Kansas City Southern (KSU) 10-Q 19 Oct 18 2018 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2018	Oct. 12, 2018
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q3
Entity Registrant Name	KANSAS CITY SOUTHERN
Entity Central Index Key	54,480
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		101,697,441

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) shares in Thousands, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Revenues	$ 699	$ 656.6	$ 2,020	$ 1,922.5
Operating expenses:
Compensation and benefits	123.5	129	367.4	371.6
Purchased services	52.6	46.3	149.2	146.5
Fuel	90.2	80.1	257	234.4
Mexican fuel excise tax credit	(9.4)	(11.1)	(26.6)	(35.6)
Equipment costs	33	30.9	95.9	93.3
Depreciation and amortization	87.5	81.9	257.1	241.6
Materials and other	65.6	65.7	199.5	186.9
Gain on insurance recoveries related to hurricane damage	(9.4)	0	(9.4)	0
Total operating expenses	433.6	422.8	1,290.1	1,238.7
Operating income	265.4	233.8	729.9	683.8
Equity in net earnings (losses) of affiliates	(0.2)	2.8	1.8	9.7
Interest expense	(28.3)	(25.2)	(81.8)	(74.9)
Debt retirement costs	0	0	(2.2)	0
Foreign exchange gain	9.5	0.8	16.3	61.8
Other income (expense), net	0.6	(0.3)	0.8	0.7
Income before income taxes	247	211.9	664.8	681.1
Income tax expense	73	82	197.2	269.6
Net income	174	129.9	467.6	411.5
Less: Net income attributable to noncontrolling interest	0.4	0.6	1.3	1.2
Net income attributable to Kansas City Southern and subsidiaries	173.6	129.3	466.3	410.3
Preferred stock dividends	0.1	0.1	0.2	0.2
Net income available to common stockholders	$ 173.5	$ 129.2	$ 466.1	$ 410.1
Earnings per share:
Basic earnings per share	$ 1.71	$ 1.24	$ 4.56	$ 3.89
Diluted earnings per share	$ 1.70	$ 1.23	$ 4.55	$ 3.88
Average shares outstanding (in thousands):
Basic	101,658	104,324	102,106	105,297
Potentially dilutive common shares	452	354	418	285
Diluted	102,110	104,678	102,524	105,582

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Net income	$ 174	$ 129.9	$ 467.6	$ 411.5
Other comprehensive income (loss):
Unrealized gain (loss) on interest rate derivative instruments during the period, net of tax of $1.1 million, $(0.3) million, $3.2 million and $(1.8) million, respectively	3.5	(0.5)	9.5	(2.8)
Foreign currency translation adjustments, net of tax of $(0.1) million and $0.7 million, respectively, for 2017	0.7	(0.2)	0.7	1.1
Other comprehensive income (loss)	4.2	(0.7)	10.2	(1.7)
Comprehensive income	178.2	129.2	477.8	409.8
Less: Comprehensive income attributable to noncontrolling interest	0.4	0.6	1.3	1.2
Comprehensive income attributable to Kansas City Southern and subsidiaries	$ 177.8	$ 128.6	$ 476.5	$ 408.6

Consolidated Statements of Co_2

Consolidated Statements of Comprehensive Income (Parentheticals) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Tax effect on unrealized gain (loss) on interest rate derivative instruments during the period	$ 1.1	$ (0.3)	$ 3.2	$ (1.8)
Tax effect on foreign currency translation adjustments		$ (0.1)		$ 0.7

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Millions	Sep. 30, 2018		Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 107.1		$ 134.1
Accounts receivable, net	272		237.8
Materials and supplies	155.2		150.8
Other current assets	81.6		157.4
Total current assets	615.9		680.1
Investments	46.5		44.6
Property and equipment (including concession assets), net	8,644.5		8,403.8
Other assets	102.2		70.2
Total assets	9,409.1		9,198.7
Current liabilities:
Long-term debt due within one year	10.5		38.8
Short-term borrowings	0		345.1
Accounts payable and accrued liabilities	455.4		587.8
Total current liabilities	465.9		971.7
Long-term debt	2,680.7		2,235.5
Deferred income taxes	1,069.2		987.2
Other noncurrent liabilities and deferred credits	102.5		138.9
Total liabilities	4,318.3		4,333.3
Stockholders' equity:
$.01 par, common stock, 400,000,000 shares authorized; 123,352,185 shares issued; 101,697,129 and 103,036,805 shares outstanding at September 30, 2018 and December 31, 2017, respectively	1		1
Additional paid-in capital	949.9		943.3
Retained earnings	3,818.4		3,611.4
Accumulated other comprehensive loss	(3.4)		(12.9)
Total stockholders’ equity	4,771.8		4,548.9
Noncontrolling interest	319		316.5
Total equity	5,090.8	[1]	4,865.4
Total liabilities and equity	9,409.1		9,198.7
$25 Par Preferred Stock [Member]
Stockholders' equity:
$25 par, 4% noncumulative, preferred stock, 840,000 shares authorized, 649,736 shares issued; 232,945 and 242,170 shares outstanding at September 30, 2018 and December 31, 2017, respectively	$ 5.9		$ 6.1
[1]	The Company reclassified $0.7 million of stranded tax effects out of accumulated other comprehensive loss and into retained earnings during the first quarter of 2018, due to the adoption of ASU No. 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. For additional discussion, see Note 1 - Basis of Presentation.

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	9 Months Ended	12 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
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	101,697,129	103,036,805
$25 Par Preferred Stock [Member]
Stockholders' equity:
Preferred Stock, Par Value	$ 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	232,945	242,170

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Operating activities:
Net income	$ 467.6	$ 411.5
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	257.1	241.6
Deferred income taxes	78.8	146.6
Equity in net earnings of affiliates	(1.8)	(9.7)
Share-based compensation	16	14.6
Distributions from affiliates	2.5	5
Settlement of foreign currency derivative instruments	13.8	(14.4)
Gain on foreign currency derivative instruments	(10.3)	(45.5)
Mexican fuel excise tax credit	(26.6)	(35.6)
Gain on insurance recoveries related to hurricane damage	(9.4)	0
Deemed mandatory repatriation tax	(18.7)	0
Changes in working capital items:
Accounts receivable	(39.2)	(46.8)
Materials and supplies	1.3	1.1
Other current assets	2.2	(24.4)
Accounts payable and accrued liabilities	(22.5)	109
Other, net	(5)	(19.3)
Net cash provided by operating activities	705.8	733.7
Investing activities:
Capital expenditures	(396.8)	(446.9)
Purchase or replacement of equipment under operating leases	(98.9)	(42.6)
Property investments in MSLLC	(24)	(23.7)
Investments in and advances to affiliates	(10.3)	(20.3)
Proceeds from disposal of property	7.2	6.6
Other, net	(2.2)	(15.1)
Net cash provided (used)	(525)	(542)
Financing activities:
Proceeds from short-term borrowings	4,158	9,772.2
Repayment of short-term borrowings	(4,506.1)	(9,600.9)
Proceeds from issuance of long-term debt	499.4	0
Repayment of long-term debt	(78.7)	(20.2)
Dividends paid	(110.9)	(105.1)
Shares repurchased	(163.3)	(320.4)
Debt issuance and retirement costs paid	(8)	0
Proceeds from employee stock plans	1.8	0.5
Net cash used for financing activities	(207.8)	(273.9)
Cash and cash equivalents:
Net decrease during each period	(27)	(82.2)
At beginning of year	134.1	170.6
At end of period	$ 107.1	$ 88.4

Basis of Presentation

Basis of Presentation	9 Months Ended
	Sep. 30, 2018
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation In the opinion of the management of KCS, the accompanying unaudited consolidated financial statements contain all adjustments (consisting of normal and recurring adjustments) necessary to reflect a fair statement of the results for interim periods in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”). Pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”), certain information and note disclosures normally included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted. These consolidated financial statements should be read in conjunction with the consolidated financial statements and accompanying notes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2017 . The results of operations for the three and nine months ended September 30, 2018 , are not necessarily indicative of the results to be expected for the full year ending December 31, 2018 . During the first quarter of 2018, the Company adopted Accounting Standards Update ("ASU") No. 2014-09, Revenue from Contracts with Customers, which is also known as Accounting Standard Codification ("ASC") Topic 606, for all contracts, using the modified retrospective method. Results from reporting periods beginning after January 1, 2018, are presented under ASC Topic 606, while prior period amounts are not adjusted and continue to be reported in accordance with the Company's historical accounting under ASC Topic 605, Revenue Recognition . The adoption of this guidance did not have a significant impact on the Company's consolidated financial statements; thus no adjustment was made to the opening balance of equity at January 1, 2018. See Note 3 - Revenue for additional information. During the first quarter of 2018, the Company adopted ASU No. 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income, which allows for a reclassification from accumulated other comprehensive loss to retained earnings for stranded tax effects resulting from the Tax Cuts and Jobs Act. The Company applied the guidance as of the beginning of the period of adoption and reclassified $0.7 million , due to the change in federal corporate tax rate, from accumulated other comprehensive loss to retained earnings. It is the Company’s policy to release income tax effects from accumulated other comprehensive loss using the portfolio approach.

New Accounting Pronouncements

New Accounting Pronouncements	9 Months Ended
	Sep. 30, 2018
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
New Accounting Pronouncements	New Accounting Pronouncements In February 2016, the FASB issued ASU No. 2016-02, Leases , which requires lessees to recognize for all leases a right-to-use asset and a lease obligation in the consolidated balance sheet. Expenses are recognized in the consolidated statement of income in a manner similar to current accounting guidance. Lessees are permitted to make an accounting policy election to not recognize an asset and liability for leases with a term of twelve months or less. Lessor accounting under the new standard is substantially unchanged. Additional qualitative and quantitative disclosures, including significant judgments made by management, will be required. The new standard will become effective for the Company beginning with the first quarter 2019. The Company plans to adopt the accounting standard using a prospective transition approach, which applies the provisions of the new guidance at the effective date without adjusting the comparative periods presented. The Company continues to assess the contractual arrangements that may qualify as a lease under the new standard and is implementing a lease accounting system. At December 31, 2017, KCS disclosed approximately $282 million of undiscounted operating leases in the leases and debt maturities table within Note 11, Long-Term Debt in the Company’s most recent Form 10-K and will evaluate those contracts as well as other existing arrangements to determine if they qualify for lease accounting under the new standard. The Company is continuing to evaluate the impacts the adoption of this accounting guidance will have on the consolidated financial statements.

Revenue

Revenue	9 Months Ended
	Sep. 30, 2018
Revenue from Contract with Customer [Abstract]
Revenue	Revenue Significant Accounting Policy The primary performance obligation for the Company is to move customers’ freight from an origin to a destination. A performance obligation is created when a customer under a transportation contract or public tariff submits a bill of lading for the transport of goods. The Company recognizes revenue proportionally as a shipment moves from origin to destination, using the distance shipped to measure progress, as the customer simultaneously receives and consumes the benefit over time. Related expenses are recognized as incurred. Revenue associated with in-transit shipments at period end is recognized based on the distance shipped as of the balance sheet date. Payment is received at or shortly after the performance obligation is satisfied. The transaction price is generally in the form of a fixed fee determined at the inception of the transportation contract or the inception of the bill of lading. Certain customer agreements have variable consideration that are based on milestone achievements in the form of rebates, discounts or incentives. The Company makes judgments to determine whether the variable consideration is probable of occurring and should be included in the estimated transaction price at the beginning of the period to apply a more consistent rate throughout the year based on an analysis of historical experience with the customer, forecasted shipments, and other economic indicators. The Company adjusts the estimate on a quarterly basis. Other revenues, including switching, storage, and demurrage are distinct services and are recognized as services are performed or as contractual obligations are fulfilled. The consideration for other revenue is allocated between the separate services based upon the stand-alone transaction price. Disaggregation of Revenue The following table presents revenues disaggregated by the major commodity groups as well as the product types included within the major commodity groups (in millions) . The Company believes disaggregation by product type best depicts how cash flows are affected by economic factors. See Note 14 for revenues by geographical area. Three Months Ended Nine Months Ended September 30, September 30, 2018 (ASC 606) 2017 (ASC 605) 2018 (ASC 606) 2017 (ASC 605) Chemical & Petroleum Chemicals $ 60.9 $ 57.0 $ 179.0 $ 167.6 Petroleum 64.5 47.6 171.3 137.2 Plastics 35.2 32.3 107.8 97.4 Total 160.6 136.9 458.1 402.2 Industrial & Consumer Products Forest Products 68.7 64.3 203.2 190.0 Metals & Scrap 50.1 58.9 157.9 170.5 Other 33.7 29.3 90.4 80.7 Total 152.5 152.5 451.5 441.2 Agriculture & Minerals Grain 68.5 68.6 209.1 207.9 Food Products 34.9 34.7 107.4 111.1 Ores & Minerals 5.4 5.8 16.1 14.9 Stone, Clay & Glass 7.4 6.9 22.1 21.8 Total 116.2 116.0 354.7 355.7 Energy Utility Coal 35.4 46.0 88.6 127.8 Coal & Petroleum Coke 11.9 9.4 33.3 30.7 Frac Sand 8.8 13.8 30.4 38.5 Crude Oil 17.1 5.3 38.7 17.0 Total 73.2 74.5 191.0 214.0 Intermodal 100.0 92.3 284.6 266.4 Automotive 66.2 61.4 193.3 170.2 Total Freight Revenues 668.7 633.6 1,933.2 1,849.7 Other Revenue 30.3 23.0 86.8 72.8 Total Revenues $ 699.0 $ 656.6 $ 2,020.0 $ 1,922.5 Major customers No individual customer makes up greater than 10% of total consolidated revenues. Contract Balances The amount of revenue recognized in the third quarter of 2018 from performance obligations partially satisfied in previous periods was $25.8 million . The performance obligations that were unsatisfied or partially satisfied as of September 30, 2018 , were $30.1 million , which represents in-transit shipments that are fully satisfied the following month. A receivable is any unconditional right to consideration, and is recognized as shipments have been completed and the relating performance obligation has been fully satisfied. At September 30, 2018 , and December 31, 2017 , the accounts receivable, net balance was $272.0 million and $237.8 million , respectively. Contract assets represent a conditional right to consideration in exchange for goods or services. The Company did not have any contract assets at September 30, 2018 , and December 31, 2017. Contract liabilities represent advance consideration received from customers, and are recognized as revenue over time as the relating performance obligation is satisfied. The amount of revenue recognized in the third quarter of 2018 that was included in the opening contract liability balance was $9.3 million . The Company has recognized contract liabilities within the accounts payable and accrued liabilities financial statement caption on the balance sheet. These are considered current liabilities as they will be settled in less than 12 months. The following tables summarize the changes in contract liabilities (in millions) : Contract liabilities Three Months Ended September 30, Nine Months Ended September 30, 2018 (ASC 606) 2017 (ASC 605) 2018 (ASC 606) 2017 (ASC 605) Beginning balance $ 16.6 $ 5.9 $ 26.8 $ 13.7 Revenue recognized that was included in the contract liability balance at the beginning of the period (9.3 ) (4.6 ) (23.7 ) (13.7 ) Increases due to cash received, excluding amounts recognized as revenue during the period 0.9 2.2 5.1 3.5 Ending balance $ 8.2 $ 3.5 $ 8.2 $ 3.5

Hurricane Harvey

Hurricane Harvey	9 Months Ended
	Sep. 30, 2018
Unusual or Infrequent Items, or Both [Abstract]
Hurricane Harvey	Hurricane Harvey In late August 2017, Hurricane Harvey made landfall on the Texas coast and caused flood damage to the Company’s track infrastructure and significantly disrupted the Company’s rail service. The Company filed a claim in the fourth quarter of 2017 under its insurance program for property damage, incremental expenses, and lost profits caused by Hurricane Harvey. In the third quarter of 2017, the Company recognized a receivable for probable insurance recovery offsetting the impact of incremental expenses recognized in the quarter. During the third quarter of 2018, the Company partially settled its insurance claim for $27.0 million . As a result of this nonrefundable partial settlement, the Company recognized a gain on insurance recoveries of $9.4 million , net of the self-insured retention and insurance receivable. The Company received the nonrefundable cash proceeds from this partial settlement in October 2018.

