, 2005, and NAFTA Rail, S.A. de C.V. for the year ended December 31, 2009, from the SAT. The Company initiated administrative proceedings with the SAT for both audits and in June 2013 settled the NAFTA Rail, S.A. de C.V. assessment for an immaterial amount. The KCSM assessment is being litigated. The Company believes it has strong legal arguments in its favor and more likely than not will prevail in challenging the KCSM assessment. While the outcome of this matter cannot be predicted with certainty, the Company does not believe, when resolved, that this dispute will have a material effect on its consolidated financial statements. However, an unexpected adverse resolution could have a material effect on the consolidated financial statements in a particular quarter or fiscal year.
KCSM has not historically assessed Value Added Tax (“VAT”) on international import transportation services provided to its customers based on a written ruling that KCSM obtained from the SAT in 2008 stating that such services were exempt from VAT (the “2008 Ruling”). Notwithstanding the 2008 Ruling, in December 2013, the SAT unofficially informed KCSM of an intended implementation of a new criteria effective as of January 1, 2014, pursuant to which VAT would be assessed on all international import transportation services on the portion of the services provided within Mexico.  Additionally, in November 2013, the SAT filed an action to nullify the 2008 Ruling, potentially exposing the application of the new criteria to open tax years. KCSM intends to file an action opposing the SAT’s nullification action.  While the SAT’s unofficial communication to KCSM is not enforceable and the 2008 Ruling continues to be in effect, KCSM notified its customers in December 2013 of the potential assessment of VAT on international import transportation services as of January 1, 2014, and is addressing required changes in KCSM billing systems; however, this VAT assessment has not been implemented as of the date of this filing.  Due to the pass-through nature of VAT assessed on services provided to customers, the Company does not believe any ultimate requirement to assess VAT on international import transportation services as of January 1, 2014 will have a significant effect on its consolidated financial statements. However, unexpected adverse implementation criteria imposed by the SAT for open tax years could have a material effect on the consolidated financial statements of the Company in a particular quarter or fiscal year.

Stockholders_Equity

Stockholders' Equity	12 Months Ended
	Dec. 31, 2013
Stockholders' Equity Note [Abstract]	'
Stockholders' Equity	'
	Stockholders’ Equity
	Information regarding the Company’s capital stock at December 31 follows:
		Shares Authorized						Shares Issued
		2013			2012			2013			2012
	$25 par, 4% noncumulative, preferred stock	840,000			840,000			649,736			649,736
	$1 par, preferred stock	2,000,000			2,000,000			—			—
	$.01 par, common stock	400,000,000			400,000,000			123,352,185			123,352,185
	Shares outstanding at December 31:
		2013			2012
	$25 par, 4% noncumulative, preferred stock	242,170			242,170
	$.01 par, common stock	110,229,229			110,131,353
	Treasury Stock. Shares of common stock in Treasury and related activity follow:
		2013			2012			2011
	Balance at beginning of year	13,220,832			13,441,328			13,703,453
	Shares issued to fund stock option exercises	(54,209	)		(141,728	)		(158,440	)
	Employee stock purchase plan shares issued	(42,391	)		(44,319	)		(59,390	)
	Nonvested shares issued	(5,723	)		(56,136	)		(57,659	)
	Nonvested shares forfeited	4,447			21,687			13,364
	Balance at end of year	13,122,956			13,220,832			13,441,328
	Conversion of Cumulative Convertible Perpetual Preferred Stock, Series D. On December 9, 2005, KCS completed the sale and issuance of 210,000 shares of its 5.125% Series D Convertible Preferred Stock, par value $1.00 per share (“Series D Preferred Stock”). Each share of Series D Preferred Stock was convertible into 33.3333 shares of KCS common stock, subject to certain adjustments. Dividends on the Series D Preferred Stock were cumulative and payable quarterly in any combination of cash and KCS common stock, as declared by the KCS Board of Directors, at the rate of 5.125% per annum of the liquidation preference of $1,000. During the first quarter of 2011, the Company converted all of the remaining outstanding 209,995 shares of the Series D Preferred Stock into 6,999,887 shares of KCS common stock. On May 5, 2011, the Company’s Restated Certificate of Incorporation was amended to eliminate the Series D Preferred Stock and change the status to undesignated preferred stock of the Company.
	Change in Control Provisions. The Company and certain of its subsidiaries have entered into agreements with employees whereby, upon defined circumstances constituting a change in control of the Company or subsidiary, certain stock options become exercisable, certain benefit entitlements are automatically funded and such employees are entitled to specified cash payments upon termination of employment.
	The Company and certain of its subsidiaries have established trusts to provide for the funding of corporate commitments and entitlements of officers, directors, employees and others in the event of a specified change in control of the Company or subsidiary. Assets held in such trusts on December 31, 2013 and 2012, were not material. Depending upon the circumstances at the time of any such change in control, the most significant of which would be the price paid for KCS common stock by a party seeking to control the Company, funding of the Company’s trusts could be substantial.
	Accumulated Other Comprehensive Loss. The following table summarizes the changes in the after-tax balances of each component of accumulated other comprehensive income (loss) (in millions):
		Postemployment Benefits				Foreign Currency Translation Adjustment				Unrealized Loss on Cash Flow Hedges				Accumulated Other Comprehensive Loss
	Balance at December 31, 2011	$	0.5			$	(2.7	)		$	—			$	(2.2	)
	Other comprehensive income (loss) before reclassifications	—				0.5				(1.0		)		(0.5		)
	Amounts reclassified from accumulated other comprehensive loss	(0.1		)		—				0.4				0.3
	Net current-period other comprehensive income (loss)	(0.1		)		0.5				(0.6		)		(0.2		)
	Balance at December 31, 2012	0.4				(2.2		)		(0.6		)		(2.4		)
	Other comprehensive loss before reclassifications	—				—				(0.2		)		(0.2		)
	Amounts reclassified from accumulated other comprehensive loss	(0.1		)		—				0.7				0.6
	Net current-period other comprehensive income (loss)	(0.1		)		—				0.5				0.4
	Balance at December 31, 2013	$	0.3			$	(2.2	)		$	(0.1	)		$	(2.0	)
	The following table summarizes the effects on net income of significant amounts being reclassified out of each component of accumulated other comprehensive income (loss) for the year ended December 31 (in millions):
	Details about Accumulated Other Comprehensive Income (Loss) Components		2013				2012				2011				Affected Line Item in the Consolidated Statements of Income
	Unrealized losses on cash flow hedges:
	Interest rate swaps		$	(0.6	)		$	(0.7	)		$	(0.4	)		Interest expense
			(0.4		)		—				—				Debt retirement costs
	Total before tax		(1.0		)		(0.7		)		(0.4		)
	Tax effect		0.3				0.3				0.2				Income tax expense
	Net of tax		(0.7		)		(0.4		)		(0.2		)
	Postemployment benefits:
	Amortization of prior service credit		0.2				0.2				0.3				Compensation and benefits expense
	Total before tax		0.2				0.2				0.3
	Tax effect		(0.1		)		(0.1		)		(0.1		)		Income tax expense
	Net of tax		0.1				0.1				0.2
	Total reclassification for the period, net of tax		$	(0.6	)		$	(0.3	)		$	—
	Cash Dividends on Common Stock. The following table presents the amount of cash dividends declared per common share by the Company’s Board of Directors:
		2013				2012				2011
	Cash dividends declared per common share	$	0.86			$	0.78			$	—

ShareBased_Compensation

Share-Based Compensation	12 Months Ended
	Dec. 31, 2013
Share-based Compensation [Abstract]	'
Share-Based Compensation	'
	Share-Based Compensation
	On October 7, 2008, the Company’s stockholders approved the Kansas City Southern 2008 Stock Option and Performance Award Plan (the “2008 Plan”). The 2008 plan became effective on October 14, 2008 and replaced the Kansas City Southern 1991 Amended and Restated Stock Option and Performance Award Plan (the “1991 Plan”). The 2008 Plan provides for the granting of up to 2.3 million shares of the Company’s common stock to eligible persons as defined in the 2008 Plan. Outstanding equity awards granted under the 1991 Plan and the 2008 Plan (the “Plans”) are to be governed by the terms and conditions of each individual plan and the related award agreements.
	Stock Options. The exercise price for the options granted under the 2008 Plan equals the closing market price of the Company’s stock on the date of grant. Under the 1991 Plan, options were granted at the average market price of the Company’s stock on the date of grant. Options generally have either a 3 or 5 year cliff vesting period and are exercisable over the 10 year contractual term, except that options outstanding become immediately exercisable upon certain defined circumstances constituting a change in control of the Company. The grant date fair value, less estimated forfeitures, is recorded to expense on a straight-line basis over the vesting period.
	The fair value of each option award is estimated on the date of grant using the Black-Scholes option pricing model. The weighted-average assumptions used were as follows:
		2013				2012				2011
	Expected dividend yield	0.88		%		0		%		0		%
	Expected volatility	46.12		%		46.59		%		45.4		%
	Risk-free interest rate	1.11		%		0.46		%		1.29		%
	Expected term (years)	6				6				6
	Weighted-average grant date fair value of stock options granted	$	40.05			$	29.45			$	23.39
	The expected dividend yield for 2012 was 0% as all stock options were granted prior to the initial dividend declaration on March 30, 2012. The expected volatility is based on the historical volatility of the Company’s stock price over a term equal to the estimated life of the options. The risk-free interest rate is determined based on U.S. Treasury rates for instruments with terms approximating the expected life of the options granted, which represents the period of time the awards are expected to be outstanding and is based on the historical experience of similar awards.
	The following table summarizes the stock option activity under the Plans:
		Number of			Weighted-				Weighted-		Aggregate
		Shares			Average				Average		Intrinsic
					Exercise				Remaining		Value
					Price				Contractual
					Per Share				Term
									In years		In millions
	Options outstanding at December 31, 2012	368,071			$	43.67
	Granted	57,406			97.77
	Exercised	(61,845	)		27.28
	Forfeited or expired	(873	)		77.83
	Options outstanding at December 31, 2013	362,759			$	54.94			7		$	25
	Vested and expected to vest at December 31, 2013	359,410			$	54.76			6.98		$	24.8
	Exercisable at December 31, 2013	228,457			$	42.56			6.23		$	18.6
	Compensation cost of $2.4 million, $1.8 million, and $2.2 million was recognized for stock option awards for the years ended December 31, 2013, 2012, and 2011, respectively. The total income tax benefit recognized in the consolidated statements of income was $0.9 million, $0.7 million, and $0.8 million for the years ended December 31, 2013, 2012 and 2011, respectively.
	Additional information regarding stock option exercises appears in the table below (in millions):
		2013				2012				2011
	Aggregate grant-date fair value of stock options vested	$	1.8			$	1.3			$	1.1
	Intrinsic value of stock options exercised	5				12.1				9.5
	Cash received from option exercises	1.5				1.9				2.1
	Tax benefit realized from options exercised during the annual period	1.9				4.6				0.2
	As of December 31, 2013, $1.2 million of unrecognized compensation cost relating to nonvested stock options is expected to be recognized over a weighted-average period of 1.0 year. At December 31, 2013, there were 1,163,118 shares available for future grants under the 2008 Plan.
	Nonvested Stock. The Plans provide for the granting of nonvested stock awards to officers and other designated employees. The grant date fair value is based on the average market price of the stock (under the 1991 Plan) or the closing market price (under the 2008 Plan) on the date of the grant. These awards are subject to forfeiture if employment terminates during the vesting period, which is generally 3 year or 5 year cliff vesting for employees. Awards granted to the Company’s directors vest immediately on date of grant. The grant date fair value of nonvested shares, less estimated forfeitures, is recorded to compensation expense on a straight-line basis over the vesting period.
	A summary of nonvested stock activity is as follows:
		Number of			Weighted-				Aggregate
		Shares			Average Grant				Intrinsic
					Date Fair				Value
					Value
									In millions
	Nonvested stock at December 31, 2012	278,967			$	49.37
	Granted	46,031			103.38
	Vested	(118,491	)		47.25
	Forfeited	(4,447	)		45.65
	Nonvested stock at December 31, 2013	202,060			$	63			$	25
	The fair value (at vest date) of shares vested during the years ended December 31, 2013, 2012, and 2011 was $12.2 million, $7.8 million, and $9.9 million, respectively.
	The weighted-average grant date fair value of nonvested stock granted during 2013, 2012, and 2011 was $103.38, $70.98 and $54.74, respectively. Compensation cost for nonvested stock was $5.6 million, $4.4 million, and $4.7 million for the years ended December 31, 2013, 2012, and 2011, respectively. The total income tax benefit recognized in the consolidated statements of income was $2.1 million, $1.6 million, and $1.7 million for the years ended December 31, 2013, 2012, and 2011, respectively.
	As of December 31, 2013, $6.0 million of unrecognized compensation costs related to nonvested stock is expected to be recognized over a weighted-average period of 1.4 years.
	Performance Based Awards. The Company granted performance based nonvested stock awards during 2013 (the “2013 Awards”), 2012 (the “2012 Awards”) and 2011 (the “2011 Awards”). The awards granted provide a target number of shares that generally vest at the end of a 3 year requisite service period following the grant date. In addition to the service condition, the number of nonvested shares to be received depends on the attainment of defined Company-wide performance goals based on operating ratio and return on invested capital over a three-year performance period for 2013 and 2012 Awards and annual performance periods for the 2011 Awards. The number of nonvested shares ultimately earned will range between zero to 200% of the target award.
	A summary of performance based nonvested stock activity at target is as follows:
		Target Number of Shares *			Weighted-Average Grant Date Fair Value
	Nonvested stock, at December 31, 2012	108,579			$	60.54
	Granted	71,471			82.34
	Vested	—			—
	Forfeited	(1,164	)		69.95
	Nonvested stock, at December 31, 2013	178,886			$	69.19
	_____________________
	* For the 2013 Awards and the 2012 Awards, participants in the aggregate can earn up to a maximum of 93,414 and 118,558 shares, respectively. For the 2011 Awards, the performance shares earned were 118,839.
	The weighted-average grant date fair value of performance based nonvested stock granted during 2013, 2012 and 2011 was $82.34, $62.81 and $52.66, respectively. The Company expenses the grant date fair value of the awards which are probable of being earned over the performance periods. Compensation cost on performance based awards was $5.1 million, $4.0 million and $1.2 million for the years ended December 31, 2013, 2012 and 2011, respectively. Total income tax benefit recognized in the consolidated statements of income for performance based awards was $1.9 million, $1.5 million and $0.4 million for the years ended December 31, 2013, 2012 and 2011, respectively.
	As of December 31, 2013, $3.5 million of unrecognized compensation cost related to performance based awards is expected to be recognized over a weighted-average period of 0.9 year.
	Employee Stock Purchase Plan. The employee stock purchase plan (“ESPP”) provides substantially all full-time employees of the Company, certain subsidiaries and certain other affiliated entities, with the right to subscribe to an aggregate of 4.0 million shares of common stock of the Company. Under the ESPP, eligible employees may contribute, through payroll deductions, up to 5% of their regular base compensation during six-month purchase periods. At the end of each purchase period, the accumulated deductions are applied toward the purchase of the Company’s common stock.
	Pursuant to the terms of the ESPP, the purchase price for shares is equal to 90% of the closing market price on either the exercise date or the offering date, whichever is lower. Both the discount in grant price and the share option purchase price are valued to derive the award’s fair value. The awards vest and the expense is recognized ratably over the offering period.
	The following table summarizes activity related to the various ESPP offerings:
	Exercise Date									Received
										from
	Date		Purchase				Shares			Employees(i)
	Issued		Price				Issued
										In millions
July 2013 offering	January 13, 2014		$	97.58			16,376			$	1.6
January 2013 offering	July 12, 2013		77.53				19,292			1.5
July 2012 offering	January 14, 2013		61.73				23,099			1.4
January 2012 offering	July 13, 2012		61.84				21,559			1.3
July 2011 offering	January 13, 2012		54.55				22,760			1.2
January 2011 offering	July 14, 2011		43.76				27,170			1.2
_____________________
(i)	Represents amounts received from employees through payroll deductions for share purchases under applicable offering.
The fair value of the ESPP stock purchase rights is estimated on the date of grant using the Black-Scholes option pricing model. The weighted-average assumptions used for each of the respective periods were as follows:
	Year Ended December 31,
	2013				2012				2011
Expected dividend yield	0.9		%		0.59		%		0		%
Expected volatility	18.3		%		28.97		%		22.72		%
Risk-free interest rate	0.13		%		0.14		%		0.18		%
Expected term (years)	0.5				0.5				0.5
Weighted-average grant date fair value	$	14.48			$	12.4			$	8.87
Compensation expense of $0.5 million, $0.5 million, and $0.4 million was recognized for ESPP option awards for the years ended December 31, 2013, 2012, and 2011, respectively. At December 31, 2013, there were 3.8 million remaining shares available for future ESPP offerings under the plan.

Postemployment_Benefits

Postemployment Benefits	12 Months Ended
	Dec. 31, 2013
Postemployment Benefits [Abstract]	'
Postemployment Benefits	'
	Postemployment Benefits
	Health and Welfare. Certain U.S. employees that have met age and service requirements are eligible for medical benefits and life insurance coverage during retirement. The retiree medical plan is contributory and provides benefits to retirees, their covered dependents and beneficiaries. The plan provides for annual adjustments to retiree contributions, and also contains, depending on the coverage selected, certain deductibles, co-payments, co-insurance, and coordination with Medicare. Certain management employees also maintain their status under a collective bargaining agreement, which permits them access to post-retirement medical under the multi-employer plan described below. The life insurance plan is non-contributory and covers union retirees only. The Company’s policy, in most cases, is to fund benefits payable under these plans as the obligations become due.
	Postemployment Benefits. Mexican law requires that the Company provide certain postemployment benefits to its Mexican union and non-union employees. These plans provide statutorily calculated benefits which are payable upon retirement, death, disability, voluntary or involuntary termination of employees based on length of service.
	The Company uses December 31 as the measurement date for its postemployment benefit obligations.
	Net Periodic Benefit Cost, Plan Obligations and Funded Status
	Components of the net cost (benefit) for these plans were as follows for the years ended December 31 (in millions):
		Health and Welfare											Postemployment Benefits
		2013				2012				2011			2013			2012		2011
	Service cost	$	0.1			$	0.1			$	0.1		$	0.9		$	0.9	$	0.9
	Interest cost	0.2				0.2				0.3			0.9			0.8		0.9
	Actuarial (gain) loss (i)	(0.9		)		0.1				1.6			(1.0		)	3.1		0.8
	Foreign currency (gain) loss	—				—				—			(0.1		)	0.6		(1.4		)
	Prior service credit (ii)	(0.2		)		(0.2		)		(0.2		)	—			—		—
	Net periodic cost (benefit) recognized	$	(0.8	)		$	0.2			$	1.8		$	0.7		$	5.4	$	1.2
	_____________________
	(i)	Net benefit costs above do not include a component for the amortization of actuarial gains or losses as the Company’s policy is to recognize such gains and losses immediately.
	(ii)	During 2005, the Company revised its medical plan to exclude prescription drug coverage available under Medicare part D. This negative plan amendment generated an unrecognized prior service benefit of $2.3 million which is being amortized over the estimated remaining life of the affected participants of 9.5 years.
	The following table reconciles the change in the benefit obligation, fair value of plan assets, funded status, and the accrued benefit cost as of and for each of the years ended December 31 (in millions):
		Health and Welfare								Postemployment Benefits
		2013				2012				2013			2012
	Benefit obligation at beginning of year	$	6.5			$	6.4			$	13.2		$	10
	Service cost	0.1				0.1				0.9			0.9
	Interest cost	0.2				0.2				0.9			0.8
	Actuarial (gain) loss	(0.9		)		0.1				(1.0		)	3.1
	Foreign currency (gain) loss	—				—				(0.1		)	0.6
	Benefits paid, net of retiree contributions	(0.4		)		(0.3		)		(1.1		)	(2.2		)
	Benefit obligation at end of year	$	5.5			$	6.5			$	12.8		$	13.2
	Funded status	$	(5.5	)		$	(6.5	)		$	(12.8	)	$	(13.2	)
	Assumptions
	The assumptions used to determine benefit obligations and costs are selected based on current and expected market conditions. Discount rates are selected based on the rates on low risk government bonds with cash flows approximating the timing of expected benefit payments. The Mexico bond market is utilized for the postemployment obligation and the U.S. bond market is utilized for the U.S. health and welfare obligation.
	Weighted average assumptions used to determine benefit obligations were as follows for the years ended December 31:
		Health and Welfare						Postemployment Benefits
		2013			2012			2013			2012
	Discount rate	4.5	%		3.5	%		8.25	%		6.75	%
	Rate of compensation increase	n/a			n/a			4.5	%		4.5	%
	Weighted average assumptions used to determine net benefit cost for the periods were as follows for the years ended December 31:
		Health and Welfare						Postemployment Benefits
		2013			2012			2013			2012
	Discount rate	3.5	%		4	%		6.75	%		8	%
	Rate of compensation increase	n/a			n/a			4.5	%		4.5	%
	The following table presents the assumed health care cost trends:
		2013			2012			2011
	Health care trend rate for next year	6.5	%		8	%		8.5	%
	Ultimate trend rate	5	%		5	%		5	%
	Year that rate reaches ultimate rate	2023			2029			2020
	Cash Flows
	The following table presents benefit payments expected to be paid, which reflect expected future service, as appropriate, for each of the next five years and the aggregate five years thereafter (in millions):
	Year	Health and				Postemployment
		Welfare				Benefits
	2014	$	0.6			$	0.7
	2015	0.5				0.8
	2016	0.5				0.9
	2017	0.4				0.9
	2018	0.4				1
	2019-2023	1.8				6.3
	Multi-Employer Plan. Under collective bargaining agreements, KCSR participates in a multi-employer benefit plan, which provides certain post-retirement health care and life insurance benefits to eligible union employees and certain retirees. Premiums under this plan are expensed as incurred and were $3.9 million, $4.3 million, and $4.6 million for the years ended December 31, 2013, 2012, and 2011, respectively.
	401(k) and Profit Sharing Plan. The Company sponsors the KCS 401(k) and Profit Sharing Plan (the “401(k) plan”), whereby participants can choose to make contributions in the form of salary deductions pursuant to Section 401(k) of the Internal Revenue Code. The Company matches 401(k) contributions up to a maximum of 5% of compensation. The Company recognized expense of $2.5 million, $2.3 million and $2.2 million for the years ended December 31, 2013, 2012 and 2011, related to the KCS 401(k) and Profit Sharing Plan. The 401(k) plan includes the Company’s common stock as an investment option. The common stock is acquired by the 401(k) plan trustee through open market transactions of previously registered shares.

