Mitel Networks (MITL) 10-Q 5 Dec 13 2014 Q2 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	6 Months Ended
	Oct. 31, 2013	Dec. 03, 2013
Document Information [Line Items]	'	'
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	31-Oct-13	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q2	'
Trading Symbol	'MITL	'
Entity Registrant Name	'MITEL NETWORKS CORP	'
Entity Central Index Key	'0001170534	'
Current Fiscal Year End Date	'--04-30	'
Entity Filer Category	'Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	53,947,354

CONSOLIDATED_BALANCE_SHEETS

CONSOLIDATED BALANCE SHEETS (USD $)	Oct. 31, 2013		Apr. 30, 2013
In Millions, unless otherwise specified
Current assets:	'		'
Cash and cash equivalents	$70.50		$69
Accounts receivable (net of allowance for doubtful accounts of $5.5 and $6.4, respectively)	116.7		123
Sales-type lease receivables (net) (note 4)	14.3		15.4
Inventories (net) (note 5)	24.3		27.9
Deferred tax asset	15.5		17.2
Other current assets (note 6)	30.8		32.4
Assets, Current, Total	272.1		284.9
Non-current portion of sales-type lease receivables (net) (note 4)	14.4		18.7
Deferred tax asset	119.9		119.7
Property and equipment (net)	29.2		30.1
Identifiable intangible assets (net) (note 7)	54.9		55.9
Goodwill	147.3		132.6
Other non-current assets	16.1		14.5
Assets, Total	653.9		656.4
Current liabilities:	'		'
Accounts payable and accrued liabilities (note 8)	91.3		101.1
Current portion of deferred revenue	38.6		32.4
Current portion of long-term debt (note 10)	21.3		6.5
Liabilities, Current, Total	151.2		140
Long-term debt	267.6		281.6
Lease recourse liability (note 4)	3.7		3.8
Long-term portion of deferred revenue	16.1		14.8
Deferred tax liability	17		23.4
Pension liability (note 11)	71.2		90.5
Other non-current liabilities	19.1		18.3
Liabilities, Total	545.9		572.4
Commitments, guarantees and contingencies (note 12)	'		'
Shareholders' equity:	'		'
Common shares, without par value-issued and outstanding: 53.9 and 53.7, respectively (note 13)	811.5		810.4
Preferred shares-issued and outstanding: nil	'		'
Warrants (note 14)	39.1	[1]	39.1	[1]
Additional paid-in capital	35.7		33.8
Accumulated deficit	-684.2		-685.8
Accumulated other comprehensive loss	-94.1		-113.5
Stockholders' Equity Attributable to Parent, Total	108		84
Liabilities and Equity, Total	$653.90		$656.40
[1]	At October 31, 2013, there were 2.48 million warrants outstanding that were issued in connection with government funding (April 30, 2013-2.48 million). The warrants have an exercise price of nil, are exercisable at any time at the option of the holder and have no expiry date.

CONSOLIDATED_BALANCE_SHEETS_Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Oct. 31, 2013	Apr. 30, 2013
In Millions, unless otherwise specified
Accounts receivable, allowance for doubtful accounts	$5.50	$6.40
Common shares, without par value	'	'
Common shares, shares issued	53.9	53.7
Common shares, shares outstanding	53.9	53.7
Preferred shares, issued	'	'
Preferred shares, outstanding	'	'

CONSOLIDATED_STATEMENTS_OF_OPE

CONSOLIDATED STATEMENTS OF OPERATIONS (USD $)	3 Months Ended		6 Months Ended
In Millions, except Per Share data, unless otherwise specified	Oct. 31, 2013	Oct. 31, 2012	Oct. 31, 2013	Oct. 31, 2012
Revenues	$144.90	$145.50	$286.50	$284
Cost of revenues	60.5	63.7	121.9	126.9
Gross margin	84.4	81.8	164.6	157.1
Expenses:	'	'	'	'
Selling, general and administrative	55.9	54.4	112.1	112.3
Research and development	14.8	13.9	28.6	28.4
Special charges and restructuring costs (note 16)	4.9	9.3	10.2	11.3
Loss on litigation settlement	'	0.4	'	1.1
Operating Expenses, Total	75.6	78	150.9	153.1
Operating income from continuing operations	8.8	3.8	13.7	4
Interest expense	-6.5	-4.6	-13	-9.3
Other income (expense)	0.5	0.6	-0.3	0.6
Income (loss) from continuing operations, before income taxes	2.8	-0.2	0.4	-4.7
Current income tax recovery (expense)	-2.6	-3.7	-4.7	-6.2
Deferred income tax recovery (expense)	5.2	2.3	5.9	7.4
Net income (loss) from continuing operations	5.4	-1.6	1.6	-3.5
Net loss from discontinued operations	'	-0.3	'	-0.5
Net income (loss)	$5.40	($1.90)	$1.60	($4)
Net income (loss) per common share - Basic	'	'	'	'
Net income (loss) per share from continuing operations	$0.10	($0.03)	$0.03	($0.06)
Net loss per share from discontinued operations	'	($0.01)	'	($0.01)
Net income (loss) per share	$0.10	($0.04)	$0.03	($0.07)
Net income (loss) per common share - Diluted	'	'	'	'
Net income (loss) per share from continuing operations	$0.10	($0.03)	$0.03	($0.06)
Net loss per share from discontinued operations	'	($0.01)	'	($0.01)
Net income (loss) per share	$0.10	($0.04)	$0.03	($0.07)
Weighted-average number of common shares outstanding (note 15)	'	'	'	'
Basic	53.8	53.7	53.8	53.6
Diluted	56.8	53.7	56.4	53.6