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Tax Cuts and Jobs Act. On December 22, 2017, the President of the United States signed into law the Tax Cuts and Jobs Act (the “Tax Reform Act”). The legislation significantly changed U.S. tax law by, among other things, lowering corporate income tax rates, implementing a territorial tax system and imposing a repatriation tax on deemed repatriated earnings of foreign subsidiaries. The Tax Reform Act permanently reduced the U.S. corporate income tax rate from a maximum of 35% to a 21% rate, effective January 1, 2018. While the Tax Reform Act provides for a territorial tax system, beginning in 2018, it includes the global intangible low-taxed income (“GILTI”) provision. The Company elected to account for GILTI tax in the period in which it is incurred. The GILTI provisions require the Company to include in its U.S. income tax return foreign subsidiary earnings in excess of an allowable return on the foreign subsidiary’s tangible assets. The GILTI tax expense is primarily caused by two aspects of U.S. foreign tax credit limitation provisions. First, required allocations of interest expense to the GILTI income effectively renders the expense non-deductible. Secondly, as enacted in the Tax Reform Act, U.S. income tax return income inclusion of the foreign taxes paid on the GILTI income is subject to U.S. tax without any associated foreign tax credit, resulting in incremental U.S. income tax. During the third quarter of 2018, the Treasury Department acknowledged in writing that proposed regulations related to the foreign tax credit aspects of GILTI are forthcoming, which they anticipate will allow for a credit against the U.S. income tax on the income inclusion for foreign taxes paid on the GILTI income. Therefore, the Company concluded that this aspect of the foreign tax credit limitations is more likely than not to be sustained despite the conflict with the enacted tax law, and accordingly, the Company adjusted the expected GILTI tax. As a result of the GILTI provisions, the Company’s effective tax rate decreased by 0.3% for the three months ended September 30, 2018 , and increased by 1.1% for the nine months ended September 30, 2018 . Provisional Tax Impacts. On December 22, 2017, the SEC staff issued Staff Accounting Bulletin No. 118 (“SAB 118”) to address the application of U.S. GAAP in situations when a registrant does not have the necessary information available, prepared, or analyzed (including computations) in reasonable detail to complete the accounting for certain income tax effects of the Tax Reform Act. The Company recognized provisional tax impacts related to the deemed repatriated earnings and the revaluation of deferred tax assets and liabilities in its consolidated financial statements for the year ended December 31, 2017. Any adjustments made to the provisional amounts under SAB 118 should be recorded as discrete adjustments in the period identified (not to extend beyond the one-year measurement provided in SAB 118). On April 2, 2018, the Internal Revenue Service (“IRS”) issued guidance on how to determine, report and pay the repatriation tax on deemed repatriated earnings of foreign subsidiaries provided in the Tax Reform Act and included in the consolidated financial statements for the year ended December 31, 2017. During the second quarter of 2018, the Company recognized a $4.3 million discrete tax benefit resulting from the additional guidance. During the third quarter of 2018, the Company recognized a $16.6 million discrete tax benefit for adjustments to the provisional tax impacts of the Tax Reform Act included in its consolidated financial statement for the year ended December 31, 2017. These adjustments include a $14.4 million reduction in the provisional tax on deemed repatriated earnings and a $2.2 million tax benefit from changes in its revaluation of deferred tax assets and liabilities due to additional analysis, changes in interpretations and assumptions the Company made, additional regulatory guidance that was issued, and actions the Company took as a result of the Tax Reform Act. The Company expects that there could be more changes in interpretations and assumptions made by the Company or additional regulatory guidance issued that would further adjust the provisional tax amounts. As such, the deemed repatriated earnings and the revaluation of deferred tax assets and liabilities are provisional as of September 30, 2018. The accounting will be completed in the fourth quarter of 2018.

Earnings Per Share Data

Earnings Per Share Data	9 Months Ended
	Sep. 30, 2018
Earnings Per Share [Abstract]
Earnings Per Share Data	Earnings Per Share Data 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 plans. 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) : Three Months Ended Nine Months Ended September 30, September 30, 2018 2017 2018 2017 Net income available to common stockholders for purposes of computing basic and diluted earnings per share $ 173.5 $ 129.2 $ 466.1 $ 410.1 Weighted-average number of shares outstanding ( in thousands ): Basic shares 101,658 104,324 102,106 105,297 Effect of dilution 452 354 418 285 Diluted shares 102,110 104,678 102,524 105,582 Earnings per share: Basic earnings per share $ 1.71 $ 1.24 $ 4.56 $ 3.89 Diluted earnings per share $ 1.70 $ 1.23 $ 4.55 $ 3.88 Potentially dilutive shares excluded from the calculation (in thousands): Stock options excluded as their inclusion would be anti-dilutive 93 14 116 159

Property and Equipment (includi

Property and Equipment (including Concession Assets)	9 Months Ended
	Sep. 30, 2018
Property, Plant and Equipment [Abstract]
Property and Equipment (including Concession Assets)	Property and Equipment (including Concession Assets) Property and equipment, including concession assets, and related accumulated depreciation and amortization are summarized below (in millions) : September 30, December 31, Land $ 219.4 $ 218.6 Concession land rights 141.2 141.2 Road property 7,507.4 7,557.1 Equipment 2,726.1 2,534.9 Technology and other 297.6 229.1 Construction in progress 196.2 223.7 Total property 11,087.9 10,904.6 Accumulated depreciation and amortization 2,443.4 2,500.8 Property and equipment (including concession assets), net $ 8,644.5 $ 8,403.8 Concession assets, net of accumulated amortization of $578.4 million and $638.2 million , totaled $2,243.9 million and $2,208.1 million at September 30, 2018 and December 31, 2017 , respectively.

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2018
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements The Company’s derivative financial instruments are measured at fair value on a recurring basis and consist of foreign currency forward and option contracts and treasury lock agreements, which are classified as Level 2 valuations. The Company determines the fair value of its derivative financial instrument positions based upon pricing models using inputs observed from actively quoted markets and also takes into consideration the contract terms as well as other inputs, including market currency exchange rates and in the case of option contracts, volatility, the risk-free interest rate and the time to expiration. The Company’s short-term financial instruments include cash and cash equivalents, accounts receivable, accounts payable and short-term borrowings. 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 carrying value of the Company’s debt was $2,691.2 million and $2,274.3 million at September 30, 2018 and December 31, 2017 , 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 Level 2 in the fair value hierarchy. The fair value of the Company’s financial instruments is presented in the following table (in millions) : September 30, 2018 December 31, 2017 Level 2 Level 2 Assets Foreign currency derivative instruments $ 4.4 $ 7.9 Treasury lock agreements 7.1 — Liabilities Debt instruments 2,648.0 2,377.8 Treasury lock agreements — 5.6

Derivative Instruments

Derivative Instruments	9 Months Ended
	Sep. 30, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments	Derivative Instruments 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 September 30, 2018 , the Company did not expect any losses as a result of default of its counterparties. Interest Rate Derivative Instruments . In May 2017, the Company executed four treasury lock agreements with an aggregate notional value of $275.0 million and a weighted average interest rate of 2.85% . The purpose of the treasury locks is to hedge the U.S. Treasury benchmark interest rate associated with future interest payments related to the anticipated refinancing of the $275.0 million , 2.35% senior notes due May 15, 2020 . The Company has designated the treasury locks as cash flow hedges and recorded unrealized gains and losses in accumulated other comprehensive loss. Upon settlement, the unrealized gain or loss in accumulated other comprehensive income will be amortized to interest expense over the life of the future underlying debt issuance. Foreign Currency Derivative Instruments. The Company’s Mexican subsidiaries have net U.S. dollar-denominated monetary liabilities 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 income tax expense and the amount of income taxes paid in Mexico. The Company hedges its exposure to this cash tax risk by entering into foreign currency forward contracts and foreign currency option contracts known as zero-cost collars. The foreign currency forward contracts involve the Company’s purchase of pesos at an agreed-upon weighted-average exchange rate to each U.S dollar. The zero-cost collars involve the Company’s purchase of a Mexican peso call option and a simultaneous sale of a Mexican peso put option, with equivalent U.S. dollar notional amounts for each option and no net cash premium paid by the Company. The Company’s foreign currency forward and zero-cost collar contracts are executed with counterparties in the U.S. and are governed by an International Swaps and Derivatives Association agreement that includes standard netting arrangements. Asset and liability positions from contracts with the same counterparty are net settled upon maturity/expiration and presented on a net basis in the consolidated balance sheets prior to settlement. Below is a summary of the Company’s 2018 and 2017 foreign currency derivative contracts (amounts in millions, except Ps./USD) : Foreign currency forward contracts Contracts to purchase Ps./pay USD Offsetting contracts to sell Ps./receive USD Notional amount Notional amount Weighted-average exchange rate (in Ps./USD) Maturity date Notional amount Notional amount Weighted-average exchange rate (in Ps./USD) Maturity date Cash received/(paid) on settlement Contracts executed in 2016 and settled in 2017 $ 340.0 Ps. 6,207.7 Ps. 18.3 1/17/2017 $ 287.0 Ps. 6,207.7 Ps. 21.6 1/17/2017 $ (53.0 ) Foreign currency zero-cost collar contracts Notional amount Weighted-average call rate outstanding options (in Ps./USD) Weighted-average put rate outstanding options (in Ps./USD) Cash received/(paid) on settlement Contracts executed in 2018 and outstanding $ 140.0 Ps. 19.3 Ps. 22.6 — Contracts executed in 2018 and settled in 2018 $ 200.0 $ 3.8 Contracts executed in 2017 and settled in 2018 $ 80.0 $ 10.0 Contracts executed in 2017 and settled in 2017 (i) $ 450.0 $ 42.2 (i) During the nine months ended September 30, 2017, the Company settled $415.0 million of zero-cost collar contracts, resulting in cash received of $38.6 million . The Company has not designated any of the foreign currency derivative contracts as hedging instruments for accounting purposes. The Company measures the foreign currency derivative contracts at fair value each period and recognizes any change in fair value in foreign exchange gain within the consolidated statements of income. The cash flows associated with these instruments is classified as an operating activity within the consolidated statements of cash flows. The following tables present the fair value of derivative instruments included in the Consolidated Balance Sheets ( in millions ): Derivative Assets Balance Sheet Location September 30, December 31, 2017 Derivatives designated as hedging instruments: Treasury lock agreements Other assets $ 7.1 $ — Total derivatives designated as hedging instruments 7.1 — Derivatives not designated as hedging instruments: Foreign currency zero-cost collar contracts Other current assets $ 4.4 $ 7.9 Total derivatives not designated as hedging instruments 4.4 7.9 Total derivative assets $ 11.5 $ 7.9 Derivative Liabilities Balance Sheet Location September 30, December 31, 2017 Derivatives designated as hedging instruments: Treasury lock agreements Other noncurrent liabilities and deferred credits $ — $ 5.6 Total derivatives designated as hedging instruments — 5.6 Total derivative liabilities $ — $ 5.6 The following tables summarize the gross and net fair value of derivative assets and liabilities (in millions): Offsetting of Derivative Assets As of September 30, 2018 Gross Assets Gross Liabilities Net Amounts Presented in the Consolidated Balance Sheets Derivatives subject to a master netting arrangement or similar agreement $ 4.6 $ (0.2 ) $ 4.4 As of December 31, 2017 Derivatives subject to a master netting arrangement or similar agreement $ 7.9 $ — $ 7.9 Offsetting of Derivative Liabilities As of September 30, 2018 Gross Liabilities Gross Assets Net Amounts Presented in the Consolidated Balance Sheets Derivatives subject to a master netting arrangement or similar agreement $ (0.2 ) $ 0.2 $ — As of December 31, 2017 Derivatives subject to a master netting arrangement or similar agreement $ — $ — $ — The following table presents the effects of derivative instruments on the Consolidated Statements of Income and Consolidated Statements of Comprehensive Income (in millions) : Derivatives in Cash Flow Hedging Relationships Amount of Gain/(Loss) Recognized in OCI on Derivative Three Months Ended Nine Months Ended September 30, September 30, 2018 2017 2018 2017 Treasury lock agreements $ 4.6 $ (0.8 ) $ 12.7 $ (4.6 ) Total $ 4.6 $ (0.8 ) $ 12.7 $ (4.6 ) Derivatives Not Designated as Hedging Instruments Location of Gain/(Loss) Recognized in Income on Derivative Amount of Gain/(Loss) Recognized in Income on Derivative Three Months Ended Nine Months Ended September 30, September 30, 2018 2017 2018 2017 Foreign currency zero-cost collar contracts Foreign exchange gain $ 6.2 $ 3.3 $ 10.3 $ 57.4 Foreign currency forward contracts Foreign exchange gain — — — (11.9 ) Total $ 6.2 $ 3.3 $ 10.3 $ 45.5

Short-Term Borrowings

Short-Term Borrowings	9 Months Ended
	Sep. 30, 2018
Debt Disclosure [Abstract]
Short-Term Borrowings	Short-Term Borrowings Commercial Paper. The Company’s commercial paper program generally serves as the primary means of short-term funding. As of September 30, 2018 , KCS had no commercial paper outstanding. As of December 31, 2017 , KCS had $345.1 million of commercial paper outstanding, net of $0.1 million discount, at a weighted-average interest rate of 1.846% .

Long-Term Debt

Long-Term Debt	9 Months Ended
	Sep. 30, 2018
Debt Disclosure [Abstract]
Long-Term Debt	Long-Term Debt Senior Notes On May 3, 2018, KCS issued $500.0 million principal amount of senior unsecured notes due May 1, 2048 (the “4.700% Senior Notes”), which bear interest semiannually at a fixed annual rate of 4.700% . The 4.700% Senior Notes were issued at a discount to par value, resulting in a $0.6 million discount and a yield to maturity of 4.707% . The net proceeds from the offering were used to repay the outstanding commercial paper issued by KCS, repay a locomotive lease and certain equipment loans, and for general corporate purposes. The 4.700% Senior Notes are redeemable at the issuer’s option, in whole or in part, at any time, by paying the greater of either 100% of the principal amount to be redeemed or a formula price based on interest rates prevailing at the time of redemption and time remaining to maturity. The 4.700% Senior Notes include certain covenants which are customary for this type of debt instrument issued by borrowers with similar credit ratings. The 4.700% Senior Notes are unsecured and unsubordinated obligations of the Company and are unconditionally guaranteed, jointly and severally, by The Kansas City Southern Railway Company (“KCSR”) and each current and future domestic subsidiary of KCS that guarantees the KCS revolving credit facility or certain other debt of KCS or a note guarantor. On May 3, 2018, Kansas City Southern de México, S.A. de C.V. (“KCSM”) repurchased $5.3 million of the remaining $10.9 million aggregate principal amount of its 3.0% senior unsecured notes due May 15, 2023 , at a discounted price equal to 95.91% of the principal amount. As a result, the Company recognized a debt retirement benefit of $0.2 million within debt retirement costs in the consolidated statements of income. Financing Agreements During May 2018, the Company paid the remaining $23.0 million and $19.1 million principal amounts under its locomotive financing agreements with Export Development Canada and DVB Bank AG, respectively, using a portion of the proceeds from the issuance of the 4.700% Senior Notes. As a result of the early repayment, the Company recognized $2.4 million in debt retirement costs in the consolidated statements of income.