Commitments_and_Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]	'
Commitments and Contingencies	'
	Commitments and Contingencies
	Concession Duty. Under the Concession, KCSM paid concession duty expense of 0.5% of gross revenues for the first 15 years of the Concession period and, on June 24, 2012, KCSM began paying 1.25% of gross revenues, which is effective for the remaining years of the Concession. For the year ended December 31, 2013, the concession duty expense, which is recorded within materials and other in operating expenses, was $14.3 million, compared to $9.4 million and $4.9 million for the same periods in 2012 and 2011, respectively.
	Litigation. The Company is a party to various legal proceedings and administrative actions, all of which, except as set forth below, are of an ordinary, routine nature and incidental to its operations. Included in these proceedings are various tort claims brought by current and former employees for job-related injuries and by third parties for injuries related to railroad operations. KCS aggressively defends these matters and has established liability provisions, which management believes are adequate to cover expected costs. Although it is not possible to predict the outcome of any legal proceeding, in the opinion of management, other than those proceedings described in detail below, such proceedings and actions should not, individually, or in the aggregate, have a material adverse effect on the Company’s consolidated financial statements.
	Environmental Liabilities. The Company’s U.S. operations are subject to extensive federal, state and local environmental laws and regulations. The major U.S. environmental laws to which the Company is subject include, among others, the Federal Comprehensive Environmental Response, Compensation and Liability Act (“CERCLA,” also known as the Superfund law), the Toxic Substances Control Act, the Federal Water Pollution Control Act, and the Hazardous Materials Transportation Act. CERCLA can impose joint and several liabilities for cleanup and investigation costs, without regard to fault or legality of the original conduct, on current and predecessor owners and operators of a site, as well as those who generate, or arrange for the disposal of, hazardous substances. The Company does not believe that compliance with the requirements imposed by the environmental legislation will impair its competitive capability or result in any material additional capital expenditures, operating or maintenance costs. The Company is, however, subject to environmental remediation costs as described in the following paragraphs.
	The Company’s Mexico operations are subject to Mexican federal and state laws and regulations relating to the protection of the environment through the establishment of standards for water discharge, water supply, emissions, noise pollution, hazardous substances and transportation and handling of hazardous and solid waste. The Mexican government may bring administrative and criminal proceedings, impose economic sanctions against companies that violate environmental laws, and temporarily or even permanently close non-complying facilities.
	The risk of incurring environmental liability is inherent in the railroad industry. As part of serving the petroleum and chemicals industry, the Company transports hazardous materials and has a professional team available to respond to and handle environmental issues that might occur in the transport of such materials.
	The Company performs ongoing reviews and evaluations of the various environmental programs and issues within the Company’s operations, and, as necessary, takes actions intended to limit the Company’s exposure to potential liability. Although these costs cannot be predicted with certainty, management believes that the ultimate outcome of identified matters will not have a material adverse effect on the Company’s consolidated financial statements.
	Personal Injury. The Company’s personal injury liability is based on semi-annual actuarial studies performed on an undiscounted basis by an independent third party actuarial firm and reviewed by management. This liability is based on personal injury claims filed and an estimate of claims incurred but not yet reported. Actual results may vary from estimates due to the number, type and severity of the injury, costs of medical treatments and uncertainties in litigation. Adjustments to the liability are reflected within operating expenses in the period in which changes to estimates are known. Personal injury claims in excess of self-insurance levels are insured up to certain coverage amounts, depending on the type of claim and year of occurrence. The personal injury liability as of December 31, 2013 is based on an updated actuarial study of personal injury claims through November 30, 2013 and review of December 2013 experience. For the years ended December 31, 2013 and 2012, respectively, the Company recorded a $1.3 million increase and a $8.4 million reduction in personal injury liability, due to changes in estimates as a result of the Company’s claims development and settlement experience.
	The personal injury liability activity was as follows (in millions):
		2013			2012
	Balance at beginning of year	$	34.4		$	40.1
	Accruals	8.8			10
	Change in estimate	1.3			(8.4		)
	Payments	(13.3		)	(7.3		)
	Balance at end of year	$	31.2		$	34.4
	Certain Disputes with Ferromex. KCSM and Ferrocarril Mexicano, S.A. de C.V. (“Ferromex”) use certain trackage rights, haulage rights and interline services (the “Services”) provided by each other. The rates to be charged after January 1, 2009, were agreed to pursuant to the Trackage Rights Agreement, dated February 9, 2010 (the “Trackage Rights Agreement”), between KCSM and Ferromex. The rates payable for these Services for the period beginning in 1998 through December 31, 2008 are still not resolved. KCSM is currently involved in discussions with Ferromex regarding the amounts payable to each other for the Services for this period. If KCSM cannot reach an agreement with Ferromex for rates applicable for Services which were provided prior to January 1, 2009, which are not subject to the Trackage Rights Agreement, the Mexican Secretaría de Comunicaciones y Transportes (“Secretary of Communications and Transportation” or “SCT”) is entitled to set the rates in accordance with Mexican law and regulations. KCSM and Ferromex both initiated administrative proceedings seeking a determination by the SCT of the rates that KCSM and Ferromex should pay each other in connection with the Services. The SCT issued rulings in 2002 and 2008 setting the rates for the Services and both KCSM and Ferromex challenged these rulings. Although KCSM and Ferromex have challenged these matters based on different grounds and these cases continue to evolve, management believes the amounts recorded related to these matters are adequate. While the outcome of these matters cannot be predicted with certainty, the Company does not believe that, when resolved, these disputes will have a material effect on its consolidated financial statements.
	Tax Contingencies. Information regarding tax contingencies is included in Note 9 Income Taxes - Tax Contingencies.
	Contractual Agreements. In the normal course of business, the Company enters into various contractual agreements related to commercial arrangements and the use of other railroads’ or governmental entities’ infrastructure needed for the operations of the business. The Company is involved or may become involved in certain disputes involving transportation rates, product loss or damage, charges, and interpretations related to these agreements. While the outcome of these matters cannot be predicted with certainty, the Company does not believe that, when resolved, these disputes will have a material effect on its consolidated financial statements.
	Credit Risk. The Company continually monitors risks related to economic changes and certain customer receivables concentrations. Significant changes in customer concentration or payment terms, deterioration of customer creditworthiness or further weakening in economic trends could have a significant impact on the collectability of the Company’s receivables and its operating results. If the financial condition of the Company’s customers were to deteriorate and result in an impairment of their ability to make payments, additional allowances may be required. The Company has recorded provisions for uncollectability based on its best estimate at December 31, 2013.
	Panama Canal Railway Company (”PCRC”) Guarantees and Indemnities. At December 31, 2013, the Company had issued and outstanding $5.3 million under a standby letter of credit to fulfill its obligation to fund fifty percent of the debt service reserve or liquidity reserve established by PCRC in connection with the issuance of the 7.0% Senior Secured Notes due November 1, 2026 (the “PCRC Notes”). Additionally, KCS has pledged its shares of PCRC as security for the PCRC Notes.

Elimination_of_Deferred_Statut

Elimination of Deferred Statutory Profit Sharing Liability, Net	12 Months Ended
	Dec. 31, 2013
Restructuring and Related Activities [Abstract]	'
Elimination of Deferred Statutory Profit Sharing Liability, Net	'
	Elimination of Deferred Statutory Profit Sharing Liability, Net
	During the second quarter of 2012, the Company completed an organizational restructuring whereby employees of KCSM became employees of KCSM Servicios, S.A. de C.V. (“KCSM Servicios”), a wholly-owned subsidiary of the Company. KCSM Servicios provides employee services to KCSM, and KCSM pays KCSM Servicios market-based rates for these services. The effective date of this organizational restructuring was May 1, 2012.
	Mexican employees are entitled to receive Mexican statutory profit sharing. The related cash payment to employees is based on an employer’s net profit determined under accounting principles prescribed in Mexican law, rather than its net profit determined under U.S. GAAP. U.S. GAAP requires the recording of deferred liabilities or assets for financial reporting purposes on the differences between the amounts determined under the two different accounting principles.
	As a result of the organizational restructuring, KCSM’s obligation to pay Mexican statutory profit sharing terminated on the effective date. Accordingly, in the second quarter of 2012, KCSM recognized a $43.0 million net reduction to operating expense. This reduction includes the elimination of $47.8 million of the deferred Mexican statutory profit sharing liability, net of $4.8 million of transaction costs. KCSM Servicios became obligated to pay Mexican statutory profit sharing to its employees beginning on the effective date of the organizational restructuring.

Insurance_Recoveries

Insurance Recoveries	12 Months Ended
	Dec. 31, 2013
Extraordinary and Unusual Items [Abstract]	'
Insurance Recoveries	'
	Insurance Recoveries
	In the third quarter of 2011, the Company settled its insurance claim related to hurricane Alex, which struck in 2010 and resulted in extensive damage to KCSM’s track and bridge infrastructures, caused multiple track-related incidents and significantly disrupted the Company’s rail service. As a result of this settlement, the Company recognized a gain on insurance recoveries of $25.6 million in the third quarter of 2011. This gain primarily represented the recovery of lost profits and the replacement value of property in excess of its carrying value, net of the self-insured retentions.

Quarterly_Financial_Data_Unaud

Quarterly Financial Data (Unaudited)	12 Months Ended
	Dec. 31, 2013
Quarterly Financial Data [Abstract]	'
Quarterly Financial Data (Unaudited)	'
	Quarterly Financial Data (Unaudited)
		Fourth		Third		Second			First
		(In millions, except per share amounts)
	2013
	Revenues	$	615.6	$	621.6	$	579.3		$	552.8
	Operating income	196.1		200.3		179.3			162.9
	Net income	114.4		119		15.7		(i)	104.2
	Net income attributable to Kansas City Southern and subsidiaries	113.8		118.4		15.4		(i)	103.8
	Per share data:
	Basic earnings per common share	$	1.03	$	1.08	$	0.14		$	0.94
	Diluted earnings per common share	1.03		1.07		0.14			0.94
	2012
	Revenues	$	568.4	$	577.4	$	545.3		$	547.5
	Operating income	173.6		180.7		203.8		(ii)	157.8
	Net income	92.5		90.7		120.9			75.3
	Net income attributable to Kansas City Southern and subsidiaries	91.8		90.1		120.4			75
	Per share data:
	Basic earnings per common share	$	0.84	$	0.82	$	1.1		$	0.68
	Diluted earnings per common share	0.83		0.82		1.09			0.68
	_____________________
	(i)	During the second quarter of 2013, the Company recognized pre-tax $111.4 million of debt retirement costs related to debt restructuring activities that occurred during the period.
	(ii)	During the second quarter of 2012, the Company recognized a pre-tax gain of $43.0 million within operating expenses for the elimination of deferred statutory profit sharing liability, net as a result of the organizational restructuring during the period.

Condensed_Consolidating_Financ

Condensed Consolidating Financial Information	12 Months Ended
	Dec. 31, 2013
Condensed Consolidating Financial Information [Abstract]	'
Condensed Consolidating Financial Information	'
	Condensed Consolidating Financial Information
	As discussed in Note 8, at December 31, 2013, KCSR had outstanding $450.0 million principal amount of 4.30% Senior Notes due May 15, 2043 and $200.0 million principal amount of 3.85% Senior Notes due November 15, 2023, which are unsecured obligations of KCSR, and are also jointly and severally and fully and unconditionally guaranteed on an unsecured senior basis by KCS and certain wholly-owned domestic subsidiaries. The Company intends to file a registration statement on Form S-4 with the Securities and Exchange Commission (“SEC”) for the 4.30% Senior Notes and 3.85% Senior Notes, and as a result, is providing the accompanying condensed consolidating financial information (in millions) pursuant to SEC Regulation S-X Rule 3-10 “Financial statements of guarantors and issuers of guaranteed securities registered or being registered.”
	Condensed Consolidating Statements of Comprehensive Income
		2013
		Parent			KCSR			Guarantor			Non-Guarantor			Consolidating			Consolidated
								Subsidiaries			Subsidiaries			Adjustments			KCS
	Revenues	$	—		$	1,115.00		$	42.6		$	1,251.90		$	(40.2	)	$	2,369.30
	Operating expenses	4.8			829.6			39			800.1			(42.8		)	1,630.70
	Operating income (loss)	(4.8		)	285.4			3.6			451.8			2.6			738.6
	Equity in net earnings of unconsolidated affiliates	318.3			1.1			6.3			15.7			(322.6		)	18.8
	Interest expense	(0.1		)	(68.5		)	0.1			(59.3		)	47.2			(80.6		)
	Debt retirement costs	—			(1.5		)	—			(117.7		)	—			(119.2		)
	Foreign exchange loss	—			(1.3		)	—			(3.9		)	—			(5.2		)
	Other income (expense), net	44.6			5.1			(0.1		)	(0.6		)	(49.8		)	(0.8		)
	Income before income taxes	358			220.3			9.9			286			(322.6		)	551.6
	Income tax expense	17.6			81.2			2.9			96.6			—			198.3
	Net income	340.4			139.1			7			189.4			(322.6		)	353.3
	Less: Net income attributable to noncontrolling interest	—			—			1.9			—			—			1.9
	Net income attributable to Kansas City Southern and subsidiaries	340.4			139.1			5.1			189.4			(322.6		)	351.4
	Other comprehensive income (loss)	0.4			0.5			—			(0.1		)	(0.4		)	0.4
	Comprehensive income attributable to Kansas City Southern and subsidiaries	$	340.8		$	139.6		$	5.1		$	189.3		$	(323.0	)	$	351.8
	Condensed Consolidating Statements of Comprehensive Income—(Continued)
		2012
		Parent			KCSR			Guarantor			Non-Guarantor			Consolidating			Consolidated
								Subsidiaries			Subsidiaries			Adjustments			KCS
	Revenues	$	—		$	1,079.70		$	29.9		$	1,164.70		$	(35.7	)	$	2,238.60
	Operating expenses	4.2			805			34			717.7			(38.2		)	1,522.70
	Operating income (loss)	(4.2		)	274.7			(4.1		)	447			2.5			715.9
	Equity in net earnings of unconsolidated affiliates	218.9			2.6			6.6			15.5			(224.3		)	19.3
	Interest expense	(0.1		)	(65.0		)	—			(88.2		)	52.9			(100.4		)
	Debt retirement costs	—			(19.6		)	—			(0.5		)	—			(20.1		)
	Foreign exchange gain	—			—			—			2.7			—			2.7
	Other income (expense), net	46.5			11.7			—			(128.5		)	69.3			(1.0		)
	Income before income taxes	261.1			204.4			2.5			248			(99.6		)	616.4
	Income tax expense (benefit)	8.4			74.4			(0.2		)	154.4			—			237
	Net income	252.7			130			2.7			93.6			(99.6		)	379.4
	Less: Net income attributable to noncontrolling interest	—			—			2.1			—			—			2.1
	Net income attributable to Kansas City Southern and subsidiaries	252.7			130			0.6			93.6			(99.6		)	377.3
	Other comprehensive income (loss)	(0.2		)	(0.6		)	—			0.9			(0.3		)	(0.2		)
	Comprehensive income attributable to Kansas City Southern and subsidiaries	$	252.5		$	129.4		$	0.6		$	94.5		$	(99.9	)	$	377.1
	Condensed Consolidating Statements of Comprehensive Income—(Continued)
		2011
		Parent			KCSR			Guarantor			Non-Guarantor			Consolidating			Consolidated
								Subsidiaries			Subsidiaries			Adjustments			KCS
	Revenues	$	—		$	1,030.60		$	24		$	1,074.70		$	(31.0	)	$	2,098.30
	Operating expenses	4			765.5			27.5			723.2			(33.5		)	1,486.70
	Operating income (loss)	(4.0		)	265.1			(3.5		)	351.5			2.5			611.6
	Equity in net earnings of unconsolidated affiliates	309.2			2.6			5.7			14.9			(314.2		)	18.2
	Interest expense	(0.1		)	(88.8		)	—			(80.7		)	40.5			(129.1		)
	Debt retirement costs	—			(28.4		)	—			(10.3		)	—			(38.7		)
	Foreign exchange loss	—			—			—			(9.2		)	—			(9.2		)
	Other income, net	39.7			5.4			0.1			—			(43.0		)	2.2
	Income before income taxes	344.8			155.9			2.3			266.2			(314.2		)	455
	Income tax expense (benefit)	14.5			55.5			(0.7		)	53.8			—			123.1
	Net income	330.3			100.4			3			212.4			(314.2		)	331.9
	Less: Net income attributable to noncontrolling interest	—			—			1.6			—			—			1.6
	Net income attributable to Kansas City Southern and subsidiaries	330.3			100.4			1.4			212.4			(314.2		)	330.3
	Other comprehensive income (loss)	(0.8		)	0.2			—			(1.3		)	1.1			(0.8		)
	Comprehensive income attributable to Kansas City Southern and subsidiaries	$	329.5		$	100.6		$	1.4		$	211.1		$	(313.1	)	$	329.5
	Condensed Consolidating Balance Sheets
		December 31, 2013
		Parent			KCSR			Guarantor			Non-Guarantor			Consolidating			Consolidated
								Subsidiaries			Subsidiaries			Adjustments			KCS
Assets:
Current assets	$	2.6		$	403		$	8.8		$	560.1		$	(32.1	)	$	942.4
Investments	—			9.6			—			31.5			—			41.1
Investments in consolidated subsidiaries	2,154.60			(2.1		)	461.8			—			(2,614.3		)	—
Restricted funds	—			—			—			4.2			—			4.2
Property and equipment (including concession assets), net	0.1			2,780.40			198.6			3,377.20			—			6,356.30
Other assets	1.5			50.9			—			39			—			91.4
Total assets	$	2,158.80		$	3,241.80		$	669.2		$	4,012.00		$	(2,646.4	)	$	7,435.40
Liabilities and equity:
Current liabilities	$	(1,216.5	)	$	1,580.60		$	130.7		$	267.9		$	(32.1	)	$	730.6
Long-term debt	0.2			704.3			0.2			1,152.20			—			1,856.90
Deferred income taxes	(11.7		)	719.8			127.6			208.9			—			1,044.60
Other liabilities	6.6			92			0.7			27.5			(0.1		)	126.7
Stockholders’ equity	3,380.20			145.1			104			2,355.50			(2,614.2		)	3,370.60
Noncontrolling interest	—			—			306			—			—			306
Total liabilities and equity	$	2,158.80		$	3,241.80		$	669.2		$	4,012.00		$	(2,646.4	)	$	7,435.40
Condensed Consolidating Balance Sheets—(Continued)
	December 31, 2012
	Parent			KCSR			Guarantor			Non-Guarantor			Consolidating			Consolidated
							Subsidiaries			Subsidiaries			Adjustments			KCS
Assets:
Current assets	$	2.4		$	236.4		$	5.4		$	318.6		$	(40.5	)	$	522.3
Investments	—			23.9			—			27.6			—			51.5
Investments in consolidated subsidiaries	2,242.00			(0.2		)	454.8			—			(2,696.6		)	—
Restricted funds	—			—			—			14.2			—			14.2
Property and equipment (including concession assets), net	—			2,275.00			204.3			3,205.50			—			5,684.80
Other assets	1.3			190.6			—			67.7			(136.5		)	123.1
Total assets	$	2,245.70		$	2,725.70		$	664.5		$	3,633.60		$	(2,873.6	)	$	6,395.90
Liabilities and equity:
Current liabilities	$	(881.1	)	$	1,058.90		$	131.4		$	156.1		$	(40.5	)	$	424.8
Long-term debt	0.2			569.6			0.3			1,090.30			(112.8		)	1,547.60
Deferred income taxes	2.7			575.5			130			186			—			894.2
Other liabilities	6.7			116.4			0.4			28.8			(23.7		)	128.6
Stockholders’ equity	3,117.20			405.3			98.3			2,172.40			(2,696.6		)	3,096.60
Noncontrolling interest	—			—			304.1			—			—			304.1
Total liabilities and equity	$	2,245.70		$	2,725.70		$	664.5		$	3,633.60		$	(2,873.6	)	$	6,395.90
Condensed Consolidating Statements of Cash Flows
	2013
	Parent			KCSR			Guarantor			Non-Guarantor			Consolidating			Consolidated
							Subsidiaries			Subsidiaries			Adjustments			KCS
Operating activities:
Net cash provided	$	70.7		$	272.2		$	2.6		$	463.8		$	(11.0	)	$	798.3
Investing activities:
Capital expenditures	—			(417.4		)	(2.0		)	(175.8		)	0.4			(594.8		)
Purchase or replacement of equipment under operating leases	—			(130.9		)	—			(80.9		)	—			(211.8		)
Property investments in MSLLC	—			—			—			(31.6		)	—			(31.6		)
Proceeds from repayment of loans to affiliates	—			181.4			—			—			(181.4		)	—
Loans to affiliates	—			(69.5		)	—			—			69.5			—
Other investing activities	(4.9		)	(5.1		)	(1.1		)	10.8			5.2			4.9
Net cash used	(4.9		)	(441.5		)	(3.1		)	(277.5		)	(106.3		)	(833.3		)
Financing activities:
Proceeds from issuance of long-term debt	—			687.6			—			1,230.80			—			1,918.40
Repayment of long-term debt	—			(344.3		)	(0.1		)	(998.8		)	—			(1,343.2		)
Debt costs	—			(7.5		)	—			(110.3		)	—			(117.8		)
Dividends paid	(71.2		)	—			—			(11.0		)	11			(71.2		)
Proceeds from loans from affiliates	—			—			—			69.5			(69.5		)	—
Repayment of loans from affiliates	—			—			—			(181.4		)	181.4			—
Other financing activities	5.7			—			0.7			4.9			(5.6		)	5.7
Net cash provided (used)	(65.5		)	335.8			0.6			3.7			117.3			391.9
Cash and cash equivalents:
Net increase	0.3			166.5			0.1			190			—			356.9
At beginning of year	0.1			29.6			0.1			42.8			—			72.6
At end of year	$	0.4		$	196.1		$	0.2		$	232.8		$	—		$	429.5
Condensed Consolidating Statements of Cash Flows—(Continued)
	2012
	Parent			KCSR			Guarantor			Non-Guarantor			Consolidating			Consolidated
							Subsidiaries			Subsidiaries			Adjustments			KCS
Operating activities:
Net cash provided	$	53.3		$	236.4		$	2.3		$	389.2		$	(8.0	)	$	673.2
Investing activities:
Capital expenditures	—			(281.2		)	(2.1		)	(233.8		)	—			(517.1		)
Purchase or replacement of equipment under operating leases	—			(19.7		)	—			(3.2		)	—			(22.9		)
Property investments in MSLLC	—			—			—			(35.2		)	—			(35.2		)
Proceeds from repayment of loans to affiliates	—			87.2			—			—			(87.2		)	—
Other investing activities	(0.5		)	5.8			(0.5		)	17.5			1			23.3
Net cash used	(0.5		)	(207.9		)	(2.6		)	(254.7		)	(86.2		)	(551.9		)
Financing activities:
Proceeds from issuance of long-term debt	—			329.6			—			—			—			329.6
Repayment of long-term debt	—			(356.2		)	(0.1		)	(19.6		)	—			(375.9		)
Debt costs	—			(21.3		)	—			(0.8		)	—			(22.1		)
Dividends paid	(86.1		)	—			—			(8.0		)	8			(86.1		)
Repayment of loans from affiliates	—			—			—			(87.2		)	87.2			—
Other financing activities	33.4			—			0.5			0.5			(1.0		)	33.4
Net cash provided (used)	(52.7		)	(47.9		)	0.4			(115.1		)	94.2			(121.1		)
Cash and cash equivalents:
Net increase (decrease)	0.1			(19.4		)	0.1			19.4			—			0.2
At beginning of year	—			49			—			23.4			—			72.4
At end of year	$	0.1		$	29.6		$	0.1		$	42.8		$	—		$	72.6
Condensed Consolidating Statements of Cash Flows—(Continued)
	2011
	Parent			KCSR			Guarantor			Non-Guarantor			Consolidating			Consolidated
							Subsidiaries			Subsidiaries			Adjustments			KCS
Operating activities:
Net cash provided (used)	$	(77.8	)	$	420		$	7.6		$	288.3		$	(0.1	)	$	638
Investing activities:
Capital expenditures	—			(295.7		)	(7.6		)	(178.9		)	—			(482.2		)
Purchase or replacement of equipment under operating leases	—			—			—			(12.8		)	—			(12.8		)
Return of investment	84.4			—			—			—			(84.4		)	—
Property investments in MSLLC	—			—			—			(33.3		)	—			(33.3		)
Other investing activities	(6.0		)	(5.0		)	(6.0		)	22.8			12.1			17.9
Net cash provided (used)	78.4			(300.7		)	(13.6		)	(202.2		)	(72.3		)	(510.4		)
Financing activities:
Proceeds from issuance of long-term debt	—			350			—			200			—			550
Repayment of long-term debt	—			(437.1		)	—			(216.2		)	—			(653.3		)
Debt costs	—			(21.0		)	—			(15.6		)	—			(36.6		)
Dividends paid	(3.0		)	—			—			—			—			(3.0		)
Distribution to affiliate	—			—			—			(84.4		)	84.4			—
Other financing activities	2.3			—			6			6			(12.0		)	2.3
Net cash provided (used)	(0.7		)	(108.1		)	6			(110.2		)	72.4			(140.6		)
Cash and cash equivalents:
Net increase (decrease)	(0.1		)	11.2			—			(24.1		)	—			(13.0		)
At beginning of year	0.1			37.8			—			47.5			—			85.4
At end of year	$	—		$	49		$	—		$	23.4		$	—		$	72.4

Geographic_Information

Geographic Information	12 Months Ended
	Dec. 31, 2013
Segment Reporting [Abstract]	'
Geographic Information	'
	Geographic Information
	The Company strategically manages its rail operations as one reportable business segment over a single coordinated rail network that extends from the midwest and southeast portions of the United States south into Mexico and connects with other Class I railroads. Financial information reported at this level, such as revenues, operating income and cash flows from operations, is used by corporate management, including the Company’s chief operating decision-maker, in evaluating overall financial and operational performance, market strategies, as well as the decisions to allocate capital resources.
	The Company’s strategic initiatives, which drive its operational direction, are developed and managed at the Company’s headquarters and targets are communicated to its various activity centers. The activity centers are responsible for executing the overall corporate strategy and operating plan established by corporate management as a coordinated system. The role of each region is to manage the operational activities and monitor and control costs over the coordinated rail network.
	The following tables provide information by geographic area (in millions):
		Years ended December 31,
		2013		2012		2011
	Revenues
	U.S.	$	1,268.00	$	1,216.70	$	1,159.90
	Mexico	1,101.30		1,021.90		938.4
	Total revenues	$	2,369.30	$	2,238.60	$	2,098.30
		Years ended
		December 31,
		2013		2012
	Property and equipment (including concession assets), net
	U.S.	$	3,662.20	$	3,126.20
	Mexico	2,694.10		2,558.60
	Total property and equipment (including concession assets), net	$	6,356.30	$	5,684.80

Subsequent_Events

Subsequent Events	12 Months Ended
	Dec. 31, 2013
Subsequent Events [Abstract]	'
Subsequent Events	'
	Subsequent Events
	Credit Agreement Amendments and Commercial Paper Programs
	KCSR Credit Agreement Amendment and Commercial Paper Program. On January 30, 2014, the Company and KCSR entered into agreements to establish a $450.0 million commercial paper program for KCSR (the “KCSR Commercial Paper Program”). Also on January 30, 2014, the Company, KCSR and certain other subsidiaries of the Company that guaranty the 2012 KCSR Credit Agreement entered into an amendment to the 2012 KCSR Credit Agreement which eliminated certain representations as a condition to borrowing under the Revolving Facility, provided for the prepayment of all outstanding term loans under the 2012 KCSR Credit Agreement on or before February 13, 2014, and increased the borrowing capacity under the Revolving Facility to $450.0 million. The Revolving Facility serves as a backstop for the KCSR Commercial Paper Program, which is expected to serve as KCSR’s primary means of short-term funding in the future. As of January 31, 2014, KCSR has no outstanding amount issued under the KCSR Commercial Paper Program.
	KCSM Credit Agreement Amendment and Commercial Paper Program. On January 30, 2014, KCSM entered into agreements to establish a $200.0 million commercial paper program for KCSM (the “KCSM Commercial Paper Program”). Also on January 30, 2014, KCSM and certain subsidiaries of KCSM that guaranty the 2012 KCSM Credit Agreement entered into an amendment to the 2012 KCSM Credit Agreement which eliminated certain representations as a condition to borrowing under the KCSM Revolving Facility and provided for same-day availability of borrowed funds if desired by KCSM. The KCSM Revolving Facility serves as a backstop for the KCSM Commercial Paper Program, which is expected to serve as KCSM’s primary means of short-term funding in the future. As of January 31, 2014, KCSM has no outstanding amount issued under the KCSM Commercial Paper Program.
	Redemption of KCSM 8.0% Senior Notes
	On January 29, 2014, the Company announced that KCSM will redeem the remaining $62.8 million aggregate principal amount of the KCSM 8.0% Senior Notes on February 3, 2014, at a redemption price (expressed as a percentage of the principal amount) of 104.0%. KCSM expects to fund the redemption with a portion of the remaining proceeds from the Floating Rate Senior Notes issued in the fourth quarter of 2013.
	Lease Conversion Program
	During the fourth quarter of 2013, the Company initiated a multi-year lease conversion program (the “Lease Conversion Program”) to optimize the Company’s capital structure and take advantage of a favorable interest rate environment. As part of the Lease Conversion Program, beginning late in the fourth quarter of 2013, the Company will purchase certain equipment under existing operating leases and will purchase replacement equipment as certain operating leases expire. This initiative will be funded with a portion of the proceeds from the senior notes issued during the fourth quarter of 2013 and available cash.
	As of the date of this filing, the Company has entered into binding agreements with lessors to purchase approximately $69.0 million of equipment under existing operating leases and will recognize approximately $21.0 million of related lease termination costs (included in operating expenses) in 2014.
	Foreign Currency Hedging
	During January 2014, the Company entered into foreign currency forward contracts with an aggregate notional amount of $345.0 million to hedge its exposure to fluctuations in the Mexican cash tax obligation due to changes in the value of the Mexican peso against the U.S. dollar. These contracts mature on December 31, 2014, and obligate the Company to purchase a total of Ps.4,642.5 million at a weighted average exchange rate of Ps.13.46 to each U.S. dollar. The Company has not designated these foreign currency forward contracts as hedging instruments for accounting purposes. The Company will measure the foreign currency forward contracts at fair value each period and will recognize any change in fair value in foreign exchange gain (loss) within the consolidated statements of income.
	Common Stock Dividend
	On January 27, 2014, the Company’s Board of Directors declared a cash dividend of $0.280 per share payable on April 2, 2014, to common stockholders of record as of March 10, 2014. The aggregate amount of the dividend declared was approximately $30.9 million.

