Income Taxes (Tables)

12 Months Ended

Feb. 29, 2020

Income Tax Disclosure [Abstract]

Components of Provision for (Recovery of) Income Tax and Income from Continuing Operations Before Income Tax

The difference between the amount of the provision for (recovery of) income taxes and the amount computed by multiplying income (loss) before income taxes by the statutory Canadian tax rate is reconciled as follows:

	For the Years Ended
	February 29, 2020			February 28, 2019			February 28, 2018
Statutory Canadian tax rate	26.5		%	26.5		%	26.5		%
Expected provision for (recovery of) income taxes	$	(39)		$	20		$	108
Differences in income taxes resulting from:
Valuation allowance	41			(55)			(169)
Investment tax credits	(10)			(10)			(3)
Change in unrecognized income tax benefits	(12)			9			8
Foreign tax rate differences	3			(1)			(6)
Effect of adjustments to deferred tax amounts for enacted changes resulting from U.S. tax reform	—			—			67
Non-deductible permanent differences	15			19			4
Goodwill impairment	6			—			—
Other differences	1			2			(9)
Withholding tax on unremitted earnings	(1)			—			1
	$	4		$	(16)		$	1

Income (Loss) from Continuing Operations Before Income Taxes

	For the Years Ended
	February 29, 2020		February 28, 2019		February 28, 2018
Income (loss) before income taxes:
Canadian	$	15	$	63	$	413
Foreign	(163)		14		(7)
	$	(148)	$	77	$	406

Provision for Income Taxes from Continuing Operations

The provision for (recovery of) income taxes consists of the following:

	For the Years Ended
	February 29, 2020		February 28, 2019		February 28, 2018
Current
Canadian	$	2	$	2	$	1
Foreign	3		7		7
Deferred
Canadian	—		—		—
Foreign	(1)		(25)		(7)
	$	4	$	(16)	$	1

Components of Deferred Income Tax Assets and Liabilities

Deferred income tax assets and liabilities consist of the following temporary differences:

	As at
	February 29, 2020		February 28, 2019
Assets
Property, plant, equipment and intangibles assets	$	174	$	175
Non-deductible reserves	65		89
Minimum taxes	267		264
Convertible Debentures (see Note 7)	1		15
Research and development	327		304
Tax loss carryforwards	419		414
Other	117		98
Deferred income tax assets	1,370		1,359
Valuation allowance	1,223		1,192
Deferred income tax assets net of valuation allowance	147		167
Liabilities
Property, plant, equipment and intangibles assets	(147)		(167)
Deferred income tax liabilities	(147)		(167)
Net deferred income tax asset (liability)	$	—	$	—
Deferred income tax asset	$	—	$	2
Deferred income tax liability	—		(2)
	$	—	$	—

Reconciliation of Beginning and Ending Amount of Unrecognized Income Tax Benefits

The Company’s total unrecognized income tax benefits as at February 29, 2020 and February 28, 2019 were $72 million and $84 million, respectively. A reconciliation of the beginning and ending amount of unrecognized income tax benefits that, if recognized, would affect the Company’s effective income tax rate is as follows:

	For the Years Ended
	February 29, 2020		February 28, 2019		February 28, 2018
Unrecognized income tax benefits, opening balance	$	84	$	73	$	65
Increase for income tax positions of prior years	2		10		4
Increase for income tax positions of current year	1		5		4
Settlement of tax positions	(15)		(4)		—
Unrecognized income tax benefits, ending balance	$	72	$	84	$	73

Summary of Open Tax Years by Major Jurisdiction

A summary of open tax years by major jurisdiction is presented below:

Jurisdiction
Canada (1)	Fiscal 2011 - 2020
United States (2)	Fiscal 2017 - 2020
United Kingdom	Fiscal 2019 - 2020

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⁽¹⁾ Includes federal as well as provincial jurisdictions, as applicable.

⁽²⁾  Pertains to federal tax years. Certain state jurisdictions remain open from fiscal 2015 through fiscal 2020.

Summary of Net Operating Losses and Tax Credits Carryforward

As at February 29, 2020, the Company has the following net operating loss carryforwards and tax credits, which are scheduled to expire in the following years:

Year of Expiry	Net Operating Losses		Capital Losses		Research and Development Tax Credits (1)		Minimum Taxes
2029	$	10	$	—	$	—	$	—
2030	—		—		5		109
2031	26		—		5		128
2032	78		—		3		27
2033	98		—		111		2
2034	94		—		109		1
2035	11		—		51		—
2036	399		—		40		—
2037	472		—		25		—
2038	185		—		19		—
2039	—		—		18		—
2040	68		—		13		—
Indefinite	173		31		21		—
	$	1,614	$	31	$	420	$	267

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⁽¹⁾ Includes federal, provincial and state balances.