Equity

Equity	9 Months Ended
	Sep. 30, 2018
Equity [Abstract]
Equity	Equity The following tables summarize the changes in equity ( in millions): Three Months Ended September 30, 2018 Three Months Ended September 30, 2017 Kansas City Southern Stockholders’ Equity Noncontrolling Interest Total Equity Kansas City Southern Stockholders’ Equity Noncontrolling Interest Total Equity Beginning balance $ 4,677.6 $ 318.6 $ 4,996.2 $ 4,192.6 $ 315.2 $ 4,507.8 Net income 173.6 0.4 174.0 129.3 0.6 129.9 Other comprehensive income (loss) 4.2 — 4.2 (0.7 ) — (0.7 ) Dividends on common stock (36.6 ) — (36.6 ) (37.3 ) — (37.3 ) Dividends on $25 par preferred stock (0.1 ) — (0.1 ) (0.1 ) — (0.1 ) Share repurchases (54.8 ) — (54.8 ) (200.0 ) — (200.0 ) Options exercised and stock subscribed, net of shares withheld for employee taxes 3.5 — 3.5 2.7 — 2.7 Share-based compensation 4.4 — 4.4 4.1 — 4.1 Ending balance $ 4,771.8 $ 319.0 $ 5,090.8 $ 4,090.6 $ 315.8 $ 4,406.4 Nine Months Ended September 30, 2018 Nine Months Ended September 30, 2017 Kansas City Southern Stockholders’ Equity Noncontrolling Interest Total Equity Kansas City Southern Stockholders’ Equity Noncontrolling Interest Total Equity Beginning balance $ 4,548.9 $ 316.5 $ 4,865.4 $ 4,089.9 $ 314.6 $ 4,404.5 Cumulative-effect adjustment (i) — — — 2.5 — 2.5 Net income 466.3 1.3 467.6 410.3 1.2 411.5 Other comprehensive income (loss) 10.2 — 10.2 (1.7 ) — (1.7 ) Contribution from noncontrolling interest — 1.2 1.2 — — — Dividends on common stock (110.3 ) — (110.3 ) (107.2 ) — (107.2 ) Dividends on $25 par preferred stock (0.2 ) — (0.2 ) (0.2 ) — (0.2 ) Share repurchases (163.3 ) — (163.3 ) (320.4 ) — (320.4 ) Options exercised and stock subscribed, net of shares withheld for employee taxes 4.2 — 4.2 2.8 — 2.8 Share-based compensation 16.0 — 16.0 14.6 — 14.6 Ending balance (ii) $ 4,771.8 $ 319.0 $ 5,090.8 $ 4,090.6 $ 315.8 $ 4,406.4 (i) The Company recognized a $2.5 million net cumulative-effect adjustment to equity as of January 1, 2017, due to the adoption of ASU 2016-09, Improvements to Employee Share-Based Payment Accounting . (ii) The Company reclassified $0.7 million of stranded tax effects out of accumulated other comprehensive loss and into retained earnings during the first quarter of 2018 , due to the adoption of ASU No. 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. For additional discussion, see Note 1 - Basis of Presentation. Share Repurchases In August 2017, the Company announced a new common share repurchase program authorizing the Company to repurchase up to $800.0 million of its outstanding shares of common stock through June 30, 2020 (the “2017 Program”). Share repurchases under the 2017 Program may be made in the open market, through privately negotiated transactions, or through an accelerated share repurchase (“ASR”) program limited to $200.0 million . The Company entered into and settled an ASR program for the full ASR amount authorized under the 2017 Program during the second half of 2017. During the three months ended September 30, 2018 , KCS repurchased 471,829 shares of common stock for $54.6 million at an average price of $115.58 per share. During the nine months ended September 30, 2018 , KCS repurchased 1,475,206 shares of common stock for $163.1 million at an average price of $110.54 per share. Since inception of the 2017 Program, KCS has repurchased 3,894,675 shares of common stock for $418.3 million at an average price of $107.39 per share. The excess of repurchase price over par value is allocated between additional paid-in capital and retained earnings. During the three months ended September 30, 2018 , KCS repurchased 9,225 shares of its $25 par preferred stock for $0.2 million at an average price of $26.11 per share. The excess of repurchase price over par value is allocated between additional paid-in capital and retained earnings. Cash Dividends on Common Stock On August 14, 2018 , the Company’s Board of Directors declared a cash dividend of $0.36 per share payable on October 3, 2018 , to common stockholders of record as of September 10, 2018 . The aggregate amount of the dividends declared for the three and nine months ended September 30, 2018 was $36.6 million and $110.3 million , respectively. The following table presents the amount of cash dividends declared per common share by the Company’s Board of Directors: Three Months Ended Nine Months Ended September 30, September 30, 2018 2017 2018 2017 Cash dividends declared per common share $ 0.36 $ 0.36 $ 1.08 $ 1.02

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2018
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Concession Duty. Under KCSM’s 50 -year railroad concession from the Mexican government (the “Concession”), which could expire in 2047 unless extended, KCSM pays annual concession duty expense of 1.25% of gross revenues. For the three and nine months ended September 30, 2018 , the concession duty expense, which is recorded within materials and other in operating expenses, was $4.6 million and $13.3 million , respectively, compared to $4.2 million and $12.7 million for the same periods in 2017 . Litigation. The Company is a party to various legal proceedings and administrative actions, all of which 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, 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 September 30, 2018 , was based on an updated actuarial study of personal injury claims through May 31, 2018, and review of the last four months’ experience. Although these estimates cannot be predicted with certainty, management believes that the ultimate outcome will not have a material adverse effect on the Company’s consolidated financial statements. Tax Contingencies . Tax returns filed in the U.S. for periods after 2014 and in Mexico for periods after 2012 remain open to examination by the taxing authorities. In 2018, the IRS initiated an examination of the 2016 U.S. federal tax return. During the first quarter of 2017, the Company received audit assessments from the Servicio de Administración Tributaria (the “SAT”), the Mexican equivalent of the IRS, for the KCSM 2009 and 2010 Mexico tax returns. In 2017, the Company commenced administrative actions with the SAT. During the first quarter of 2018, the audit assessments were nullified by the SAT. In the third quarter of 2018, the SAT issued new assessments and the Company filed administrative appeals with the SAT. The Company believes that it has strong legal arguments in its favor and it is more likely than not that it will prevail in any challenge of the assessments. The Company litigated a Value Added Tax (“VAT”) audit assessment from the SAT for KCSM for the year ended December 31, 2005. In November 2016, KCSM was notified of a resolution by the Mexican tax court annulling this assessment. The SAT appealed this resolution to the Mexican circuit court. In September 2017, KCSM was notified of a resolution by the circuit court which ordered the tax court to consider an argument made by KCSM in the original tax court proceeding that was not addressed in the tax court’s November 2016 resolution. In October 2017, the tax court ruled that the arguments made by KCSM asserting that the SAT unduly extended the audit process were not valid, and also annulled the assessment consistent with the tax court’s earlier November 2016 ruling. In December 2017, KCSM and the SAT filed an appeal with the Federal Courts of Appeals. The Company believes it is probable that the court will continue to annul the 2005 VAT assessment. Further, the Company believes it is more likely than not that the SAT will ultimately be precluded from issuing a new 2005 VAT audit assessment. In the unexpected event that the SAT is provided the opportunity to issue a new 2005 VAT audit assessment, the Company cannot predict if the SAT would issue a new assessment or the basis of any new assessment. Accordingly, the Company is not able to estimate any related potential exposure. KCSM has not historically assessed 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 not subject to VAT (the “2008 Ruling”). Notwithstanding the 2008 Ruling, in December 2013, the SAT unofficially informed KCSM of an intended implementation of 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. In February 2014, KCSM filed an action opposing the SAT’s nullification action. In December 2016, KCSM was notified of a resolution issued by the Mexican tax court confirming the 2008 Ruling. The SAT appealed this resolution. In October 2017, the circuit court resolved to not render a decision on the case but rather to send the SAT’s appeal to the Supreme Court. In February 2018, the Supreme Court decided not to hear the case and remanded the SAT’s appeal back to the circuit court for a decision. In July 2018, the circuit court ordered the tax court to consider certain arguments made by the SAT in the original court proceeding that were not addressed in the tax court’s December 2016 resolution. On October 2, 2018, the tax court issued a decision confirming the 2008 ruling. The SAT is permitted to appeal this decision. The Company believes it is more likely than not that it will continue to prevail in this matter. Further, as of the date of this filing, the SAT has not implemented any new criteria regarding this assessment of VAT on international import transportation services. The Company believes it is probable that any unexpected nullification of the 2008 Ruling and the implementation of any new VAT criteria would be applied on a prospective basis, in which case, due to the pass-through nature of VAT, KCSM would begin to assess its customers for VAT on international import transportation services, resulting in no material impact to the Company’s consolidated financial statements. 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 believes that, when resolved, these disputes will not 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, bankruptcy, insolvency or liquidation of a customer, or 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 September 30, 2018 . Panama Canal Railway Company (“PCRC”) Guarantees and Indemnities. At September 30, 2018 , the Company had issued and outstanding $5.5 million under a standby letter of credit to fulfill its obligation to fund fifty percent of the debt service reserve and 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.

Geographic Information

Geographic Information	9 Months Ended
	Sep. 30, 2018
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 chief operating decision-maker is the chief executive officer. The following tables provide information by geographic area (in millions) : Three Months Ended Nine Months Ended September 30, September 30, Revenues 2018 2017 2018 2017 U.S. $ 373.3 $ 345.9 $ 1,060.2 $ 1,011.5 Mexico 325.7 310.7 959.8 911.0 Total revenues $ 699.0 $ 656.6 $ 2,020.0 $ 1,922.5 Property and equipment (including concession assets), net September 30, December 31, U.S. $ 5,375.0 $ 5,227.3 Mexico 3,269.5 3,176.5 Total property and equipment (including concession assets), net $ 8,644.5 $ 8,403.8