CONSOLIDATED_STATEMENTS_OF_COM

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Oct. 31, 2013	Oct. 31, 2012	Oct. 31, 2013	Oct. 31, 2012
Net income (loss)	$5.40	($1.90)	$1.60	($4)
Other comprehensive income (loss):	'	'	'	'
Foreign currency translation adjustments	-1.5	-1.4	-2.1	-0.1
Pension liability adjustments	-12	5.6	21.5	6.3
Other Comprehensive Income (Loss), Net of Tax, Total	-13.5	4.2	19.4	6.2
Comprehensive income (loss)	($8.10)	$2.30	$21	$2.20

CONSOLIDATED_STATEMENTS_OF_SHA

CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (USD $)	Total	Common Shares	Warrants	Additional Paid-in Capital	Accumulated Deficit	Accumulated Other Comprehensive Income (Loss)
In Millions
Balance at Apr. 30, 2012	$89.80	$809.40	$55.60	$13.70	($692)	($96.90)
Balance (in shares) at Apr. 30, 2012	'	53.6	'	'	'	'
Comprehensive income (loss)	-0.1	'	'	'	-2.1	2
Exercise of stock options (in shares)	'	0.1	'	'	'	'
Exercise of stock options	0.2	0.8	'	-0.6	'	'
Stock-based compensation	1.1	'	'	1.1	'	'
Balance at Jul. 31, 2012	91	810.2	55.6	14.2	-694.1	-94.9
Balance (in shares) at Jul. 31, 2012	'	53.7	'	'	'	'
Comprehensive income (loss)	2.3	'	'	'	-1.9	4.2
Stock-based compensation	1.1	'	'	1.1	'	'
Expiration of warrants	'	'	-16.5	16.5	'	'
Balance at Oct. 31, 2012	94.4	810.2	39.1	31.8	-696	-90.7
Balance (in shares) at Oct. 31, 2012	'	53.7	'	'	'	'
Comprehensive income (loss)	-16.6	'	'	'	2.1	-18.7
Stock-based compensation	1.1	'	'	1.1	'	'
Balance at Jan. 31, 2013	78.9	810.2	39.1	32.9	-693.9	-109.4
Balance (in shares) at Jan. 31, 2013	'	53.7	'	'	'	'
Comprehensive income (loss)	4	'	'	'	8.1	-4.1
Exercise of stock options	0.2	0.2	'	'	'	'
Stock-based compensation	0.9	'	'	0.9	'	'
Balance at Apr. 30, 2013	84	810.4	39.1	33.8	-685.8	-113.5
Balance (in shares) at Apr. 30, 2013	'	53.7	'	'	'	'
Comprehensive income (loss)	29.1	'	'	'	-3.8	32.9
Exercise of stock options (in shares)	'	0.1	'	'	'	'
Exercise of stock options	0.1	0.1	'	'	'	'
Stock-based compensation	1.1	'	'	1.1	'	'
Balance at Jul. 31, 2013	114.3	810.5	39.1	34.9	-689.6	-80.6
Balance (in shares) at Jul. 31, 2013	'	53.8	'	'	'	'
Comprehensive income (loss)	-8.1	'	'	'	5.4	-13.5
Exercise of stock options (in shares)	'	0.1	'	'	'	'
Exercise of stock options	0.6	1	'	-0.4	'	'
Stock-based compensation	1.2	'	'	1.2	'	'
Balance at Oct. 31, 2013	$108	$811.50	$39.10	$35.70	($684.20)	($94.10)
Balance (in shares) at Oct. 31, 2013	'	53.9	'	'	'	'

CONSOLIDATED_STATEMENTS_OF_SHA1

CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Parenthetical)	3 Months Ended
In Millions, unless otherwise specified	Apr. 30, 2013
	Common Shares
	Maximum
Exercise of stock options, share	0.1

CONSOLIDATED_STATEMENTS_OF_CAS

CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Oct. 31, 2013	Oct. 31, 2012	Oct. 31, 2013	Oct. 31, 2012
CASH PROVIDED BY (USED IN) Operating activities:	'	'	'	'
Net income (loss)	$5.40	($1.90)	$1.60	($4)
Adjustments to reconcile net loss to net cash from operating activities:	'	'	'	'
Amortization and depreciation	9.8	9	18.9	17.6
Stock-based compensation	1.2	1.1	2.3	2.2
Deferred income taxes	-5.2	-2.3	-5.9	-7.4
Non-cash charge relating to acquisitions (note 3)	'	'	0.4	'
Non-cash movements in provisions	-2.6	-0.8	-2.4	-2.7
Change in non-cash operating assets and liabilities (note 18)	7.4	11.6	14.3	14.4
Net cash from operating activities	16	16.7	29.2	20.1
Investing activities:	'	'	'	'
Additions to property, equipment and intangible assets	-1.3	-4.7	-2.5	-8.2
Acquisitions, net of cash acquired (note 3)	'	'	-23.1	'
Decrease in restricted cash	'	0.3	0.1	0.3
Net cash used in investing activities	-1.3	-4.4	-25.5	-7.9
Financing activities:	'	'	'	'
Repayment of capital lease liabilities	-1.1	-0.8	-2.2	-1.3
Repayment of long-term debt	-0.5	-2.2	-1.5	-2.2
Proceeds from issuance of shares from option exercises	0.6	'	0.7	0.2
Net cash used in financing activities	-1	-3	-3	-3.3
Effect of exchange rate changes on cash and cash equivalents	1.5	0.6	0.8	-0.2
Net increase (decrease) in cash and cash equivalents	15.2	9.9	1.5	8.7
Cash and cash equivalents, beginning of period	55.3	77.5	69	78.7
Cash and cash equivalents, end of period	$70.50	$87.40	$70.50	$87.40