Significant_Accounting_Policie1

Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2013
Accounting Policies [Abstract]	'
Principles of Consolidation Policy	'
	Principles of Consolidation. The accompanying consolidated financial statements are presented using the accrual basis of accounting and include the Company and its majority-owned subsidiaries. All significant intercompany accounts and transactions have been eliminated. Certain prior year amounts have been reclassified to conform to the current year presentation.
	The equity method of accounting is used for all entities in which the Company or its subsidiaries have significant influence, but not a controlling interest. The Company evaluates less-than-majority-owned investments for consolidation pursuant to consolidation and variable interest entity guidance. The Company does not have any less-than-majority-owned investments requiring consolidation.
Use of Estimates Policy	'
	Use of Estimates. The accounting and financial reporting policies of the Company conform to accounting principles generally accepted in the United States (“U.S. GAAP”). The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenues and expenses during the reporting period. Significant items subject to such estimates and assumptions include those related to the recoverability and useful lives of assets, personal injury claims, litigation provisions and income taxes. Changes in facts and circumstances may result in revised estimates and actual results could differ from those estimates.
Revenue Recognition Policy	'
	Revenue Recognition. The Company recognizes freight revenue based upon the percentage of completion of a commodity movement as a shipment moves from origin to destination, with the related expense recognized as incurred. Other revenues, in general, are recognized when the product is shipped, as services are performed or contractual obligations are fulfilled.
Foreign Exchange Gain (Loss) Policy	'
	Foreign Exchange Gain (Loss). For financial reporting purposes, foreign subsidiaries maintain records in U.S. dollars, which is the functional currency. The dollar is the currency that reflects the economic substance of the underlying events and circumstances relevant to the entity. Monetary assets and liabilities denominated in pesos are remeasured into dollars using current exchange rates. The difference between the exchange rate on the date of the transaction and the exchange rate on the settlement date, or balance sheet date if not settled, is included in the income statement as foreign exchange gain or loss.
Cash Equivalents Policy	'
	Cash Equivalents. Short-term liquid investments with an initial maturity of three months or less are classified as cash and cash equivalents.
Accounts Receivable, net Policy	'
	Accounts Receivable, net. Accounts receivable are net of an allowance for uncollectible accounts as determined by historical experience and adjusted for economic uncertainties or known trends. Accounts are charged to the allowance when a customer enters bankruptcy, when an account has been transferred to a collection agent or submitted for legal action, or when a customer is significantly past due and all available means of collection have been exhausted.
Materials and Supplies Policy	'
	Materials and Supplies. Materials and supplies consisting of diesel fuel, items to be used in the maintenance of rolling stock and items to be used in the maintenance or construction of road property are valued at average cost.
Derivative Instruments Policy	'
	Derivative Instruments. Derivatives are measured at fair value and recorded on the balance sheet as either assets or liabilities. Changes in the fair value of derivatives are recorded either through current earnings or as other comprehensive income, depending on hedge designation. Gains and losses on derivative instruments classified as cash flow hedges are reported in other comprehensive income and are reclassified into earnings in the periods in which earnings are impacted by the variability of the cash flow of the hedged item. The ineffective portion of all hedge transactions is recognized in current period earnings.
Restricted Funds Policy	'
	Restricted Funds. Restricted funds represents cash held by MSLLC which is restricted for use by KCS. These funds are restricted until they are used by MSLLC for specified property additions on the Meridian Speedway.
Property and Equipment (including Concession Assets) Policy	'
	Property and Equipment (including Concession Assets). KCS capitalizes costs for self-constructed additions and improvements to property including direct labor and material, indirect overhead costs, and interest during long-term construction projects. Direct costs are charged to capital projects based on the work performed and the material used. Indirect overhead costs are allocated to capital projects as a standard percentage, which is evaluated annually, and applied to direct labor and material costs. Asset removal activities are performed in conjunction with replacement activities; therefore, removal costs are estimated based on a standard percentage of direct labor and indirect overhead costs related to capital replacement projects. For purchased assets, all costs necessary to make the asset ready for its intended use are capitalized. Expenditures that significantly increase asset values, productive capacity, efficiency, safety or extend useful lives are capitalized. Repair and maintenance costs are expensed as incurred.
	Property and equipment are carried at cost and are depreciated primarily on the group method of depreciation, which the Company believes closely approximates a straight line basis over the estimated useful lives of the assets measured in years. Technology assets and leasehold improvements are depreciated using the straight line method over the lesser of the estimated useful lives of the assets or the lease term. Costs incurred by the Company to acquire the concession rights and related assets, as well as subsequent improvements to the concession assets, are capitalized and amortized using the group method of depreciation over the lesser of the current expected Concession term, including probable renewal of an additional 50-year term, or the estimated useful lives of the assets and rights.
	The group method of depreciation applies a composite rate to classes of similar assets rather than to individual assets. Composite depreciation rates are based upon the Company’s estimates of the expected average useful lives of assets as well as expected net salvage value at the end of their useful lives. In developing these estimates, the Company utilizes periodic depreciation studies performed by an independent engineering firm. Depreciation rate studies are performed at least every three years for equipment and at least every six years for road property (rail, ties, ballast, etc.). The depreciation studies take into account factors such as:
	•	Statistical analysis of historical patterns of use and retirements of each asset class;
	•	Evaluation of any expected changes in current operations and the outlook for the continued use of the assets;
	•	Evaluation of technological advances and changes to maintenance practices; and
	•	Historical and expected salvage to be received upon retirement.
	The depreciation studies may also indicate that the recorded amount of accumulated depreciation is deficient or in excess of the amount indicated by the study. Any such deficiency or excess is amortized as a component of depreciation expense over the remaining useful lives of the affected asset class, as determined by the study. The Company also monitors these factors in non-study years to determine if adjustments should be made to depreciation rates. Any changes in depreciation rates are implemented prospectively. The Company completed a depreciation study on its U.S. based assets during 2012 and the depreciation impacts of the study results were immaterial to 2012 consolidated financial results.
	During the year ended December 31, 2011, KCS engaged an independent engineering firm to assist management in performing a depreciation study on KCSM’s road property and equipment. The depreciation impacts of the study results were immaterial to 2011 consolidated financial results.
	Also under the group method of depreciation, the cost of railroad property and equipment (net of salvage or sales proceeds) retired or replaced in the normal course of business is charged to accumulated depreciation with no gain or loss recognized. Actual historical costs are retired when available, such as with equipment costs. The use of estimates in recording the retirement of roadway assets is necessary as it is impractical to track individual, homogeneous network-type assets. Certain types of roadway assets are retired using statistical curves derived from the depreciation studies that indicate the relative distribution of the age of the assets retired. For other roadway assets, historical costs are estimated by (1) deflating current costs using inflation indices published by the U.S. Bureau of Labor Statistics and (2) the estimated useful life of the assets as determined by the depreciation studies. The indices applied to the replacement value are selected because they closely correlate with the major costs of the items comprising the roadway assets. Because of the number of estimates inherent in the depreciation and retirement processes and because it is impossible to precisely estimate each of these variables until a group of assets is completely retired, the Company continually monitors the estimated useful lives of its assets and the accumulated depreciation associated with each asset group to ensure the depreciation rates are appropriate. Gains or losses on dispositions of land or non-group property and abnormal retirements of railroad property are recognized through income. A retirement of railroad property would be considered abnormal if the cause of the retirement is unusual in nature and its actual life is significantly shorter than what would be expected for that group based on the depreciation studies. An abnormal retirement could cause the Company to re-evaluate the estimated useful life of the impacted asset class.
	Long-lived assets are reviewed for impairment when events or circumstances indicate that the carrying amount of an asset may not be recoverable. If impairment indicators are present and the estimated future undiscounted cash flows are less than the carrying value of the long-lived assets, the carrying value would be reduced to the estimated fair value. Future cash flow estimates for an impairment review would be based on the lowest level of identifiable cash flows, which are the Company’s U.S. and Mexican operations.
Goodwill Policy	'
	Goodwill. Goodwill represents the excess of the purchase price over the fair value of the net identifiable assets acquired in business combinations. As of December 31, 2013 and 2012, the goodwill balance was $13.2 million, which is included in other assets in the consolidated balance sheets. Goodwill is not amortized, but is reviewed at least annually, or more frequently as indicators warrant, for impairment. An impairment loss would be recognized to the extent that the carrying amount exceeds the assets’ fair values.
Fair Value of Financial Instruments Policy	'
	Fair Value of Financial Instruments. Non-financial assets and liabilities are recognized at fair value on a nonrecurring basis. These assets and liabilities are measured at fair value on an ongoing basis but are subject to fair value only in certain circumstances. Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. The Company determines the fair values of its financial instruments based on the fair value hierarchy which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The hierarchy is broken down into three levels based upon the observability of inputs. Fair values determined by Level 1 inputs utilize quoted prices (unadjusted) in active markets for identical assets or liabilities that the Company has the ability to access. Level 2 inputs include quoted prices for similar assets and liabilities in active markets, and inputs other than quoted prices that are observable for the asset or liability. Level 3 inputs are unobservable inputs for the asset or liability, and include situations where there is little, if any, market activity for the asset or liability. In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, the level in the fair value hierarchy within which the fair value measurement in its entirety falls has been determined based on the lowest level input that is significant to the fair value measurement in its entirety. The Company’s assessment of the significance of a particular input to the fair value in its entirety requires judgment and considers factors specific to the asset or liability.
Environmental Liabilities Policy	'
	Environmental Liabilities. The Company records liabilities for remediation and restoration costs related to past activities when the Company’s obligation is probable and the costs can be reasonably estimated. Costs of future expenditures for environmental remediation are not discounted to their present value. Recoveries of environmental remediation costs from other parties are recorded as assets when their receipt is deemed probable. Costs of ongoing compliance activities related to current operations are expensed as incurred.
Personal Injury Claims Policy	'
	Personal Injury Claims. Personal injury claims in excess of self-insurance levels are insured up to certain coverage amounts, depending on the type of claim and year of occurrence. The Company’s personal injury liability is based on actuarial studies performed on an undiscounted basis by an independent third party actuarial firm and reviewed by management. The liability is based on claims filed and an estimate of claims incurred but not yet reported. Adjustments to the liability are reflected as operating expenses in the period in which the adjustments are known. Legal fees related to personal injury claims are recorded in operating expense in the period incurred.
Health and Welfare and Postemployment Benefits Policy	'
	Health and Welfare and Postemployment Benefits. The Company provides certain medical, life and other postemployment benefits to certain active employees and retirees. The Company uses actuaries to assist management in measuring the benefit obligation and cost based on the current plan provisions, employee demographics, and assumptions about financial and demographic factors affecting the probability, timing and amount of expected future benefit payments. Significant assumptions include the discount rate, rate of increase in compensation levels, and the health care cost trend rate. Actuarial gains and losses determined at the measurement date (typically December 31) are recognized immediately in the consolidated statements of income.
Employees' Statutory Profit Sharing Policy	'
	Employees’ Statutory Profit Sharing. Mexican employees are statutorily entitled to receive Participacion a los Trabajadores de las Utilidades (referred to by its Spanish acronym, PTU or Statutory Profit Sharing). This payment is based on an employer’s net profit based on accounting principles as prescribed in Mexican law, rather than net profit based on U.S. GAAP. Deferred employees’ statutory profit sharing is accounted for using the liability method in a manner similar to income taxes and included as a component of compensation and benefits within the consolidated statements of income.
Share-Based Compensation Policy	'
	Share-Based Compensation. The Company accounts for all share-based compensation in accordance with fair value recognition provisions. Under this method, compensation expense is measured at grant date fair value net of estimated forfeitures, and is recognized over the requisite service period in which the award is earned.
	The Company issues treasury stock to settle share-based awards. The Company does not intend to repurchase any shares in 2014 to provide shares to issue as share-based awards; however, management frequently evaluates the appropriateness of the level of shares outstanding.
Income Taxes Policy	'
	Income Taxes. Deferred income tax effects of transactions reported in different periods for financial reporting and income tax return purposes are recorded under the liability method of accounting for income taxes. This method gives consideration to the future tax consequences of the deferred income tax items and immediately recognizes changes in income tax laws in the year of enactment. In addition, the Company has not provided U.S. federal income taxes on the undistributed operating earnings of its foreign investments since the earnings will be reinvested indefinitely or the earnings will be remitted in a tax-free transaction.
	The Company has recognized a deferred tax asset, net of a valuation allowance, for net operating loss carryovers. The Company projects sufficient future taxable income to realize the deferred tax asset recorded less the valuation allowance. These projections take into consideration assumptions about inflation rates, currency fluctuations, future income and future capital expenditures. If assumptions or actual conditions change, the deferred tax asset, net of the valuation allowance, will be adjusted to properly reflect the expected tax benefit.

Earnings_Per_Share_Tables

Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2013
Earnings Per Share [Abstract]	'
Reconciliation of Basic Earnings Per Share Computation to the Diluted Earnings Per Share Computation	'
	The following table reconciles the basic earnings per share computation to the diluted earnings per share computation (in millions, except share and per share amounts):
		2013			2012			2011
	Net income available to common stockholders for purposes of computing basic earnings per share	$	351.2		$	377.1		$	328.7
	Effect of dividends on conversion of convertible preferred stock	—			—			1.3
	Net income available to common stockholders for purposes of computing diluted earnings per share	$	351.2		$	377.1		$	330
	Weighted-average number of shares outstanding (in thousands):
	Basic shares	109,973			109,712			108,208
	Additional weighted average shares attributable to:
	Convertible preferred stock	—			—			1,245
	Stock options and nonvested shares	367			368			377
	Diluted shares	110,340			110,080			109,830
	Basic earnings per share	$	3.19		$	3.44		$	3.04
	Diluted earnings per share	$	3.18		$	3.43		$	3
Schedule of Potentially Dilutive Shares Excluded from the Calculation	'
	Potentially dilutive shares excluded from the calculation (in thousands):
		2013		2012			2011
	Stock options excluded as their inclusion would be anti-dilutive	57		—			96

Property_and_Equipment_includi1

Property and Equipment (including Concession Assets) (Tables)	12 Months Ended
	Dec. 31, 2013
Property, Plant and Equipment [Abstract]	'
Property Plant and Equipment by Type	'
	The following tables list the major categories of property and equipment, including concession assets, as well as the weighted-average composite depreciation rate for each category (in millions, except percentages):
	As of December 31, 2013	Cost		Accumulated			Net Book		Depreciation
				Depreciation			Value		Rates for 2013
	Land	$	216.4	$	—		$	216.4	N/A
	Concession land rights	141.2		(20.9		)	120.3		1	%
	Rail and other track material	1,617.80		(341.1		)	1,276.70		1.8-3.1%
	Ties	1,425.10		(303.7		)	1,121.40		2.0-4.3%
	Grading	829.6		(129.7		)	699.9		1.1	%
	Bridges and tunnels	606.4		(116.5		)	489.9		1.2	%
	Ballast	602.7		(155.2		)	447.5		2.6-4.8%
	Other (a)	874.1		(252.8		)	621.3		2.9	%
	Total road property	5,955.70		(1,299.0		)	4,656.70		2.7	%
	Locomotives	1,017.40		(193.2		)	824.2		5	%
	Freight cars	362.2		(78.9		)	283.3		3.9	%
	Other equipment	56.6		(14.1		)	42.5		7.4	%
	Total equipment	1,436.20		(286.2		)	1,150.00		4.8	%
	Technology and other	152.8		(111.3		)	41.5		11.6	%
	Construction in progress	171.4		—			171.4		N/A
	Total property and equipment (including concession assets)	$	8,073.70	$	(1,717.4	)	$	6,356.30	N/A
	_____________
	(a)	Other includes signals, buildings and other road assets.
	As of December 31, 2012	Cost		Accumulated			Net Book		Depreciation
				Depreciation			Value		Rates for 2012
	Land	$	208.9	$	—		$	208.9	N/A
	Concession land rights	141.2		(19.5		)	121.7		1	%
	Rail and other track material	1,509.90		(338.8		)	1,171.10		1.8-2.8%
	Ties	1,343.00		(290.9		)	1,052.10		2.0-4.3%
	Grading	827.8		(123.7		)	704.1		1.1	%
	Bridges and tunnels	585.3		(110.7		)	474.6		1.3	%
	Ballast	565.8		(137.6		)	428.2		2.6-4.8%
	Other (a)	832.6		(232.6		)	600		3.1	%
	Total road property	5,664.40		(1,234.3		)	4,430.10		2.8	%
	Locomotives	728.8		(155.6		)	573.2		5.1	%
	Freight cars	196.4		(75.3		)	121.1		4.5	%
	Other equipment	37.4		(10.7		)	26.7		7.4	%
	Total equipment	962.6		(241.6		)	721		5.1	%
	Technology and other	148.1		(101.2		)	46.9		12.7	%
	Construction in progress	156.2		—			156.2		N/A
	Total property and equipment (including	$	7,281.40	$	(1,596.6	)	$	5,684.80	N/A
	concession assets)
	_____________
	(a)	Other includes signals, buildings and other road assets.

Other_Balance_Sheet_Captions_T

Other Balance Sheet Captions (Tables)	12 Months Ended
	Dec. 31, 2013
Other Balance Sheet Captions [Abstract]	'
Schedule of Other Current Assets	'
	Other current assets included the following items at December 31 (in millions):
		2013		2012
	Refundable taxes	$	40.7	$	31.4
	Prepaid expenses	17.7		16.6
	Other	3.3		0.4
	Other current assets	$	61.7	$	48.4
Schedule of Accounts Payable and Accrued Liabilities	'
	Accounts payable and accrued liabilities included the following items at December 31 (in millions):
		2013		2012
	Accounts payable	$	200.5	$	169.1
	Accrued wages and vacation	72.7		71.2
	Derailments, personal injury and other claim provisions	47.9		52.7
	Dividends payable	23.8		—
	Income and other taxes	18.5		28.7
	Rents and leases payable	10.9		12.3
	Interest payable	10.3		15.5
	Other	14		15.1
	Accounts payable and accrued liabilities	$	398.6	$	364.6

Derivative_Instruments_Tables

Derivative Instruments (Tables)	12 Months Ended
	Dec. 31, 2013
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Schedule of Derivative Instruments in Consolidated Balance Sheets, Fair Value	'
	The following table presents the fair value of derivative instruments included in the consolidated balance sheet (in millions):
		Derivative Liabilities
		Balance Sheet Location		December 31,			December 31, 2012
				2013
	Derivatives designated as hedging instruments:
	Interest rate swaps	Accounts payable and accrued liabilities		$	0.1		$	—
	Interest rate swaps	Other noncurrent liabilities and deferred credits		—			0.9
	Total derivatives designated as hedging instruments			0.1			0.9
	Total derivative liabilities			$	0.1		$	0.9
Schedule of Derivative Instruments, Gain (Loss) in Consolidated Statements of Income	'
	The following table presents the amounts affecting the consolidated statements of income for the years ended December 31 (in millions):
	Derivatives in Cash		Amount of Gain/(Loss) Recognized in OCI on Derivative (Effective Portion)								Location of Gain/(Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	Amount of Gain/(Loss) Reclassified from Accumulated OCI into Income (Effective Portion)
	Flow Hedging
	Relationships
			2013			2012			2011			2013			2012			2011
	Interest rate swaps		$	(0.2	)	$	(1.6	)	$	—	Interest expense	$	(0.6	)	$	(0.7	)	$	(0.4	)
											Debt retirement costs	(0.4		)	—			—
	Total		$	(0.2	)	$	(1.6	)	$	—		$	(1.0	)	$	(0.7	)	$	(0.4	)
	Derivatives not designated as hedging instruments										Location of Gain/(Loss) Recognized in Income on Derivative	Amount of Gain/(Loss) Recognized in Income on Derivative
												2013			2012			2011
	Foreign currency forward contracts										Foreign exchange gain (loss)	$	(0.7	)	$	—		$	—
	Total											$	(0.7	)	$	—		$	—

LongTerm_Debt_Tables

Long-Term Debt (Tables)	12 Months Ended
	Dec. 31, 2013
Debt Disclosure [Abstract]	'
Schedule of Long-Term Debt Instruments	'
	Long-term debt at December 31 (in millions):
		2013		2012
	KCSR
	Revolving credit facility, variable interest rate, due 2017	$	—	$	—
	Term loans, variable interest rate, 1.420% at December 31, 2013, due 2018	245.3		543.8
	RRIF loan, 2.96%, due serially to 2037	52		53.5
	4.30% senior notes, due 2043	445.9		—
	3.85% senior notes, due 2023	199.7		—
	Capital lease obligations, due serially to 2019	9.8		12.1
	Other debt obligations	0.4		0.4
	Tex-Mex
	RRIF loan, 4.29%, due serially to 2030	39.4		41
	KCSM
	Revolving credit facility, variable interest rate, due 2017	—		—
	121/2% senior notes	—		95
	8.0% senior notes, due 2018	62.3		296.9
	65/8% senior notes	—		185
	61/8% senior notes	—		200
	2.35% senior notes, due 2020	274.7		—
	3.0% senior notes, due 2023	448.2		—
	Floating rate senior notes, variable interest rate, 0.9369% at December 31, 2013, due 2016	250		—
	5.737% financing agreement, due 2023	43.8		48.4
	6.195% financing agreement, due 2023	33.9		37.4
	9.310% loan agreements, due 2020	74.6		81.7
	Capital lease obligations, due serially to 2017	7.4		9.8
	Other debt obligations	1.3		2.6
	KCS
	Other debt obligations	0.2		0.2
	Total	2,188.90		1,607.80
	Less: Debt due within one year	332		60.2
	Long-term debt	$	1,856.90	$	1,547.60
Schedule Of Future Minimum Payments For Long Term Debt, Capital And Operating Leases	'
	Minimum annual payments and present value thereof under existing capital leases, other debt maturities and minimum annual rental commitments under non-cancelable operating leases are as follows (in millions):
		Long-		Capital Leases						Total		Operating Leases (i)
		Term								Debt
	Years	Debt		Minimum		Less		Net				Southern		Third		Total
				Lease		Interest		Present				Capital		Party
				Payments				Value
	2014	$	327.9	$	5	$	0.9	$	4.1	$	332	$	8.5	$	90.5	$	99
	2015	20.1		5		0.8		4.2		24.3		8.3		78.2		86.5
	2016	270.8		4.5		0.6		3.9		274.7		8.3		68.1		76.4
	2017	22		2.3		0.3		2		24		8.3		55.1		63.4
	2018	35.2		2.2		0.2		2		37.2		8.3		34.9		43.2
	Thereafter	1,495.70		1		—		1		1,496.70		30.4		124.7		155.1
	Total	$	2,171.70	$	20	$	2.8	$	17.2	$	2,188.90	$	72.1	$	451.5	$	523.6
	_____________________
	(i)	During the fourth quarter of 2013, the Company initiated the Lease Conversion Program to purchase certain equipment under existing operating leases and to purchase replacement equipment as certain operating leases expire. Refer to Note 19 Subsequent Events for further information.