Condensed Consolidating Financi

Condensed Consolidating Financial Information	9 Months Ended
	Sep. 30, 2018
Condensed Consolidating Financial Information [Abstract]
Condensed Consolidating Financial Information	Condensed Consolidating Financial Information Pursuant to SEC Regulation S-X Rule 3-10 “Financial statements of guarantors and issuers of guaranteed securities registered or being registered,” the Company is required to provide condensed consolidating financial information for issuers of certain of its senior notes that are guaranteed. As of September 30, 2018 , KCS, the parent, had outstanding $2,593.5 million senior notes due through 2048 . The senior notes are unsecured obligations of KCS, and are also jointly and severally and fully and unconditionally guaranteed on an unsecured senior basis by The Kansas City Southern Railway Company (“KCSR”) and certain wholly-owned domestic subsidiaries of KCS (the “Guarantor Subsidiaries”). As of September 30, 2018 , KCSR had outstanding $2.9 million principal amount of senior notes due through 2045. The senior notes are unsecured obligations of KCSR, and are also jointly and severally and fully and unconditionally guaranteed on an unsecured senior basis by KCS and the Guarantor Subsidiaries. The following condensed and consolidating financial information ( in millions ) of KCS, KCSR, the Guarantor Subsidiaries and the other KCS subsidiaries that are not guarantors (the "Non-Guarantor Subsidiaries") are being presented in order to meet the reporting requirements under Rule 3-10 of Regulation S-X. Pursuant to Rule 3-10(d) and (f) of Regulation S-X, separate financial statements for the Issuer, the Parent and the Guarantor Subsidiaries are not required to be filed with the SEC as the subsidiary debt issuer and the guarantors are directly or indirectly 100% owned by the Parent and the guarantees are full and unconditional and joint and several. Condensed Consolidating Statements of Comprehensive Income Three Months Ended September 30, 2018 Parent KCSR Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating Adjustments Consolidated KCS Revenues $ — $ 339.1 $ 12.1 $ 359.1 $ (11.3 ) $ 699.0 Operating expenses 0.7 219.2 10.6 214.4 (11.3 ) 433.6 Operating income (loss) (0.7 ) 119.9 1.5 144.7 — 265.4 Equity in net earnings (losses) of affiliates 201.9 (0.4 ) 0.7 (0.6 ) (201.8 ) (0.2 ) Interest expense (22.4 ) (19.1 ) — (7.3 ) 20.5 (28.3 ) Debt retirement costs — — — — — — Foreign exchange gain — — — 9.5 — 9.5 Other income, net 20.2 — — 0.9 (20.5 ) 0.6 Income before income taxes 199.0 100.4 2.2 147.2 (201.8 ) 247.0 Income tax expense 25.4 23.6 0.6 23.4 — 73.0 Net income 173.6 76.8 1.6 123.8 (201.8 ) 174.0 Less: Net income attributable to noncontrolling interest — — — 0.4 — 0.4 Net income attributable to Kansas City Southern and subsidiaries 173.6 76.8 1.6 123.4 (201.8 ) 173.6 Other comprehensive income 4.2 — — 0.7 (0.7 ) 4.2 Comprehensive income attributable to Kansas City Southern and subsidiaries $ 177.8 $ 76.8 $ 1.6 $ 124.1 $ (202.5 ) $ 177.8 Condensed Consolidating Statements of Comprehensive Income—(Continued) Three Months Ended September 30, 2017 Parent KCSR Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating Adjustments Consolidated KCS Revenues $ — $ 310.7 $ 9.9 $ 344.9 $ (8.9 ) $ 656.6 Operating expenses 0.8 216.5 9.6 204.8 (8.9 ) 422.8 Operating income (loss) (0.8 ) 94.2 0.3 140.1 — 233.8 Equity in net earnings (losses) of affiliates 130.2 (0.3 ) 1.5 2.2 (130.8 ) 2.8 Interest expense (20.3 ) (17.7 ) — (8.8 ) 21.6 (25.2 ) Debt retirement costs — — — — — — Foreign exchange gain — — — 0.8 — 0.8 Other income (expense), net 20.8 (0.3 ) — 0.7 (21.5 ) (0.3 ) Income before income taxes 129.9 75.9 1.8 135.0 (130.7 ) 211.9 Income tax expense 0.6 25.4 1.0 55.0 — 82.0 Net income 129.3 50.5 0.8 80.0 (130.7 ) 129.9 Less: Net income attributable to noncontrolling interest — — — 0.6 — 0.6 Net income attributable to Kansas City Southern and subsidiaries 129.3 50.5 0.8 79.4 (130.7 ) 129.3 Other comprehensive loss (0.7 ) — — (0.3 ) 0.3 (0.7 ) Comprehensive income attributable to Kansas City Southern and subsidiaries $ 128.6 $ 50.5 $ 0.8 $ 79.1 $ (130.4 ) $ 128.6 Nine Months Ended September 30, 2018 Parent KCSR Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating Adjustments Consolidated KCS Revenues $ — $ 955.0 $ 32.5 $ 1,063.4 $ (30.9 ) $ 2,020.0 Operating expenses 4.2 671.9 28.5 616.4 (30.9 ) 1,290.1 Operating income (loss) (4.2 ) 283.1 4.0 447.0 — 729.9 Equity in net earnings (losses) of affiliates 481.9 (1.1 ) 2.4 0.5 (481.9 ) 1.8 Interest expense (66.8 ) (54.2 ) — (21.5 ) 60.7 (81.8 ) Debt retirement costs — — — (2.2 ) — (2.2 ) Foreign exchange gain — — — 16.3 — 16.3 Other income, net 59.8 0.3 — 1.4 (60.7 ) 0.8 Income before income taxes 470.7 228.1 6.4 441.5 (481.9 ) 664.8 Income tax expense 4.4 48.6 1.9 142.3 — 197.2 Net income 466.3 179.5 4.5 299.2 (481.9 ) 467.6 Less: Net income attributable to noncontrolling interest — — — 1.3 — 1.3 Net income attributable to Kansas City Southern and subsidiaries 466.3 179.5 4.5 297.9 (481.9 ) 466.3 Other comprehensive income 10.2 — — 0.7 (0.7 ) 10.2 Comprehensive income attributable to Kansas City Southern and subsidiaries $ 476.5 $ 179.5 $ 4.5 $ 298.6 $ (482.6 ) $ 476.5 Condensed Consolidating Statements of Comprehensive Income—(Continued) Nine Months Ended September 30, 2017 Parent KCSR Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating Adjustments Consolidated KCS Revenues $ — $ 906.4 $ 33.0 $ 1,011.2 $ (28.1 ) $ 1,922.5 Operating expenses 4.9 647.0 29.4 585.5 (28.1 ) 1,238.7 Operating income (loss) (4.9 ) 259.4 3.6 425.7 — 683.8 Equity in net earnings (losses) of affiliates 410.8 (0.6 ) 2.7 8.2 (411.4 ) 9.7 Interest expense (61.0 ) (54.6 ) — (27.1 ) 67.8 (74.9 ) Debt retirement costs — — — — — — Foreign exchange gain — — — 61.8 — 61.8 Other income, net 66.7 0.5 — 1.3 (67.8 ) 0.7 Income before income taxes 411.6 204.7 6.3 469.9 (411.4 ) 681.1 Income tax expense 1.3 75.2 2.9 190.2 — 269.6 Net income 410.3 129.5 3.4 279.7 (411.4 ) 411.5 Less: Net income attributable to noncontrolling interest — — — 1.2 — 1.2 Net income attributable to Kansas City Southern and subsidiaries 410.3 129.5 3.4 278.5 (411.4 ) 410.3 Other comprehensive income (loss) (1.7 ) — — 1.8 (1.8 ) (1.7 ) Comprehensive income attributable to Kansas City Southern and subsidiaries $ 408.6 $ 129.5 $ 3.4 $ 280.3 $ (413.2 ) $ 408.6 Condensed Consolidating Balance Sheets September 30, 2018 Parent KCSR Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating Adjustments Consolidated KCS Assets: Current assets $ 649.5 $ 227.1 $ 6.0 $ 342.3 $ (609.0 ) $ 615.9 Investments — 3.8 2.7 40.0 — 46.5 Investments in consolidated subsidiaries 4,741.9 4.9 188.2 — (4,935.0 ) — Property and equipment (including concession assets), net — 4,409.7 166.5 4,074.0 (5.7 ) 8,644.5 Other assets 2,209.7 61.7 — 30.6 (2,199.8 ) 102.2 Total assets $ 7,601.1 $ 4,707.2 $ 363.4 $ 4,486.9 $ (7,749.5 ) $ 9,409.1 Liabilities and equity: Current liabilities $ 253.6 $ 518.9 $ 83.2 $ 220.7 $ (610.5 ) $ 465.9 Long-term debt 2,561.9 1,508.2 — 810.4 (2,199.8 ) 2,680.7 Deferred income taxes 6.6 779.1 86.0 198.9 (1.4 ) 1,069.2 Other liabilities 7.2 66.9 0.2 28.2 — 102.5 Stockholders’ equity 4,771.8 1,834.1 194.0 2,909.7 (4,937.8 ) 4,771.8 Noncontrolling interest — — — 319.0 — 319.0 Total liabilities and equity $ 7,601.1 $ 4,707.2 $ 363.4 $ 4,486.9 $ (7,749.5 ) $ 9,409.1 Condensed Consolidating Balance Sheets—(Continued) December 31, 2017 Parent KCSR Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating Adjustments Consolidated KCS Assets: Current assets $ 292.0 $ 214.1 $ 8.8 $ 475.5 $ (310.3 ) $ 680.1 Investments — 3.9 — 40.7 — 44.6 Investments in consolidated subsidiaries 4,462.4 7.4 182.2 — (4,652.0 ) — Property and equipment (including concession assets), net — 4,283.2 171.6 3,954.9 (5.9 ) 8,403.8 Other assets 2,159.6 46.8 — 252.5 (2,388.7 ) 70.2 Total assets $ 6,914.0 $ 4,555.4 $ 362.6 $ 4,723.6 $ (7,356.9 ) $ 9,198.7 Liabilities and equity: Current liabilities $ 277.9 $ 578.7 $ 94.9 $ 332.0 $ (311.8 ) $ 971.7 Long-term debt 2,066.8 1,517.2 — 1,040.3 (2,388.8 ) 2,235.5 Deferred income taxes (7.1 ) 734.8 84.0 177.0 (1.5 ) 987.2 Other liabilities 13.5 70.0 0.3 55.1 — 138.9 Stockholders’ equity 4,562.9 1,654.7 183.4 2,802.7 (4,654.8 ) 4,548.9 Noncontrolling interest — — — 316.5 — 316.5 Total liabilities and equity $ 6,914.0 $ 4,555.4 $ 362.6 $ 4,723.6 $ (7,356.9 ) $ 9,198.7 Condensed Consolidating Statements of Cash Flows Nine Months Ended September 30, 2018 Parent KCSR Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating Adjustments Consolidated KCS Operating activities: Net cash provided $ 151.2 $ 353.5 $ 0.6 $ 395.6 $ (195.1 ) $ 705.8 Investing activities: Capital expenditures — (185.3 ) (0.5 ) (211.0 ) — (396.8 ) Purchase or replacement of equipment under operating leases — (88.4 ) — (10.5 ) — (98.9 ) Property investments in MSLLC — — — (24.0 ) — (24.0 ) Investments in and advances to affiliates (6.1 ) — (6.1 ) (7.6 ) 9.5 (10.3 ) Proceeds from repayment of loans to affiliates 4,094.1 — — 125.0 (4,219.1 ) — Loans to affiliates (4,061.9 ) — — (125.0 ) 4,186.9 — Proceeds from disposal of property — 3.3 — 3.9 — 7.2 Other investing activities — (2.1 ) — (0.1 ) — (2.2 ) Net cash provided (used) 26.1 (272.5 ) (6.6 ) (249.3 ) (22.7 ) (525.0 ) Financing activities: Proceeds from short-term borrowings 4,158.0 — — — — 4,158.0 Repayment of short-term borrowings (4,506.1 ) — — — — (4,506.1 ) Proceeds from issuance of long-term debt 499.4 — — — — 499.4 Repayment of long-term debt — (2.8 ) (0.1 ) (75.8 ) — (78.7 ) Debt issuance and retirement costs paid (6.2 ) — — (1.8 ) — (8.0 ) Dividends paid (110.9 ) — — (195.1 ) 195.1 (110.9 ) Shares repurchased (163.3 ) — — — — (163.3 ) Proceeds from loans from affiliates 125.0 4,011.9 — 50.0 (4,186.9 ) — Repayment of loans from affiliates (125.0 ) (4,094.1 ) — — 4,219.1 — Contribution from affiliates — — 6.1 3.4 (9.5 ) — Other financing activities 1.8 — — — — 1.8 Net cash provided (used) (127.3 ) (85.0 ) 6.0 (219.3 ) 217.8 (207.8 ) Cash and cash equivalents: Net increase (decrease) 50.0 (4.0 ) — (73.0 ) — (27.0 ) At beginning of year 0.7 17.6 — 115.8 — 134.1 At end of period $ 50.7 $ 13.6 $ — $ 42.8 $ — $ 107.1 Condensed Consolidating Statements of Cash Flows—(Continued) Nine Months Ended September 30, 2017 Parent KCSR Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating Adjustments Consolidated KCS Operating activities: Net cash provided $ 215.1 $ 413.5 $ 0.4 $ 109.7 $ (5.0 ) $ 733.7 Investing activities: Capital expenditures — (292.6 ) (0.3 ) (154.0 ) — (446.9 ) Purchase or replacement of equipment under operating leases — (42.6 ) — — — (42.6 ) Property investments in MSLLC — — — (23.7 ) — (23.7 ) Investment in and advances to affiliates (0.5 ) — (0.5 ) (20.3 ) 1.0 (20.3 ) Proceeds from repayment of loans to affiliates 9,814.6 — — — (9,814.6 ) — Loans to affiliates (9,772.2 ) — — — 9,772.2 — Proceeds from disposal of property — 5.2 — 1.4 — 6.6 Other investing activities — (16.5 ) — 1.4 — (15.1 ) Net cash provided (used) 41.9 (346.5 ) (0.8 ) (195.2 ) (41.4 ) (542.0 ) Financing activities: Proceeds from short-term borrowings 9,772.2 — — — — 9,772.2 Repayment of short-term borrowings (9,600.9 ) — — — — (9,600.9 ) Proceeds from issuance of long-term debt — — — — — — Repayment of long-term debt — (2.6 ) (0.1 ) (17.5 ) — (20.2 ) Debt issuance and retirement costs paid — — — — — — Dividends paid (105.1 ) — — (5.0 ) 5.0 (105.1 ) Shares repurchased (320.4 ) — — — — (320.4 ) Proceeds from loans from affiliates — 9,772.2 — — (9,772.2 ) — Repayment of loans from affiliates — (9,814.6 ) — — 9,814.6 — Contribution from affiliates — — 0.5 0.5 (1.0 ) — Other financing activities 0.5 — — — — 0.5 Net cash provided (used) (253.7 ) (45.0 ) 0.4 (22.0 ) 46.4 (273.9 ) Cash and cash equivalents: Net increase (decrease) 3.3 22.0 — (107.5 ) — (82.2 ) At beginning of year 0.2 32.6 — 137.8 — 170.6 At end of period $ 3.5 $ 54.6 $ — $ 30.3 $ — $ 88.4

Revenue (Tables)

Revenue (Tables)	9 Months Ended
	Sep. 30, 2018
Revenue from Contract with Customer [Abstract]
Schedule of Disaggregation of Revenue	The following table presents revenues disaggregated by the major commodity groups as well as the product types included within the major commodity groups (in millions) . The Company believes disaggregation by product type best depicts how cash flows are affected by economic factors. See Note 14 for revenues by geographical area. Three Months Ended Nine Months Ended September 30, September 30, 2018 (ASC 606) 2017 (ASC 605) 2018 (ASC 606) 2017 (ASC 605) Chemical & Petroleum Chemicals $ 60.9 $ 57.0 $ 179.0 $ 167.6 Petroleum 64.5 47.6 171.3 137.2 Plastics 35.2 32.3 107.8 97.4 Total 160.6 136.9 458.1 402.2 Industrial & Consumer Products Forest Products 68.7 64.3 203.2 190.0 Metals & Scrap 50.1 58.9 157.9 170.5 Other 33.7 29.3 90.4 80.7 Total 152.5 152.5 451.5 441.2 Agriculture & Minerals Grain 68.5 68.6 209.1 207.9 Food Products 34.9 34.7 107.4 111.1 Ores & Minerals 5.4 5.8 16.1 14.9 Stone, Clay & Glass 7.4 6.9 22.1 21.8 Total 116.2 116.0 354.7 355.7 Energy Utility Coal 35.4 46.0 88.6 127.8 Coal & Petroleum Coke 11.9 9.4 33.3 30.7 Frac Sand 8.8 13.8 30.4 38.5 Crude Oil 17.1 5.3 38.7 17.0 Total 73.2 74.5 191.0 214.0 Intermodal 100.0 92.3 284.6 266.4 Automotive 66.2 61.4 193.3 170.2 Total Freight Revenues 668.7 633.6 1,933.2 1,849.7 Other Revenue 30.3 23.0 86.8 72.8 Total Revenues $ 699.0 $ 656.6 $ 2,020.0 $ 1,922.5
Schedule of Changes in Contract Liabilities	The following tables summarize the changes in contract liabilities (in millions) : Contract liabilities Three Months Ended September 30, Nine Months Ended September 30, 2018 (ASC 606) 2017 (ASC 605) 2018 (ASC 606) 2017 (ASC 605) Beginning balance $ 16.6 $ 5.9 $ 26.8 $ 13.7 Revenue recognized that was included in the contract liability balance at the beginning of the period (9.3 ) (4.6 ) (23.7 ) (13.7 ) Increases due to cash received, excluding amounts recognized as revenue during the period 0.9 2.2 5.1 3.5 Ending balance $ 8.2 $ 3.5 $ 8.2 $ 3.5

Earnings Per Share Data (Tables

Earnings Per Share Data (Tables)	9 Months Ended
	Sep. 30, 2018
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) : Three Months Ended Nine Months Ended September 30, September 30, 2018 2017 2018 2017 Net income available to common stockholders for purposes of computing basic and diluted earnings per share $ 173.5 $ 129.2 $ 466.1 $ 410.1 Weighted-average number of shares outstanding ( in thousands ): Basic shares 101,658 104,324 102,106 105,297 Effect of dilution 452 354 418 285 Diluted shares 102,110 104,678 102,524 105,582 Earnings per share: Basic earnings per share $ 1.71 $ 1.24 $ 4.56 $ 3.89 Diluted earnings per share $ 1.70 $ 1.23 $ 4.55 $ 3.88
Schedule of Potentially Dilutive Shares Excluded from the Calculation	Potentially dilutive shares excluded from the calculation (in thousands): Stock options excluded as their inclusion would be anti-dilutive 93 14 116 159

Property and Equipment (inclu_2

Property and Equipment (including Concession Assets) (Tables)	9 Months Ended
	Sep. 30, 2018
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment by Type	Property and equipment, including concession assets, and related accumulated depreciation and amortization are summarized below (in millions) : September 30, December 31, Land $ 219.4 $ 218.6 Concession land rights 141.2 141.2 Road property 7,507.4 7,557.1 Equipment 2,726.1 2,534.9 Technology and other 297.6 229.1 Construction in progress 196.2 223.7 Total property 11,087.9 10,904.6 Accumulated depreciation and amortization 2,443.4 2,500.8 Property and equipment (including concession assets), net $ 8,644.5 $ 8,403.8

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2018
Fair Value Disclosures [Abstract]
Schedule of Fair Value of the Company's Financial Instruments	The fair value of the Company’s financial instruments is presented in the following table (in millions) : September 30, 2018 December 31, 2017 Level 2 Level 2 Assets Foreign currency derivative instruments $ 4.4 $ 7.9 Treasury lock agreements 7.1 — Liabilities Debt instruments 2,648.0 2,377.8 Treasury lock agreements — 5.6

Derivative Instruments (Tables)

Derivative Instruments (Tables)	9 Months Ended
	Sep. 30, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Foreign Currency Derivative Instruments	Below is a summary of the Company’s 2018 and 2017 foreign currency derivative contracts (amounts in millions, except Ps./USD) : Foreign currency forward contracts Contracts to purchase Ps./pay USD Offsetting contracts to sell Ps./receive USD Notional amount Notional amount Weighted-average exchange rate (in Ps./USD) Maturity date Notional amount Notional amount Weighted-average exchange rate (in Ps./USD) Maturity date Cash received/(paid) on settlement Contracts executed in 2016 and settled in 2017 $ 340.0 Ps. 6,207.7 Ps. 18.3 1/17/2017 $ 287.0 Ps. 6,207.7 Ps. 21.6 1/17/2017 $ (53.0 ) Foreign currency zero-cost collar contracts Notional amount Weighted-average call rate outstanding options (in Ps./USD) Weighted-average put rate outstanding options (in Ps./USD) Cash received/(paid) on settlement Contracts executed in 2018 and outstanding $ 140.0 Ps. 19.3 Ps. 22.6 — Contracts executed in 2018 and settled in 2018 $ 200.0 $ 3.8 Contracts executed in 2017 and settled in 2018 $ 80.0 $ 10.0 Contracts executed in 2017 and settled in 2017 (i) $ 450.0 $ 42.2 (i) During the nine months ended September 30, 2017, the Company settled $415.0 million of zero-cost collar contracts, resulting in cash received of $38.6 million .
Schedule of Derivative Instruments in Consolidated Balance Sheets, Fair Value	The following tables present the fair value of derivative instruments included in the Consolidated Balance Sheets ( in millions ): Derivative Assets Balance Sheet Location September 30, December 31, 2017 Derivatives designated as hedging instruments: Treasury lock agreements Other assets $ 7.1 $ — Total derivatives designated as hedging instruments 7.1 — Derivatives not designated as hedging instruments: Foreign currency zero-cost collar contracts Other current assets $ 4.4 $ 7.9 Total derivatives not designated as hedging instruments 4.4 7.9 Total derivative assets $ 11.5 $ 7.9 Derivative Liabilities Balance Sheet Location September 30, December 31, 2017 Derivatives designated as hedging instruments: Treasury lock agreements Other noncurrent liabilities and deferred credits $ — $ 5.6 Total derivatives designated as hedging instruments — 5.6 Total derivative liabilities $ — $ 5.6
Schedule of Offsetting of Derivative Assets	Offsetting of Derivative Assets As of September 30, 2018 Gross Assets Gross Liabilities Net Amounts Presented in the Consolidated Balance Sheets Derivatives subject to a master netting arrangement or similar agreement $ 4.6 $ (0.2 ) $ 4.4 As of December 31, 2017 Derivatives subject to a master netting arrangement or similar agreement $ 7.9 $ — $ 7.9
Schedule of Offsetting of Derivative Liabilities	Offsetting of Derivative Liabilities As of September 30, 2018 Gross Liabilities Gross Assets Net Amounts Presented in the Consolidated Balance Sheets Derivatives subject to a master netting arrangement or similar agreement $ (0.2 ) $ 0.2 $ — As of December 31, 2017 Derivatives subject to a master netting arrangement or similar agreement $ — $ — $ —
Schedule of Derivative Instruments, Gain (Loss) in Consolidated Statements of Income and Consolidated Statements of Comprehensive Income	The following table presents the effects of derivative instruments on the Consolidated Statements of Income and Consolidated Statements of Comprehensive Income (in millions) : Derivatives in Cash Flow Hedging Relationships Amount of Gain/(Loss) Recognized in OCI on Derivative Three Months Ended Nine Months Ended September 30, September 30, 2018 2017 2018 2017 Treasury lock agreements $ 4.6 $ (0.8 ) $ 12.7 $ (4.6 ) Total $ 4.6 $ (0.8 ) $ 12.7 $ (4.6 ) Derivatives Not Designated as Hedging Instruments Location of Gain/(Loss) Recognized in Income on Derivative Amount of Gain/(Loss) Recognized in Income on Derivative Three Months Ended Nine Months Ended September 30, September 30, 2018 2017 2018 2017 Foreign currency zero-cost collar contracts Foreign exchange gain $ 6.2 $ 3.3 $ 10.3 $ 57.4 Foreign currency forward contracts Foreign exchange gain — — — (11.9 ) Total $ 6.2 $ 3.3 $ 10.3 $ 45.5

