Provisions and Other Liabilities (Tables)

12 Months Ended

Dec. 31, 2020

Other Provisions, Contingent Liabilities And Contingent Assets [Abstract]

Summary of Provisions and Other Liabilities

(CAD$ in millions)	December 31, 2020		December 31, 2019
Provisions (a)	$	3,484	$	2,345
Obligation to Neptune Bulk Terminals (b)	111		—
Derivative liabilities (net of current portion of $6 (2019 - $2))	26		31
ENAMI preferential dividend	30		82
IMSA payable	60		58
Other	20		20
	$	3,731	$	2,536

Summary of Movements in Provisions

The following table summarizes the movements in provisions for the year ended December 31, 2020:

(CAD$ in millions)	Decommissioning and Restoration Provisions		Other		Total
As at January 1, 2020	$	2,234	$	236	$	2,470
Settled during the year	(58)		(39)		(97)
Change in discount rate	649		—		649
Change in amount and timing of cash flows	390		116		506
Accretion (Note 10)	114		4		118
Other	18		—		18
Changes in foreign exchange rates	(5)		(2)		(7)
As at December 31, 2020	3,342		315		3,657
Less current portion of provisions (Note 18)	(124)		(49)		(173)
Long-term provisions	$	3,218	$	266	$	3,484