INTERIM CONSOLIDATED BALANCE SHEETS AS AT (unaudited) - CAD ($) $ in Millions	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016
Current assets
Cash and cash equivalents	$ 51		$ 338
Accounts receivable, net	686		687
Materials and supplies	160		152
Other current assets	103		97
Total current assets	1,000		1,274
Investments	193		182
Properties	17,616		17,016
Goodwill and intangible assets	196		187
Pension asset	1,616		1,407
Other assets	64		69
Total assets	20,685		20,135
Current liabilities
Accounts payable and accrued liabilities	1,213		1,238
Long-term debt maturing within one year	547		746
Total current liabilities	1,760		1,984
Pension and other benefit liabilities	749		749
Other long-term liabilities	218		231
Long-term debt	7,936		7,413
Deferred income taxes	3,448		3,321
Total liabilities	14,111		13,698
Shareholders’ equity
Share capital	2,013		2,032
Additional paid-in capital	45		43
Accumulated other comprehensive loss	(1,673)	$ (1,705)	(1,741)	$ (1,740)	$ (1,769)	$ (1,799)
Retained earnings	6,189		6,103
Total shareholders' equity	6,574		6,437	$ 5,333		$ 4,626
Total liabilities and shareholders’ equity	$ 20,685		$ 20,135