Equity (Tables)

Equity (Tables)	9 Months Ended
	Sep. 30, 2018
Equity [Abstract]
Schedule of Stockholders' Equity	The following tables summarize the changes in equity ( in millions): Three Months Ended September 30, 2018 Three Months Ended September 30, 2017 Kansas City Southern Stockholders’ Equity Noncontrolling Interest Total Equity Kansas City Southern Stockholders’ Equity Noncontrolling Interest Total Equity Beginning balance $ 4,677.6 $ 318.6 $ 4,996.2 $ 4,192.6 $ 315.2 $ 4,507.8 Net income 173.6 0.4 174.0 129.3 0.6 129.9 Other comprehensive income (loss) 4.2 — 4.2 (0.7 ) — (0.7 ) Dividends on common stock (36.6 ) — (36.6 ) (37.3 ) — (37.3 ) Dividends on $25 par preferred stock (0.1 ) — (0.1 ) (0.1 ) — (0.1 ) Share repurchases (54.8 ) — (54.8 ) (200.0 ) — (200.0 ) Options exercised and stock subscribed, net of shares withheld for employee taxes 3.5 — 3.5 2.7 — 2.7 Share-based compensation 4.4 — 4.4 4.1 — 4.1 Ending balance $ 4,771.8 $ 319.0 $ 5,090.8 $ 4,090.6 $ 315.8 $ 4,406.4 Nine Months Ended September 30, 2018 Nine Months Ended September 30, 2017 Kansas City Southern Stockholders’ Equity Noncontrolling Interest Total Equity Kansas City Southern Stockholders’ Equity Noncontrolling Interest Total Equity Beginning balance $ 4,548.9 $ 316.5 $ 4,865.4 $ 4,089.9 $ 314.6 $ 4,404.5 Cumulative-effect adjustment (i) — — — 2.5 — 2.5 Net income 466.3 1.3 467.6 410.3 1.2 411.5 Other comprehensive income (loss) 10.2 — 10.2 (1.7 ) — (1.7 ) Contribution from noncontrolling interest — 1.2 1.2 — — — Dividends on common stock (110.3 ) — (110.3 ) (107.2 ) — (107.2 ) Dividends on $25 par preferred stock (0.2 ) — (0.2 ) (0.2 ) — (0.2 ) Share repurchases (163.3 ) — (163.3 ) (320.4 ) — (320.4 ) Options exercised and stock subscribed, net of shares withheld for employee taxes 4.2 — 4.2 2.8 — 2.8 Share-based compensation 16.0 — 16.0 14.6 — 14.6 Ending balance (ii) $ 4,771.8 $ 319.0 $ 5,090.8 $ 4,090.6 $ 315.8 $ 4,406.4 (i) The Company recognized a $2.5 million net cumulative-effect adjustment to equity as of January 1, 2017, due to the adoption of ASU 2016-09, Improvements to Employee Share-Based Payment Accounting . (ii) The Company reclassified $0.7 million of stranded tax effects out of accumulated other comprehensive loss and into retained earnings during the first quarter of 2018 , due to the adoption of ASU No. 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. For additional discussion, see Note 1 - Basis of Presentation.
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: Three Months Ended Nine Months Ended September 30, September 30, 2018 2017 2018 2017 Cash dividends declared per common share $ 0.36 $ 0.36 $ 1.08 $ 1.02

Geographic Information (Tables)

Geographic Information (Tables)	9 Months Ended
	Sep. 30, 2018
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) : Three Months Ended Nine Months Ended September 30, September 30, Revenues 2018 2017 2018 2017 U.S. $ 373.3 $ 345.9 $ 1,060.2 $ 1,011.5 Mexico 325.7 310.7 959.8 911.0 Total revenues $ 699.0 $ 656.6 $ 2,020.0 $ 1,922.5 Property and equipment (including concession assets), net September 30, December 31, U.S. $ 5,375.0 $ 5,227.3 Mexico 3,269.5 3,176.5 Total property and equipment (including concession assets), net $ 8,644.5 $ 8,403.8

Condensed Consolidating Finan_2

Condensed Consolidating Financial Information (Tables)	9 Months Ended
	Sep. 30, 2018
Condensed Consolidating Financial Information [Abstract]
Condensed Consolidating Statements of Comprehensive Income	Condensed Consolidating Statements of Comprehensive Income Three Months Ended September 30, 2018 Parent KCSR Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating Adjustments Consolidated KCS Revenues $ — $ 339.1 $ 12.1 $ 359.1 $ (11.3 ) $ 699.0 Operating expenses 0.7 219.2 10.6 214.4 (11.3 ) 433.6 Operating income (loss) (0.7 ) 119.9 1.5 144.7 — 265.4 Equity in net earnings (losses) of affiliates 201.9 (0.4 ) 0.7 (0.6 ) (201.8 ) (0.2 ) Interest expense (22.4 ) (19.1 ) — (7.3 ) 20.5 (28.3 ) Debt retirement costs — — — — — — Foreign exchange gain — — — 9.5 — 9.5 Other income, net 20.2 — — 0.9 (20.5 ) 0.6 Income before income taxes 199.0 100.4 2.2 147.2 (201.8 ) 247.0 Income tax expense 25.4 23.6 0.6 23.4 — 73.0 Net income 173.6 76.8 1.6 123.8 (201.8 ) 174.0 Less: Net income attributable to noncontrolling interest — — — 0.4 — 0.4 Net income attributable to Kansas City Southern and subsidiaries 173.6 76.8 1.6 123.4 (201.8 ) 173.6 Other comprehensive income 4.2 — — 0.7 (0.7 ) 4.2 Comprehensive income attributable to Kansas City Southern and subsidiaries $ 177.8 $ 76.8 $ 1.6 $ 124.1 $ (202.5 ) $ 177.8 Condensed Consolidating Statements of Comprehensive Income—(Continued) Three Months Ended September 30, 2017 Parent KCSR Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating Adjustments Consolidated KCS Revenues $ — $ 310.7 $ 9.9 $ 344.9 $ (8.9 ) $ 656.6 Operating expenses 0.8 216.5 9.6 204.8 (8.9 ) 422.8 Operating income (loss) (0.8 ) 94.2 0.3 140.1 — 233.8 Equity in net earnings (losses) of affiliates 130.2 (0.3 ) 1.5 2.2 (130.8 ) 2.8 Interest expense (20.3 ) (17.7 ) — (8.8 ) 21.6 (25.2 ) Debt retirement costs — — — — — — Foreign exchange gain — — — 0.8 — 0.8 Other income (expense), net 20.8 (0.3 ) — 0.7 (21.5 ) (0.3 ) Income before income taxes 129.9 75.9 1.8 135.0 (130.7 ) 211.9 Income tax expense 0.6 25.4 1.0 55.0 — 82.0 Net income 129.3 50.5 0.8 80.0 (130.7 ) 129.9 Less: Net income attributable to noncontrolling interest — — — 0.6 — 0.6 Net income attributable to Kansas City Southern and subsidiaries 129.3 50.5 0.8 79.4 (130.7 ) 129.3 Other comprehensive loss (0.7 ) — — (0.3 ) 0.3 (0.7 ) Comprehensive income attributable to Kansas City Southern and subsidiaries $ 128.6 $ 50.5 $ 0.8 $ 79.1 $ (130.4 ) $ 128.6 Nine Months Ended September 30, 2018 Parent KCSR Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating Adjustments Consolidated KCS Revenues $ — $ 955.0 $ 32.5 $ 1,063.4 $ (30.9 ) $ 2,020.0 Operating expenses 4.2 671.9 28.5 616.4 (30.9 ) 1,290.1 Operating income (loss) (4.2 ) 283.1 4.0 447.0 — 729.9 Equity in net earnings (losses) of affiliates 481.9 (1.1 ) 2.4 0.5 (481.9 ) 1.8 Interest expense (66.8 ) (54.2 ) — (21.5 ) 60.7 (81.8 ) Debt retirement costs — — — (2.2 ) — (2.2 ) Foreign exchange gain — — — 16.3 — 16.3 Other income, net 59.8 0.3 — 1.4 (60.7 ) 0.8 Income before income taxes 470.7 228.1 6.4 441.5 (481.9 ) 664.8 Income tax expense 4.4 48.6 1.9 142.3 — 197.2 Net income 466.3 179.5 4.5 299.2 (481.9 ) 467.6 Less: Net income attributable to noncontrolling interest — — — 1.3 — 1.3 Net income attributable to Kansas City Southern and subsidiaries 466.3 179.5 4.5 297.9 (481.9 ) 466.3 Other comprehensive income 10.2 — — 0.7 (0.7 ) 10.2 Comprehensive income attributable to Kansas City Southern and subsidiaries $ 476.5 $ 179.5 $ 4.5 $ 298.6 $ (482.6 ) $ 476.5 Condensed Consolidating Statements of Comprehensive Income—(Continued) Nine Months Ended September 30, 2017 Parent KCSR Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating Adjustments Consolidated KCS Revenues $ — $ 906.4 $ 33.0 $ 1,011.2 $ (28.1 ) $ 1,922.5 Operating expenses 4.9 647.0 29.4 585.5 (28.1 ) 1,238.7 Operating income (loss) (4.9 ) 259.4 3.6 425.7 — 683.8 Equity in net earnings (losses) of affiliates 410.8 (0.6 ) 2.7 8.2 (411.4 ) 9.7 Interest expense (61.0 ) (54.6 ) — (27.1 ) 67.8 (74.9 ) Debt retirement costs — — — — — — Foreign exchange gain — — — 61.8 — 61.8 Other income, net 66.7 0.5 — 1.3 (67.8 ) 0.7 Income before income taxes 411.6 204.7 6.3 469.9 (411.4 ) 681.1 Income tax expense 1.3 75.2 2.9 190.2 — 269.6 Net income 410.3 129.5 3.4 279.7 (411.4 ) 411.5 Less: Net income attributable to noncontrolling interest — — — 1.2 — 1.2 Net income attributable to Kansas City Southern and subsidiaries 410.3 129.5 3.4 278.5 (411.4 ) 410.3 Other comprehensive income (loss) (1.7 ) — — 1.8 (1.8 ) (1.7 ) Comprehensive income attributable to Kansas City Southern and subsidiaries $ 408.6 $ 129.5 $ 3.4 $ 280.3 $ (413.2 ) $ 408.6
Condensed Consolidating Balance Sheets	Condensed Consolidating Balance Sheets September 30, 2018 Parent KCSR Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating Adjustments Consolidated KCS Assets: Current assets $ 649.5 $ 227.1 $ 6.0 $ 342.3 $ (609.0 ) $ 615.9 Investments — 3.8 2.7 40.0 — 46.5 Investments in consolidated subsidiaries 4,741.9 4.9 188.2 — (4,935.0 ) — Property and equipment (including concession assets), net — 4,409.7 166.5 4,074.0 (5.7 ) 8,644.5 Other assets 2,209.7 61.7 — 30.6 (2,199.8 ) 102.2 Total assets $ 7,601.1 $ 4,707.2 $ 363.4 $ 4,486.9 $ (7,749.5 ) $ 9,409.1 Liabilities and equity: Current liabilities $ 253.6 $ 518.9 $ 83.2 $ 220.7 $ (610.5 ) $ 465.9 Long-term debt 2,561.9 1,508.2 — 810.4 (2,199.8 ) 2,680.7 Deferred income taxes 6.6 779.1 86.0 198.9 (1.4 ) 1,069.2 Other liabilities 7.2 66.9 0.2 28.2 — 102.5 Stockholders’ equity 4,771.8 1,834.1 194.0 2,909.7 (4,937.8 ) 4,771.8 Noncontrolling interest — — — 319.0 — 319.0 Total liabilities and equity $ 7,601.1 $ 4,707.2 $ 363.4 $ 4,486.9 $ (7,749.5 ) $ 9,409.1 Condensed Consolidating Balance Sheets—(Continued) December 31, 2017 Parent KCSR Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating Adjustments Consolidated KCS Assets: Current assets $ 292.0 $ 214.1 $ 8.8 $ 475.5 $ (310.3 ) $ 680.1 Investments — 3.9 — 40.7 — 44.6 Investments in consolidated subsidiaries 4,462.4 7.4 182.2 — (4,652.0 ) — Property and equipment (including concession assets), net — 4,283.2 171.6 3,954.9 (5.9 ) 8,403.8 Other assets 2,159.6 46.8 — 252.5 (2,388.7 ) 70.2 Total assets $ 6,914.0 $ 4,555.4 $ 362.6 $ 4,723.6 $ (7,356.9 ) $ 9,198.7 Liabilities and equity: Current liabilities $ 277.9 $ 578.7 $ 94.9 $ 332.0 $ (311.8 ) $ 971.7 Long-term debt 2,066.8 1,517.2 — 1,040.3 (2,388.8 ) 2,235.5 Deferred income taxes (7.1 ) 734.8 84.0 177.0 (1.5 ) 987.2 Other liabilities 13.5 70.0 0.3 55.1 — 138.9 Stockholders’ equity 4,562.9 1,654.7 183.4 2,802.7 (4,654.8 ) 4,548.9 Noncontrolling interest — — — 316.5 — 316.5 Total liabilities and equity $ 6,914.0 $ 4,555.4 $ 362.6 $ 4,723.6 $ (7,356.9 ) $ 9,198.7
Condensed Consolidating Statements of Cash Flows	Condensed Consolidating Statements of Cash Flows Nine Months Ended September 30, 2018 Parent KCSR Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating Adjustments Consolidated KCS Operating activities: Net cash provided $ 151.2 $ 353.5 $ 0.6 $ 395.6 $ (195.1 ) $ 705.8 Investing activities: Capital expenditures — (185.3 ) (0.5 ) (211.0 ) — (396.8 ) Purchase or replacement of equipment under operating leases — (88.4 ) — (10.5 ) — (98.9 ) Property investments in MSLLC — — — (24.0 ) — (24.0 ) Investments in and advances to affiliates (6.1 ) — (6.1 ) (7.6 ) 9.5 (10.3 ) Proceeds from repayment of loans to affiliates 4,094.1 — — 125.0 (4,219.1 ) — Loans to affiliates (4,061.9 ) — — (125.0 ) 4,186.9 — Proceeds from disposal of property — 3.3 — 3.9 — 7.2 Other investing activities — (2.1 ) — (0.1 ) — (2.2 ) Net cash provided (used) 26.1 (272.5 ) (6.6 ) (249.3 ) (22.7 ) (525.0 ) Financing activities: Proceeds from short-term borrowings 4,158.0 — — — — 4,158.0 Repayment of short-term borrowings (4,506.1 ) — — — — (4,506.1 ) Proceeds from issuance of long-term debt 499.4 — — — — 499.4 Repayment of long-term debt — (2.8 ) (0.1 ) (75.8 ) — (78.7 ) Debt issuance and retirement costs paid (6.2 ) — — (1.8 ) — (8.0 ) Dividends paid (110.9 ) — — (195.1 ) 195.1 (110.9 ) Shares repurchased (163.3 ) — — — — (163.3 ) Proceeds from loans from affiliates 125.0 4,011.9 — 50.0 (4,186.9 ) — Repayment of loans from affiliates (125.0 ) (4,094.1 ) — — 4,219.1 — Contribution from affiliates — — 6.1 3.4 (9.5 ) — Other financing activities 1.8 — — — — 1.8 Net cash provided (used) (127.3 ) (85.0 ) 6.0 (219.3 ) 217.8 (207.8 ) Cash and cash equivalents: Net increase (decrease) 50.0 (4.0 ) — (73.0 ) — (27.0 ) At beginning of year 0.7 17.6 — 115.8 — 134.1 At end of period $ 50.7 $ 13.6 $ — $ 42.8 $ — $ 107.1 Condensed Consolidating Statements of Cash Flows—(Continued) Nine Months Ended September 30, 2017 Parent KCSR Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating Adjustments Consolidated KCS Operating activities: Net cash provided $ 215.1 $ 413.5 $ 0.4 $ 109.7 $ (5.0 ) $ 733.7 Investing activities: Capital expenditures — (292.6 ) (0.3 ) (154.0 ) — (446.9 ) Purchase or replacement of equipment under operating leases — (42.6 ) — — — (42.6 ) Property investments in MSLLC — — — (23.7 ) — (23.7 ) Investment in and advances to affiliates (0.5 ) — (0.5 ) (20.3 ) 1.0 (20.3 ) Proceeds from repayment of loans to affiliates 9,814.6 — — — (9,814.6 ) — Loans to affiliates (9,772.2 ) — — — 9,772.2 — Proceeds from disposal of property — 5.2 — 1.4 — 6.6 Other investing activities — (16.5 ) — 1.4 — (15.1 ) Net cash provided (used) 41.9 (346.5 ) (0.8 ) (195.2 ) (41.4 ) (542.0 ) Financing activities: Proceeds from short-term borrowings 9,772.2 — — — — 9,772.2 Repayment of short-term borrowings (9,600.9 ) — — — — (9,600.9 ) Proceeds from issuance of long-term debt — — — — — — Repayment of long-term debt — (2.6 ) (0.1 ) (17.5 ) — (20.2 ) Debt issuance and retirement costs paid — — — — — — Dividends paid (105.1 ) — — (5.0 ) 5.0 (105.1 ) Shares repurchased (320.4 ) — — — — (320.4 ) Proceeds from loans from affiliates — 9,772.2 — — (9,772.2 ) — Repayment of loans from affiliates — (9,814.6 ) — — 9,814.6 — Contribution from affiliates — — 0.5 0.5 (1.0 ) — Other financing activities 0.5 — — — — 0.5 Net cash provided (used) (253.7 ) (45.0 ) 0.4 (22.0 ) 46.4 (273.9 ) Cash and cash equivalents: Net increase (decrease) 3.3 22.0 — (107.5 ) — (82.2 ) At beginning of year 0.2 32.6 — 137.8 — 170.6 At end of period $ 3.5 $ 54.6 $ — $ 30.3 $ — $ 88.4

