Leased Facilities - Additional Information (Detail) (CAD) In Millions, unless otherwise specified	Dec. 31, 2013
Operating Leased Assets [Line Items]
Minimum undiscounted lease commitments	389	[1]

[1] Net rental cost under cancelable and non-cancelable operating leases incurred in 2013 was $287 million (2012 - $271 million, 2011 - $226 million). Related rental income was not material.