other comprehensive income

6 Months Ended

Jun. 30, 2018

other comprehensive income

other comprehensive income

11other comprehensive income

	Items that may subsequently be reclassified to income																							Item never reclassified to income							Item never reclassified to income
	Change in unrealized fair value of derivatives designated as cash flow hedges in current period (Note 4(f))
	Derivatives used to manage currency risks									Derivatives used to manage other market risk										Cumulative				Change in
Periods ended June 30 (millions)	Gains (losses) arising			Prior period (gains) losses transferred to net income			Total			Gains (losses) arising		Prior period (gains) losses transferred to net income			Total		Total			foreign currency translation adjustment				measurement of investment financial assets			Accumulated other comp. income				Employee defined benefit plan re-measurements		Other comp. income
THREE-MONTH
Accumulated balance as at April 1, 2017							$	(30	)						$	1	$	(29	)	$		51		$		11	$		33
Other comprehensive income (loss)
Amount arising	$	(29	)	$	50		21			$	9	$	(4	)	5		26			—				2			28				$	26	$	54
Income taxes	$	(2	)	$	8		6			$	2	$	(1	)	1		7			—				—			7				8		15
Net							15								4		19			—				2			21				$	18	$	39
Accumulated balance as at June 30, 2017							$	(15	)						$	5	$	(10	)	$	51			$	13		$	54
Accumulated balance as at April 1, 2018							$	(12	)						$	4	$	(8	)	$	49			$	1		$	42
Other comprehensive income (loss)
Amount arising	$	21		$	(52	)	(31		)	$	8	$	(5	)	3		(28		)	(17			)	—			(45			)	$	143	$	98
Income taxes	$	—		$	(7	)	(7		)	$	2	$	(1	)	1		(6		)	—				—			(6			)	38		32
Net							(24		)						2		(22		)	(17			)	—			(39			)	$	105	$	66
Accumulated balance as at June 30, 2018							$	(36	)						$	6	$	(30	)	$	32			$	1		$	3

	Items that may subsequently be reclassified to income																								Item never reclassified to income						Item never reclassified to income
	Change in unrealized fair value of derivatives designated as cash flow hedges in current period (Note 4(f))
	Derivatives used to manage currency risks									Derivatives used to manage other market risk												Cumulative			Change in
Periods ended June 30 (millions)	Gains (losses) arising			Prior period (gains) losses transferred to net income			Total			Gains (losses) arising			Prior period (gains) losses transferred to net income			Total			Total			foreign currency translation adjustment			measurement of investment financial assets			Accumulated other comp. income			Employee defined benefit plan re-measurements		Other comp. income
SIX-MONTH
Accumulated balance as at January 1, 2017
As previously reported							$	(22	)							$	2		$	(20	)	$	48		$	16		$	44
IFRS 9, Financial Instruments transitional amount (Note 2(a))							—									—			—			—			(3		)	(3		)
As adjusted							(22		)							2			(20		)	48			13			41
Other comprehensive income (loss)
Amount arising	$	(50	)	$	60		10			$	9		$	(5	)	4			14			3			—			17			$	118	$	135
Income taxes	$	(6	)	$	9		3			$	2		$	(1	)	1			4			—			—			4			32		36
Net							7									3			10			3			—			13			$	86	$	99
Accumulated balance as at June 30, 2017							$	(15	)							$	5		$	(10	)	$	51		$	13		$	54
Accumulated balance as at January 1, 2018
As previously reported							$	(9	)							$	8		$	(1	)	$	53		$	5		$	57
IFRS 9, Financial Instruments transitional amount (Note 2(a))							—									—			—			—			(4		)	(4		)
As adjusted							(9		)							8			(1		)	53			1			53
Other comprehensive income (loss)
Amount arising	$	77		$	(114	)	(37		)	$	(1	)	$	(2	)	(3		)	(40		)	(21		)	—			(61		)	$	81	$	20
Income taxes	$	10		$	(20	)	(10		)	$	(1	)	$	—		(1		)	(11		)	—			—			(11		)	19		8
Net							(27		)							(2		)	(29		)	(21		)	—			(50		)	$	62	$	12
Accumulated balance as at June 30, 2018							$	(36	)							$	6		$	(30	)	$	32		$	1		$	3
Attributable to:
Common Shares																												$	6
Non-controlling interests																												(3		)
																												$	3