Basis of Presentation (Details)

Basis of Presentation (Details) - USD ($) $ in Millions		Mar. 31, 2018	Jan. 01, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative-effect adjustment	[1]		$ 2.5
Accumulated Other Comprehensive Loss [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative-effect adjustment		$ (0.7)
Retained Earnings [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative-effect adjustment		$ 0.7
[1]	The Company recognized a $2.5 million net cumulative-effect adjustment to equity as of January 1, 2017, due to the adoption of ASU 2016-09, Improvements to Employee Share-Based Payment Accounting.

New Accounting Pronouncements (

New Accounting Pronouncements (Details) $ in Millions	Dec. 31, 2017USD ($)
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Operating lease obligations disclosed	$ 282

Revenue Disaggregation of Reven

Revenue Disaggregation of Revenue (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Disaggregation of Revenue [Line Items]
Revenues	$ 699	$ 656.6	$ 2,020	$ 1,922.5
ASC 605 [Member]
Disaggregation of Revenue [Line Items]
Revenues		656.6		1,922.5
Freight Revenues [Member]
Disaggregation of Revenue [Line Items]
Revenues	668.7		1,933.2
Freight Revenues [Member] | ASC 605 [Member]
Disaggregation of Revenue [Line Items]
Revenues		633.6		1,849.7
Chemical and Petroleum [Member]
Disaggregation of Revenue [Line Items]
Revenues	160.6		458.1
Chemical and Petroleum [Member] | ASC 605 [Member]
Disaggregation of Revenue [Line Items]
Revenues		136.9		402.2
Chemicals [Member]
Disaggregation of Revenue [Line Items]
Revenues	60.9		179
Chemicals [Member] | ASC 605 [Member]
Disaggregation of Revenue [Line Items]
Revenues		57		167.6
Petroleum [Member]
Disaggregation of Revenue [Line Items]
Revenues	64.5		171.3
Petroleum [Member] | ASC 605 [Member]
Disaggregation of Revenue [Line Items]
Revenues		47.6		137.2
Plastics [Member]
Disaggregation of Revenue [Line Items]
Revenues	35.2		107.8
Plastics [Member] | ASC 605 [Member]
Disaggregation of Revenue [Line Items]
Revenues		32.3		97.4
Industrial and Consumer Products [Member]
Disaggregation of Revenue [Line Items]
Revenues	152.5		451.5
Industrial and Consumer Products [Member] | ASC 605 [Member]
Disaggregation of Revenue [Line Items]
Revenues		152.5		441.2
Forest Products [Member]
Disaggregation of Revenue [Line Items]
Revenues	68.7		203.2
Forest Products [Member] | ASC 605 [Member]
Disaggregation of Revenue [Line Items]
Revenues		64.3		190
Metals and Scrap [Member]
Disaggregation of Revenue [Line Items]
Revenues	50.1		157.9
Metals and Scrap [Member] | ASC 605 [Member]
Disaggregation of Revenue [Line Items]
Revenues		58.9		170.5
Other Industrial and Consumer Products [Member]
Disaggregation of Revenue [Line Items]
Revenues	33.7		90.4
Other Industrial and Consumer Products [Member] | ASC 605 [Member]
Disaggregation of Revenue [Line Items]
Revenues		29.3		80.7
Agriculture and Minerals [Member]
Disaggregation of Revenue [Line Items]
Revenues	116.2		354.7
Agriculture and Minerals [Member] | ASC 605 [Member]
Disaggregation of Revenue [Line Items]
Revenues		116		355.7
Grain [Member]
Disaggregation of Revenue [Line Items]
Revenues	68.5		209.1
Grain [Member] | ASC 605 [Member]
Disaggregation of Revenue [Line Items]
Revenues		68.6		207.9
Food Products [Member]
Disaggregation of Revenue [Line Items]
Revenues	34.9		107.4
Food Products [Member] | ASC 605 [Member]
Disaggregation of Revenue [Line Items]
Revenues		34.7		111.1
Ores and Minerals [Member]
Disaggregation of Revenue [Line Items]
Revenues	5.4		16.1
Ores and Minerals [Member] | ASC 605 [Member]
Disaggregation of Revenue [Line Items]
Revenues		5.8		14.9
Stone, Clay and Glass [Member]
Disaggregation of Revenue [Line Items]
Revenues	7.4		22.1
Stone, Clay and Glass [Member] | ASC 605 [Member]
Disaggregation of Revenue [Line Items]
Revenues		6.9		21.8
Energy [Member]
Disaggregation of Revenue [Line Items]
Revenues	73.2		191
Energy [Member] | ASC 605 [Member]
Disaggregation of Revenue [Line Items]
Revenues		74.5		214
Utility Coal [Member]
Disaggregation of Revenue [Line Items]
Revenues	35.4		88.6
Utility Coal [Member] | ASC 605 [Member]
Disaggregation of Revenue [Line Items]
Revenues		46		127.8
Coal and Petroleum Coke [Member]
Disaggregation of Revenue [Line Items]
Revenues	11.9		33.3
Coal and Petroleum Coke [Member] | ASC 605 [Member]
Disaggregation of Revenue [Line Items]
Revenues		9.4		30.7
Frac Sand [Member]
Disaggregation of Revenue [Line Items]
Revenues	8.8		30.4
Frac Sand [Member] | ASC 605 [Member]
Disaggregation of Revenue [Line Items]
Revenues		13.8		38.5
Crude Oil [Member]
Disaggregation of Revenue [Line Items]
Revenues	17.1		38.7
Crude Oil [Member] | ASC 605 [Member]
Disaggregation of Revenue [Line Items]
Revenues		5.3		17
Intermodal [Member]
Disaggregation of Revenue [Line Items]
Revenues	100		284.6
Intermodal [Member] | ASC 605 [Member]
Disaggregation of Revenue [Line Items]
Revenues		92.3		266.4
Automotive [Member]
Disaggregation of Revenue [Line Items]
Revenues	66.2		193.3
Automotive [Member] | ASC 605 [Member]
Disaggregation of Revenue [Line Items]
Revenues		61.4		170.2
Other Revenue [Member]
Disaggregation of Revenue [Line Items]
Revenues	$ 30.3		$ 86.8
Other Revenue [Member] | ASC 605 [Member]
Disaggregation of Revenue [Line Items]
Revenues		$ 23		$ 72.8

Revenue Narrative (Details)

Revenue Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
Revenue from Contract with Customer [Abstract]
Amount of revenue recognized from performace obligations partially satisfied in previous periods	$ 25.8
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Accounts receivable, net	272	$ 237.8
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2018-10-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligations that were unsatisfied or partially satisfied	$ 30.1
Performance obligations that were unsatisfied or partially satisfied, expected timing of satisfaction	1 month

Revenue Changes in Contract Lia

Revenue Changes in Contract Liabilities (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Contract Liabilities [Roll Forward]
Beginning balance	$ 16.6		$ 26.8
Revenue recognized that was included in the contract liability balance at the beginning of the period	(9.3)		(23.7)
Increases due to cash received, excluding amounts recognized as revenue during the period	0.9		5.1
Ending balance	$ 8.2		$ 8.2
ASC 605 [Member]
Contract Liabilities [Roll Forward]
Beginning balance		$ 5.9		$ 13.7
Revenue recognized that was included in the contract liability balance at the beginning of the period		(4.6)		(13.7)
Increases due to cash received, excluding amounts recognized as revenue during the period		2.2		3.5
Ending balance		$ 3.5		$ 3.5

Hurricane Harvey (Details)

Hurricane Harvey (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Unusual or Infrequent Item, or Both [Line Items]
Gain on insurance recoveries related to hurricane damage	$ 9.4	$ 0	$ 9.4	$ 0
Hurricane Harvey [Member]
Unusual or Infrequent Item, or Both [Line Items]
Partial settlement of insurance claim, gross	27		$ 27
Gain on insurance recoveries related to hurricane damage	$ 9.4

Income Taxes (Details)

Income Taxes (Details) - Domestic Tax Authority [Member] - Internal Revenue Service (IRS) [Member] - USD ($) $ in Millions	3 Months Ended		9 Months Ended	12 Months Ended
	Sep. 30, 2018	Jun. 30, 2018	Sep. 30, 2018	Dec. 31, 2017
Income Tax Disclosure [Line Items]
U.S. corporate income tax rate			21.00%	35.00%
Change in the Company's effective tax rate as a result of GILTI provisions	(0.30%)		1.10%
Discrete tax benefit recognized for reduction in the provisional tax on deemed repatriated earnings under the Tax Reform Act	$ (14.4)	$ (4.3)
Total discrete tax benefit recognized for adjustments to the provisional tax impacts of the Tax Reform Act	(16.6)
Discrete tax benefit recognized for changes in revaluation of deferred tax assets and liabilities under the Tax Reform Act	$ (2.2)

Earnings Per Share Data (Detail

Earnings Per Share Data (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Earnings Per Share Reconciliation [Abstract]
Net income available to common stockholders for purposes of computing basic earnings per share	$ 173.5	$ 129.2	$ 466.1	$ 410.1
Net income available to common stockholders for purposes of computing diluted earnings per share	$ 173.5	$ 129.2	$ 466.1	$ 410.1
Weighted-Average Number of Shares Outstanding Reconciliation [Abstract]
Basic shares	101,658	104,324	102,106	105,297
Effect of dilution	452	354	418	285
Diluted	102,110	104,678	102,524	105,582
Earnings Per Share [Abstract]
Basic earnings per share	$ 1.71	$ 1.24	$ 4.56	$ 3.89
Diluted earnings per share	$ 1.70	$ 1.23	$ 4.55	$ 3.88
Stock Options [Member]
Potentially Dilutive Shares Excluded from the Calculation [Abstract]
Stock options excluded as their inclusion would be anti-dilutive	93	14	116	159

Property and Equipment (Inclu_3

Property and Equipment (Including Concession Assets) (Details) - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Property and equipment (including concession assets), gross	$ 11,087.9	$ 10,904.6
Accumulated depreciation and amortization	2,443.4	2,500.8
Property and equipment (including concession assets), net	8,644.5	8,403.8
Accumulated amortization	578.4	638.2
Concession assets, net of accumulated amortization	2,243.9	2,208.1
Land [Member]
Property, Plant and Equipment [Line Items]
Property and equipment (including concession assets), gross	219.4	218.6
Concession land rights [Member]
Property, Plant and Equipment [Line Items]
Property and equipment (including concession assets), gross	141.2	141.2
Road property [Member]
Property, Plant and Equipment [Line Items]
Property and equipment (including concession assets), gross	7,507.4	7,557.1
Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment (including concession assets), gross	2,726.1	2,534.9
Technology and other [Member]
Property, Plant and Equipment [Line Items]
Property and equipment (including concession assets), gross	297.6	229.1
Construction in progress [Member]
Property, Plant and Equipment [Line Items]
Property and equipment (including concession assets), gross	$ 196.2	$ 223.7

Fair Value Measurements (Detail

Fair Value Measurements (Details) - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying value of Company's debt	$ 2,691.2	$ 2,274.3
Fair value of derivative assets	11.5	7.9
Fair value of derivative liabilities	0	5.6
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of debt instruments	2,648	2,377.8
Foreign Currency Derivative Instruments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of derivative assets	4.4	7.9
Fair value of derivative liabilities	0	0
Foreign Currency Derivative Instruments [Member] | 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 derivative assets	4.4	7.9
Treasury Lock Agreements [Member] | 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 derivative assets	7.1	0
Fair value of derivative liabilities	$ 0	$ 5.6

Derivative Instruments Interest

Derivative Instruments Interest Rate Derivative Instruments (Details) $ in Millions	9 Months Ended
	Sep. 30, 2018USD ($)	May 31, 2017USD ($)Treasury_Lock_Agreements
Senior Notes [Member] | 2.35% Senior Notes due May 15, 2020 [Member]
Derivative [Line Items]
Senior notes anticipated to be refinanced	$ 275
Senior notes, stated interest rate	2.35%
Senior notes, maturity date	May 15, 2020
Treasury Lock Agreements [Member] | Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member]
Derivative [Line Items]
Number of treasury lock agreements executed | Treasury_Lock_Agreements		4
Aggregate notional value of treasury lock agreements		$ 275
Weighted average interest rate of treasury lock agreements		2.85%