BASIS_OF_PRESENTATION

BASIS OF PRESENTATION	6 Months Ended
	Oct. 31, 2013
BASIS OF PRESENTATION	'
	1. BASIS OF PRESENTATION
	These unaudited interim consolidated financial statements have been prepared by Mitel Networks Corporation (“Mitel” or the “Company”) in United States (“U.S.”) dollars, unless otherwise stated, and in accordance with accounting principles generally accepted in the U.S. (“GAAP”) for interim financial statements. Accordingly, these unaudited interim consolidated financial statements do not include all information and footnotes normally included in financial statements prepared in accordance with GAAP and the rules and regulations of the U.S. Securities and Exchange Commission (“SEC”) for complete financial statements. In the opinion of management of the Company, these unaudited interim consolidated financial statements reflect all adjustments necessary to present fairly the financial position at October 31, 2013 and the results of operations and cash flows of the Company for each of the three- and six-month periods ended October 31, 2013 and October 31, 2012 in accordance with GAAP applied on a consistent basis.
	These unaudited interim consolidated financial statements and the accompanying notes should be read in conjunction with the audited annual consolidated financial statements and notes thereto for each of the three years ended April 30, 2013, 2012 and 2011 contained in the Company’s Annual Report on Form 10-K filed with the SEC on June 24, 2013 (the “audited annual consolidated financial statements”). The results of operations for the periods presented are not necessarily indicative of the results to be expected for the full year or future periods.

SIGNIFICANT_ACCOUNTING_POLICIE

SIGNIFICANT ACCOUNTING POLICIES	6 Months Ended
	Oct. 31, 2013
SIGNIFICANT ACCOUNTING POLICIES	'
	2. SIGNIFICANT ACCOUNTING POLICIES
	The Company’s significant accounting policies are described in note 2 to the audited annual consolidated financial statements. There have been no significant changes to these policies. Other than the accounting pronouncement below, there have been no recent accounting pronouncements that are expected to have a significant effect on the consolidated financial statements.
	Classification of unrecognized tax benefits
	In July 2013, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2013-11 to include explicit guidance on the financial statement presentation of an unrecognized tax benefit when a net operating loss carryforward, a similar tax loss carryforward or a tax credit carryforward exists. The ASU provides amendments to the Income Taxes subtopic of the FASB Accounting Standards Codification (“ASC”), such that generally, unrecognized tax benefits should be presented as a reduction of deferred tax assets created by net operating losses or tax credit carryforwards in the same jurisdiction. The Company expects to adopt this ASU prospectively in the first quarter of fiscal 2015 by presenting certain unrecognized tax benefits as a reduction of deferred tax assets.