Income_Taxes_Tables

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'
Schedule of Components of Income Tax Expense	'
	Tax Expense. Income tax expense consists of the following components (in millions):
		2013			2012				2011
	Current:
	Federal	$	6		$	2.8			$	—
	State and local	1.9			0.7				0.7
	Foreign	79.2			36.2				1.7
	Total current	87.1			39.7				2.4
	Deferred:
	Federal	99			99.2				78
	State and local	11.9			(7.4		)		4.5
	Foreign	0.3			105.5				38.2
	Total deferred	111.2			197.3				120.7
	Total income tax expense	$	198.3		$	237			$	123.1
Schedule of Income before Income Taxes, Domestic and Foreign	'
	Income before income taxes consists of the following (in millions):
		2013			2012				2011
	Income before income taxes:
	U.S.	$	319.2		$	282.8			$	231
	Foreign	232.4			333.6				224
	Total income before income taxes	$	551.6		$	616.4			$	455
Schedule of Deferred Tax Assets and Liabilities	'
	The tax effects of temporary differences that give rise to significant portions of the deferred tax assets and deferred tax liabilities follow at December 31 (in millions):
		2013			2012
	Assets:
	Loss carryovers	$	52.6		$	54.3
	Book reserves not currently deductible for tax	94.3			77.1
	Other	64.6			76.1
	Gross deferred tax assets before valuation allowance	211.5			207.5
	Valuation allowance	(3.4		)	(4.3		)
	Net deferred tax assets	208.1			203.2
	Liabilities:
	Depreciation and amortization	(1,047.1		)	(925.5		)
	Investments	(66.3		)	(73.8		)
	Other	(7.7		)	(6.0		)
	Gross deferred tax liabilities	(1,121.1		)	(1,005.3		)
	Net deferred tax liability	$	(913.0	)	$	(802.1	)
Schedule of Effective Income Tax Rate Reconciliation	'
	Tax Rates. Differences between the Company’s effective income tax rate and the U.S. federal statutory income tax rate of 35% follow (in millions):
		2013						2012					2011
		Dollars			Percent			Dollars			Percent		Dollars			Percent
	Income tax expense using the statutory rate in effect	$	193.1		35	%		$	215.7		35	%	$	159.3		35	%
	Tax effect of:
	Difference between U.S. and foreign tax rate	(15.4		)	(2.8	%)		(18.4		)	(3.0	%)	(14.5		)	(3.2	%)
	Foreign exchange and inflation adjustments (i)	4.7			0.8	%		42.3			6.9	%	(23.5		)	(5.2	%)
	State and local income tax provision, net	8.9			1.6	%		8.4			1.3	%	7			1.5	%
	Change in valuation allowances	(0.9		)	(0.2	%)		(11.2		)	(1.8	%)	(1.6		)	(0.4	%)
	Tax credits	(4.0		)	(0.7	%)		(3.1		)	(0.5	%)	(2.3		)	(0.5	%)
	Reversal of previously recognized benefit due to court ruling	4.4			0.8	%		—			—		—			—
	Uncertain tax positions	(0.1		)	—			1.9			0.3	%	—			—
	Other, net	7.6			1.4	%		1.4			0.2	%	(1.3		)	(0.1	%)
	Income tax expense	$	198.3		35.9	%		$	237		38.4	%	$	123.1		27.1	%
Schedule of Change in Unrecognized Tax Benefits	'
	A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows (in millions):
		2013			2012
	Balance at January 1,	$	3.6		$	1.7
	Additions based on tax positions related to the current year	—			0.9
	Additions for tax positions of prior years	—			1
	Reductions for tax positions of prior years	(0.1		)	—
	Balance at December 31,	$	3.5		$	3.6

Stockholders_Equity_Tables

Stockholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2013
Stockholders' Equity Note [Abstract]	'
Schedule of Capital Stock	'
	Information regarding the Company’s capital stock at December 31 follows:
		Shares Authorized						Shares Issued
		2013			2012			2013			2012
	$25 par, 4% noncumulative, preferred stock	840,000			840,000			649,736			649,736
	$1 par, preferred stock	2,000,000			2,000,000			—			—
	$.01 par, common stock	400,000,000			400,000,000			123,352,185			123,352,185
	Shares outstanding at December 31:
		2013			2012
	$25 par, 4% noncumulative, preferred stock	242,170			242,170
	$.01 par, common stock	110,229,229			110,131,353
Schedule of Treasury Stock	'
	Shares of common stock in Treasury and related activity follow:
		2013			2012			2011
	Balance at beginning of year	13,220,832			13,441,328			13,703,453
	Shares issued to fund stock option exercises	(54,209	)		(141,728	)		(158,440	)
	Employee stock purchase plan shares issued	(42,391	)		(44,319	)		(59,390	)
	Nonvested shares issued	(5,723	)		(56,136	)		(57,659	)
	Nonvested shares forfeited	4,447			21,687			13,364
	Balance at end of year	13,122,956			13,220,832			13,441,328
Schedule of Accumulated Other Comprehensive Loss	'
	The following table summarizes the changes in the after-tax balances of each component of accumulated other comprehensive income (loss) (in millions):
		Postemployment Benefits				Foreign Currency Translation Adjustment				Unrealized Loss on Cash Flow Hedges				Accumulated Other Comprehensive Loss
	Balance at December 31, 2011	$	0.5			$	(2.7	)		$	—			$	(2.2	)
	Other comprehensive income (loss) before reclassifications	—				0.5				(1.0		)		(0.5		)
	Amounts reclassified from accumulated other comprehensive loss	(0.1		)		—				0.4				0.3
	Net current-period other comprehensive income (loss)	(0.1		)		0.5				(0.6		)		(0.2		)
	Balance at December 31, 2012	0.4				(2.2		)		(0.6		)		(2.4		)
	Other comprehensive loss before reclassifications	—				—				(0.2		)		(0.2		)
	Amounts reclassified from accumulated other comprehensive loss	(0.1		)		—				0.7				0.6
	Net current-period other comprehensive income (loss)	(0.1		)		—				0.5				0.4
	Balance at December 31, 2013	$	0.3			$	(2.2	)		$	(0.1	)		$	(2.0	)
Schedule of Effects on Net Income of Significant Amounts Being Reclassified out of Accumulated Other Comprehensive Income (Loss)	'
	The following table summarizes the effects on net income of significant amounts being reclassified out of each component of accumulated other comprehensive income (loss) for the year ended December 31 (in millions):
	Details about Accumulated Other Comprehensive Income (Loss) Components		2013				2012				2011				Affected Line Item in the Consolidated Statements of Income
	Unrealized losses on cash flow hedges:
	Interest rate swaps		$	(0.6	)		$	(0.7	)		$	(0.4	)		Interest expense
			(0.4		)		—				—				Debt retirement costs
	Total before tax		(1.0		)		(0.7		)		(0.4		)
	Tax effect		0.3				0.3				0.2				Income tax expense
	Net of tax		(0.7		)		(0.4		)		(0.2		)
	Postemployment benefits:
	Amortization of prior service credit		0.2				0.2				0.3				Compensation and benefits expense
	Total before tax		0.2				0.2				0.3
	Tax effect		(0.1		)		(0.1		)		(0.1		)		Income tax expense
	Net of tax		0.1				0.1				0.2
	Total reclassification for the period, net of tax		$	(0.6	)		$	(0.3	)		$	—
Schedule of Cash Dividends Declared per Common Share	'
	The following table presents the amount of cash dividends declared per common share by the Company’s Board of Directors:
		2013				2012				2011
	Cash dividends declared per common share	$	0.86			$	0.78			$	—

ShareBased_Compensation_Tables

Share-Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2013
Share-based Compensation [Abstract]	'
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions	'
	The weighted-average assumptions used were as follows:
		2013				2012				2011
	Expected dividend yield	0.88		%		0		%		0		%
	Expected volatility	46.12		%		46.59		%		45.4		%
	Risk-free interest rate	1.11		%		0.46		%		1.29		%
	Expected term (years)	6				6				6
	Weighted-average grant date fair value of stock options granted	$	40.05			$	29.45			$	23.39
Schedule of Share-based Compensation, Stock Option Activity	'
	The following table summarizes the stock option activity under the Plans:
		Number of			Weighted-				Weighted-		Aggregate
		Shares			Average				Average		Intrinsic
					Exercise				Remaining		Value
					Price				Contractual
					Per Share				Term
									In years		In millions
	Options outstanding at December 31, 2012	368,071			$	43.67
	Granted	57,406			97.77
	Exercised	(61,845	)		27.28
	Forfeited or expired	(873	)		77.83
	Options outstanding at December 31, 2013	362,759			$	54.94			7		$	25
	Vested and expected to vest at December 31, 2013	359,410			$	54.76			6.98		$	24.8
	Exercisable at December 31, 2013	228,457			$	42.56			6.23		$	18.6
Schedule of Stock Option Exercise Activity	'
	Additional information regarding stock option exercises appears in the table below (in millions):
		2013				2012				2011
	Aggregate grant-date fair value of stock options vested	$	1.8			$	1.3			$	1.1
	Intrinsic value of stock options exercised	5				12.1				9.5
	Cash received from option exercises	1.5				1.9				2.1
	Tax benefit realized from options exercised during the annual period	1.9				4.6				0.2
Schedule of Share-based Compensation, Nonvested Stock Activity	'
	A summary of nonvested stock activity is as follows:
		Number of			Weighted-				Aggregate
		Shares			Average Grant				Intrinsic
					Date Fair				Value
					Value
									In millions
	Nonvested stock at December 31, 2012	278,967			$	49.37
	Granted	46,031			103.38
	Vested	(118,491	)		47.25
	Forfeited	(4,447	)		45.65
	Nonvested stock at December 31, 2013	202,060			$	63			$	25
Schedule of Share-based Compensation, Performance Based Award Activity	'
	A summary of performance based nonvested stock activity at target is as follows:
		Target Number of Shares *			Weighted-Average Grant Date Fair Value
	Nonvested stock, at December 31, 2012	108,579			$	60.54
	Granted	71,471			82.34
	Vested	—			—
	Forfeited	(1,164	)		69.95
	Nonvested stock, at December 31, 2013	178,886			$	69.19
	_____________________
	* For the 2013 Awards and the 2012 Awards, participants in the aggregate can earn up to a maximum of 93,414 and 118,558 shares, respectively. For the 2011 Awards, the performance shares earned were 118,839.
Schedule of Employee Stock Purchase Plan Activity	'
	The following table summarizes activity related to the various ESPP offerings:
		Exercise Date									Received
											from
		Date		Purchase				Shares			Employees(i)
		Issued		Price				Issued
											In millions
	July 2013 offering	January 13, 2014		$	97.58			16,376			$	1.6
	January 2013 offering	July 12, 2013		77.53				19,292			1.5
	July 2012 offering	January 14, 2013		61.73				23,099			1.4
	January 2012 offering	July 13, 2012		61.84				21,559			1.3
	July 2011 offering	January 13, 2012		54.55				22,760			1.2
	January 2011 offering	July 14, 2011		43.76				27,170			1.2
	_____________________
	(i)	Represents amounts received from employees through payroll deductions for share purchases under applicable offering.
Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions	'
	The weighted-average assumptions used for each of the respective periods were as follows:
		Year Ended December 31,
		2013				2012				2011
	Expected dividend yield	0.9		%		0.59		%		0		%
	Expected volatility	18.3		%		28.97		%		22.72		%
	Risk-free interest rate	0.13		%		0.14		%		0.18		%
	Expected term (years)	0.5				0.5				0.5
	Weighted-average grant date fair value	$	14.48			$	12.4			$	8.87

Postemployment_Benefits_Tables

Postemployment Benefits (Tables)	12 Months Ended
	Dec. 31, 2013
Postemployment Benefits [Abstract]	'
Schedule of Net Benefit Costs	'
	Components of the net cost (benefit) for these plans were as follows for the years ended December 31 (in millions):
		Health and Welfare											Postemployment Benefits
		2013				2012				2011			2013			2012		2011
	Service cost	$	0.1			$	0.1			$	0.1		$	0.9		$	0.9	$	0.9
	Interest cost	0.2				0.2				0.3			0.9			0.8		0.9
	Actuarial (gain) loss (i)	(0.9		)		0.1				1.6			(1.0		)	3.1		0.8
	Foreign currency (gain) loss	—				—				—			(0.1		)	0.6		(1.4		)
	Prior service credit (ii)	(0.2		)		(0.2		)		(0.2		)	—			—		—
	Net periodic cost (benefit) recognized	$	(0.8	)		$	0.2			$	1.8		$	0.7		$	5.4	$	1.2
	_____________________
	(i)	Net benefit costs above do not include a component for the amortization of actuarial gains or losses as the Company’s policy is to recognize such gains and losses immediately.
	(ii)	During 2005, the Company revised its medical plan to exclude prescription drug coverage available under Medicare part D. This negative plan amendment generated an unrecognized prior service benefit of $2.3 million which is being amortized over the estimated remaining life of the affected participants of 9.5 years.
Schedule Of Changes In Projected Benefit Obligation And Plan Assets	'
	The following table reconciles the change in the benefit obligation, fair value of plan assets, funded status, and the accrued benefit cost as of and for each of the years ended December 31 (in millions):
		Health and Welfare								Postemployment Benefits
		2013				2012				2013			2012
	Benefit obligation at beginning of year	$	6.5			$	6.4			$	13.2		$	10
	Service cost	0.1				0.1				0.9			0.9
	Interest cost	0.2				0.2				0.9			0.8
	Actuarial (gain) loss	(0.9		)		0.1				(1.0		)	3.1
	Foreign currency (gain) loss	—				—				(0.1		)	0.6
	Benefits paid, net of retiree contributions	(0.4		)		(0.3		)		(1.1		)	(2.2		)
	Benefit obligation at end of year	$	5.5			$	6.5			$	12.8		$	13.2
	Funded status	$	(5.5	)		$	(6.5	)		$	(12.8	)	$	(13.2	)
Schedule of Assumptions Used	'
	Weighted average assumptions used to determine benefit obligations were as follows for the years ended December 31:
		Health and Welfare						Postemployment Benefits
		2013			2012			2013			2012
	Discount rate	4.5	%		3.5	%		8.25	%		6.75	%
	Rate of compensation increase	n/a			n/a			4.5	%		4.5	%
	Weighted average assumptions used to determine net benefit cost for the periods were as follows for the years ended December 31:
		Health and Welfare						Postemployment Benefits
		2013			2012			2013			2012
	Discount rate	3.5	%		4	%		6.75	%		8	%
	Rate of compensation increase	n/a			n/a			4.5	%		4.5	%
	The following table presents the assumed health care cost trends:
		2013			2012			2011
	Health care trend rate for next year	6.5	%		8	%		8.5	%
	Ultimate trend rate	5	%		5	%		5	%
	Year that rate reaches ultimate rate	2023			2029			2020
Schedule of Expected Benefit Payments	'
	The following table presents benefit payments expected to be paid, which reflect expected future service, as appropriate, for each of the next five years and the aggregate five years thereafter (in millions):
	Year	Health and				Postemployment
		Welfare				Benefits
	2014	$	0.6			$	0.7
	2015	0.5				0.8
	2016	0.5				0.9
	2017	0.4				0.9
	2018	0.4				1
	2019-2023	1.8				6.3

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]	'
Personal Injury Liability Activity	'
	The personal injury liability activity was as follows (in millions):
		2013			2012
	Balance at beginning of year	$	34.4		$	40.1
	Accruals	8.8			10
	Change in estimate	1.3			(8.4		)
	Payments	(13.3		)	(7.3		)
	Balance at end of year	$	31.2		$	34.4

Quarterly_Financial_Data_Unaud1

Quarterly Financial Data (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2013
Quarterly Financial Data [Abstract]	'
Schedule of Quarterly Financial Information	'
		Fourth		Third		Second			First
		(In millions, except per share amounts)
	2013
	Revenues	$	615.6	$	621.6	$	579.3		$	552.8
	Operating income	196.1		200.3		179.3			162.9
	Net income	114.4		119		15.7		(i)	104.2
	Net income attributable to Kansas City Southern and subsidiaries	113.8		118.4		15.4		(i)	103.8
	Per share data:
	Basic earnings per common share	$	1.03	$	1.08	$	0.14		$	0.94
	Diluted earnings per common share	1.03		1.07		0.14			0.94
	2012
	Revenues	$	568.4	$	577.4	$	545.3		$	547.5
	Operating income	173.6		180.7		203.8		(ii)	157.8
	Net income	92.5		90.7		120.9			75.3
	Net income attributable to Kansas City Southern and subsidiaries	91.8		90.1		120.4			75
	Per share data:
	Basic earnings per common share	$	0.84	$	0.82	$	1.1		$	0.68
	Diluted earnings per common share	0.83		0.82		1.09			0.68
	_____________________
	(i)	During the second quarter of 2013, the Company recognized pre-tax $111.4 million of debt retirement costs related to debt restructuring activities that occurred during the period.
	(ii)	During the second quarter of 2012, the Company recognized a pre-tax gain of $43.0 million within operating expenses for the elimination of deferred statutory profit sharing liability, net as a result of the organizational restructuring during the period.

Condensed_Consolidating_Financ1

Condensed Consolidating Financial Information (Tables)	12 Months Ended
	Dec. 31, 2013
Condensed Consolidating Financial Information [Abstract]	'
Condensed Consolidating Statements of Comprehensive Income	'
	Condensed Consolidating Statements of Comprehensive Income
		2013
		Parent			KCSR			Guarantor			Non-Guarantor			Consolidating			Consolidated
								Subsidiaries			Subsidiaries			Adjustments			KCS
	Revenues	$	—		$	1,115.00		$	42.6		$	1,251.90		$	(40.2	)	$	2,369.30
	Operating expenses	4.8			829.6			39			800.1			(42.8		)	1,630.70
	Operating income (loss)	(4.8		)	285.4			3.6			451.8			2.6			738.6
	Equity in net earnings of unconsolidated affiliates	318.3			1.1			6.3			15.7			(322.6		)	18.8
	Interest expense	(0.1		)	(68.5		)	0.1			(59.3		)	47.2			(80.6		)
	Debt retirement costs	—			(1.5		)	—			(117.7		)	—			(119.2		)
	Foreign exchange loss	—			(1.3		)	—			(3.9		)	—			(5.2		)
	Other income (expense), net	44.6			5.1			(0.1		)	(0.6		)	(49.8		)	(0.8		)
	Income before income taxes	358			220.3			9.9			286			(322.6		)	551.6
	Income tax expense	17.6			81.2			2.9			96.6			—			198.3
	Net income	340.4			139.1			7			189.4			(322.6		)	353.3
	Less: Net income attributable to noncontrolling interest	—			—			1.9			—			—			1.9
	Net income attributable to Kansas City Southern and subsidiaries	340.4			139.1			5.1			189.4			(322.6		)	351.4
	Other comprehensive income (loss)	0.4			0.5			—			(0.1		)	(0.4		)	0.4
	Comprehensive income attributable to Kansas City Southern and subsidiaries	$	340.8		$	139.6		$	5.1		$	189.3		$	(323.0	)	$	351.8
	Condensed Consolidating Statements of Comprehensive Income—(Continued)
		2012
		Parent			KCSR			Guarantor			Non-Guarantor			Consolidating			Consolidated
								Subsidiaries			Subsidiaries			Adjustments			KCS
	Revenues	$	—		$	1,079.70		$	29.9		$	1,164.70		$	(35.7	)	$	2,238.60
	Operating expenses	4.2			805			34			717.7			(38.2		)	1,522.70
	Operating income (loss)	(4.2		)	274.7			(4.1		)	447			2.5			715.9
	Equity in net earnings of unconsolidated affiliates	218.9			2.6			6.6			15.5			(224.3		)	19.3
	Interest expense	(0.1		)	(65.0		)	—			(88.2		)	52.9			(100.4		)
	Debt retirement costs	—			(19.6		)	—			(0.5		)	—			(20.1		)
	Foreign exchange gain	—			—			—			2.7			—			2.7
	Other income (expense), net	46.5			11.7			—			(128.5		)	69.3			(1.0		)
	Income before income taxes	261.1			204.4			2.5			248			(99.6		)	616.4
	Income tax expense (benefit)	8.4			74.4			(0.2		)	154.4			—			237
	Net income	252.7			130			2.7			93.6			(99.6		)	379.4
	Less: Net income attributable to noncontrolling interest	—			—			2.1			—			—			2.1
	Net income attributable to Kansas City Southern and subsidiaries	252.7			130			0.6			93.6			(99.6		)	377.3
	Other comprehensive income (loss)	(0.2		)	(0.6		)	—			0.9			(0.3		)	(0.2		)
	Comprehensive income attributable to Kansas City Southern and subsidiaries	$	252.5		$	129.4		$	0.6		$	94.5		$	(99.9	)	$	377.1
	Condensed Consolidating Statements of Comprehensive Income—(Continued)
		2011
		Parent			KCSR			Guarantor			Non-Guarantor			Consolidating			Consolidated
								Subsidiaries			Subsidiaries			Adjustments			KCS
	Revenues	$	—		$	1,030.60		$	24		$	1,074.70		$	(31.0	)	$	2,098.30
	Operating expenses	4			765.5			27.5			723.2			(33.5		)	1,486.70
	Operating income (loss)	(4.0		)	265.1			(3.5		)	351.5			2.5			611.6
	Equity in net earnings of unconsolidated affiliates	309.2			2.6			5.7			14.9			(314.2		)	18.2
	Interest expense	(0.1		)	(88.8		)	—			(80.7		)	40.5			(129.1		)
	Debt retirement costs	—			(28.4		)	—			(10.3		)	—			(38.7		)
	Foreign exchange loss	—			—			—			(9.2		)	—			(9.2		)
	Other income, net	39.7			5.4			0.1			—			(43.0		)	2.2
	Income before income taxes	344.8			155.9			2.3			266.2			(314.2		)	455
	Income tax expense (benefit)	14.5			55.5			(0.7		)	53.8			—			123.1
	Net income	330.3			100.4			3			212.4			(314.2		)	331.9
	Less: Net income attributable to noncontrolling interest	—			—			1.6			—			—			1.6
	Net income attributable to Kansas City Southern and subsidiaries	330.3			100.4			1.4			212.4			(314.2		)	330.3
	Other comprehensive income (loss)	(0.8		)	0.2			—			(1.3		)	1.1			(0.8		)
	Comprehensive income attributable to Kansas City Southern and subsidiaries	$	329.5		$	100.6		$	1.4		$	211.1		$	(313.1	)	$	329.5
Condensed Consolidating Balance Sheets	'
	Condensed Consolidating Balance Sheets
		December 31, 2013
		Parent			KCSR			Guarantor			Non-Guarantor			Consolidating			Consolidated
								Subsidiaries			Subsidiaries			Adjustments			KCS
	Assets:
	Current assets	$	2.6		$	403		$	8.8		$	560.1		$	(32.1	)	$	942.4
	Investments	—			9.6			—			31.5			—			41.1
	Investments in consolidated subsidiaries	2,154.60			(2.1		)	461.8			—			(2,614.3		)	—
	Restricted funds	—			—			—			4.2			—			4.2
	Property and equipment (including concession assets), net	0.1			2,780.40			198.6			3,377.20			—			6,356.30
	Other assets	1.5			50.9			—			39			—			91.4
	Total assets	$	2,158.80		$	3,241.80		$	669.2		$	4,012.00		$	(2,646.4	)	$	7,435.40
	Liabilities and equity:
	Current liabilities	$	(1,216.5	)	$	1,580.60		$	130.7		$	267.9		$	(32.1	)	$	730.6
	Long-term debt	0.2			704.3			0.2			1,152.20			—			1,856.90
	Deferred income taxes	(11.7		)	719.8			127.6			208.9			—			1,044.60
	Other liabilities	6.6			92			0.7			27.5			(0.1		)	126.7
	Stockholders’ equity	3,380.20			145.1			104			2,355.50			(2,614.2		)	3,370.60
	Noncontrolling interest	—			—			306			—			—			306
	Total liabilities and equity	$	2,158.80		$	3,241.80		$	669.2		$	4,012.00		$	(2,646.4	)	$	7,435.40
	Condensed Consolidating Balance Sheets—(Continued)
		December 31, 2012
		Parent			KCSR			Guarantor			Non-Guarantor			Consolidating			Consolidated
								Subsidiaries			Subsidiaries			Adjustments			KCS
	Assets:
	Current assets	$	2.4		$	236.4		$	5.4		$	318.6		$	(40.5	)	$	522.3
	Investments	—			23.9			—			27.6			—			51.5
	Investments in consolidated subsidiaries	2,242.00			(0.2		)	454.8			—			(2,696.6		)	—
	Restricted funds	—			—			—			14.2			—			14.2
	Property and equipment (including concession assets), net	—			2,275.00			204.3			3,205.50			—			5,684.80
	Other assets	1.3			190.6			—			67.7			(136.5		)	123.1
	Total assets	$	2,245.70		$	2,725.70		$	664.5		$	3,633.60		$	(2,873.6	)	$	6,395.90
	Liabilities and equity:
	Current liabilities	$	(881.1	)	$	1,058.90		$	131.4		$	156.1		$	(40.5	)	$	424.8
	Long-term debt	0.2			569.6			0.3			1,090.30			(112.8		)	1,547.60
	Deferred income taxes	2.7			575.5			130			186			—			894.2
	Other liabilities	6.7			116.4			0.4			28.8			(23.7		)	128.6
	Stockholders’ equity	3,117.20			405.3			98.3			2,172.40			(2,696.6		)	3,096.60
	Noncontrolling interest	—			—			304.1			—			—			304.1
	Total liabilities and equity	$	2,245.70		$	2,725.70		$	664.5		$	3,633.60		$	(2,873.6	)	$	6,395.90
Condensed Consolidating Statements of Cash Flows	'
	Condensed Consolidating Statements of Cash Flows
		2013
		Parent			KCSR			Guarantor			Non-Guarantor			Consolidating			Consolidated
								Subsidiaries			Subsidiaries			Adjustments			KCS
	Operating activities:
	Net cash provided	$	70.7		$	272.2		$	2.6		$	463.8		$	(11.0	)	$	798.3
	Investing activities:
	Capital expenditures	—			(417.4		)	(2.0		)	(175.8		)	0.4			(594.8		)
	Purchase or replacement of equipment under operating leases	—			(130.9		)	—			(80.9		)	—			(211.8		)
	Property investments in MSLLC	—			—			—			(31.6		)	—			(31.6		)
	Proceeds from repayment of loans to affiliates	—			181.4			—			—			(181.4		)	—
	Loans to affiliates	—			(69.5		)	—			—			69.5			—
	Other investing activities	(4.9		)	(5.1		)	(1.1		)	10.8			5.2			4.9
	Net cash used	(4.9		)	(441.5		)	(3.1		)	(277.5		)	(106.3		)	(833.3		)
	Financing activities:
	Proceeds from issuance of long-term debt	—			687.6			—			1,230.80			—			1,918.40
	Repayment of long-term debt	—			(344.3		)	(0.1		)	(998.8		)	—			(1,343.2		)
	Debt costs	—			(7.5		)	—			(110.3		)	—			(117.8		)
	Dividends paid	(71.2		)	—			—			(11.0		)	11			(71.2		)
	Proceeds from loans from affiliates	—			—			—			69.5			(69.5		)	—
	Repayment of loans from affiliates	—			—			—			(181.4		)	181.4			—
	Other financing activities	5.7			—			0.7			4.9			(5.6		)	5.7
	Net cash provided (used)	(65.5		)	335.8			0.6			3.7			117.3			391.9
	Cash and cash equivalents:
	Net increase	0.3			166.5			0.1			190			—			356.9
	At beginning of year	0.1			29.6			0.1			42.8			—			72.6
	At end of year	$	0.4		$	196.1		$	0.2		$	232.8		$	—		$	429.5
	Condensed Consolidating Statements of Cash Flows—(Continued)
		2012
		Parent			KCSR			Guarantor			Non-Guarantor			Consolidating			Consolidated
								Subsidiaries			Subsidiaries			Adjustments			KCS
	Operating activities:
	Net cash provided	$	53.3		$	236.4		$	2.3		$	389.2		$	(8.0	)	$	673.2
	Investing activities:
	Capital expenditures	—			(281.2		)	(2.1		)	(233.8		)	—			(517.1		)
	Purchase or replacement of equipment under operating leases	—			(19.7		)	—			(3.2		)	—			(22.9		)
	Property investments in MSLLC	—			—			—			(35.2		)	—			(35.2		)
	Proceeds from repayment of loans to affiliates	—			87.2			—			—			(87.2		)	—
	Other investing activities	(0.5		)	5.8			(0.5		)	17.5			1			23.3
	Net cash used	(0.5		)	(207.9		)	(2.6		)	(254.7		)	(86.2		)	(551.9		)
	Financing activities:
	Proceeds from issuance of long-term debt	—			329.6			—			—			—			329.6
	Repayment of long-term debt	—			(356.2		)	(0.1		)	(19.6		)	—			(375.9		)
	Debt costs	—			(21.3		)	—			(0.8		)	—			(22.1		)
	Dividends paid	(86.1		)	—			—			(8.0		)	8			(86.1		)
	Repayment of loans from affiliates	—			—			—			(87.2		)	87.2			—
	Other financing activities	33.4			—			0.5			0.5			(1.0		)	33.4
	Net cash provided (used)	(52.7		)	(47.9		)	0.4			(115.1		)	94.2			(121.1		)
	Cash and cash equivalents:
	Net increase (decrease)	0.1			(19.4		)	0.1			19.4			—			0.2
	At beginning of year	—			49			—			23.4			—			72.4
	At end of year	$	0.1		$	29.6		$	0.1		$	42.8		$	—		$	72.6
	Condensed Consolidating Statements of Cash Flows—(Continued)
		2011
		Parent			KCSR			Guarantor			Non-Guarantor			Consolidating			Consolidated
								Subsidiaries			Subsidiaries			Adjustments			KCS
	Operating activities:
	Net cash provided (used)	$	(77.8	)	$	420		$	7.6		$	288.3		$	(0.1	)	$	638
	Investing activities:
	Capital expenditures	—			(295.7		)	(7.6		)	(178.9		)	—			(482.2		)
	Purchase or replacement of equipment under operating leases	—			—			—			(12.8		)	—			(12.8		)
	Return of investment	84.4			—			—			—			(84.4		)	—
	Property investments in MSLLC	—			—			—			(33.3		)	—			(33.3		)
Other investing activities	(6.0		)	(5.0		)	(6.0		)	22.8			12.1			17.9
Net cash provided (used)	78.4			(300.7		)	(13.6		)	(202.2		)	(72.3		)	(510.4		)
Financing activities:
Proceeds from issuance of long-term debt	—			350			—			200			—			550
Repayment of long-term debt	—			(437.1		)	—			(216.2		)	—			(653.3		)
Debt costs	—			(21.0		)	—			(15.6		)	—			(36.6		)
Dividends paid	(3.0		)	—			—			—			—			(3.0		)
Distribution to affiliate	—			—			—			(84.4		)	84.4			—
Other financing activities	2.3			—			6			6			(12.0		)	2.3
Net cash provided (used)	(0.7		)	(108.1		)	6			(110.2		)	72.4			(140.6		)
Cash and cash equivalents:
Net increase (decrease)	(0.1		)	11.2			—			(24.1		)	—			(13.0		)
At beginning of year	0.1			37.8			—			47.5			—			85.4
At end of year	$	—		$	49		$	—		$	23.4		$	—		$	72.4