Derivative Instruments Summary

Derivative Instruments Summary of Foreign Currency Derivative Contracts (Details) $ in Millions, $ in Millions	Jan. 17, 2017USD ($)	Sep. 30, 2018USD ($)$ / $	Sep. 30, 2017USD ($)	Dec. 31, 2017USD ($)		Jan. 17, 2017MXN ($)$ / $	Jan. 17, 2017USD ($)$ / $
Derivative [Line Items]
Cash received/(paid) on settlement of foreign currency contracts		$ 13.8	$ (14.4)
Not Designated as Hedging Instrument [Member] | Foreign Currency Forward Contracts [Member]
Derivative [Line Items]
Notional amount of foreign currency contracts						$ 6,207.7	$ 340
Weighted-average exchange rate of foreign currency forward contracts | $ / $						18.3	18.3
Maturity date of foreign currency forward contracts	Jan. 17, 2017
Not Designated as Hedging Instrument [Member] | Foreign Currency Forward Contracts [Member] | Foreign Exchange Gain [Member]
Derivative [Line Items]
Cash received/(paid) on settlement of foreign currency contracts	$ (53)
Not Designated as Hedging Instrument [Member] | Foreign Currency Forward Contracts [Member] | Offsetting Derivative Instrument [Member]
Derivative [Line Items]
Notional amount of foreign currency contracts						$ 6,207.7	$ 287
Weighted-average exchange rate of foreign currency forward contracts | $ / $						21.6	21.6
Maturity date of foreign currency forward contracts	Jan. 17, 2017
Not Designated as Hedging Instrument [Member] | Foreign Currency Zero-Cost Collar Contracts [Member]
Derivative [Line Items]
Notional amount of foreign currency contracts		$ 140
Not Designated as Hedging Instrument [Member] | Foreign Currency Zero-Cost Collar Contracts [Member] | Call Option [Member]
Derivative [Line Items]
Weighted-average rate outstanding options | $ / $		19.3
Not Designated as Hedging Instrument [Member] | Foreign Currency Zero-Cost Collar Contracts [Member] | Put Option [Member]
Derivative [Line Items]
Weighted-average rate outstanding options | $ / $		22.6
Not Designated as Hedging Instrument [Member] | Foreign Currency Zero-Cost Collar Contracts [Member] | Contracts Executed in 2018 and Settled in 2018 [Member]
Derivative [Line Items]
Notional amount of foreign currency contracts		$ 200
Not Designated as Hedging Instrument [Member] | Foreign Currency Zero-Cost Collar Contracts [Member] | Contracts Executed in 2018 and Settled in 2018 [Member] | Foreign Exchange Gain [Member]
Derivative [Line Items]
Cash received/(paid) on settlement of foreign currency contracts		3.8
Not Designated as Hedging Instrument [Member] | Foreign Currency Zero-Cost Collar Contracts [Member] | Contracts Executed in 2017 and Settled in 2018 [Member]
Derivative [Line Items]
Notional amount of foreign currency contracts				$ 80
Not Designated as Hedging Instrument [Member] | Foreign Currency Zero-Cost Collar Contracts [Member] | Contracts Executed in 2017 and Settled in 2018 [Member] | Foreign Exchange Gain [Member]
Derivative [Line Items]
Cash received/(paid) on settlement of foreign currency contracts		$ 10
Not Designated as Hedging Instrument [Member] | Foreign Currency Zero-Cost Collar Contracts [Member] | Contracts Executed in 2017 and Settled in 2017 [Member]
Derivative [Line Items]
Notional amount of foreign currency contracts			415	450	[1]
Not Designated as Hedging Instrument [Member] | Foreign Currency Zero-Cost Collar Contracts [Member] | Contracts Executed in 2017 and Settled in 2017 [Member] | Foreign Exchange Gain [Member]
Derivative [Line Items]
Cash received/(paid) on settlement of foreign currency contracts			$ 38.6	$ 42.2	[1]
[1]	During the nine months ended September 30, 2017, the Company settled $415.0 million of zero-cost collar contracts, resulting in cash received of $38.6 million.

Derivative Instruments Fair Val

Derivative Instruments Fair Value of Derivative Instruments (Details) - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Derivatives, Fair Value [Line Items]
Derivative assets, fair value	$ 11.5	$ 7.9
Derivative liabilities, fair value	0	5.6
Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative assets, fair value	7.1	0
Derivative liabilities, fair value	0	5.6
Designated as Hedging Instrument [Member] | Treasury Lock Agreements [Member] | Other Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative assets, fair value	7.1	0
Designated as Hedging Instrument [Member] | Treasury Lock Agreements [Member] | Other Noncurrent Liabilities and Deferred Credits [Member]
Derivatives, Fair Value [Line Items]
Derivative liabilities, fair value	0	5.6
Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative assets, fair value	4.4	7.9
Not Designated as Hedging Instrument [Member] | Foreign Currency Zero-Cost Collar Contracts [Member] | Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative assets, fair value	$ 4.4	$ 7.9

Derivative Instruments Offsetti

Derivative Instruments Offsetting of Derivative Assets and Liabilities (Details) - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Offsetting of Derivative Asset [Abstract]
Net derivative assets presented in the consolidated balance sheets, fair value	$ 11.5	$ 7.9
Offsetting of Derivative Liability [Abstract]
Net derivative liabilities presented in the consolidated balance sheets, fair value	0	(5.6)
Foreign Currency Derivative Instruments [Member]
Offsetting of Derivative Asset [Abstract]
Gross derivative assets, fair value	4.6	7.9
Gross offsetting derivative liabilities, fair value	(0.2)	0
Net derivative assets presented in the consolidated balance sheets, fair value	4.4	7.9
Offsetting of Derivative Liability [Abstract]
Gross derivative liabilities, fair value	(0.2)	0
Gross offsetting derivative assets, fair value	0.2	0
Net derivative liabilities presented in the consolidated balance sheets, fair value	$ 0	$ 0

Derivative Instruments Derivati

Derivative Instruments Derivative Instruments Affecting the Consolidated Statements of Income and Consolidated Statements of Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain/(Loss) Recognized in OCI on Derivative	$ 4.6	$ (0.8)	$ 12.7	$ (4.6)
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Treasury Lock Agreements [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain/(Loss) Recognized in OCI on Derivative	4.6	(0.8)	12.7	(4.6)
Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain/(Loss) Recognized in Income on Derivative	6.2	3.3	10.3	45.5
Not Designated as Hedging Instrument [Member] | Foreign Currency Zero-Cost Collar Contracts [Member] | Foreign Exchange Gain [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain/(Loss) Recognized in Income on Derivative	6.2	3.3	10.3	57.4
Not Designated as Hedging Instrument [Member] | Foreign Currency Forward Contracts [Member] | Foreign Exchange Gain [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain/(Loss) Recognized in Income on Derivative	$ 0	$ 0	$ 0	$ (11.9)

Short-Term Borrowings (Details)

Short-Term Borrowings (Details) - KCS [Member] - Commercial Paper [Member] - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Short-Term Borrowings [Line Items]
Amount of commercial paper outstanding	$ 0	$ 345.1
Discount on commercial paper outstanding		$ 0.1
Weighted-average interest rate of commercial paper outstanding		1.846%

Long-Term Debt (Details)

Long-Term Debt (Details) - USD ($) $ in Millions	May 03, 2018	May 31, 2018	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	May 02, 2018
Debt Instrument [Line Items]
Debt retirement benefits (costs)			$ 0	$ 0	$ (2.2)	$ 0
Financing Agreement [Member] | Debt Retirement Costs [Member]
Debt Instrument [Line Items]
Debt retirement benefits (costs)		$ (2.4)
Export Development Canada Financing Agreement [Member]
Debt Instrument [Line Items]
Debt instrument, extinguishment amount		23
DVB Bank AG Financing Agreement [Member]
Debt Instrument [Line Items]
Debt instrument, extinguishment amount		$ 19.1
Senior Notes [Member] | 3.0% Senior Notes Due May 15, 2023 [Member] | KCSM [Member]
Debt Instrument [Line Items]
Debt instrument, maturity date	May 15, 2023
Debt instrument, stated interest rate	3.00%
Debt instrument, extinguishment amount	$ 5.3
Outstanding principal amount of the senior notes							$ 10.9
Redemption price expressed as a percent of principal amount	95.91%
Senior Notes [Member] | 3.0% Senior Notes Due May 15, 2023 [Member] | KCSM [Member] | Debt Retirement Costs [Member]
Debt Instrument [Line Items]
Debt retirement benefits (costs)	$ 0.2
KCS [Member]
Debt Instrument [Line Items]
Debt retirement benefits (costs)			0	$ 0	0	$ 0
KCS [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Outstanding principal amount of the senior notes			$ 2,593.5		$ 2,593.5
KCS [Member] | Senior Notes [Member] | 4.700% Senior Notes Due May 1, 2048 [Member]
Debt Instrument [Line Items]
Debt instrument, face amount	$ 500
Debt instrument, maturity date	May 1, 2048
Debt instrument, stated interest rate	4.70%
Debt instrument, unamortized discount	$ 0.6
Debt instrument, yield to maturity	4.707%
Redemption option senior notes, price expressed as a percent of principal amount	100.00%

Equity (Details)

Equity (Details) - USD ($) $ in Millions		3 Months Ended			9 Months Ended
		Sep. 30, 2018		Sep. 30, 2017	Sep. 30, 2018		Sep. 30, 2017	Jan. 01, 2017
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance		$ 4,996.2		$ 4,507.8	$ 4,865.4		$ 4,404.5
Cumulative-effect adjustment	[1]							$ 2.5
Net income		174		129.9	467.6		411.5
Other comprehensive income (loss)		4.2		(0.7)	10.2		(1.7)
Contribution from noncontrolling interest					1.2		0
Dividends on common stock		(36.6)		(37.3)	(110.3)		(107.2)
Share repurchases		(54.8)		(200)	(163.3)		(320.4)
Options exercised and stock subscribed, net of shares withheld for employee taxes		3.5		2.7	4.2		2.8
Share-based compensation		4.4		4.1	16		14.6
Ending balance		5,090.8	[2]	4,406.4	5,090.8	[2]	4,406.4
$25 Par Preferred Stock [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends on $25 par preferred stock		(0.1)		(0.1)	(0.2)		(0.2)
Share repurchases		(0.2)
Kansas City Southern Stockholders' Equity [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance		4,677.6		4,192.6	4,548.9		4,089.9
Cumulative-effect adjustment	[1]							$ 2.5
Net income		173.6		129.3	466.3		410.3
Other comprehensive income (loss)		4.2		(0.7)	10.2		(1.7)
Dividends on common stock		(36.6)		(37.3)	(110.3)		(107.2)
Share repurchases		(54.8)		(200)	(163.3)		(320.4)
Options exercised and stock subscribed, net of shares withheld for employee taxes		3.5		2.7	4.2		2.8
Share-based compensation		4.4		4.1	16		14.6
Ending balance		4,771.8	[2]	4,090.6	4,771.8	[2]	4,090.6
Kansas City Southern Stockholders' Equity [Member] | $25 Par Preferred Stock [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends on $25 par preferred stock		(0.1)		(0.1)	(0.2)		(0.2)
Noncontrolling Interest [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance		318.6		315.2	316.5		314.6
Net income		0.4		0.6	1.3		1.2
Contribution from noncontrolling interest					1.2		0
Ending balance		$ 319		$ 315.8	$ 319		$ 315.8
[1]	The Company recognized a $2.5 million net cumulative-effect adjustment to equity as of January 1, 2017, due to the adoption of ASU 2016-09, Improvements to Employee Share-Based Payment Accounting.
[2]	The Company reclassified $0.7 million of stranded tax effects out of accumulated other comprehensive loss and into retained earnings during the first quarter of 2018, due to the adoption of ASU No. 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. For additional discussion, see Note 1 - Basis of Presentation.

Equity (Parenthetical) (Details

Equity (Parenthetical) (Details) - USD ($) $ / shares in Units, $ in Millions		Sep. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jan. 01, 2017
Class of Stock [Line Items]
Cumulative-effect adjustment	[1]					$ 2.5
Retained Earnings [Member]
Class of Stock [Line Items]
Cumulative-effect adjustment			$ 0.7
Accumulated Other Comprehensive Loss [Member]
Class of Stock [Line Items]
Cumulative-effect adjustment			$ (0.7)
$25 Par Preferred Stock [Member]
Class of Stock [Line Items]
Preferred stock, par value		$ 25		$ 25	$ 25
[1]	The Company recognized a $2.5 million net cumulative-effect adjustment to equity as of January 1, 2017, due to the adoption of ASU 2016-09, Improvements to Employee Share-Based Payment Accounting.

Equity Share Repurchases (Detai

Equity Share Repurchases (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended	3 Months Ended		9 Months Ended		14 Months Ended
	Aug. 31, 2017	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018
Equity, Class of Treasury Stock [Line Items]
Shares repurchased		$ 54.8	$ 200	$ 163.3	$ 320.4
Common Stock [Member] | 2017 Share Repurchase Program [Member]
Equity, Class of Treasury Stock [Line Items]
Maximum amount of share repurchase program	$ 800
Expiration date of share repurchase program	Jun. 30, 2020
Shares repurchased (shares)		471,829		1,475,206		3,894,675
Shares repurchased		$ 54.6		$ 163.1		$ 418.3
Average price of shares repurchased		$ 115.58		$ 110.54		$ 107.39
Common Stock [Member] | Accelerated Share Repurchase Program [Member]
Equity, Class of Treasury Stock [Line Items]
Maximum amount of share repurchase program	$ 200
$25 Par Preferred Stock [Member]
Equity, Class of Treasury Stock [Line Items]
Shares repurchased (shares)		9,225
Shares repurchased		$ 0.2
Average price of shares repurchased		$ 26.11

Equity Cash Dividends on Common

Equity Cash Dividends on Common Stock (Details) - USD ($) $ / shares in Units, $ in Millions	Aug. 14, 2018	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Class of Stock [Line Items]
Cash dividends declared per common share	$ 0.36	$ 0.36	$ 0.36	$ 1.08	$ 1.02
Aggregate amount of dividends declared		$ 36.6	$ 37.3	$ 110.3	$ 107.2

Commitments and Contingencies (

Commitments and Contingencies (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Financial Guarantee [Member]
Loss Contingencies [Line Items]
Letter of credit outstanding, amount	$ 5.5		$ 5.5
Percent guarantee of unconsolidated affiliate debt	50.00%		50.00%
KCSM [Member]
Loss Contingencies [Line Items]
Total period of time for payments due under railroad Concession to Mexican government			50 years
Percentage of gross revenue payable under railroad Concession to Mexican government			1.25%
KCSM [Member] | Materials and Other Expense [Member]
Loss Contingencies [Line Items]
Concession duty expense	$ 4.6	$ 4.2	$ 13.3	$ 12.7
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%		7.00%
Debt instrument, maturity date			Nov. 1, 2026

Geographic Information (Informa

Geographic Information (Information by Geographic Area) (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018USD ($)	Sep. 30, 2017USD ($)	Sep. 30, 2018USD ($)Segments	Sep. 30, 2017USD ($)	Dec. 31, 2017USD ($)
Revenues from External Customers and Long-Lived Assets [Line Items]
Number of reportable business segments of the Company | Segments			1
Revenues	$ 699	$ 656.6	$ 2,020	$ 1,922.5
Property and equipment (including concession assets), net	8,644.5		8,644.5		$ 8,403.8
UNITED STATES
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	373.3	345.9	1,060.2	1,011.5
Property and equipment (including concession assets), net	5,375		5,375		5,227.3
MEXICO
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	325.7	$ 310.7	959.8	$ 911
Property and equipment (including concession assets), net	$ 3,269.5		$ 3,269.5		$ 3,176.5

Condensed Consolidating Finan_3

Condensed Consolidating Financial Information (Narrative) (Details) - Senior Notes [Member] $ in Millions	Sep. 30, 2018USD ($)
KCS [Member]
Condensed Financial Statements [Line Items]
Outstanding principal amount of the senior notes	$ 2,593.5
KCSR [Member]
Condensed Financial Statements [Line Items]
Outstanding principal amount of the senior notes	$ 2.9