ACQUISITION

ACQUISITION	6 Months Ended
	Oct. 31, 2013
ACQUISITION	'
	3. ACQUISITION
	On June 17, 2013, the Company completed the acquisition of prairieFyre Software Inc. (“prairieFyre”), a global provider of contact center, business analytics, and workforce optimization software and services. The acquisition provides Mitel with a cornerstone development platform to address increasing demand for cloud-based contact center solutions. The net cash cost to Mitel for the acquisition was $20.0 for a 100% equity ownership interest in prairieFyre. The net cash cost consisted of cash paid of $27.3, including a working capital adjustment, less cash and cash equivalents acquired of $4.2 and acquired accounts receivable due from Mitel of $3.1.
	As a highly integrated original equipment manufacturer (“OEM”), substantially all of prairieFyre’s product and service revenues were derived through Mitel. As a result, at the time of acquisition, a contract existed between Mitel and prairieFyre for prairieFyre to service Mitel’s channel partners and direct customers on behalf of Mitel. In connection with the purchase price allocation, the fair value for prairieFyre’s deferred revenue related to its service business was determined to be below book value. As such, Mitel recorded a non-cash expense of $0.4 at the time of the acquisition to reflect the fair value of the pre-existing contract. The charge was recorded in the first quarter of fiscal 2014 and was included in Other expense in the consolidated statement of operations.
	The primary reason for the acquisition was to provide Mitel with a cornerstone development platform for contact centers. The Company expects to continue to grow the platform, leverage the research and development workforce acquired as well as realize synergies, primarily in general and administrative activities. These factors contributed to the recognition of goodwill for the acquisition.
	The Company is required to allocate the purchase price to tangible and identifiable intangible assets acquired and liabilities assumed based on their fair values. The excess of the purchase price over those fair values is recorded as goodwill. The purchase price and allocation of the purchase price is as follows:
			June 17, 2013
	Net assets:
	Cash		$	4.2
	Accounts receivable, due from Mitel			3.1
	Accounts receivable, other			0.4
	Other current assets			1.3
	Property and equipment			0.3
	Intangible assets – customer relationships(1)(3)			0.3
	Intangible assets – developed technology(2)(3)			11
	Goodwill(3)			14.7
	Accounts payable and accrued liabilities			(1.3	)
	Deferred revenue, current			(3.9	)
	Deferred revenue, non-current			(1.8	)
	Deferred tax liability			(1.0	)
	Net assets acquired		$	27.3
	Purchase price:
	Amount paid		$	27.3
	Cash and cash equivalents acquired			(4.2	)
	Purchase price net of cash acquired		$	23.1
	Intercompany accounts receivable			(3.1	)
	Purchase price net of cash and intercompany receivable acquired		$	20
	-1	Intangible assets – customer relationships consist of non-Mitel customer relationships and are being amortized over the expected useful life of the asset of 4 years.
	-2	Intangible assets – developed technology is being amortized over the expected useful life of the asset of 4 years.
	-3	Neither the goodwill nor the intangible assets are expected to be deductible for tax purposes.
	prairieFyre’s operations are included in the Mitel Communications Solutions (“MCS”) segment since the date of the acquisition. The Company expects prairieFyre to be integrated into MCS and therefore does not expect that prairieFyre will be a separate reporting unit for goodwill impairment testing purposes.
	prairieFyre’s results of operations are included in the income statement of the combined entity from the date of acquisition. However, as substantially all of prairieFyre’s product and service revenue was derived through Mitel, substantially all of prairieFyre’s revenue was eliminated on consolidation. The amount of revenue and net income recorded for prairieFyre for the three and six months ended October 31, 2013 was approximately $5.2 and $1.4, and $7.9 and $2.1, respectively.
	The following unaudited pro-forma financial information presents the Company’s consolidated financial results as if the acquisition had occurred at the beginning of the period:
			Three months ended						Six months ended
			October 31,			October 31,			October 31,		October 31,
			2013			2012			2013		2012
	Operations
	Revenues		$	144.9		$	145.7		$	286.6	$	284.4
	Net income (loss)			5.4			(1.9	)		2.3		(4.0	)
	These pro-forma results have been prepared for comparative purposes only and are not necessarily indicative of the results of operations that actually would have resulted had the acquisition been effected at the beginning of the respective periods and are not necessarily representative of future results. The pro-forma results include the following adjustments:
		•		Additional amortization of intangible assets that arose from the acquisition of approximately $2.8 per year
		•		Tax provision based on an estimated local effective tax rate of approximately 10%
		•		A nominal adjustment to revenue for the prairieFyre acquisition, as substantially all prairieFyre revenue is eliminated on consolidation