Geographic_Information_Tables

Geographic Information (Tables)	12 Months Ended
	Dec. 31, 2013
Segment Reporting [Abstract]	'
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas	'
	The following tables provide information by geographic area (in millions):
		Years ended December 31,
		2013		2012		2011
	Revenues
	U.S.	$	1,268.00	$	1,216.70	$	1,159.90
	Mexico	1,101.30		1,021.90		938.4
	Total revenues	$	2,369.30	$	2,238.60	$	2,098.30
		Years ended
		December 31,
		2013		2012
	Property and equipment (including concession assets), net
	U.S.	$	3,662.20	$	3,126.20
	Mexico	2,694.10		2,558.60
	Total property and equipment (including concession assets), net	$	6,356.30	$	5,684.80

Description_of_the_Business_De

Description of the Business (Details)	12 Months Ended
	Dec. 31, 2013
MSLLC [Member]	'
Description Of The Business [Line Items]	'
Ownership percentage of MSLLC	70.00%
PCRC [Member]	'
Description Of The Business [Line Items]	'
Equity investment ownership percentage	50.00%
Southern Capital [Member]	'
Description Of The Business [Line Items]	'
Equity investment ownership percentage	50.00%
FTVM [Member]	'
Description Of The Business [Line Items]	'
Equity investment ownership percentage	25.00%
PTC-220 [Member]	'
Description Of The Business [Line Items]	'
Equity investment ownership percentage	14.00%
KCSM [Member]	'
Description Of The Business [Line Items]	'
Initial percentage of gross revenue payable under railroad Concession to Mexican Government	0.50%
Initial period of time for payments due under railroad Concession to Mexican Government	'15 years
Date the percentage of revenue payable to the Mexican government increased under the Concession	24-Jun-12
Percentage of gross revenue payable under railroad Concession to Mexican Government after initial fifteen year period	1.25%
KCSM [Member] | Maximum [Member]	'
Description Of The Business [Line Items]	'
Additional Concession renewal period	'50 years
KCSR [Member] | Unionized Employees Concentration Risk [Member] | Number of Employees, Total [Member]	'
Description Of The Business [Line Items]	'
Percentage of employees covered by collective bargaining or labor agreements	80.00%
KCSM Servicios [Member] | Unionized Employees Concentration Risk [Member]	'
Description Of The Business [Line Items]	'
Term of labor agreement with Mexican Railroad Union	'50 years
KCSM Servicios [Member] | Unionized Employees Concentration Risk [Member] | Number of Employees, Total [Member]	'
Description Of The Business [Line Items]	'
Percentage of employees covered by collective bargaining or labor agreements	80.00%

Significant_Accounting_Policie2

Significant Accounting Policies (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Accounting Policies [Abstract]	'	'	'
Allowance for doubtful accounts	$4.20	$3.20	'
Bad debt expense	0.5	'	0.9
Accounts receivable allowance recovery	'	0.1	'
Goodwill	$13.20	$13.20	'

Earnings_Per_Share_Narrative_D

Earnings Per Share (Narrative) (Details)	3 Months Ended
	Mar. 31, 2011
Earnings Per Share [Abstract]	'
Shares issued from the conversion of convertible securities	6,999,887

Earnings_Per_Share_Reconciliat

Earnings Per Share Reconciliation (Details) (USD $)	3 Months Ended								12 Months Ended
In Millions, except Share data in Thousands, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Earnings Per Share [Abstract]	'	'	'	'	'	'	'	'	'	'	'
Net income available to common stockholders for purposes of computing basic earnings per share	'	'	'	'	'	'	'	'	$351.20	$377.10	$328.70
Effect of dividends on conversion of convertible preferred stock	'	'	'	'	'	'	'	'	0	0	1.3
Net income available to common stockholders for purposes of computing diluted earnings per share	'	'	'	'	'	'	'	'	$351.20	$377.10	$330
Weighted-average number of shares outstanding (in thousands):	'	'	'	'	'	'	'	'	'	'	'
Basic shares	'	'	'	'	'	'	'	'	109,973	109,712	108,208
Additional weighted average shares attributable to:	'	'	'	'	'	'	'	'	'	'	'
Convertible preferred stock	'	'	'	'	'	'	'	'	0	0	1,245
Stock options and nonvested shares	'	'	'	'	'	'	'	'	367	368	377
Diluted	'	'	'	'	'	'	'	'	110,340	110,080	109,830
Basic earnings per share	$1.03	$1.08	$0.14	$0.94	$0.84	$0.82	$1.10	$0.68	$3.19	$3.44	$3.04
Diluted earnings per share	$1.03	$1.07	$0.14	$0.94	$0.83	$0.82	$1.09	$0.68	$3.18	$3.43	$3

Earnings_Per_Share_Potentially

Earnings Per Share Potentially Dilutive Shares Excluded from the Calculation (Details) (Stock Options [Member])	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Stock Options [Member]	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'
Potentially dilutive shares excluded from the calculation	57	0	96

Property_and_Equipment_includi2

Property and Equipment (including Concession Assets) (Narrative) (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Property, Plant and Equipment [Line Items]	'	'	'
Accumulated amortization	$444.10	$402.70	'
Concession assets, net of accumulated amortization	1,951	1,893.90	'
Capitalized interest during period	1.1	0.9	1
Depreciation and amortization	$223.30	$198.80	$186.20

Property_and_Equipment_includi3

Property and Equipment (including Concession Assets) Schedule of Property and Equipment (including Concession Assets) (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012
Property, Plant and Equipment [Line Items]	'		'
Cost	$8,073.70		$7,281.40
Accumulated Depreciation	-1,717.40		-1,596.60
Net Book Value	6,356.30		5,684.80
Land [Member]	'		'
Property, Plant and Equipment [Line Items]	'		'
Cost	216.4		208.9
Accumulated Depreciation	0		0
Net Book Value	216.4		208.9
Concession land rights [Member]	'		'
Property, Plant and Equipment [Line Items]	'		'
Cost	141.2		141.2
Accumulated Depreciation	-20.9		-19.5
Net Book Value	120.3		121.7
Depreciation Rates	1.00%		1.00%
Road property [Member]	'		'
Property, Plant and Equipment [Line Items]	'		'
Cost	5,955.70		5,664.40
Accumulated Depreciation	-1,299		-1,234.30
Net Book Value	4,656.70		4,430.10
Depreciation Rates	2.70%		2.80%
Rail and other track material [Member]	'		'
Property, Plant and Equipment [Line Items]	'		'
Cost	1,617.80		1,509.90
Accumulated Depreciation	-341.1		-338.8
Net Book Value	1,276.70		1,171.10
Rail and other track material [Member] | Minimum [Member]	'		'
Property, Plant and Equipment [Line Items]	'		'
Depreciation Rates	1.80%		1.80%
Rail and other track material [Member] | Maximum [Member]	'		'
Property, Plant and Equipment [Line Items]	'		'
Depreciation Rates	3.10%		2.80%
Ties [Member]	'		'
Property, Plant and Equipment [Line Items]	'		'
Cost	1,425.10		1,343
Accumulated Depreciation	-303.7		-290.9
Net Book Value	1,121.40		1,052.10
Ties [Member] | Minimum [Member]	'		'
Property, Plant and Equipment [Line Items]	'		'
Depreciation Rates	2.00%		2.00%
Ties [Member] | Maximum [Member]	'		'
Property, Plant and Equipment [Line Items]	'		'
Depreciation Rates	4.30%		4.30%
Grading [Member]	'		'
Property, Plant and Equipment [Line Items]	'		'
Cost	829.6		827.8
Accumulated Depreciation	-129.7		-123.7
Net Book Value	699.9		704.1
Depreciation Rates	1.10%		1.10%
Bridges and tunnels [Member]	'		'
Property, Plant and Equipment [Line Items]	'		'
Cost	606.4		585.3
Accumulated Depreciation	-116.5		-110.7
Net Book Value	489.9		474.6
Depreciation Rates	1.20%		1.30%
Ballast [Member]	'		'
Property, Plant and Equipment [Line Items]	'		'
Cost	602.7		565.8
Accumulated Depreciation	-155.2		-137.6
Net Book Value	447.5		428.2
Ballast [Member] | Minimum [Member]	'		'
Property, Plant and Equipment [Line Items]	'		'
Depreciation Rates	2.60%		2.60%
Ballast [Member] | Maximum [Member]	'		'
Property, Plant and Equipment [Line Items]	'		'
Depreciation Rates	4.80%		4.80%
Other road property [Member]	'		'
Property, Plant and Equipment [Line Items]	'		'
Cost	874.1	[1]	832.6	[1]
Accumulated Depreciation	-252.8	[1]	-232.6	[1]
Net Book Value	621.3	[1]	600	[1]
Depreciation Rates	2.90%	[1]	3.10%	[1]
Equipment [Member]	'		'
Property, Plant and Equipment [Line Items]	'		'
Cost	1,436.20		962.6
Accumulated Depreciation	-286.2		-241.6
Net Book Value	1,150		721
Depreciation Rates	4.80%		5.10%
Locomotives [Member]	'		'
Property, Plant and Equipment [Line Items]	'		'
Cost	1,017.40		728.8
Accumulated Depreciation	-193.2		-155.6
Net Book Value	824.2		573.2
Depreciation Rates	5.00%		5.10%
Freight cars [Member]	'		'
Property, Plant and Equipment [Line Items]	'		'
Cost	362.2		196.4
Accumulated Depreciation	-78.9		-75.3
Net Book Value	283.3		121.1
Depreciation Rates	3.90%		4.50%
Other equipment [Member]	'		'
Property, Plant and Equipment [Line Items]	'		'
Cost	56.6		37.4
Accumulated Depreciation	-14.1		-10.7
Net Book Value	42.5		26.7
Depreciation Rates	7.40%		7.40%
Technology and other [Member]	'		'
Property, Plant and Equipment [Line Items]	'		'
Cost	152.8		148.1
Accumulated Depreciation	-111.3		-101.2
Net Book Value	41.5		46.9
Depreciation Rates	11.60%		12.70%
Construction in progress [Member]	'		'
Property, Plant and Equipment [Line Items]	'		'
Cost	171.4		156.2
Accumulated Depreciation	0		0
Net Book Value	$171.40		$156.20
[1]	Other includes signals, buildings and other road assets.

Other_Balance_Sheet_Captions_O

Other Balance Sheet Captions Other Current Assets (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Other Balance Sheet Captions [Abstract]	'	'
Refundable taxes	$40.70	$31.40
Prepaid expenses	17.7	16.6
Other	3.3	0.4
Other current assets	$61.70	$48.40

Other_Balance_Sheet_Captions_A

Other Balance Sheet Captions Accounts Payable and Accrued Liabilities (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
In Millions, unless otherwise specified
Other Balance Sheet Captions [Abstract]	'	'	'
Accounts payable	$200.50	$169.10	'
Accrued wages and vacation	72.7	71.2	'
Derailments, personal injury and other claim provisions	47.9	52.7	'
Dividends payable	23.8	0	0
Income and other taxes	18.5	28.7	'
Rents and leases payable	10.9	12.3	'
Interest payable	10.3	15.5	'
Other	14	15.1	'
Accounts payable and accrued liabilities	$398.60	$364.60	'

Fair_Value_Measurements_Detail

Fair Value Measurements (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Carrying value of company's debt	$2,188.90	$1,607.80
Fair Value, Inputs, Level 2 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair value of company's debt	2,082.90	1,719.90
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Fair value of interest rate swap liabilities	0.1	0.9
Fair value of foreign currency forward contract agreements	$0	$0

Derivative_Instruments_Narrati

Derivative Instruments (Narrative) (Details)

Dec. 31, 2013

Jun. 30, 2013

Jun. 30, 2013

Jun. 30, 2013

Jun. 30, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Mar. 31, 2012

Jun. 30, 2013

In Millions, unless otherwise specified

Designated as Hedging Instrument [Member]

Interest Rate Swaps [Member]

Foreign Currency Forward Contracts [Member]

Foreign Currency Forward Contracts [Member]

Foreign Currency Forward Contracts [Member]

Foreign Currency Forward Contracts [Member]

Foreign Currency Forward Contracts [Member]

Foreign Currency Forward Contracts [Member]

Foreign Currency Forward Contracts [Member]

KCSR [Member]

KCSR [Member]

KCSR [Member]

Cash Flow Hedging [Member]

Terminated Hedging Instrument [Member]

USD ($)

Not Designated as Hedging Instrument [Member]

Not Designated as Hedging Instrument [Member]

Not Designated as Hedging Instrument [Member]

Not Designated as Hedging Instrument [Member]

Offsetting Derivative Instrument [Member]

Offsetting Derivative Instrument [Member]

Interest Rate Swaps [Member]

Interest Rate Swaps [Member]

Interest Rate Swaps [Member]

USD ($)

Debt Retirement Costs [Member]

USD ($)

MXN

USD ($)

USD ($)

USD ($)

MXN

Designated as Hedging Instrument [Member]

Designated as Hedging Instrument [Member]

Terminated Hedging Instrument [Member]

USD ($)

Cash Flow Hedging [Member]

Cash Flow Hedging [Member]

USD ($)

USD ($)

USD ($)

Interest_Rate_Swaps

Derivative [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

Number of amortizing interest rate swaps entered into by the Company

'

'

'

'

'

'

'

'

'

'

4

'

Aggregate notional amount of derivative

'

'

$325

$325

4,202.30

$0

$0

$324.30

4,202.30

$151.10

$320

$140.80

Loss recognized by the Company as a result of the termination of interest rate swaps

'

-0.4

'

'

'

'

'

'

'

'

'

'

Amortizing interest rate swaps, fixed interest rate

'

'

'

'

'

'

'

'

'

0.49%

'

'

Derivative maturity date

'

'

'

31-Dec-13

31-Dec-13

'

'

31-Dec-13

31-Dec-13

31-Mar-14

'

'

Weighted average exchange rate of derivatives (in Ps per USD)

'

'

'

'

12.93

'

'

'

12.96

'

'

'

Net losses to be reclassified from accumulated other comprehensive loss into interest expense in the first quarter of 2014

($0.10)

'

'

'

'

'

'

'

'

'

'

'

Derivative_Instruments_Fair_Va

Derivative Instruments Fair Value of Derivative Instruments (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Derivatives, Fair Value [Line Items]	'	'
Derivative liabilities, fair value	$0.10	$0.90
Designated as Hedging Instrument [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Derivative liabilities, fair value	0.1	0.9
Designated as Hedging Instrument [Member] | Interest Rate Swaps [Member] | Accounts Payable and Accrued Liabilities [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Derivative liabilities, fair value	0.1	0
Designated as Hedging Instrument [Member] | Interest Rate Swaps [Member] | Other Noncurrent Liabilities and Deferred Credits [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Derivative liabilities, fair value	$0	$0.90

Derivative_Instruments_Derivat

Derivative Instruments Derivative Instruments Affecting the Consolidated Statements of Income (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member]	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Amount of Gain/(Loss) Recognized in OCI on Derivative (Effective Portion)	($0.20)	($1.60)	$0
Amount of Gain/(Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	-1	-0.7	-0.4
Amount of Gain/(Loss) Recognized in Income on Derivative (Ineffective Portion and Amount Excluded from Effectiveness Testing)	0	0	0
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Interest Rate Swaps [Member]	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Amount of Gain/(Loss) Recognized in OCI on Derivative (Effective Portion)	-0.2	-1.6	0
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Interest Rate Swaps [Member] | Interest Expense [Member]	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Amount of Gain/(Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	-0.6	-0.7	-0.4
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Interest Rate Swaps [Member] | Debt Retirement Costs [Member]	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Amount of Gain/(Loss) Reclassified from Accumulated OCI into Income (Effective Portion)	-0.4	0	0
Not Designated as Hedging Instrument [Member]	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Amount of Gain/(Loss) Recognized in Income on Derivative	-0.7	0	0
Not Designated as Hedging Instrument [Member] | Foreign Currency Forward Contracts [Member] | Foreign Exchange Gain (Loss) [Member]	'	'	'
Derivative Instruments, Gain (Loss) [Line Items]	'	'	'
Amount of Gain/(Loss) Recognized in Income on Derivative	($0.70)	$0	$0

LongTerm_Debt_Schedule_of_Long

Long-Term Debt Schedule of Long-Term Debt (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Debt Instrument [Line Items]	'	'
Long-term debt obligations	$2,171.70	'
Total	2,188.90	1,607.80
Less: Debt due within one year	332	60.2
Long-term debt	1,856.90	1,547.60
KCSR [Member] | Revolving Credit Facility [Member]	'	'
Debt Instrument [Line Items]	'	'
Long-term debt obligations	0	0
KCSR [Member] | Loans Payable [Member] | Term Loans [Member]	'	'
Debt Instrument [Line Items]	'	'
Long-term debt obligations	245.3	543.8
Variable interest rate	1.42%	'
KCSR [Member] | Secured Debt [Member] | RRIF Loan Agreement [Member]	'	'
Debt Instrument [Line Items]	'	'
Long-term debt obligations	52	53.5
KCSR [Member] | Senior Notes [Member] | 4.30% Senior Notes, Due 2043 [Member]	'	'
Debt Instrument [Line Items]	'	'
Long-term debt obligations	445.9	0
KCSR [Member] | Senior Notes [Member] | 3.85% Senior Notes, Due 2023 [Member]	'	'
Debt Instrument [Line Items]	'	'
Long-term debt obligations	199.7	0
KCSR [Member] | Capital Lease Obligations [Member]	'	'
Debt Instrument [Line Items]	'	'
Capital lease obligations	9.8	12.1
KCSR [Member] | Other Debt Obligations [Member]	'	'
Debt Instrument [Line Items]	'	'
Long-term debt obligations	0.4	0.4
Tex-Mex [Member] | Secured Debt [Member] | RRIF Loan Agreement [Member]	'	'
Debt Instrument [Line Items]	'	'
Long-term debt obligations	39.4	41
KCSM [Member] | Revolving Credit Facility [Member]	'	'
Debt Instrument [Line Items]	'	'
Long-term debt obligations	0	0
KCSM [Member] | Secured Debt [Member] | 5.737% Financing Agreement, Due 2023 [Member]	'	'
Debt Instrument [Line Items]	'	'
Long-term debt obligations	43.8	48.4
KCSM [Member] | Secured Debt [Member] | 6.195% Financing Agreement, Due 2023 [Member]	'	'
Debt Instrument [Line Items]	'	'
Long-term debt obligations	33.9	37.4
KCSM [Member] | Secured Debt [Member] | 9.310% Loan Agreements, Due 2020 [Member]	'	'
Debt Instrument [Line Items]	'	'
Long-term debt obligations	74.6	81.7
KCSM [Member] | Senior Notes [Member] | 12 1/2% Senior Notes [Member]	'	'
Debt Instrument [Line Items]	'	'
Long-term debt obligations	0	95
KCSM [Member] | Senior Notes [Member] | 8.0% Senior Notes, Due 2018 [Member]	'	'
Debt Instrument [Line Items]	'	'
Long-term debt obligations	62.3	296.9
KCSM [Member] | Senior Notes [Member] | 6 5/8% Senior Notes [Member]	'	'
Debt Instrument [Line Items]	'	'
Long-term debt obligations	0	185
KCSM [Member] | Senior Notes [Member] | 6 1/8% Senior Notes [Member]	'	'
Debt Instrument [Line Items]	'	'
Long-term debt obligations	0	200
KCSM [Member] | Senior Notes [Member] | 2.35% Senior Notes, Due 2020 [Member]	'	'
Debt Instrument [Line Items]	'	'
Long-term debt obligations	274.7	0
KCSM [Member] | Senior Notes [Member] | 3.0% Senior Notes, Due 2023 [Member]	'	'
Debt Instrument [Line Items]	'	'
Long-term debt obligations	448.2	0
KCSM [Member] | Senior Notes [Member] | Floating Rate Senior Notes, Due 2016 [Member]	'	'
Debt Instrument [Line Items]	'	'
Long-term debt obligations	250	0
Variable interest rate	0.94%	'
KCSM [Member] | Capital Lease Obligations [Member]	'	'
Debt Instrument [Line Items]	'	'
Capital lease obligations	7.4	9.8
KCSM [Member] | Other Debt Obligations [Member]	'	'
Debt Instrument [Line Items]	'	'
Long-term debt obligations	1.3	2.6
KCS [Member]	'	'
Debt Instrument [Line Items]	'	'
Long-term debt	0.2	0.2
KCS [Member] | Other Debt Obligations [Member]	'	'
Debt Instrument [Line Items]	'	'
Long-term debt obligations	$0.20	$0.20