Condensed Consolidating Stateme

Condensed Consolidating Statements of Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Condensed Statements of Comprehensive Income [Line Items]
Revenues	$ 699	$ 656.6	$ 2,020	$ 1,922.5
Operating expenses	433.6	422.8	1,290.1	1,238.7
Operating income	265.4	233.8	729.9	683.8
Equity in net earnings (losses) of affiliates	(0.2)	2.8	1.8	9.7
Interest expense	(28.3)	(25.2)	(81.8)	(74.9)
Debt retirement costs	0	0	(2.2)	0
Foreign exchange gain	9.5	0.8	16.3	61.8
Other income (expense), net	0.6	(0.3)	0.8	0.7
Income before income taxes	247	211.9	664.8	681.1
Income tax expense	73	82	197.2	269.6
Net income	174	129.9	467.6	411.5
Less: Net income attributable to noncontrolling interest	0.4	0.6	1.3	1.2
Net income attributable to Kansas City Southern and subsidiaries	173.6	129.3	466.3	410.3
Other comprehensive income (loss)	4.2	(0.7)	10.2	(1.7)
Comprehensive income attributable to Kansas City Southern and subsidiaries	177.8	128.6	476.5	408.6
Consolidating Adjustments [Member]
Condensed Statements of Comprehensive Income [Line Items]
Revenues	(11.3)	(8.9)	(30.9)	(28.1)
Operating expenses	(11.3)	(8.9)	(30.9)	(28.1)
Operating income	0	0	0	0
Equity in net earnings (losses) of affiliates	(201.8)	(130.8)	(481.9)	(411.4)
Interest expense	20.5	21.6	60.7	67.8
Debt retirement costs	0	0	0	0
Foreign exchange gain	0	0	0	0
Other income (expense), net	(20.5)	(21.5)	(60.7)	(67.8)
Income before income taxes	(201.8)	(130.7)	(481.9)	(411.4)
Income tax expense	0	0	0	0
Net income	(201.8)	(130.7)	(481.9)	(411.4)
Less: Net income attributable to noncontrolling interest	0	0	0	0
Net income attributable to Kansas City Southern and subsidiaries	(201.8)	(130.7)	(481.9)	(411.4)
Other comprehensive income (loss)	(0.7)	0.3	(0.7)	(1.8)
Comprehensive income attributable to Kansas City Southern and subsidiaries	(202.5)	(130.4)	(482.6)	(413.2)
Parent [Member]
Condensed Statements of Comprehensive Income [Line Items]
Revenues	0	0	0	0
Operating expenses	0.7	0.8	4.2	4.9
Operating income	(0.7)	(0.8)	(4.2)	(4.9)
Equity in net earnings (losses) of affiliates	201.9	130.2	481.9	410.8
Interest expense	(22.4)	(20.3)	(66.8)	(61)
Debt retirement costs	0	0	0	0
Foreign exchange gain	0	0	0	0
Other income (expense), net	20.2	20.8	59.8	66.7
Income before income taxes	199	129.9	470.7	411.6
Income tax expense	25.4	0.6	4.4	1.3
Net income	173.6	129.3	466.3	410.3
Less: Net income attributable to noncontrolling interest	0	0	0	0
Net income attributable to Kansas City Southern and subsidiaries	173.6	129.3	466.3	410.3
Other comprehensive income (loss)	4.2	(0.7)	10.2	(1.7)
Comprehensive income attributable to Kansas City Southern and subsidiaries	177.8	128.6	476.5	408.6
KCSR [Member]
Condensed Statements of Comprehensive Income [Line Items]
Revenues	339.1	310.7	955	906.4
Operating expenses	219.2	216.5	671.9	647
Operating income	119.9	94.2	283.1	259.4
Equity in net earnings (losses) of affiliates	(0.4)	(0.3)	(1.1)	(0.6)
Interest expense	(19.1)	(17.7)	(54.2)	(54.6)
Debt retirement costs	0	0	0	0
Foreign exchange gain	0	0	0	0
Other income (expense), net	0	(0.3)	0.3	0.5
Income before income taxes	100.4	75.9	228.1	204.7
Income tax expense	23.6	25.4	48.6	75.2
Net income	76.8	50.5	179.5	129.5
Less: Net income attributable to noncontrolling interest	0	0	0	0
Net income attributable to Kansas City Southern and subsidiaries	76.8	50.5	179.5	129.5
Other comprehensive income (loss)	0	0	0	0
Comprehensive income attributable to Kansas City Southern and subsidiaries	76.8	50.5	179.5	129.5
Guarantor Subsidiaries [Member]
Condensed Statements of Comprehensive Income [Line Items]
Revenues	12.1	9.9	32.5	33
Operating expenses	10.6	9.6	28.5	29.4
Operating income	1.5	0.3	4	3.6
Equity in net earnings (losses) of affiliates	0.7	1.5	2.4	2.7
Interest expense	0	0	0	0
Debt retirement costs	0	0	0	0
Foreign exchange gain	0	0	0	0
Other income (expense), net	0	0	0	0
Income before income taxes	2.2	1.8	6.4	6.3
Income tax expense	0.6	1	1.9	2.9
Net income	1.6	0.8	4.5	3.4
Less: Net income attributable to noncontrolling interest	0	0	0	0
Net income attributable to Kansas City Southern and subsidiaries	1.6	0.8	4.5	3.4
Other comprehensive income (loss)	0	0	0	0
Comprehensive income attributable to Kansas City Southern and subsidiaries	1.6	0.8	4.5	3.4
Non-Guarantor Subsidiaries [Member]
Condensed Statements of Comprehensive Income [Line Items]
Revenues	359.1	344.9	1,063.4	1,011.2
Operating expenses	214.4	204.8	616.4	585.5
Operating income	144.7	140.1	447	425.7
Equity in net earnings (losses) of affiliates	(0.6)	2.2	0.5	8.2
Interest expense	(7.3)	(8.8)	(21.5)	(27.1)
Debt retirement costs	0	0	(2.2)	0
Foreign exchange gain	9.5	0.8	16.3	61.8
Other income (expense), net	0.9	0.7	1.4	1.3
Income before income taxes	147.2	135	441.5	469.9
Income tax expense	23.4	55	142.3	190.2
Net income	123.8	80	299.2	279.7
Less: Net income attributable to noncontrolling interest	0.4	0.6	1.3	1.2
Net income attributable to Kansas City Southern and subsidiaries	123.4	79.4	297.9	278.5
Other comprehensive income (loss)	0.7	(0.3)	0.7	1.8
Comprehensive income attributable to Kansas City Southern and subsidiaries	$ 124.1	$ 79.1	$ 298.6	$ 280.3

Condensed Consolidating Balance

Condensed Consolidating Balance Sheets (Details) - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Assets:
Current assets	$ 615.9	$ 680.1
Investments	46.5	44.6
Investments in consolidated subsidiaries	0	0
Property and equipment (including concession assets), net	8,644.5	8,403.8
Other assets	102.2	70.2
Total assets	9,409.1	9,198.7
Liabilities and equity:
Current liabilities	465.9	971.7
Long-term debt	2,680.7	2,235.5
Deferred income taxes	1,069.2	987.2
Other liabilities	102.5	138.9
Stockholders' equity	4,771.8	4,548.9
Noncontrolling interest	319	316.5
Total liabilities and equity	9,409.1	9,198.7
Consolidating Adjustments [Member]
Assets:
Current assets	(609)	(310.3)
Investments	0	0
Investments in consolidated subsidiaries	(4,935)	(4,652)
Property and equipment (including concession assets), net	(5.7)	(5.9)
Other assets	(2,199.8)	(2,388.7)
Total assets	(7,749.5)	(7,356.9)
Liabilities and equity:
Current liabilities	(610.5)	(311.8)
Long-term debt	(2,199.8)	(2,388.8)
Deferred income taxes	(1.4)	(1.5)
Other liabilities	0	0
Stockholders' equity	(4,937.8)	(4,654.8)
Noncontrolling interest	0	0
Total liabilities and equity	(7,749.5)	(7,356.9)
Parent [Member]
Assets:
Current assets	649.5	292
Investments	0	0
Investments in consolidated subsidiaries	4,741.9	4,462.4
Property and equipment (including concession assets), net	0	0
Other assets	2,209.7	2,159.6
Total assets	7,601.1	6,914
Liabilities and equity:
Current liabilities	253.6	277.9
Long-term debt	2,561.9	2,066.8
Deferred income taxes	6.6	(7.1)
Other liabilities	7.2	13.5
Stockholders' equity	4,771.8	4,562.9
Noncontrolling interest	0	0
Total liabilities and equity	7,601.1	6,914
KCSR [Member]
Assets:
Current assets	227.1	214.1
Investments	3.8	3.9
Investments in consolidated subsidiaries	4.9	7.4
Property and equipment (including concession assets), net	4,409.7	4,283.2
Other assets	61.7	46.8
Total assets	4,707.2	4,555.4
Liabilities and equity:
Current liabilities	518.9	578.7
Long-term debt	1,508.2	1,517.2
Deferred income taxes	779.1	734.8
Other liabilities	66.9	70
Stockholders' equity	1,834.1	1,654.7
Noncontrolling interest	0	0
Total liabilities and equity	4,707.2	4,555.4
Guarantor Subsidiaries [Member]
Assets:
Current assets	6	8.8
Investments	2.7	0
Investments in consolidated subsidiaries	188.2	182.2
Property and equipment (including concession assets), net	166.5	171.6
Other assets	0	0
Total assets	363.4	362.6
Liabilities and equity:
Current liabilities	83.2	94.9
Long-term debt	0	0
Deferred income taxes	86	84
Other liabilities	0.2	0.3
Stockholders' equity	194	183.4
Noncontrolling interest	0	0
Total liabilities and equity	363.4	362.6
Non-Guarantor Subsidiaries [Member]
Assets:
Current assets	342.3	475.5
Investments	40	40.7
Investments in consolidated subsidiaries	0	0
Property and equipment (including concession assets), net	4,074	3,954.9
Other assets	30.6	252.5
Total assets	4,486.9	4,723.6
Liabilities and equity:
Current liabilities	220.7	332
Long-term debt	810.4	1,040.3
Deferred income taxes	198.9	177
Other liabilities	28.2	55.1
Stockholders' equity	2,909.7	2,802.7
Noncontrolling interest	319	316.5
Total liabilities and equity	$ 4,486.9	$ 4,723.6

Condensed Consolidating State_2

Condensed Consolidating Statements of Cash Flows (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Operating activities:
Net cash provided	$ 705.8	$ 733.7
Investing activities:
Capital expenditures	(396.8)	(446.9)
Purchase or replacement of equipment under operating leases	(98.9)	(42.6)
Property investments in MSLLC	(24)	(23.7)
Investments in and advances to affiliates	(10.3)	(20.3)
Proceeds from repayment of loans to affiliates	0	0
Loans to affiliates	0	0
Proceeds from disposal of property	7.2	6.6
Other investing activities	(2.2)	(15.1)
Net cash provided (used)	(525)	(542)
Financing activities:
Proceeds from short-term borrowings	4,158	9,772.2
Repayment of short-term borrowings	(4,506.1)	(9,600.9)
Proceeds from issuance of long-term debt	499.4	0
Repayment of long-term debt	(78.7)	(20.2)
Debt issuance and retirement costs paid	(8)	0
Dividends paid	(110.9)	(105.1)
Shares repurchased	(163.3)	(320.4)
Proceeds from loans from affiliates	0	0
Repayment of loans from affiliates	0	0
Contribution from affiliates	0	0
Other financing activities	1.8	0.5
Net cash used for financing activities	(207.8)	(273.9)
Cash and cash equivalents:
Net decrease during each period	(27)	(82.2)
At beginning of year	134.1	170.6
At end of period	107.1	88.4
Consolidating Adjustments [Member]
Operating activities:
Net cash provided	(195.1)	(5)
Investing activities:
Capital expenditures	0	0
Purchase or replacement of equipment under operating leases	0	0
Property investments in MSLLC	0	0
Investments in and advances to affiliates	9.5	1
Proceeds from repayment of loans to affiliates	(4,219.1)	(9,814.6)
Loans to affiliates	4,186.9	9,772.2
Proceeds from disposal of property	0	0
Other investing activities	0	0
Net cash provided (used)	(22.7)	(41.4)
Financing activities:
Proceeds from short-term borrowings	0	0
Repayment of short-term borrowings	0	0
Proceeds from issuance of long-term debt	0	0
Repayment of long-term debt	0	0
Debt issuance and retirement costs paid	0	0
Dividends paid	195.1	5
Shares repurchased	0	0
Proceeds from loans from affiliates	(4,186.9)	(9,772.2)
Repayment of loans from affiliates	4,219.1	9,814.6
Contribution from affiliates	(9.5)	(1)
Other financing activities	0	0
Net cash used for financing activities	217.8	46.4
Cash and cash equivalents:
Net decrease during each period	0	0
At beginning of year	0	0
At end of period	0	0
Parent [Member]
Operating activities:
Net cash provided	151.2	215.1
Investing activities:
Capital expenditures	0	0
Purchase or replacement of equipment under operating leases	0	0
Property investments in MSLLC	0	0
Investments in and advances to affiliates	(6.1)	(0.5)
Proceeds from repayment of loans to affiliates	4,094.1	9,814.6
Loans to affiliates	(4,061.9)	(9,772.2)
Proceeds from disposal of property	0	0
Other investing activities	0	0
Net cash provided (used)	26.1	41.9
Financing activities:
Proceeds from short-term borrowings	4,158	9,772.2
Repayment of short-term borrowings	(4,506.1)	(9,600.9)
Proceeds from issuance of long-term debt	499.4	0
Repayment of long-term debt	0	0
Debt issuance and retirement costs paid	(6.2)	0
Dividends paid	(110.9)	(105.1)
Shares repurchased	(163.3)	(320.4)
Proceeds from loans from affiliates	125	0
Repayment of loans from affiliates	(125)	0
Contribution from affiliates	0	0
Other financing activities	1.8	0.5
Net cash used for financing activities	(127.3)	(253.7)
Cash and cash equivalents:
Net decrease during each period	50	3.3
At beginning of year	0.7	0.2
At end of period	50.7	3.5
KCSR [Member]
Operating activities:
Net cash provided	353.5	413.5
Investing activities:
Capital expenditures	(185.3)	(292.6)
Purchase or replacement of equipment under operating leases	(88.4)	(42.6)
Property investments in MSLLC	0	0
Investments in and advances to affiliates	0	0
Proceeds from repayment of loans to affiliates	0	0
Loans to affiliates	0	0
Proceeds from disposal of property	3.3	5.2
Other investing activities	(2.1)	(16.5)
Net cash provided (used)	(272.5)	(346.5)
Financing activities:
Proceeds from short-term borrowings	0	0
Repayment of short-term borrowings	0	0
Proceeds from issuance of long-term debt	0	0
Repayment of long-term debt	(2.8)	(2.6)
Debt issuance and retirement costs paid	0	0
Dividends paid	0	0
Shares repurchased	0	0
Proceeds from loans from affiliates	4,011.9	9,772.2
Repayment of loans from affiliates	(4,094.1)	(9,814.6)
Contribution from affiliates	0	0
Other financing activities	0	0
Net cash used for financing activities	(85)	(45)
Cash and cash equivalents:
Net decrease during each period	(4)	22
At beginning of year	17.6	32.6
At end of period	13.6	54.6
Guarantor Subsidiaries [Member]
Operating activities:
Net cash provided	0.6	0.4
Investing activities:
Capital expenditures	(0.5)	(0.3)
Purchase or replacement of equipment under operating leases	0	0
Property investments in MSLLC	0	0
Investments in and advances to affiliates	(6.1)	(0.5)
Proceeds from repayment of loans to affiliates	0	0
Loans to affiliates	0	0
Proceeds from disposal of property	0	0
Other investing activities	0	0
Net cash provided (used)	(6.6)	(0.8)
Financing activities:
Proceeds from short-term borrowings	0	0
Repayment of short-term borrowings	0	0
Proceeds from issuance of long-term debt	0	0
Repayment of long-term debt	(0.1)	(0.1)
Debt issuance and retirement costs paid	0	0
Dividends paid	0	0
Shares repurchased	0	0
Proceeds from loans from affiliates	0	0
Repayment of loans from affiliates	0	0
Contribution from affiliates	6.1	0.5
Other financing activities	0	0
Net cash used for financing activities	6	0.4
Cash and cash equivalents:
Net decrease during each period	0	0
At beginning of year	0	0
At end of period	0	0
Non-Guarantor Subsidiaries [Member]
Operating activities:
Net cash provided	395.6	109.7
Investing activities:
Capital expenditures	(211)	(154)
Purchase or replacement of equipment under operating leases	(10.5)	0
Property investments in MSLLC	(24)	(23.7)
Investments in and advances to affiliates	(7.6)	(20.3)
Proceeds from repayment of loans to affiliates	125	0
Loans to affiliates	(125)	0
Proceeds from disposal of property	3.9	1.4
Other investing activities	(0.1)	1.4
Net cash provided (used)	(249.3)	(195.2)
Financing activities:
Proceeds from short-term borrowings	0	0
Repayment of short-term borrowings	0	0
Proceeds from issuance of long-term debt	0	0
Repayment of long-term debt	(75.8)	(17.5)
Debt issuance and retirement costs paid	(1.8)	0
Dividends paid	(195.1)	(5)
Shares repurchased	0	0
Proceeds from loans from affiliates	50	0
Repayment of loans from affiliates	0	0
Contribution from affiliates	3.4	0.5
Other financing activities	0	0
Net cash used for financing activities	(219.3)	(22)
Cash and cash equivalents:
Net decrease during each period	(73)	(107.5)
At beginning of year	115.8	137.8
At end of period	$ 42.8	$ 30.3