CONSOLIDATED BALANCE SHEETS - CAD CAD in Millions	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current assets
Cash and cash equivalents	CAD 338	CAD 164
Accounts receivable, net	687	591
Materials and supplies	152	184
Other current assets	97	70
Total current assets	1,274	1,009
Investments	182	194
Properties	17,016	16,689
Goodwill and intangible assets	187	202	CAD 211
Pension asset	1,407	1,070
Other assets	69	57
Total assets	20,135	19,221
Current liabilities
Accounts payable and accrued liabilities	1,238	1,322
Long-term debt maturing within one year	746	25
Total current liabilities	1,984	1,347
Pension and other benefit liabilities	749	734
Other long-term liabilities	231	284
Long-term debt	7,413	8,659
Deferred income taxes	3,321	3,571
Total liabilities	13,698	14,595
Shareholders’ equity
Share capital	2,032	2,002
Additional paid-in capital	43	52
Accumulated other comprehensive loss	(1,741)	(1,799)	(1,477)
Retained earnings	6,103	4,371
Total Shareholders' equity	6,437	4,626	CAD 4,796	CAD 5,610
Total liabilities and shareholders’ equity	CAD 20,135	CAD 19,221

Sum of the carrying values as of the balance sheet date of obligations incurred through that date and due within one year (or the operating cycle, if longer), including liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received, taxes, interest, rent and utilities, accrued salaries and bonuses, payroll taxes and fringe benefits.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.