LongTerm_Debt_KCSR_LongTerm_De

Long-Term Debt KCSR Long-Term Debt (Narrative) (Details) (KCSR [Member], USD $)

0 Months Ended

0 Months Ended

0 Months Ended

In Millions, unless otherwise specified

Apr. 29, 2013

Nov. 21, 2012

Jul. 12, 2011

Nov. 21, 2012

Nov. 21, 2012

Jun. 01, 2012

Feb. 24, 2012

Nov. 21, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2012

Jul. 12, 2011

Jul. 12, 2011

Jul. 12, 2011

Nov. 21, 2012

Nov. 21, 2012

Jun. 01, 2012

Apr. 29, 2013

Apr. 29, 2013

Apr. 29, 2013

Oct. 29, 2013

Oct. 29, 2013

Oct. 29, 2013

Feb. 21, 2012

Loans Payable [Member]

Loans Payable [Member]

Loans Payable [Member]

Loans Payable [Member]

Loans Payable [Member]

Loans Payable [Member]

Loans Payable [Member]

Loans Payable [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Secured Debt [Member]

Term Loan Facility [Member]

Term Loan Facility [Member]

Term Loan Facility [Member]

Term Loan Facility [Member]

Term Loan A-2 [Member]

Term Loan A-2 [Member]

Term Loan A-2 [Member]

Term Loan A-2 [Member]

Letter of Credit [Member]

2011 Credit Agreement [Member]

2011 Credit Agreement [Member]

2011 Credit Agreement [Member]

2012 Credit Agreement [Member]

2012 Credit Agreement [Member]

8.0% Senior Notes [Member]

4.30% Senior Notes, Due May 15, 2043 [Member]

4.30% Senior Notes, Due May 15, 2043 [Member]

4.30% Senior Notes, Due May 15, 2043 [Member]

3.85% Senior Notes, Due November 15, 2023 [Member]

3.85% Senior Notes, Due November 15, 2023 [Member]

3.85% Senior Notes, Due November 15, 2023 [Member]

RRIF Loan Agreement [Member]

London Interbank Offered Rate (LIBOR) [Member]

London Interbank Offered Rate (LIBOR) [Member]

Letter of Credit [Member]

Swing Line Facility [Member]

London Interbank Offered Rate (LIBOR) [Member]

Debt Instrument, Redemption, Period One [Member]

Debt Instrument, Redemption, Period Two [Member]

Debt Instrument, Redemption, Period One [Member]

Debt Instrument, Redemption, Period Two [Member]

locomotives

Maximum [Member]

Maximum [Member]

Debt Instrument [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Principal amount of debt

'

'

$300

'

'

$275

'

'

'

'

'

'

'

'

'

'

'

$450

'

'

$200

'

'

$54.60

Credit facility maximum borrowing capacity

'

'

'

'

'

'

'

'

'

'

'

200

25

15

'

'

'

'

'

'

'

'

'

'

Maximum aggregate principal amount available under additional advances

'

'

'

'

'

'

275

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amount borrowed of the Term Loan A-2

'

'

'

'

'

100

175

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt instrument, stated interest rate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

8.00%

4.30%

'

'

3.85%

'

'

2.96%

Debt instrument, maturity date

'

15-May-18

15-Jan-17

'

15-May-18

'

15-Jan-17

'

'

'

'

'

'

'

'

'

1-Jun-15

15-May-43

'

'

15-Nov-23

'

'

'

Margin KCSR would pay above the LIBOR

'

'

'

1.50%

'

'

'

1.25%

'

'

'

'

'

'

'

1.50%

'

'

'

'

'

'

'

'

Credit facility expiration date

'

'

'

'

'

'

'

'

'

'

'

15-Jul-16

'

'

15-Nov-17

'

'

'

'

'

'

'

'

'

Outstanding principal amount of the Term Loan Facility repaid

277.5

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amount available under the Revolving Facility

'

'

'

'

'

'

'

'

200

194.7

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Outstanding borrowings under the Revolving Facility

'

'

'

'

'

'

'

'

0

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Standby letter of credit amount issued and outstanding

'

'

'

'

'

'

'

'

'

'

5.3

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt instrument, discount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$4.10

'

'

$0.30

'

'

'

Debt instrument, yield to maturity

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

4.36%

'

'

3.87%

'

'

'

Date which Senior Notes are redeemable prior to, at KCSR's option, in whole or in part

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

15-Nov-42

'

'

15-Aug-23

'

'

Redemption price expressed as percent of principal amount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

100.00%

100.00%

'

100.00%

100.00%

'

Additional basis spread on U.S. Treasury rate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.25%

'

'

0.20%

'

'

Date on or after which Senior Notes may be redeemed at KCSR's option, in whole or in part

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

15-Nov-42

'

'

15-Aug-23

'

RRIF Loan term to maturity

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'25 years

Percentage of purchase price reimbursed

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

80.00%

Number of new locomotives acquired

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

30

LongTerm_Debt_TexMex_LongTerm_

Long-Term Debt Tex-Mex Long-Term Debt (Narrative) (Details) (Tex Mex [Member], Secured Debt [Member], RRIF Loan Agreement [Member], USD $)	0 Months Ended
In Millions, unless otherwise specified	Jun. 28, 2005
Tex Mex [Member] | Secured Debt [Member] | RRIF Loan Agreement [Member]	'
Debt Instrument [Line Items]	'
Principal amount of debt	$50
Debt instrument, stated interest rate	4.29%
Debt instrument, maturity date	13-Jul-30

LongTerm_Debt_KCSM_LongTerm_De

Long-Term Debt KCSM Long-Term Debt (Narrative) (Details) (KCSM [Member], USD $)

Dec. 31, 2013

Dec. 31, 2012

Aug. 30, 2010

Aug. 30, 2010

Aug. 30, 2010

Sep. 30, 2011

Sep. 30, 2011

Sep. 30, 2011

Nov. 29, 2012

Nov. 29, 2012

Apr. 02, 2013

Mar. 30, 2009

Dec. 31, 2010

Jan. 22, 2010

8-May-13

Jan. 29, 2014

Jan. 29, 2014

Jan. 22, 2010

Dec. 20, 2010

8-May-13

Dec. 31, 2013

Dec. 02, 2013

8-May-13

20-May-11

Nov. 30, 2013

3-May-13

3-May-13

3-May-13

3-May-13

3-May-13

3-May-13

Oct. 29, 2013

Oct. 29, 2013

Oct. 29, 2013

Feb. 26, 2008

Sep. 24, 2008

Sep. 01, 2011

In Millions, unless otherwise specified

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Senior Notes [Member]

Secured Debt [Member]

Secured Debt [Member]

Secured Debt [Member]

2010 Credit Agreement [Member]

2010 Credit Agreement [Member]

2010 Credit Agreement [Member]

2011 Credit Agreement [Member]

2011 Credit Agreement [Member]

2011 Credit Agreement [Member]

2012 Credit Agreement [Member]

2012 Credit Agreement [Member]

12 1/2% Senior Notes [Member]

12 1/2% Senior Notes [Member]

12 1/2% Senior Notes [Member]

KCSM 8.0% Senior Notes, Due February 1, 2018 [Member]

KCSM 8.0% Senior Notes, Due February 1, 2018 [Member]

KCSM 8.0% Senior Notes, Due February 1, 2018 [Member]

KCSM 8.0% Senior Notes, Due February 1, 2018 [Member]

9 3/8% Senior Notes [Member]

6 5/8% Senior Notes [Member]

6 5/8% Senior Notes [Member]

6 5/8% Senior Notes [Member]

6 1/8% Senior Notes [Member]

6 1/8% Senior Notes [Member]

6 1/8% Senior Notes [Member]

6 1/8% Senior Notes [Member]

2.35% Senior Notes, Due May 15, 2020 [Member]

2.35% Senior Notes, Due May 15, 2020 [Member]

2.35% Senior Notes, Due May 15, 2020 [Member]

3.0% Senior Notes, Due May 15, 2023 [Member]

3.0% Senior Notes, Due May 15, 2023 [Member]

3.0% Senior Notes, Due May 15, 2023 [Member]

Floating Rate Senior Notes, Due October 28, 2016 [Member]

Floating Rate Senior Notes, Due October 28, 2016 [Member]

Floating Rate Senior Notes, Due October 28, 2016 [Member]

5.737% Financing Agreement, Due February 28, 2023 [Member]

6.195% Financing Agreement, Due September 29, 2023 [Member]

9.310% Loan Agreements, Due December 15, 2020 [Member]

Letter of Credit Facility [Member]

Swing Line Facility [Member]

Letter of Credit Facility [Member]

Swing Line Facility [Member]

London Interbank Offered Rate (LIBOR) [Member]

Subsequent Event [Member]

Subsequent Event [Member]

Debt Instrument, Redemption, Period One [Member]

Debt Instrument, Redemption, Period Two [Member]

Debt Instrument, Redemption, Period One [Member]

Debt Instrument, Redemption, Period Two [Member]

Debt Instrument, Redemption, Period One [Member]

London Interbank Offered Rate (LIBOR) [Member]

locomotives

locomotives

trusts

Maximum [Member]

Debt Instrument, Redemption, Period One [Member]

payments

payments

agreements

locomotives

payments

Debt Instrument [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Credit facility term

'

'

'3 years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Credit facility maximum borrowing capacity

'

'

$100

$10

$10

$200

$15

$15

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Credit facility expiration date

'

'

'

'

'

30-Sep-16

'

'

15-Nov-17

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Margin KCSM would pay above the LIBOR

'

'

'

'

'

'

'

'

'

1.75%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.70%

'

'

'

Amount outstanding under the KCSM Revolving Facility

0

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Principal amount of debt

'

'

'

'

'

'

'

'

'

'

'

200

'

300

'

'

'

'

185

'

'

'

'

200

'

275

'

'

450

'

'

250

'

'

72.8

52.2

18.2

Debt instrument, stated interest rate

'

'

'

'

'

'

'

'

'

'

'

12.50%

'

8.00%

'

8.00%

'

9.38%

6.63%

'

'

'

'

6.13%

'

2.35%

'

'

3.00%

'

'

'

'

'

5.74%

6.20%

9.31%

Debt instrument, maturity date

'

'

'

'

'

'

'

'

'

'

'

1-Apr-16

'

1-Feb-18

'

'

'

1-May-12

15-Dec-20

'

'

'

'

15-Jun-21

'

15-May-20

'

'

15-May-23

'

'

28-Oct-16

'

'

28-Feb-23

29-Sep-23

15-Dec-20

Debt instrument, discount

'

'

'

'

'

'

'

'

'

'

'

11

'

4.3

'

'

'

'

'

'

'

'

'

'

'

0.3

'

'

1.9

'

'

'

'

'

'

'

'

Debt instrument, yield to maturity

'

'

'

'

'

'

'

'

'

'

'

13.75%

'

8.25%

'

'

'

'

'

'

'

'

'

'

'

2.37%

'

'

3.05%

'

'

'

'

'

'

'

'

Gross amount of debt purchased and redeemed

'

'

'

'

'

'

'

'

'

'

98.1

'

101.9

'

237.2

'

'

290

'

181

4

29.4

149.7

'

20.9

'

'

'

'

'

'

'

'

'

'

'

'

Redemption price expressed as percent of principal amount

'

'

'

'

'

'

'

'

'

'

106.25%

'

'

'

'

104.00%

104.00%

'

'

'

'

'

'

'

'

'

100.00%

100.00%

'

100.00%

100.00%

'

100.00%

'

'

'

'

Outstanding principal amount of the KCSM 8.0% Senior Notes

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

62.8

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Date on or after which Senior Notes may be redeemed

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1-Feb-14

'

'

'

'

'

'

'

'

'

'

15-Apr-20

'

'

15-Feb-23

'

'

'

'

'

'

Date which Senior Notes are redeemable prior to, at KCSM's option, in whole or in part

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

15-Apr-20

'

'

15-Feb-23

'

'

'

'

'

'

'

Additional basis spread on U.S. Treasury rate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.20%

'

'

0.20%

'

'

'

'

'

'

'

Percentage of purchase price financed

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

85.00%

80.00%

88.00%

Number of locomotives purchased

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

40

29

75

Debt instrument, number of principal payments

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

30

60

38

Debt instrument, amount of periodic principal payments

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$2.40

'

'

Debt instrument, number of loan agreements

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5

Debt instrument, number of irrevocable trusts

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5

LongTerm_Debt_Leases_and_Debt_

Long-Term Debt Leases and Debt Maturities (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012	Dec. 31, 2011
Schedule of Maturities of Long-term Debt, Capital Lease Obligations and Operating Leases [Line Items]	'		'	'
Rental expenses under operating leases	$106.70		$108.80	$120.60
Long-Term Debt	'		'	'
Long-Term Debt, Payments Due in 2014	327.9		'	'
Long-Term Debt, Payments Due in 2015	20.1		'	'
Long-Term Debt, Payments Due in 2016	270.8		'	'
Long-Term Debt, Payments Due in 2017	22		'	'
Long-Term Debt, Payments Due in 2018	35.2		'	'
Long-Term Debt, Payments Due Thereafter	1,495.70		'	'
Total Long-Term Debt	2,171.70		'	'
Capital Leases, Minimum Lease Payments	'		'	'
Capital Leases, Minimum Lease Payments Due in 2014	5		'	'
Capital Leases, Minimum Lease Payments Due in 2015	5		'	'
Capital Leases, Minimum Lease Payments Due in 2016	4.5		'	'
Capital Leases, Minimum Lease Payments Due in 2017	2.3		'	'
Capital Leases, Minimum Lease Payments Due in 2018	2.2		'	'
Capital Leases, Minimum Lease Payments Due Thereafter	1		'	'
Capital Leases, Minimum Lease Payments Total Due	20		'	'
Capital Leases, Minimum Interest Payments	'		'	'
Capital Leases, Minimum Interest Payments Due in 2014	0.9		'	'
Capital Leases, Minimum Interest Payments Due in 2015	0.8		'	'
Capital Leases, Minimum Interest Payments Due in 2016	0.6		'	'
Capital Leases, Minimum Interest Payments Due in 2017	0.3		'	'
Capital Leases, Minimum Interest Payments Due in 2018	0.2		'	'
Capital Leases, Minimum Interest Payments Due Thereafter	0		'	'
Capital Leases, Minimum Interest Payments Total Due	2.8		'	'
Capital Leases, Net Present Value	'		'	'
Capital Leases, Net Present Value Due in 2014	4.1		'	'
Capital Leases, Net Present Value Due in 2015	4.2		'	'
Capital Leases, Net Present Value Due in 2016	3.9		'	'
Capital Leases, Net Present Value Due in 2017	2		'	'
Capital Leases, Net Present Value Due in 2018	2		'	'
Capital Leases, Net Present Value Due Thereafter	1		'	'
Capital Leases, Net Present Value Total Due	17.2		'	'
Total Debt	'		'	'
Total Debt Due in 2014	332		'	'
Total Debt Due in 2015	24.3		'	'
Total Debt Due in 2016	274.7		'	'
Total Debt Due in 2017	24		'	'
Total Debt Due in 2018	37.2		'	'
Total Debt Due Thereafter	1,496.70		'	'
Total	2,188.90		1,607.80	'
Operating Leases, Minimum Lease Payments	'		'	'
Operating Leases, Minimum Lease Payments Due in 2014	99	[1]	'	'
Operating Leases, Minimum Lease Payments Due in 2015	86.5	[1]	'	'
Operating Leases, Minimum Lease Payments Due in 2016	76.4	[1]	'	'
Operating Leases, Minimum Lease Payments Due in 2017	63.4	[1]	'	'
Operating Leases, Minimum Lease Payments Due in 2018	43.2	[1]	'	'
Operating Leases, Minimum Lease Payments Due Thereafter	155.1	[1]	'	'
Operating Leases, Minimum Lease Payments Total Due	523.6	[1]	'	'
Southern Capital [Member]	'		'	'
Operating Leases, Minimum Lease Payments	'		'	'
Operating Leases, Minimum Lease Payments Due in 2014	8.5	[1]	'	'
Operating Leases, Minimum Lease Payments Due in 2015	8.3	[1]	'	'
Operating Leases, Minimum Lease Payments Due in 2016	8.3	[1]	'	'
Operating Leases, Minimum Lease Payments Due in 2017	8.3	[1]	'	'
Operating Leases, Minimum Lease Payments Due in 2018	8.3	[1]	'	'
Operating Leases, Minimum Lease Payments Due Thereafter	30.4	[1]	'	'
Operating Leases, Minimum Lease Payments Total Due	72.1	[1]	'	'
Third Party [Member]	'		'	'
Operating Leases, Minimum Lease Payments	'		'	'
Operating Leases, Minimum Lease Payments Due in 2014	90.5	[1]	'	'
Operating Leases, Minimum Lease Payments Due in 2015	78.2	[1]	'	'
Operating Leases, Minimum Lease Payments Due in 2016	68.1	[1]	'	'
Operating Leases, Minimum Lease Payments Due in 2017	55.1	[1]	'	'
Operating Leases, Minimum Lease Payments Due in 2018	34.9	[1]	'	'
Operating Leases, Minimum Lease Payments Due Thereafter	124.7	[1]	'	'
Operating Leases, Minimum Lease Payments Total Due	$451.50	[1]	'	'
[1]	During the fourth quarter of 2013, the Company initiated the Lease Conversion Program to purchase certain equipment under existing operating leases and to purchase replacement equipment as certain operating leases expire. Refer to Note 19 Subsequent Events for further information.

Income_Taxes_Schedule_of_Incom

Income Taxes Schedule of Income Tax Expense (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Current:	'	'	'
Federal	$6	$2.80	$0
State and local	1.9	0.7	0.7
Foreign	79.2	36.2	1.7
Total current	87.1	39.7	2.4
Deferred:	'	'	'
Federal	99	99.2	78
State and local	11.9	-7.4	4.5
Foreign	0.3	105.5	38.2
Total deferred	111.2	197.3	120.7
Income tax expense	$198.30	$237	$123.10

Income_Taxes_Schedule_of_Incom1

Income Taxes Schedule of Income Before Income Taxes (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]	'	'	'
U.S.	$319.20	$282.80	$231
Foreign	232.4	333.6	224
Income before income taxes	$551.60	$616.40	$455

Income_Taxes_Schedule_of_Defer

Income Taxes Schedule of Deferred Tax Assets and Liabilities (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Assets:	'	'
Loss carryovers	$52.60	$54.30
Book reserves not currently deductible for tax	94.3	77.1
Other	64.6	76.1
Gross deferred tax assets before valuation allowance	211.5	207.5
Valuation allowance	-3.4	-4.3
Net deferred tax assets	208.1	203.2
Liabilities:	'	'
Depreciation and amortization	-1,047.10	-925.5
Investments	-66.3	-73.8
Other	-7.7	-6
Gross deferred tax liabilities	-1,121.10	-1,005.30
Net deferred tax liability	($913)	($802.10)

Income_Taxes_Schedule_of_Effec

Income Taxes Schedule of Effective Income Tax Rate Reconciliation (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011		Jun. 30, 2013
							Foreign Currency Forward Contracts [Member]
Income Tax Reconciliation [Line Items]	'		'		'		'
Income tax expense using the statutory rate in effect	$193.10		$215.70		$159.30		'
Tax effect of:	'		'		'		'
Difference between U.S. and foreign tax rate	-15.4		-18.4		-14.5		'
Foreign exchange and inflation adjustments	4.7	[1]	42.3	[1]	-23.5	[1]	'
State and local income tax provision, net	8.9		8.4		7		'
Change in valuation allowances	-0.9		-11.2		-1.6		'
Tax credits	-4		-3.1		-2.3		'
Reversal of previously recognized benefit due to court ruling	4.4		0		0		'
Uncertain tax positions	-0.1		1.9		0		'
Other, net	7.6		1.4		-1.3		'
Income tax expense	198.3		237		123.1		'
U.S. federal statutory income tax rate	35.00%		35.00%		35.00%		'
Tax rate effect of:	'		'		'		'
Difference between U.S. and foreign tax rate	-2.80%		-3.00%		-3.20%		'
Foreign exchange and inflation adjustments	0.80%	[1]	6.90%	[1]	-5.20%	[1]	'
State and local income tax provision, net	1.60%		1.30%		1.50%		'
Change in valuation allowances	-0.20%		-1.80%		-0.40%		'
Tax credits	-0.70%		-0.50%		-0.50%		'
Reversal of previously recognized benefit due to court ruling	0.80%		0.00%		0.00%		'
Uncertain tax positions	0.00%		0.30%		0.00%		'
Other, net	1.40%		0.20%		-0.10%		'
Effective income tax rate	35.90%		38.40%		27.10%		'
Aggregate notional amount of foreign currency forward contracts	'		'		'		$325
[1]	Mexican income taxes paid in Mexico are paid in Mexican pesos, and as a result, the effective income tax rate reflects fluctuations in the value of the Mexican peso against the U.S. dollar. Most significantly, any gain or loss from the revaluation of net U.S. dollar-denominated monetary liabilities (primarily debt) into Mexican pesos is included in Mexican taxable income under Mexican tax law. As a result, a strengthening of the Mexican peso against the U.S. dollar for the reporting period will generally increase the Mexican cash tax obligation and the effective income tax rate, and a weakening of the Mexican peso against the U.S. dollar for the reporting period will generally decrease the Mexican cash tax obligation and the effective tax rate. To hedge its exposure to this risk, during the first half of 2013, the Company entered into foreign currency forward contracts with an aggregate notional amount of $325.0 million. The foreign currency forward contracts were measured at fair value each period and any change in fair value was recognized in foreign exchange gain (loss) within the consolidated statements of income. Refer to Note 7 Derivative Instruments for further information.

Income_Taxes_Uncertain_Tax_Pos

Income Taxes Uncertain Tax Positions (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Reconciliation of Unrecognized Tax Benefits [Rollforward]	'	'
Balance at January 1,	$3.60	$1.70
Additions based on tax positions related to the current year	0	0.9
Additions for tax positions of prior years	0	1
Reductions for tax positions of prior years	-0.1	0
Balance at December 31,	$3.50	$3.60

Income_Taxes_Narrative_Details

Income Taxes (Narrative) (Details) (USD $)

12 Months Ended

0 Months Ended

12 Months Ended

12 Months Ended

In Millions, unless otherwise specified

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 11, 2013

Dec. 11, 2013

Dec. 11, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Mexico Federal Tax [Member]

Mexico Federal Tax [Member]

Mexico Federal Tax [Member]

Mexico Federal Tax [Member]

Internal Revenue Service (IRS) [Member]

Internal Revenue Service (IRS) [Member]

Internal Revenue Service (IRS) [Member]

Internal Revenue Service (IRS) [Member]

State and Local Jurisdiction [Member]

State and Local Jurisdiction [Member]

State and Local Jurisdiction [Member]

Eliminated 2014 Tax Rate Reduction [Member]

Eliminated 2015 Tax Rate Reduction [Member]

Years 2013 And Forward [Member]

Track Maintenance Credits [Member]

Alternative Minimum Tax Credits [Member]

Maximum [Member]

Maximum [Member]

Minimum [Member]

Income Tax Disclosure [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amount the Company's book basis exceeded the tax basis of its foreign investments

$1,329.60

'

'

'

'

'

'

'

'

'

'

'

'

'

Gross federal income taxes the Company would incur if the earnings were to be remitted in a taxable transaction

465.4

'

'

'

'

'

'

'

'

'

'

'

'

'

Statutory income tax rate

35.00%

35.00%

35.00%

'

29.00%

28.00%

30.00%

'

'

'

'

'

'

'

Net operating loss carryforward, period

'

'

'

'

'

'

'

'

'

'

'20 years

'

'20 years

'5 years

Net operating loss carryforward, amount

'

'

'

108.5

'

'

'

7.1

'

'

'

437.1

'

'

Tax credit carryforward, amount

'

'

'

$6.20

'

'

'

$29.10

$23.10

$1.50

'

'

'

'

Stockholders_Equity_Capital_St

Stockholders' Equity Capital Stock Shares Authorized, Issued and Outstanding (Details)	Dec. 31, 2013	Dec. 31, 2012
Class of Stock [Line Items]	'	'
Common Stock, Shares Authorized	400,000,000	400,000,000
Common Stock, Shares Issued	123,352,185	123,352,185
Common Stock, Shares Outstanding	110,229,229	110,131,353
$25 Par Preferred Stock [Member]	'	'
Class of Stock [Line Items]	'	'
Preferred Stock, Shares Authorized	840,000	840,000
Preferred Stock, Shares Issued	649,736	649,736
Preferred Stock, Shares Outstanding	242,170	242,170
$1 Par Preferred Stock [Member]	'	'
Class of Stock [Line Items]	'	'
Preferred Stock, Shares Authorized	2,000,000	2,000,000
Preferred Stock, Shares Issued	0	0

Stockholders_Equity_Parentheti

Stockholders' Equity (Parenthetical) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Class of Stock [Line Items]	'	'	'
Common Stock, Par Value	$0.01	$0.01	'
$25 Par Preferred Stock [Member]	'	'	'
Class of Stock [Line Items]	'	'	'
Preferred Stock, Par Value	$25	$25	$25
Preferred Stock, Dividend Rate	4.00%	4.00%	'
$1 Par Preferred Stock [Member]	'	'	'
Class of Stock [Line Items]	'	'	'
Preferred Stock, Par Value	$1	$1	'

Stockholders_Equity_Treasury_S

Stockholders' Equity Treasury Stock (Details)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Equity, Class of Treasury Stock [Line Items]	'	'	'
Balance at beginning of year	13,220,832	13,441,328	13,703,453
Shares issued to fund stock option exercises	-54,209	-141,728	-158,440
Employee stock purchase plan shares issued	-42,391	-44,319	-59,390
Nonvested shares issued	-5,723	-56,136	-57,659
Nonvested shares forfeited	4,447	21,687	13,364
Balance at end of year	13,122,956	13,220,832	13,441,328