NET_INVESTMENT_IN_SALESTYPE_LE

NET INVESTMENT IN SALES-TYPE LEASES	6 Months Ended
	Oct. 31, 2013
NET INVESTMENT IN SALES-TYPE LEASES	'
	4. NET INVESTMENT IN SALES-TYPE LEASES
	Net investment in sales-type leases represents the value of sales-type leases held under the TotalSolution® program. The Company currently sells the rental payments due to the Company from some of the sales-type leases. The Company maintains reserves against its estimate of potential recourse for the balance of sales-type leases (recorded net, against the receivable) and for the balance of sold rental payments remaining unbilled (recorded separately as a lease recourse liability). The following table provides detail on the sales-type leases:
			October 31, 2013									April 30, 2013
			Gross			Allowance			Net			Gross			Allowance			Net
	Lease balances included in consolidated accounts receivable		$	5.5		$	(0.7	)	$	4.8		$	6.7		$	(1.6	)	$	5.1
	Current portion of investment in sales-type leases			14.8			(0.5	)		14.3			16			(0.6	)		15.4
	Non-current portion of investment in sales-type leases			15			(0.6	)		14.4			19.4			(0.7	)		18.7
	Total unsold sales-type leases (recorded as assets, net, on the consolidated balance sheets)			35.3			(1.8	)		33.5			42.1			(2.9	)		39.2
	Sold rental payments remaining unbilled			96.1			(3.7	)(1)		92.4			111.2			(3.8	)(1)		107.4
	Total of sales-type leases unsold and sold		$	131.4		$	(5.5	)	$	125.9		$	153.3		$	(6.7	)	$	146.6
	-1	Allowance for sold rental payments is recorded as a lease recourse liability on the consolidated balance sheets
	A sale of rental payments represents the total present value of the payment stream on the sale of the rental payments to third parties. For the three months ended October 31, 2013, the Company sold $5.4 of rental payments and recorded gains on sale of those rental payments of $0.9 (three months ended October 31, 2012—sold $9.5 and recorded gains of $1.4). For the six months ended October 31, 2013, the Company sold $13.2 of rental payments and recorded gains on sale of those rental payments of $2.1 (six months ended October 31, 2012—sold $17.9 and recorded gains of $2.7). Sold payments remaining unbilled at the end of the period represents the total balance of leases that are not included in the Company’s consolidated balance sheets. The Company is compensated for administration and servicing of rental payments sold.
	Financing receivables
	The Company considers its lease balances included in consolidated accounts receivable and its investment in sales-type leases to be financing receivables. Additional disclosures on the credit quality of the Company’s sold and unsold sales-type leases and lease balances included in accounts receivable are as follows:
	Aging Analysis as at October 31, 2013
			Not past due			1-90 days			Greater than			Total past			Total sales-type
						past due			90 days past			due			leases
									due
	Lease balances included in consolidated accounts receivable		$	3		$	1.6		$	0.9		$	2.5		$	5.5
	Investment in sold and unsold sales-type lease receivables			112.5			12.4			1			13.4			125.9
	Total gross sales-type leases			115.5			14			1.9			15.9			131.4
	Allowance			(2.6	)		(1.4	)		(1.5	)		(2.9	)		(5.5	)
	Total net sales-type leases		$	112.9		$	12.6		$	0.4		$	13		$	125.9
	Aging Analysis as at April 30, 2013
			Not past due			1-90 days			Greater than			Total past			Total sales-type
						past due			90 days past			due			leases
									due
	Lease balances included in consolidated accounts receivable		$	2.9		$	1.7		$	2.1		$	3.8		$	6.7
	Investment in sold and unsold sales-type lease receivables			132.1			12.8			1.7			14.5			146.6
	Total gross sales-type leases			135			14.5			3.8			18.3			153.3
	Allowance			(3.4	)		(1.6	)		(1.7	)		(3.3	)		(6.7	)
	Total net sales-type leases		$	131.6		$	12.9		$	2.1		$	15		$	146.6
	Allowance for credit losses
	The Company’s allowance for credit losses is based on management’s assessment of the collectability of customer accounts. A considerable amount of judgment is required in order to make this assessment including a detailed analysis of the aging of the lease receivables, the current creditworthiness of our customers and an analysis of historical bad debts and other adjustments. If there is a deterioration of a major customer’s creditworthiness or actual defaults are higher than historical experience, the estimate of the recoverability of amounts due could be adversely affected. The Company reviews in detail the allowance for doubtful accounts on a quarterly basis and adjusts the allowance estimate to reflect actual portfolio performance and any changes in future portfolio performance expectations.
	The following table shows the activity of the allowance for credit losses on sales-type leases:
	Allowance for credit losses on sales-type leases, April 30, 2012		$	(9.4	)
	Write-offs			3.4
	Recoveries			(0.1	)
	Provision			(0.6	)
	Allowance for credit losses on sales-type leases, April 30, 2013		$	(6.7	)
	Write-offs			0.4
	Provision			(0.7	)
	Allowance for credit losses on sales-type leases, July 31, 2013		$	(7.0	)
	Write-offs			1.7
	Recoveries			(0.1	)
	Provision			(0.1	)
	Allowance for credit losses on sales-type leases, October 31, 2013		$	(5.5	)
	The amount of gross sales-type leases individually and collectively evaluated for impairment is as follows:
			October 31, 2013			April 30, 2013
	Individually evaluated for impairment
	Sales-type leases individually evaluated for impairment, gross		$	5.4		$	7.2
	Allowance against sales-type leases individually evaluated for impairment			(2.6	)		(3.0	)
	Sales-type leases individually evaluated for impairment, net		$	2.8		$	4.2
	Collectively evaluated for impairment
	Sales-type leases collectively evaluated for impairment, gross		$	126		$	146.1
	Allowance against sales-type leases collectively evaluated for impairment			(2.9	)		(3.7	)
	Sales-type leases collectively evaluated for impairment, net		$	123.1		$	142.4

INVENTORIES

INVENTORIES	6 Months Ended
	Oct. 31, 2013
INVENTORIES	'
	5. INVENTORIES
		October 31, 2013			April 30, 2013
	Raw materials and work in process	$	2.5		$	2.5
	Finished goods		25.1			29.9
	Less: provision for obsolete inventory		(3.3	)		(4.5	)
		$	24.3		$	27.9

OTHER_CURRENT_ASSETS

OTHER CURRENT ASSETS	6 Months Ended
	Oct. 31, 2013
OTHER CURRENT ASSETS	'
	6. OTHER CURRENT ASSETS
		October 31, 2013		April 30, 2013
	Prepaid expenses and deferred charges	$	14.7	$	12.6
	Unbilled receivables		3.9		3.5
	Due from related parties (note 9)		1.2		1
	Other receivables		7.8		11.5
	Service inventory		2.9		3.4
	Restricted cash		0.3		0.4
		$	30.8	$	32.4

IDENTIFIABLE_INTANGIBLE_ASSETS

IDENTIFIABLE INTANGIBLE ASSETS (net)	6 Months Ended
	Oct. 31, 2013
IDENTIFIABLE INTANGIBLE ASSETS (net)	'
	7. IDENTIFIABLE INTANGIBLE ASSETS (net)
		October 31, 2013							April 30, 2013
		Cost		Accumulated			Net		Cost		Accumulated			Net
				amortization							amortization
	Patents, trademarks and other	$	19.7	$	(14.8	)	$	4.9	$	18.6	$	(13.7	)	$	4.9
	Customer relationships		100.2		(77.8	)		22.4		99.9		(71.5	)		28.4
	Developed technology		89.8		(62.2	)		27.6		78.8		(56.2	)		22.6
		$	209.7	$	(154.8	)	$	54.9	$	197.3	$	(141.4	)	$	55.9
	The increase in customer relationships and developed technology relates to the fiscal 2014 acquisition, as described in note 3.

