The net income of the acquiree included in the company's 2009 Consolidated Statement of Income.

No definition available.

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The revenues of the acquiree included in the company's 2009 Consolidated Statement of Income.

+ References

No definition available.

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- Definition

Length (in miles) of Elgin, Joliet and Eastern Railway Company (EJAndE) short-line acquired during the period.

+ References

No definition available.

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Amount of direct costs of the business combination including legal, accounting, and other costs incurred to consummate the business acquisition.

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- Definition

The total purchase price of the acquired entity. This includes cash paid to equity interest holders of the acquired entity, fair value of debt and equity securities issued to equity holders of the acquired entity, and transaction costs paid to third parties to consummate the acquisition.

+ References

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- Definition

The amount of acquisition cost of a business combination allocated to current assets.

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- Definition

The amount of acquisition cost of a business combination allocated to current liabilities of the acquired entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-Paragraph 51

-Subparagraph e

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Publisher FASB

-Name Emerging Issues Task Force (EITF)

-Number 98-1

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The amount of acquisition cost of a business combination allocated to other noncurrent liabilities of the acquired entity.

+ References

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- Definition

The amount of acquisition cost of a business combination allocated to property, plant and equipment to be used in ongoing operations.

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- Definition

This element represents the acquisition-date fair value of the total consideration transferred which consists of the sum of the acquisition-date fair values of the assets transferred by the acquirer, the liabilities incurred by the acquirer to former owners of the acquiree, and the equity interests issued by the acquirer.

+ References

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- Definition

Disclosure of accounting policy for completed business combinations (purchase method, acquisition method or combination of entities under common control). This accounting policy may include a general discussion of the purchase method or acquisition method of accounting (including for example, the treatment accorded contingent consideration, the identification of assets and liabilities, the purchase price allocation process, how the fair values of acquired assets and liabilities are determined) and the entity's specific application thereof. An entity that acquires another entity in a leveraged buyout transaction generally discloses the accounting policy followed by the acquiring entity in determining the basis used to value its interest in the acquired entity, and the rationale for that accounting policy.

+ References

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-Publisher FASB

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-Subparagraph a, b, c, d

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-Subparagraph (a)-(d)

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The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-Glossary Investing Activities

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Acquisition (Details) In Millions, unless otherwise specified	12 Months Ended			0 Months Ended	1 Months Ended
	Dec. 31, 2011 CAD	Dec. 31, 2010 CAD	Dec. 31, 2009 CAD	Dec. 31, 2009 Elgin, Joliet and Eastern Railway Company (EJ and E) [Member] CAD	Jan. 31, 2009 Elgin, Joliet and Eastern Railway Company (EJ and E) [Member] USD ($)	Jan. 31, 2009 Elgin, Joliet and Eastern Railway Company (EJ and E) [Member] CAD
Acquisition [Line Items]
Accounting method used to account for this acquisition				The Company accounted for the acquisition using the acquisition method of accounting pursuant to FASB ASC 805, “Business Combinations,” which the Company adopted on January 1, 2009.
Approximate costs incurred in 2009 to acquire EJ and E			49	49
2009 revenues of EJ And E included in the Company's Consolidated Statement of Income				74
2009 net income of EJ and E included in the Company's Consolidated Statement of Income				12
Length of short-line railway of EJ and E (in miles)					198	198
Consideration
Cash	0	0	373		300	373
Fair value of total consideration transferred					300
Recognized amounts of identifiable assets acquired and liabilities assumed [Abstract]
Current assets					4
Properties					310
Current liabilities					(4)
Other noncurrent liabilities					(10)
Total identifiable net assets					$ 300