Stockholders_Equity_Narrative_

Stockholders' Equity (Narrative) (Details) (USD $)	3 Months Ended	0 Months Ended	12 Months Ended
	Mar. 31, 2011	Dec. 09, 2005	Dec. 31, 2011	Mar. 31, 2011
		Series D [Member]	Series D [Member]	Series D [Member]
Class of Stock [Line Items]	'	'	'	'
Preferred Stock, Shares Issued	'	210,000	'	'
Preferred Stock, Dividend Rate	'	5.13%	5.13%	'
Preferred Stock, Par Value	'	$1	$1	'
Shares of common stock issued upon conversion of one share of preferred stock	'	33.3333	'	'
Cumulative convertible perpetual preferred stock liquidation preference	'	$1,000	'	'
Remaining outstanding shares of the Series D Preferred Stock	'	'	'	209,995
Common stock issued for conversion of Series D cumulative convertible preferred stock	6,999,887	'	'	'

Stockholders_Equity_Accumulate

Stockholders' Equity Accumulated Other Comprehensive Loss (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Accumulated Other Comprehensive Income (Loss) [Roll Forward]	'	'	'
Balance	($2.40)	($2.20)	'
Other comprehensive income (loss) before reclassifications	-0.2	-0.5	'
Amounts reclassified from accumulated other comprehensive loss	0.6	0.3	'
Other comprehensive income (loss)	0.4	-0.2	-0.8
Balance	-2	-2.4	-2.2
Postemployment Benefits [Member]	'	'	'
Accumulated Other Comprehensive Income (Loss) [Roll Forward]	'	'	'
Balance	0.4	0.5	'
Other comprehensive income (loss) before reclassifications	0	0	'
Amounts reclassified from accumulated other comprehensive loss	-0.1	-0.1	'
Other comprehensive income (loss)	-0.1	-0.1	'
Balance	0.3	0.4	'
Foreign Currency Translation Adjustment [Member]	'	'	'
Accumulated Other Comprehensive Income (Loss) [Roll Forward]	'	'	'
Balance	-2.2	-2.7	'
Other comprehensive income (loss) before reclassifications	0	0.5	'
Amounts reclassified from accumulated other comprehensive loss	0	0	'
Other comprehensive income (loss)	0	0.5	'
Balance	-2.2	-2.2	'
Unrealized Loss on Cash Flow Hedges [Member]	'	'	'
Accumulated Other Comprehensive Income (Loss) [Roll Forward]	'	'	'
Balance	-0.6	0	'
Other comprehensive income (loss) before reclassifications	-0.2	-1	'
Amounts reclassified from accumulated other comprehensive loss	0.7	0.4	'
Other comprehensive income (loss)	0.5	-0.6	'
Balance	($0.10)	($0.60)	'

Stockholders_Equity_Significan

Stockholders' Equity Significant Reclassifications out of Accumulated Other Comprehensive Loss (Details) (USD $)

3 Months Ended

12 Months Ended

In Millions, unless otherwise specified

Dec. 31, 2013

Sep. 30, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Mar. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Interest expense

'

'

'

'

'

'

'

'

($80.60)

($100.40)

($129.10)

Debt retirement costs

'

'

-111.4

'

'

'

'

'

-119.2

-20.1

-38.7

Amortization of prior service credit

'

'

'

'

'

'

'

'

-441.6

-430.5

-423.8

Income before income taxes

'

'

'

'

'

'

'

'

551.6

616.4

455

Tax effect

'

'

'

'

'

'

'

'

-198.3

-237

-123.1

Net income

114.4

119

15.7

[1]

104.2

92.5

90.7

120.9

75.3

353.3

379.4

331.9

Reclassification out of Accumulated Other Comprehensive Income (Loss) [Member]

'

'

'

'

'

'

'

'

'

'

'

Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Net income

'

'

'

'

'

'

'

'

-0.6

-0.3

0

Unrealized Losses on Cash Flow Hedges [Member] | Reclassification out of Accumulated Other Comprehensive Income (Loss) [Member]

'

'

'

'

'

'

'

'

'

'

'

Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Interest expense

'

'

'

'

'

'

'

'

-0.6

-0.7

-0.4

Debt retirement costs

'

'

'

'

'

'

'

'

-0.4

0

0

Income before income taxes

'

'

'

'

'

'

'

'

-1

-0.7

-0.4

Tax effect

'

'

'

'

'

'

'

'

0.3

0.3

0.2

Net income

'

'

'

'

'

'

'

'

-0.7

-0.4

-0.2

Postemployment Benefits [Member] | Reclassification out of Accumulated Other Comprehensive Income (Loss) [Member]

'

'

'

'

'

'

'

'

'

'

'

Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Amortization of prior service credit

'

'

'

'

'

'

'

'

0.2

0.2

0.3

Income before income taxes

'

'

'

'

'

'

'

'

0.2

0.2

0.3

Tax effect

'

'

'

'

'

'

'

'

-0.1

-0.1

-0.1

Net income

'

'

'

'

'

'

'

'

$0.10

$0.10

$0.20

[1]

During the second quarter of 2013, the Company recognized pre-tax $111.4 million of debt retirement costs related to debt restructuring activities that occurred during the period.

Stockholders_Equity_Cash_Divid

Stockholders' Equity Cash Dividends on Common Stock (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Equity [Abstract]	'	'	'
Cash dividends declared per common share	$0.86	$0.78	$0

ShareBased_Compensation_Narrat

Share-Based Compensation (Narrative) (Details) (Stock Option and Performance Award Plan 2008 [Member])	Dec. 31, 2013
In Millions, unless otherwise specified
Stock Option and Performance Award Plan 2008 [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Number of shares authorized	2.3

ShareBased_Compensation_Stock_

Share-Based Compensation, Stock Options (Details) (USD $)	12 Months Ended
In Millions, except Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]	'	'	'
Exercised, number of shares	-54,209	-141,728	-158,440
Employee Stock Option [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Contractual term (years)	'P10Y	'	'
Expected dividend yield	0.88%	0.00%	0.00%
Expected volatility	46.12%	46.59%	45.40%
Risk-free interest rate	1.11%	0.46%	1.29%
Expected term (years)	'6 years	'6 years	'6 years
Weighted-average grant date fair value of stock options granted	40.05	29.45	23.39
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]	'	'	'
Options outstanding, number of shares, beginning of period	368,071	'	'
Options, weighted-average exercise price per share, beginning of period	43.67	'	'
Granted, number of shares	57,406	'	'
Granted, weighted-average exercise price	97.77	'	'
Exercised, number of shares	-61,845	'	'
Exercised, weighted-average exercise price per share	27.28	'	'
Forfeited or expired, number of shares	-873	'	'
Forfeited or expired, weighted-average exercise price per share	77.83	'	'
Options outstanding, number of shares, end of period	362,759	368,071	'
Options, weighted-average exercise price per share, end of period	54.94	43.67	'
Options outstanding, weighted-average remaining contractual term	'7 years	'	'
Options outstanding, aggregate intrinsic value	25	'	'
Vested and expected to vest, number of shares	359,410	'	'
Vested and expected to vest, weighted-average exercise price per share	54.76	'	'
Vested and expected to vest, weighted-average remaining contractual term	'6 years 11 months 23 days	'	'
Vested and expected to vest, aggregate intrinsic value	24.8	'	'
Exercisable, number of shares	228,457	'	'
Exercisable, weighted-average exercise price per share	42.56	'	'
Exercisable, weighted-average remaining contractual term	'6 years 2 months 23 days	'	'
Exercisable, aggregate intrinsic value	18.6	'	'
Compensation expense	2.4	1.8	2.2
Income tax benefit recognized in the income statement	0.9	0.7	0.8
Aggregate grant-date fair value of stock options vested	1.8	1.3	1.1
Intrinsic value of stock options exercised	5	12.1	9.5
Cash received from option exercises	1.5	1.9	2.1
Tax benefit realized from options exercised during the annual period	1.9	4.6	0.2
Unrecognized compensation cost relating to nonvested stock options	1.2	'	'
Unrecognized compensation cost weighted-average period of recognition	'12 months	'	'
Shares available for future grants	1,163,118	'	'
Minimum [Member] | Employee Stock Option [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Vesting Period	'3 years	'	'
Maximum [Member] | Employee Stock Option [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Vesting Period	'5 years	'	'

ShareBased_Compensation_Nonves

Share-Based Compensation, Nonvested Stock (Details) (USD $)	12 Months Ended
In Millions, except Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]	'	'	'
Forfeited, number of shares	-4,447	-21,687	-13,364
Nonvested Stock [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]	'	'	'
Nonvested stock, number of shares, beginning of period	278,967	'	'
Nonvested stock, weighted-average grant date fair value, beginning of period	49.37	'	'
Granted, number of shares	46,031	'	'
Granted, weighted-average grant date fair value	103.38	70.98	54.74
Vested, number of shares	-118,491	'	'
Vested, weighted-average grant date fair value	47.25	'	'
Forfeited, number of shares	-4,447	'	'
Forfeited, weighted-average grant date fair value	45.65	'	'
Nonvested stock, number of shares, end of period	202,060	278,967	'
Nonvested stock, weighted-average grant date fair value, end of period	63	49.37	'
Nonvested stock, aggregate intrinsic value	25	'	'
Shares vested, fair value	12.2	7.8	9.9
Compensation expense	5.6	4.4	4.7
Income tax benefit recognized in the income statement	2.1	1.6	1.7
Unrecognized compensation cost relating to nonvested stock	6	'	'
Unrecognized compensation cost weighted-average period of recognition	'1 year 5 months 1 day	'	'
Nonvested Stock [Member] | Minimum [Member] | Employee [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Vesting Period	'3 years	'	'
Nonvested Stock [Member] | Maximum [Member] | Employee [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Vesting Period	'5 years	'	'

ShareBased_Compensation_Perfor

Share-Based Compensation, Performance Based Awards (Details) (USD $)	12 Months Ended
In Millions, except Share data, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]	'		'		'
Forfeited, number of shares	-4,447		-21,687		-13,364
Performance Based Awards [Member]	'		'		'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'		'		'
Requisite service period	'3 years		'		'
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]	'		'		'
Nonvested stock, number of shares, beginning of period	108,579	[1]	'		'
Nonvested stock, weighted-average grant date fair value, beginning of period	60.54		'		'
Granted, number of shares	71,471	[1]	'		'
Granted, weighted-average grant date fair value	82.34		62.81		52.66
Vested, number of shares	0	[1]	'		'
Vested, weighted-average grant date fair value	0		'		'
Forfeited, number of shares	-1,164	[1]	'		'
Forfeited, weighted-average grant date fair value	69.95		'		'
Nonvested stock, number of shares, end of period	178,886	[1]	108,579	[1]	'
Nonvested stock, weighted-average grant date fair value, end of period	69.19		60.54		'
Compensation expense	5.1		4		1.2
Income tax benefit recognized in the income statement	1.9		1.5		0.4
Unrecognized compensation cost relating to nonvested stock	3.5		'		'
Unrecognized compensation cost weighted-average period of recognition	'10 months 18 days		'		'
Performance Based Awards [Member] | Minimum [Member]	'		'		'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'		'		'
Performance based award, earned percentage	0.00%		'		'
Performance Based Awards [Member] | Maximum [Member]	'		'		'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'		'		'
Performance based award, earned percentage	200.00%		'		'
2011 Awards [Member] | Performance Based Awards [Member]	'		'		'
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]	'		'		'
Earned shares	118,839		'		'
2012 Awards [Member] | Performance Based Awards [Member]	'		'		'
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]	'		'		'
Maximum number of shares	118,558		'		'
2013 Awards [Member] | Performance Based Awards [Member]	'		'		'
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]	'		'		'
Maximum number of shares	93,414		'		'
[1]	* For the 2013 Awards and the 2012 Awards, participants in the aggregate can earn up to a maximum of 93,414 and 118,558 shares, respectively. For the 2011 Awards, the performance shares earned were 118,839.

ShareBased_Compensation_Employ

Share-Based Compensation, Employee Stock Purchase Plan (Details) (USD $)

12 Months Ended

6 Months Ended

In Millions, except Share data, unless otherwise specified

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Jun. 30, 2011

Dec. 31, 2011

Jun. 30, 2012

Dec. 31, 2012

Jun. 30, 2013

Dec. 31, 2013

Employee Stock [Member]

Employee Stock [Member]

Employee Stock [Member]

January 2011 offering ESPP [Member]

July 2011 offering ESPP [Member]

January 2012 offering ESPP [Member]

July 2012 offering ESPP [Member]

January 2013 offering ESPP [Member]

July 2013 offering ESPP [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

Number of shares authorized

'

'

'

4,000,000

'

'

'

'

'

'

'

'

Maximum employee contribution rate

'

'

'

5.00%

'

'

'

'

'

'

'

'

Employee stock purchase plan, purchase price

'

'

'

90.00%

'

'

'

'

'

'

'

'

Exercised, purchase price

'

'

'

'

'

'

$43.76

$54.55

$61.84

$61.73

$77.53

$97.58

Exercised, shares issued

42,391

44,319

59,390

'

'

'

27,170

22,760

21,559

23,099

19,292

16,376

Proceeds received from employees

'

'

'

'

'

'

$1.20

[1]

$1.20

[1]

$1.30

[1]

$1.40

[1]

$1.50

[1]

$1.60

[1]

Expected dividend yield

'

'

'

0.90%

0.59%

0.00%

'

'

'

'

'

'

Expected volatility

'

'

'

18.30%

28.97%

22.72%

'

'

'

'

'

'

Risk-free interest rate

'

'

'

0.13%

0.14%

0.18%

'

'

'

'

'

'

Expected term (years)

'

'

'

'6 months

'6 months

'6 months

'

'

'

'

'

'

Weighted-average grant date fair value

'

'

'

$14.48

$12.40

$8.87

'

'

'

'

'

'

Compensation expense

'

'

'

$0.50

$0.50

$0.40

'

'

'

'

'

'

Shares available for future grants

'

'

'

3,800,000

'

'

'

'

'

'

'

'

[1]

Represents amounts received from employees through payroll deductions for share purchases under applicable offering.

Postemployment_Benefits_Narrat

Postemployment Benefits (Narrative) (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Multi Employer Plan [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Multiemployer Plan, Period Contributions	$3.90	$4.30	$4.60
401(k) and Profit Sharing Plan [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Defined Contribution Plan, Maximum Company Contribution Rate	5.00%	'	'
Defined Contribution Plan, Cost Recognized	$2.50	$2.30	$2.20

Postemployment_Benefits_Compon

Postemployment Benefits Components of Net Benefits and Costs (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2005
							years
Health and Welfare [Member]	'		'		'		'
Postemployment and Other Postretirement Benefit Plans [Line Items]	'		'		'		'
Service cost	$0.10		$0.10		$0.10		'
Interest cost	0.2		0.2		0.3		'
Actuarial (gain) loss	-0.9	[1]	0.1	[1]	1.6	[1]	'
Foreign currency (gain) loss	0		0		0		'
Prior service credit	-0.2	[2]	-0.2	[2]	-0.2	[2]	'
Net periodic cost (benefit) recognized	-0.8		0.2		1.8		'
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), Net Prior Service Cost (Credit), before Tax	'		'		'		2.3
Defined Benefit Plan, Amortization of Prior Service Amortization Period	'		'		'		9.5
Postemployment Benefits [Member]	'		'		'		'
Postemployment and Other Postretirement Benefit Plans [Line Items]	'		'		'		'
Service cost	0.9		0.9		0.9		'
Interest cost	0.9		0.8		0.9		'
Actuarial (gain) loss	-1	[1]	3.1	[1]	0.8	[1]	'
Foreign currency (gain) loss	-0.1		0.6		-1.4		'
Prior service credit	0		0		0		'
Net periodic cost (benefit) recognized	$0.70		$5.40		$1.20		'
[1]	Net benefit costs above do not include a component for the amortization of actuarial gains or losses as the Company’s policy is to recognize such gains and losses immediately.
[2]	During 2005, the Company revised its medical plan to exclude prescription drug coverage available under Medicare part D. This negative plan amendment generated an unrecognized prior service benefit of $2.3 million which is being amortized over the estimated remaining life of the affected participants of 9.5 years.

Postemployment_Benefits_Change

Postemployment Benefits Change in Benefit Obligation (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Health and Welfare [Member]	'		'		'
Benefit Plan, Change In Benefit Obligation [Roll Forward]	'		'		'
Benefit obligation at beginning of year	$6.50		$6.40		'
Service cost	0.1		0.1		0.1
Interest cost	0.2		0.2		0.3
Actuarial (gain) loss	-0.9	[1]	0.1	[1]	1.6	[1]
Foreign currency (gain) loss	0		0		0
Benefits paid, net of retiree contributions	-0.4		-0.3		'
Benefit obligation at end of year	5.5		6.5		6.4
Funded status	-5.5		-6.5		'
Postemployment Benefits [Member]	'		'		'
Benefit Plan, Change In Benefit Obligation [Roll Forward]	'		'		'
Benefit obligation at beginning of year	13.2		10		'
Service cost	0.9		0.9		0.9
Interest cost	0.9		0.8		0.9
Actuarial (gain) loss	-1	[1]	3.1	[1]	0.8	[1]
Foreign currency (gain) loss	-0.1		0.6		-1.4
Benefits paid, net of retiree contributions	-1.1		-2.2		'
Benefit obligation at end of year	12.8		13.2		10
Funded status	($12.80)		($13.20)		'
[1]	Net benefit costs above do not include a component for the amortization of actuarial gains or losses as the Company’s policy is to recognize such gains and losses immediately.

Postemployment_Benefits_Weight

Postemployment Benefits Weighted Average Assumptions Used for Benefit Obligations (Details)	Dec. 31, 2013	Dec. 31, 2012
Health and Welfare [Member]	'	'
Postemployment and Other Postretirement Benefit Plans [Line Items]	'	'
Discount rate	4.50%	3.50%
Postemployment Benefits [Member]	'	'
Postemployment and Other Postretirement Benefit Plans [Line Items]	'	'
Discount rate	8.25%	6.75%
Rate of compensation increase	4.50%	4.50%

Postemployment_Benefits_Weight1

Postemployment Benefits Weighted Average Assumptions Used for Benefit Costs (Details)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Health and Welfare [Member]	'	'
Postemployment and Other Postretirement Benefit Plans [Line Items]	'	'
Discount rate	3.50%	4.00%
Postemployment Benefits [Member]	'	'
Postemployment and Other Postretirement Benefit Plans [Line Items]	'	'
Discount rate	6.75%	8.00%
Rate of compensation increase	4.50%	4.50%

Postemployment_Benefits_Assume

Postemployment Benefits Assumed Health Care Cost Trends (Details)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	'	'	'
Health care trend rate for next year	6.50%	8.00%	8.50%
Ultimate trend rate	5.00%	5.00%	5.00%
Year that rate reaches ultimate rate	'2023	'2029	'2020

Postemployment_Benefits_Expect

Postemployment Benefits Expected Benefit Payments (Details) (USD $)	Dec. 31, 2013
In Millions, unless otherwise specified
Health and Welfare [Member]	'
Postemployment and Other Postretirement Benefit Plans [Line Items]	'
2014	$0.60
2015	0.5
2016	0.5
2017	0.4
2018	0.4
2019-2023	1.8
Postemployment Benefits [Member]	'
Postemployment and Other Postretirement Benefit Plans [Line Items]	'
2014	0.7
2015	0.8
2016	0.9
2017	0.9
2018	1
2019-2023	$6.30

Commitments_and_Contingencies_1

Commitments and Contingencies (Narrative) (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Financial Guarantee [Member]	'	'	'
Loss Contingencies [Line Items]	'	'	'
Letters of credit outstanding, amount	$5.30	'	'
Percent guarantee of unconsolidated affiliate debt	50.00%	'	'
KCSM [Member]	'	'	'
Loss Contingencies [Line Items]	'	'	'
Initial percentage of gross revenue payable under railroad Concession to Mexican government	0.50%	'	'
Initial period of time for payments due under railroad Concession to Mexican government	'15 years	'	'
Date the percentage of revenue payable to the Mexican government increased under the Concession	24-Jun-12	'	'
Percentage of gross revenue payable under railroad Concession to Mexican government after initial fifteen year period	1.25%	'	'
KCSM [Member] | Materials and Other Expense [Member]	'	'	'
Loss Contingencies [Line Items]	'	'	'
Concession duty expense	$14.30	$9.40	$4.90
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	1-Nov-26	'	'

Commitments_and_Contingencies_2

Commitments and Contingencies Personal Injury Liability Activity (Details) (Personal Injury [Member], USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Personal Injury [Member]	'	'
Personal Injury Liability Activity [Roll Forward]	'	'
Balance at beginning of year	$34.40	$40.10
Accruals	8.8	10
Change in estimate	1.3	-8.4
Payments	-13.3	-7.3
Balance at end of year	$31.20	$34.40

Elimination_of_Deferred_Statut1

Elimination of Deferred Statutory Profit Sharing Liability, Net (Details) (USD $)	3 Months Ended	12 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Restructuring and Related Activities [Line Items]	'	'	'	'
Net reduction to operating expense as a result of the organizational restructuring	$43	$0	$43	$0
Elimination of deferred Mexican statutory profit sharing liability	'	0	47.8	0
KCSM [Member] | Organizational Restructuring [Member]	'	'	'	'
Restructuring and Related Activities [Line Items]	'	'	'	'
Net reduction to operating expense as a result of the organizational restructuring	43	'	'	'
Elimination of deferred Mexican statutory profit sharing liability	47.8	'	'	'
Transaction costs of organizational restructuring	$4.80	'	'	'

Insurance_Recoveries_Details

Insurance Recoveries (Details) (USD $)	12 Months Ended			3 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Sep. 30, 2011
				Hurricane Alex [Member]
Unusual or Infrequent Item [Line Items]	'	'	'	'
Gain on insurance recoveries related to hurricane damage	$0	$0	$25.60	$25.60

Quarterly_Financial_Data_Unaud2

Quarterly Financial Data (Unaudited) (Details) (USD $)	3 Months Ended										12 Months Ended
In Millions, except Per Share data, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013		Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012		Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Quarterly Financial Data [Abstract]	'	'	'		'	'	'	'		'	'	'	'
Revenues	$615.60	$621.60	$579.30		$552.80	$568.40	$577.40	$545.30		$547.50	$2,369.30	$2,238.60	$2,098.30
Operating income	196.1	200.3	179.3		162.9	173.6	180.7	203.8	[1]	157.8	738.6	715.9	611.6
Net income	114.4	119	15.7	[2]	104.2	92.5	90.7	120.9		75.3	353.3	379.4	331.9
Net income attributable to Kansas City Southern and subsidiaries	113.8	118.4	15.4	[2]	103.8	91.8	90.1	120.4		75	351.4	377.3	330.3
Per share data:	'	'	'		'	'	'	'		'	'	'	'
Basic earnings per common share	$1.03	$1.08	$0.14		$0.94	$0.84	$0.82	$1.10		$0.68	$3.19	$3.44	$3.04
Diluted earnings per common share	$1.03	$1.07	$0.14		$0.94	$0.83	$0.82	$1.09		$0.68	$3.18	$3.43	$3
Debt retirement costs	'	'	-111.4		'	'	'	'		'	-119.2	-20.1	-38.7
Elimination of deferred statutory profit sharing liability, net	'	'	'		'	'	'	$43		'	$0	$43	$0
[1]	During the second quarter of 2012, the Company recognized a pre-tax gain of $43.0 million within operating expenses for the elimination of deferred statutory profit sharing liability, net as a result of the organizational restructuring during the period.
[2]	During the second quarter of 2013, the Company recognized pre-tax $111.4 million of debt retirement costs related to debt restructuring activities that occurred during the period.