ACCOUNTS_PAYABLE_AND_ACCRUED_L

ACCOUNTS PAYABLE AND ACCRUED LIABILITIES	6 Months Ended
	Oct. 31, 2013
ACCOUNTS PAYABLE AND ACCRUED LIABILITIES	'
	8. ACCOUNTS PAYABLE AND ACCRUED LIABILITIES
		October 31, 2013		April 30, 2013
	Trade payables	$	31	$	37
	Employee-related payables		13.9		13.7
	Accrued liabilities		31.5		32
	Restructuring, warranty and other provisions		7.6		7.5
	Due to related parties (note 9)		0.5		0.8
	Other payables		6.8		10.1
		$	91.3	$	101.1

RELATED_PARTY_TRANSACTIONS

RELATED PARTY TRANSACTIONS	6 Months Ended
	Oct. 31, 2013
RELATED PARTY TRANSACTIONS	'
	9. RELATED PARTY TRANSACTIONS
	The Matthews Group
	Dr. Terence Matthews (“Dr. Matthews”) and certain entities controlled by Dr. Matthews (collectively, the “Matthews Group”) are significant common shareholders of the Company. In addition, the Matthews Group holds stock options of the Company. Significant transactions with the Matthews Group include the following:
	Leased properties
	The Company leases its Ottawa-based headquarter facilities from the Matthews Group. During the three and six months ended October 31, 2013, Mitel recorded lease expense of $1.4 and $2.6, respectively (three and six months ended October 31, 2012—$1.2 and $2.3, respectively).
	In November 2013, the Company amended the lease for the Ottawa-based headquarter facilities. The amendment results in Mitel leasing approximately the same square footage as the original lease and at substantially the same rates. In addition, the amendment extends the term on the lease for an additional five years, two months, such that the lease term now expires on April 30, 2021. Mitel has also been granted an option to extend the lease term for an additional five year period, at then-current market rates.
	Investment
	The Company has paid $1.0 for an option to invest in a company in India, over which company the Matthews Group has significant influence. For the three months ended October 31, 2013, sales to and purchases from this venture, arising in the normal course of the Company’s business, were nil and nil, respectively, (three months ended October 31, 2012— $0.2 and $0.1, respectively). For the six months ended October 31, 2013, sales to and purchases from this venture, arising in the normal course of the Company’s business, were $0.1 and nil, respectively, (six months ended October 31, 2012— $0.2 and $0.4, respectively).
	Other
	Other sales to and purchases from companies related to the Matthews Group arising in the normal course of the Company’s business were $0.3 and $0.5, respectively, for the three months ended October 31, 2013 (three months ended October 31, 2012—$0.4 and $0.5, respectively) and $0.5 and $0.9, respectively, for the six months ended October 31, 2013 (six months ended October 31, 2012—$0.6 and $1.3, respectively).
	The amounts receivable and payable as a result of all of the above transactions are included in note 6 and note 8, respectively.

LONGTERM_DEBT

LONG-TERM DEBT	6 Months Ended
	Oct. 31, 2013
LONG-TERM DEBT	'
	10. LONG-TERM DEBT
	At October 31, 2013, the Company has classified $14.2 as current long-term debt relating to its estimated annual repayment of excess cash flow for the year ending April 30, 2014 (as described in note 12 to the audited annual consolidated financial statements). The annual excess cash flow payment is due 100 days subsequent to fiscal year-end. The annual excess cash flow payment may vary significantly from the estimate based on the Company’s operating results and changes in working capital during the remainder of fiscal 2014.
	In November 2013, Mitel made an optional prepayment of $20.0 against its first lien term loan. This prepayment reduces future mandatory first lien term loan principal payments.
	In conjunction with the definitive arrangement agreement with Aastra Technologies Limited (“Aastra”), as described in note 21, Mitel intends on refinancing its existing credit facilities and has received term loan and revolving facility commitments from Jefferies Finance LLC and The Toronto-Dominion Bank.

PENSION_PLANS

PENSION PLANS	6 Months Ended
	Oct. 31, 2013
PENSION PLANS	'
	11. PENSION PLANS
	The Company and its subsidiaries maintain defined contribution pension plans that cover substantially all employees. In addition, the Company’s U.K. subsidiary maintains a defined benefit pension plan. At October 31, 2013, the pension liability was $71.2 (April 30, 2013—$90.5). The decrease in the liability from April 30, 2013 was primarily due to a reduction in the liability during the first quarter of fiscal 2014, which was partially offset by an increase in the second quarter of fiscal 2014.
	At July 31, 2013 and October 31, 2013, the pension valuation was updated for actual investment performance and certain changes in assumptions. The decrease in the liability from April 30, 2013 was primarily due to a decrease in accrued benefits due to an increase in the discount rate from 4.10% at April 30, 2013 to 4.40% at October 31, 2013. The discount rate assumption was determined on a consistent basis and reflects prevailing rates available on high-quality, fixed income debt instruments.
	The Company’s net periodic benefit cost was as follows:
		Three months ended						Six months ended
		October 31,			October 31,			October 31,			October 31,
		2013			2012			2013			2012
	Defined Contribution
	Current service cost	$	0.6		$	0.6		$	1.5		$	1.6
	Defined Benefit
	Current service cost		—			0.4			—			0.8
	Interest cost		2.5			2.6			4.9			5.1
	Expected return on plan assets		(2.0	)		(1.9	)		(4.0	)		(3.8	)
	Recognized actuarial loss		0.3			0.6			0.7			1.3
	Total periodic benefit cost, net	$	1.4		$	2.3		$	3.1		$	5

