provisions (Tables)

6 Months Ended

Jun. 30, 2020

provisions

Schedule of other provisions

	Asset
	retirement		Employee-		Writtenput
(millions)	obligation		related		options		Other		Total
As at April 1, 2020	$	497	$	41	$	182	$	122	$	842
Additions		—		10		—		75		85
Reversal		—		—		(70)		(2)		(72)
Use		(1)		(9)		(103)		(42)		(155)
Interest effect		4		—		—		—		4
Effects of foreign exchange, net		—		(1)		(6)		(1)		(8)
As at June 30, 2020	$	500	$	41	$	3	$	152	$	696
As at January 1, 2020	$	495	$	64	$	196	$	123	$	878
Additions		—		20		—		95		115
Reversal		—		—		(103)		(16)		(119)
Use		(2)		(43)		(104)		(51)		(200)
Interest effect		7		—		2		—		9
Effects of foreign exchange, net		—		—		12		1		13
As at June 30, 2020	$	500	$	41	$	3	$	152	$	696
Current	$	10	$	35	$	—	$	38	$	83
Non-current		490		6		3		114		613
As at June 30, 2020	$	500	$	41	$	3	$	152	$	696