Condensed_Consolidating_Financ2

Condensed Consolidating Financial Information (Narrative) (Details) (KCSR [Member], Senior Notes [Member], USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013
4.30% Senior Notes, Due May 15, 2043 [Member]	'
Condensed Financial Statements, Captions [Line Items]	'
Outstanding principal amount of the Senior Notes	$450
Stated interest rate on Senior Notes	4.30%
Maturity date on Senior Notes	15-May-43
3.85% Senior Notes, Due November 15, 2023 [Member]	'
Condensed Financial Statements, Captions [Line Items]	'
Outstanding principal amount of the Senior Notes	$200
Stated interest rate on Senior Notes	3.85%
Maturity date on Senior Notes	15-Nov-23

Condensed_Consolidating_Statem

Condensed Consolidating Statements of Comprehensive Income (Details) (USD $)

3 Months Ended

12 Months Ended

In Millions, unless otherwise specified

Dec. 31, 2013

Sep. 30, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Mar. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Condensed Income Statements, Captions [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Revenues

$615.60

$621.60

$579.30

$552.80

$568.40

$577.40

$545.30

$547.50

$2,369.30

$2,238.60

$2,098.30

Operating expenses

'

'

'

'

'

'

'

'

1,630.70

1,522.70

1,486.70

Operating income

196.1

200.3

179.3

162.9

173.6

180.7

203.8

[1]

157.8

738.6

715.9

611.6

Equity in net earnings of unconsolidated affiliates

'

'

'

'

'

'

'

'

18.8

19.3

18.2

Interest expense

'

'

'

'

'

'

'

'

-80.6

-100.4

-129.1

Debt retirement costs

'

'

-111.4

'

'

'

'

'

-119.2

-20.1

-38.7

Foreign exchange gain (loss)

'

'

'

'

'

'

'

'

-5.2

2.7

-9.2

Other income (expense), net

'

'

'

'

'

'

'

'

-0.8

-1

2.2

Income before income taxes

'

'

'

'

'

'

'

'

551.6

616.4

455

Income tax expense (benefit)

'

'

'

'

'

'

'

'

198.3

237

123.1

Net income

114.4

119

15.7

[2]

104.2

92.5

90.7

120.9

75.3

353.3

379.4

331.9

Less: Net income attributable to noncontrolling interest

'

'

'

'

'

'

'

'

1.9

2.1

1.6

Net income attributable to Kansas City Southern and subsidiaries

113.8

118.4

15.4

[2]

103.8

91.8

90.1

120.4

75

351.4

377.3

330.3

Other comprehensive income (loss)

'

'

'

'

'

'

'

'

0.4

-0.2

-0.8

Comprehensive income attributable to Kansas City Southern and subsidiaries

'

'

'

'

'

'

'

'

351.8

377.1

329.5

Parent [Member]

'

'

'

'

'

'

'

'

'

'

'

Condensed Income Statements, Captions [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Revenues

'

'

'

'

'

'

'

'

0

0

0

Operating expenses

'

'

'

'

'

'

'

'

4.8

4.2

4

Operating income

'

'

'

'

'

'

'

'

-4.8

-4.2

-4

Equity in net earnings of unconsolidated affiliates

'

'

'

'

'

'

'

'

318.3

218.9

309.2

Interest expense

'

'

'

'

'

'

'

'

-0.1

-0.1

-0.1

Debt retirement costs

'

'

'

'

'

'

'

'

0

0

0

Foreign exchange gain (loss)

'

'

'

'

'

'

'

'

0

0

0

Other income (expense), net

'

'

'

'

'

'

'

'

44.6

46.5

39.7

Income before income taxes

'

'

'

'

'

'

'

'

358

261.1

344.8

Income tax expense (benefit)

'

'

'

'

'

'

'

'

17.6

8.4

14.5

Net income

'

'

'

'

'

'

'

'

340.4

252.7

330.3

Less: Net income attributable to noncontrolling interest

'

'

'

'

'

'

'

'

0

0

0

Net income attributable to Kansas City Southern and subsidiaries

'

'

'

'

'

'

'

'

340.4

252.7

330.3

Other comprehensive income (loss)

'

'

'

'

'

'

'

'

0.4

-0.2

-0.8

Comprehensive income attributable to Kansas City Southern and subsidiaries

'

'

'

'

'

'

'

'

340.8

252.5

329.5

KCSR [Member]

'

'

'

'

'

'

'

'

'

'

'

Condensed Income Statements, Captions [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Revenues

'

'

'

'

'

'

'

'

1,115

1,079.70

1,030.60

Operating expenses

'

'

'

'

'

'

'

'

829.6

805

765.5

Operating income

'

'

'

'

'

'

'

'

285.4

274.7

265.1

Equity in net earnings of unconsolidated affiliates

'

'

'

'

'

'

'

'

1.1

2.6

2.6

Interest expense

'

'

'

'

'

'

'

'

-68.5

-65

-88.8

Debt retirement costs

'

'

'

'

'

'

'

'

-1.5

-19.6

-28.4

Foreign exchange gain (loss)

'

'

'

'

'

'

'

'

-1.3

0

0

Other income (expense), net

'

'

'

'

'

'

'

'

5.1

11.7

5.4

Income before income taxes

'

'

'

'

'

'

'

'

220.3

204.4

155.9

Income tax expense (benefit)

'

'

'

'

'

'

'

'

81.2

74.4

55.5

Net income

'

'

'

'

'

'

'

'

139.1

130

100.4

Less: Net income attributable to noncontrolling interest

'

'

'

'

'

'

'

'

0

0

0

Net income attributable to Kansas City Southern and subsidiaries

'

'

'

'

'

'

'

'

139.1

130

100.4

Other comprehensive income (loss)

'

'

'

'

'

'

'

'

0.5

-0.6

0.2

Comprehensive income attributable to Kansas City Southern and subsidiaries

'

'

'

'

'

'

'

'

139.6

129.4

100.6

Guarantor Subsidiaries [Member]

'

'

'

'

'

'

'

'

'

'

'

Condensed Income Statements, Captions [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Revenues

'

'

'

'

'

'

'

'

42.6

29.9

24

Operating expenses

'

'

'

'

'

'

'

'

39

34

27.5

Operating income

'

'

'

'

'

'

'

'

3.6

-4.1

-3.5

Equity in net earnings of unconsolidated affiliates

'

'

'

'

'

'

'

'

6.3

6.6

5.7

Interest expense

'

'

'

'

'

'

'

'

0.1

0

0

Debt retirement costs

'

'

'

'

'

'

'

'

0

0

0

Foreign exchange gain (loss)

'

'

'

'

'

'

'

'

0

0

0

Other income (expense), net

'

'

'

'

'

'

'

'

-0.1

0

0.1

Income before income taxes

'

'

'

'

'

'

'

'

9.9

2.5

2.3

Income tax expense (benefit)

'

'

'

'

'

'

'

'

2.9

-0.2

-0.7

Net income

'

'

'

'

'

'

'

'

7

2.7

3

Less: Net income attributable to noncontrolling interest

'

'

'

'

'

'

'

'

1.9

2.1

1.6

Net income attributable to Kansas City Southern and subsidiaries

'

'

'

'

'

'

'

'

5.1

0.6

1.4

Other comprehensive income (loss)

'

'

'

'

'

'

'

'

0

0

0

Comprehensive income attributable to Kansas City Southern and subsidiaries

'

'

'

'

'

'

'

'

5.1

0.6

1.4

Non-Guarantor Subsidiaries [Member]

'

'

'

'

'

'

'

'

'

'

'

Condensed Income Statements, Captions [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Revenues

'

'

'

'

'

'

'

'

1,251.90

1,164.70

1,074.70

Operating expenses

'

'

'

'

'

'

'

'

800.1

717.7

723.2

Operating income

'

'

'

'

'

'

'

'

451.8

447

351.5

Equity in net earnings of unconsolidated affiliates

'

'

'

'

'

'

'

'

15.7

15.5

14.9

Interest expense

'

'

'

'

'

'

'

'

-59.3

-88.2

-80.7

Debt retirement costs

'

'

'

'

'

'

'

'

-117.7

-0.5

-10.3

Foreign exchange gain (loss)

'

'

'

'

'

'

'

'

-3.9

2.7

-9.2

Other income (expense), net

'

'

'

'

'

'

'

'

-0.6

-128.5

0

Income before income taxes

'

'

'

'

'

'

'

'

286

248

266.2

Income tax expense (benefit)

'

'

'

'

'

'

'

'

96.6

154.4

53.8

Net income

'

'

'

'

'

'

'

'

189.4

93.6

212.4

Less: Net income attributable to noncontrolling interest

'

'

'

'

'

'

'

'

0

0

0

Net income attributable to Kansas City Southern and subsidiaries

'

'

'

'

'

'

'

'

189.4

93.6

212.4

Other comprehensive income (loss)

'

'

'

'

'

'

'

'

-0.1

0.9

-1.3

Comprehensive income attributable to Kansas City Southern and subsidiaries

'

'

'

'

'

'

'

'

189.3

94.5

211.1

Consolidating Adjustments [Member]

'

'

'

'

'

'

'

'

'

'

'

Condensed Income Statements, Captions [Line Items]

'

'

'

'

'

'

'

'

'

'

'

Revenues

'

'

'

'

'

'

'

'

-40.2

-35.7

-31

Operating expenses

'

'

'

'

'

'

'

'

-42.8

-38.2

-33.5

Operating income

'

'

'

'

'

'

'

'

2.6

2.5

2.5

Equity in net earnings of unconsolidated affiliates

'

'

'

'

'

'

'

'

-322.6

-224.3

-314.2

Interest expense

'

'

'

'

'

'

'

'

47.2

52.9

40.5

Debt retirement costs

'

'

'

'

'

'

'

'

0

0

0

Foreign exchange gain (loss)

'

'

'

'

'

'

'

'

0

0

0

Other income (expense), net

'

'

'

'

'

'

'

'

-49.8

69.3

-43

Income before income taxes

'

'

'

'

'

'

'

'

-322.6

-99.6

-314.2

Income tax expense (benefit)

'

'

'

'

'

'

'

'

0

0

0

Net income

'

'

'

'

'

'

'

'

-322.6

-99.6

-314.2

Less: Net income attributable to noncontrolling interest

'

'

'

'

'

'

'

'

0

0

0

Net income attributable to Kansas City Southern and subsidiaries

'

'

'

'

'

'

'

'

-322.6

-99.6

-314.2

Other comprehensive income (loss)

'

'

'

'

'

'

'

'

-0.4

-0.3

1.1

Comprehensive income attributable to Kansas City Southern and subsidiaries

'

'

'

'

'

'

'

'

($323)

($99.90)

($313.10)

[1]

During the second quarter of 2012, the Company recognized a pre-tax gain of $43.0 million within operating expenses for the elimination of deferred statutory profit sharing liability, net as a result of the organizational restructuring during the period.

[2]

During the second quarter of 2013, the Company recognized pre-tax $111.4 million of debt retirement costs related to debt restructuring activities that occurred during the period.

Condensed_Consolidating_Balanc

Condensed Consolidating Balance Sheets (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Assets:	'	'
Current assets	$942.40	$522.30
Investments	41.1	51.5
Investments in consolidated subsidiaries	0	0
Restricted funds	4.2	14.2
Property and equipment (including concession assets), net	6,356.30	5,684.80
Other assets	91.4	123.1
Total assets	7,435.40	6,395.90
Liabilities and equity:	'	'
Current liabilities	730.6	424.8
Long-term debt	1,856.90	1,547.60
Deferred income taxes	1,044.60	894.2
Other liabilities	126.7	128.6
Stockholders’ equity	3,370.60	3,096.60
Noncontrolling interest	306	304.1
Total liabilities and equity	7,435.40	6,395.90
Parent [Member]	'	'
Assets:	'	'
Current assets	2.6	2.4
Investments	0	0
Investments in consolidated subsidiaries	2,154.60	2,242
Restricted funds	0	0
Property and equipment (including concession assets), net	0.1	0
Other assets	1.5	1.3
Total assets	2,158.80	2,245.70
Liabilities and equity:	'	'
Current liabilities	-1,216.50	-881.1
Long-term debt	0.2	0.2
Deferred income taxes	-11.7	2.7
Other liabilities	6.6	6.7
Stockholders’ equity	3,380.20	3,117.20
Noncontrolling interest	0	0
Total liabilities and equity	2,158.80	2,245.70
KCSR [Member]	'	'
Assets:	'	'
Current assets	403	236.4
Investments	9.6	23.9
Investments in consolidated subsidiaries	-2.1	-0.2
Restricted funds	0	0
Property and equipment (including concession assets), net	2,780.40	2,275
Other assets	50.9	190.6
Total assets	3,241.80	2,725.70
Liabilities and equity:	'	'
Current liabilities	1,580.60	1,058.90
Long-term debt	704.3	569.6
Deferred income taxes	719.8	575.5
Other liabilities	92	116.4
Stockholders’ equity	145.1	405.3
Noncontrolling interest	0	0
Total liabilities and equity	3,241.80	2,725.70
Guarantor Subsidiaries [Member]	'	'
Assets:	'	'
Current assets	8.8	5.4
Investments	0	0
Investments in consolidated subsidiaries	461.8	454.8
Restricted funds	0	0
Property and equipment (including concession assets), net	198.6	204.3
Other assets	0	0
Total assets	669.2	664.5
Liabilities and equity:	'	'
Current liabilities	130.7	131.4
Long-term debt	0.2	0.3
Deferred income taxes	127.6	130
Other liabilities	0.7	0.4
Stockholders’ equity	104	98.3
Noncontrolling interest	306	304.1
Total liabilities and equity	669.2	664.5
Non-Guarantor Subsidiaries [Member]	'	'
Assets:	'	'
Current assets	560.1	318.6
Investments	31.5	27.6
Investments in consolidated subsidiaries	0	0
Restricted funds	4.2	14.2
Property and equipment (including concession assets), net	3,377.20	3,205.50
Other assets	39	67.7
Total assets	4,012	3,633.60
Liabilities and equity:	'	'
Current liabilities	267.9	156.1
Long-term debt	1,152.20	1,090.30
Deferred income taxes	208.9	186
Other liabilities	27.5	28.8
Stockholders’ equity	2,355.50	2,172.40
Noncontrolling interest	0	0
Total liabilities and equity	4,012	3,633.60
Consolidating Adjustments [Member]	'	'
Assets:	'	'
Current assets	-32.1	-40.5
Investments	0	0
Investments in consolidated subsidiaries	-2,614.30	-2,696.60
Restricted funds	0	0
Property and equipment (including concession assets), net	0	0
Other assets	0	-136.5
Total assets	-2,646.40	-2,873.60
Liabilities and equity:	'	'
Current liabilities	-32.1	-40.5
Long-term debt	0	-112.8
Deferred income taxes	0	0
Other liabilities	-0.1	-23.7
Stockholders’ equity	-2,614.20	-2,696.60
Noncontrolling interest	0	0
Total liabilities and equity	($2,646.40)	($2,873.60)

Condensed_Consolidating_Statem1

Condensed Consolidating Statements of Cash Flows (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Operating activities:	'	'	'
Net cash provided (used)	$798.30	$673.20	$638
Investing activities:	'	'	'
Capital expenditures	-594.8	-517.1	-482.2
Purchase or replacement of equipment under operating leases	-211.8	-22.9	-12.8
Return of investment	'	'	0
Property investments in MSLLC	-31.6	-35.2	-33.3
Proceeds from repayment of loans to affiliates	0	0	'
Loans to affiliates	0	'	'
Other investing activities	4.9	23.3	17.9
Net cash used for investing activities	-833.3	-551.9	-510.4
Financing activities:	'	'	'
Proceeds from issuance of long-term debt	1,918.40	329.6	550
Repayment of long-term debt	-1,343.20	-375.9	-653.3
Debt costs	-117.8	-22.1	-36.6
Dividends paid	-71.2	-86.1	-3
Distribution to affiliate	'	'	0
Proceeds from loans from affiliates	0	'	'
Repayment of loans from affiliates	0	0	'
Other financing activities	5.7	33.4	2.3
Net cash provided by (used for) financing activities	391.9	-121.1	-140.6
Cash and cash equivalents:	'	'	'
Net increase (decrease) during each period	356.9	0.2	-13
At beginning of year	72.6	72.4	85.4
At end of year	429.5	72.6	72.4
Parent [Member]	'	'	'
Operating activities:	'	'	'
Net cash provided (used)	70.7	53.3	-77.8
Investing activities:	'	'	'
Capital expenditures	0	0	0
Purchase or replacement of equipment under operating leases	0	0	0
Return of investment	'	'	84.4
Property investments in MSLLC	0	0	0
Proceeds from repayment of loans to affiliates	0	0	'
Loans to affiliates	0	'	'
Other investing activities	-4.9	-0.5	-6
Net cash used for investing activities	-4.9	-0.5	78.4
Financing activities:	'	'	'
Proceeds from issuance of long-term debt	0	0	0
Repayment of long-term debt	0	0	0
Debt costs	0	0	0
Dividends paid	-71.2	-86.1	-3
Distribution to affiliate	'	'	0
Proceeds from loans from affiliates	0	'	'
Repayment of loans from affiliates	0	0	'
Other financing activities	5.7	33.4	2.3
Net cash provided by (used for) financing activities	-65.5	-52.7	-0.7
Cash and cash equivalents:	'	'	'
Net increase (decrease) during each period	0.3	0.1	-0.1
At beginning of year	0.1	0	0.1
At end of year	0.4	0.1	0
KCSR [Member]	'	'	'
Operating activities:	'	'	'
Net cash provided (used)	272.2	236.4	420
Investing activities:	'	'	'
Capital expenditures	-417.4	-281.2	-295.7
Purchase or replacement of equipment under operating leases	-130.9	-19.7	0
Return of investment	'	'	0
Property investments in MSLLC	0	0	0
Proceeds from repayment of loans to affiliates	181.4	87.2	'
Loans to affiliates	-69.5	'	'
Other investing activities	-5.1	5.8	-5
Net cash used for investing activities	-441.5	-207.9	-300.7
Financing activities:	'	'	'
Proceeds from issuance of long-term debt	687.6	329.6	350
Repayment of long-term debt	-344.3	-356.2	-437.1
Debt costs	-7.5	-21.3	-21
Dividends paid	0	0	0
Distribution to affiliate	'	'	0
Proceeds from loans from affiliates	0	'	'
Repayment of loans from affiliates	0	0	'
Other financing activities	0	0	0
Net cash provided by (used for) financing activities	335.8	-47.9	-108.1
Cash and cash equivalents:	'	'	'
Net increase (decrease) during each period	166.5	-19.4	11.2
At beginning of year	29.6	49	37.8
At end of year	196.1	29.6	49
Guarantor Subsidiaries [Member]	'	'	'
Operating activities:	'	'	'
Net cash provided (used)	2.6	2.3	7.6
Investing activities:	'	'	'
Capital expenditures	-2	-2.1	-7.6
Purchase or replacement of equipment under operating leases	0	0	0
Return of investment	'	'	0
Property investments in MSLLC	0	0	0
Proceeds from repayment of loans to affiliates	0	0	'
Loans to affiliates	0	'	'
Other investing activities	-1.1	-0.5	-6
Net cash used for investing activities	-3.1	-2.6	-13.6
Financing activities:	'	'	'
Proceeds from issuance of long-term debt	0	0	0
Repayment of long-term debt	-0.1	-0.1	0
Debt costs	0	0	0
Dividends paid	0	0	0
Distribution to affiliate	'	'	0
Proceeds from loans from affiliates	0	'	'
Repayment of loans from affiliates	0	0	'
Other financing activities	0.7	0.5	6
Net cash provided by (used for) financing activities	0.6	0.4	6
Cash and cash equivalents:	'	'	'
Net increase (decrease) during each period	0.1	0.1	0
At beginning of year	0.1	0	0
At end of year	0.2	0.1	0
Non-Guarantor Subsidiaries [Member]	'	'	'
Operating activities:	'	'	'
Net cash provided (used)	463.8	389.2	288.3
Investing activities:	'	'	'
Capital expenditures	-175.8	-233.8	-178.9
Purchase or replacement of equipment under operating leases	-80.9	-3.2	-12.8
Return of investment	'	'	0
Property investments in MSLLC	-31.6	-35.2	-33.3
Proceeds from repayment of loans to affiliates	0	0	'
Loans to affiliates	0	'	'
Other investing activities	10.8	17.5	22.8
Net cash used for investing activities	-277.5	-254.7	-202.2
Financing activities:	'	'	'
Proceeds from issuance of long-term debt	1,230.80	0	200
Repayment of long-term debt	-998.8	-19.6	-216.2
Debt costs	-110.3	-0.8	-15.6
Dividends paid	-11	-8	0
Distribution to affiliate	'	'	-84.4
Proceeds from loans from affiliates	69.5	'	'
Repayment of loans from affiliates	-181.4	-87.2	'
Other financing activities	4.9	0.5	6
Net cash provided by (used for) financing activities	3.7	-115.1	-110.2
Cash and cash equivalents:	'	'	'
Net increase (decrease) during each period	190	19.4	-24.1
At beginning of year	42.8	23.4	47.5
At end of year	232.8	42.8	23.4
Consolidating Adjustments [Member]	'	'	'
Operating activities:	'	'	'
Net cash provided (used)	-11	-8	-0.1
Investing activities:	'	'	'
Capital expenditures	0.4	0	0
Purchase or replacement of equipment under operating leases	0	0	0
Return of investment	'	'	-84.4
Property investments in MSLLC	0	0	0
Proceeds from repayment of loans to affiliates	-181.4	-87.2	'
Loans to affiliates	69.5	'	'
Other investing activities	5.2	1	12.1
Net cash used for investing activities	-106.3	-86.2	-72.3
Financing activities:	'	'	'
Proceeds from issuance of long-term debt	0	0	0
Repayment of long-term debt	0	0	0
Debt costs	0	0	0
Dividends paid	11	8	0
Distribution to affiliate	'	'	84.4
Proceeds from loans from affiliates	-69.5	'	'
Repayment of loans from affiliates	181.4	87.2	'
Other financing activities	-5.6	-1	-12
Net cash provided by (used for) financing activities	117.3	94.2	72.4
Cash and cash equivalents:	'	'	'
Net increase (decrease) during each period	0	0	0
At beginning of year	0	0	0
At end of year	$0	$0	$0

Geographic_Information_Informa

Geographic Information (Information by Geographic Area) (Details) (USD $)	3 Months Ended								12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Revenues	$615.60	$621.60	$579.30	$552.80	$568.40	$577.40	$545.30	$547.50	$2,369.30	$2,238.60	$2,098.30
Property and equipment (including concession assets), net	6,356.30	'	'	'	5,684.80	'	'	'	6,356.30	5,684.80	'
UNITED STATES	'	'	'	'	'	'	'	'	'	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Revenues	'	'	'	'	'	'	'	'	1,268	1,216.70	1,159.90
Property and equipment (including concession assets), net	3,662.20	'	'	'	3,126.20	'	'	'	3,662.20	3,126.20	'
MEXICO	'	'	'	'	'	'	'	'	'	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Revenues	'	'	'	'	'	'	'	'	1,101.30	1,021.90	938.4
Property and equipment (including concession assets), net	$2,694.10	'	'	'	$2,558.60	'	'	'	$2,694.10	$2,558.60	'

Subsequent_Events_Details

Subsequent Events (Details)

12 Months Ended

6 Months Ended

0 Months Ended

0 Months Ended

In Millions, except Per Share data, unless otherwise specified

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Jun. 30, 2013

Jun. 30, 2013

Jun. 30, 2013

Dec. 31, 2013

Dec. 31, 2012

Jan. 22, 2010

Jan. 31, 2014

Jan. 27, 2014

Jan. 31, 2014

Jan. 31, 2014

Jan. 31, 2014

Jan. 30, 2014

Jan. 31, 2014

Jan. 30, 2014

Jan. 29, 2014

Jan. 31, 2014

Jan. 30, 2014

USD ($)

USD ($)

USD ($)

Foreign Currency Forward Contracts [Member]

Not Designated as Hedging Instrument [Member]

Not Designated as Hedging Instrument [Member]

Not Designated as Hedging Instrument [Member]

Not Designated as Hedging Instrument [Member]

KCSM [Member]

Subsequent Event [Member]

Subsequent Event [Member]

Subsequent Event [Member]

Subsequent Event [Member]

Subsequent Event [Member]

Subsequent Event [Member]

Subsequent Event [Member]

Subsequent Event [Member]

Subsequent Event [Member]

Subsequent Event [Member]

Subsequent Event [Member]

USD ($)

Foreign Currency Forward Contracts [Member]

Foreign Currency Forward Contracts [Member]

Foreign Currency Forward Contracts [Member]

Foreign Currency Forward Contracts [Member]

KCSM 8.0% Senior Notes, Due February 1, 2018 [Member]

USD ($)

USD ($)

Not Designated as Hedging Instrument [Member]

Not Designated as Hedging Instrument [Member]

Operating Expense [Member]

KCSR [Member]

KCSR [Member]

KCSR [Member]

KCSM [Member]

KCSM [Member]

KCSM [Member]

USD ($)

MXN

USD ($)

USD ($)

Senior Notes [Member]

Foreign Currency Forward Contracts [Member]

Foreign Currency Forward Contracts [Member]

USD ($)

2012 Credit Agreement [Member]

Commercial Paper [Member]

Commercial Paper [Member]

KCSM 8.0% Senior Notes, Due February 1, 2018 [Member]

Commercial Paper [Member]

Commercial Paper [Member]

USD ($)

MXN

Revolving Credit Facility [Member]

USD ($)

USD ($)

Senior Notes [Member]

USD ($)

USD ($)

USD ($)

USD ($)

Credit Agreement Amendments and Commercial Paper Programs [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amount of established commercial paper program

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$450

'

'

$200

Increased borrowing capacity under the Revolving Facility

'

'

'

'

'

'

'

'

'

'

'

'

'

'

450

'

'

'

'

'

Outstanding amount issued under the commercial paper program

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

'

'

0

'

Redemption of KCSM 8.0% Senior Notes [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Outstanding principal amount of the KCSM 8.0% Senior Notes

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

62.8

'

'

Stated interest rate on Senior Notes

'

'

'

'

'

'

'

'

8.00%

'

'

'

'

'

'

'

'

8.00%

'

'

Redemption price expressed as percent of principal amount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

104.00%

'

'

Lease Conversion Program [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amount of equipment under existing operating leases as of the date of the filing, which the Company has entered into binding agreements with the lessors to purchase

211.8

22.9

12.8

'

'

'

'

'

'

69

'

'

'

'

'

'

'

'

'

'

Lease termination costs to be recognized in 2014

'

'

'

'

'

'

'

'

'

'

'

'

'

21

'

'

'

'

'

'

Foreign Currency Hedging [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Aggregate notional amount of foreign currency forward contracts

'

'

'

325

325

4,202.30

0

0

'

'

'

345

4,642.50

'

'

'

'

'

'

'

Foreign currency forward contracts maturity date

'

'

'

'

31-Dec-13

31-Dec-13

'

'

'

'

'

31-Dec-14

31-Dec-14

'

'

'

'

'

'

'

Weighted average exchange rate of foreign currency forward contracts (in Ps per USD)

'

'

'

'

'

12.93

'

'

'

'

'

'

13.46

'

'

'

'

'

'

'

Common Stock Dividend [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Cash dividends declared per common share

$0.86

$0.78

$0

'

'

'

'

'

'

'

$0.28

'

'

'

'

'

'

'

'

'

Aggregate amount of dividends on common stock

$94.80

$85.90

'

'

'

'

'

'

'

'

$30.90

'

'

'

'

'

'

'

'

'