COMMITMENTS_GUARANTEES_AND_CON

COMMITMENTS, GUARANTEES AND CONTINGENCIES	6 Months Ended
	Oct. 31, 2013
COMMITMENTS, GUARANTEES AND CONTINGENCIES	'
	12. COMMITMENTS, GUARANTEES AND CONTINGENCIES
	Intellectual property indemnification obligations
	The Company enters into agreements on a regular basis with customers and suppliers that include limited intellectual property indemnification obligations that are customary in the industry. These guarantees generally require the Company to compensate the other party for certain damages and costs incurred as a result of third party intellectual property claims arising from these transactions. The nature of these intellectual property indemnification obligations prevents the Company from making a reasonable estimate of the potential amount it could be required to pay to its customers and suppliers. Historically, the Company has not made any significant indemnification payments under such agreements and no amount has been accrued in the consolidated financial statements with respect to these guarantees.
	Contingencies
	The Company is party to a small number of legal proceedings, claims or potential claims arising in the normal course of business. In the opinion of the Company’s management and legal counsel, any monetary liability or financial impact of such claims or potential claims to which the Company might be subject after final adjudication would not be material to the consolidated financial position of the Company, its results of operations or its cash flows. In circumstances where the outcome of the lawsuit is expected to be unfavorable, the Company has recorded a provision for the expected settlement amount. Where the expected settlement amount is a range, the Company has provided for at least the minimum amount of the range.
	Commitments
	On November 10, 2013, Mitel and Aastra Technologies Limited (“Aastra”) (TSX:AAH) entered into a definitive arrangement agreement under which Mitel will acquire all of the outstanding Aastra common shares in exchange for approximately $80.0 as well as the issuance of approximately 44 million Mitel common shares. This agreement is further described in note 21.

SHARE_CAPITAL

SHARE CAPITAL	6 Months Ended
	Oct. 31, 2013
SHARE CAPITAL	'
	13. SHARE CAPITAL
	Share Capital
	At October 31, 2013 and April 30, 2013, the Company’s authorized capital stock consisted of an unlimited number of common shares and an unlimited number of preferred shares. The holders of common shares are entitled to one vote per share and are entitled to dividends when and if declared by the Board of Directors.
	Stock Options
	Following is a summary of the Company’s stock option activity (in millions, except per option amounts):
			Six months ended
			October 31, 2013						October 31, 2012
			Number of			Weighted Average			Number of			Weighted Average
			Options			Exercise Price per			Options			Exercise Price per
						Option						Option
	Outstanding options:
	Balance, beginning of period			6.4		$	5.15			6.4		$	5.34
	Granted			1.6		$	4.43			0.8		$	3.59
	Exercised			(0.2	)	$	3.89			(0.1	)	$	3.76
	Forfeited			—	(1)	$	4.61			(0.1	)	$	5.19
	Expired			(0.1	)	$	6.03			(0.2	)	$	5.42
	Balance, end of period			7.7		$	5.03			6.8		$	5.14
	Number of options exercisable			4.2		$	5.25			3.3		$	5.25
	-1	Number of options is less than 0.1 for the period.
	The Company used the Black-Scholes option-pricing model to determine the fair value of the stock option grants during the period. The assumptions used are summarized as follows:
			Three months ended
			October 31, 2013			July 31, 2013			October 31, 2012			July 31, 2012
	Number of options granted			0.6			1			0.3			0.5
	Risk-free interest rate			1.4	%		1.3	%		0.7	%		0.7	%
	Dividends			0	%		0	%		0	%		0	%
	Expected volatility			55	%		55	%		55	%		55	%
	Annual forfeiture rate			10	%		10	%		10	%		10	%
	Expected life of the options			4.6 years			4.6 years			4.6 years			4.6 years
	Fair value per option		$	2.61		$	1.75		$	1.18		$	1.91
	The number of options (and all other security-based compensation) available for grant under the Company’s 2006 Equity Incentive Plan at October 31, 2013 was 2.1 million (April 30, 2013—3.6 million).

WARRANTS

WARRANTS	6 Months Ended
	Oct. 31, 2013
WARRANTS	'
	14. WARRANTS
	The following table outlines the carrying value of warrants outstanding:
			October 31, 2013		April 30, 2013
	Warrants issued in connection with government funding(1)		$	39.1	$	39.1
	-1	At October 31, 2013, there were 2.48 million warrants outstanding that were issued in connection with government funding (April 30, 2013—2.48 million). The warrants have an exercise price of nil, are exercisable at any time at the option of the holder and have no expiry date.

WEIGHTED_AVERAGE_COMMON_SHARES

WEIGHTED AVERAGE COMMON SHARES OUTSTANDING	6 Months Ended
	Oct. 31, 2013
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING	'
	15. WEIGHTED AVERAGE COMMON SHARES OUTSTANDING
	The following table sets forth the basic and diluted weighted average common shares outstanding as required for earnings per share calculations as disclosed on the consolidated statements of operations:
		Three months ended				Six months ended
		October 31,		October 31,		October 31,		October 31,
		2013		2012		2013		2012
	Weighted average common shares outstanding during the period, basic		53.8		53.7		53.8		53.6
	Dilutive effect of options		0.5		—		0.1		—
	Dilutive effect of warrants		2.5		—		2.5		—
	Weighted average common shares outstanding during the period, diluted		56.8		53.7		56.4		53.6
	The following securities have been excluded from the diluted weighted average common shares outstanding because they were anti-dilutive based on the exercise price of the securities:
		Three Months Ended				Six Months Ended
	(Average number outstanding, in millions)	October 31,		October 31,		October 31,		October 31,
		2013		2012		2013		2012
	Stock options		4.7		6.2		5.2		4.7
	The following securities have been excluded from the diluted weighted average common shares outstanding because they were anti-dilutive based on having a net loss attributable to common shareholders from continuing operations for the following periods:
	(Average number outstanding, in millions)	Three Months		Six Months
		Ended		Ended
		October 31,		October 31,
		2012		2012
	Stock options		—		1.6
	Warrants		2.5		2.5
	Additionally, for the three and six months ended October 31, 2013, 0.5 million options (three and six months ended October 31, 2012–0.5 million), which could potentially dilute basic earnings per share in the future, were also excluded from the above tables since they were contingently issuable and the conditions for issuance had not been met by the end of the period.

SPECIAL_CHARGES_AND_RESTRUCTUR

SPECIAL CHARGES AND RESTRUCTURING COSTS	6 Months Ended
	Oct. 31, 2013
SPECIAL CHARGES AND RESTRUCTURING COSTS	'
	16. SPECIAL CHARGES AND RESTRUCTURING COSTS
	Special charges and restructuring costs of $4.9 were recorded in the second quarter of fiscal 2014. The charges consisted of $3.2 of restructuring-related expenses, primarily for headcount reductions and lease termination obligations in the U.S. as previously announced restructuring actions are completed, as well as $1.7 of merger, acquisition and integration activity, including costs relating to the planned merger with Aastra Technologies Limited, as described in note 21.
	Special charges and restructuring costs of $5.3 were recorded in the first quarter of fiscal 2014. The charges consisted of $4.2 of restructuring-related actions, primarily headcount reductions and additional lease termination obligations in North America as the Company reduces its cost structure, as well as $1.1 of merger, acquisition and integration activity, including costs relating to the June 2013 acquisition of prairieFyre, as disclosed in note 3.
	A description of the provision and the related activities for the prior three fiscal years is included in note 19 to the audited annual consolidated financial statements. At October 31, 2013 the current portion of the restructuring provision of $5.9 (April 30, 2013–$6.7) is included in accounts payable and accrued liabilities while the long-term portion is included in other non-current liabilities on the consolidated balance sheets. Substantially all special charges and restructuring costs relate to the Mitel Communications Solutions segment, as described in note 17.
	The following tables summarize the change in provision during the first six months of fiscal 2014:
	Description	Workforce			Lease			Total
		Reduction			Termination
					Obligation
	Balance of provision as of April 30, 2013	$	2.3		$	6.2		$	8.5
	Charges		2.4			1.8			4.2
	Cash payments		(2.6	)		(1.1	)		(3.7	)
	Balance of provision as of July 31, 2013	$	2.1		$	6.9		$	9
	Charges		2.3			0.9			3.2
	Cash payments		(2.2	)		(1.6	)		(3.8	)
	Balance of provision as of October 31, 2013	$	2.2		$	6.2		$	8.4
	The following tables summarize the change in provision during the first six months of fiscal 2013:
	Description	Workforce			Lease			Total
		Reduction			Termination
					Obligation
	Balance of provision as of April 30, 2012	$	1.5		$	9.2		$	10.7
	Charges		1.1			0.9			2
	Cash payments		(1.4	)		(2.2	)		(3.6	)
	Balance of provision as of July 31, 2012	$	1.2		$	7.9		$	9.1
	Charges		6			3.3			9.3
	Cash payments		(4.7	)		(1.6	)		(6.3	)
	Balance of provision as of October 31, 2012	$	2.5		$	9.6		$	12.1

SEGMENT_INFORMATION

SEGMENT INFORMATION	6 Months Ended
	Oct. 31, 2013
SEGMENT INFORMATION	'
	17. SEGMENT INFORMATION
	The Company’s segmented disclosure is based on the following three business units:
		•		Mitel Communications Solutions (“MCS”), which delivers unified communications and collaboration solutions to customers around the globe including IP telephony platforms, desktop devices and software applications;
		•		Mitel NetSolutions (“NetSolutions”), which delivers network and cloud-based services, mobile services and broadband connectivity to the U.S. market; and
		•		Other, which sells products and related services that complement the Company’s core unified communications offering.
	The following table presents the results of operations for the Company’s three segments:
			Three months ended October 31, 2013									Three months ended October 31, 2012
			MCS		NetSolutions		Other		Total			MCS		NetSolutions		Other		Total
	Revenues		$	118.8	$	22.1	$	4	$	144.9		$	122	$	20.9	$	2.6	$	145.5
	Segment income			29.6		4.5		1		35.1			29.3		4.9		0.5		34.7
	Corporate and unallocated:
	SG&A									(21.4	)								(21.2	)
	Special charges and restructuring costs									(4.9	)								(9.3	)
	Litigation settlement obligation									—									(0.4	)
	Operating income								$	8.8								$	3.8
			Six months ended October 31, 2013									Six months ended October 31, 2012
			MCS		NetSolutions		Other		Total			MCS		NetSolutions		Other		Total
	Revenues		$	236.7	$	43.8	$	6	$	286.5		$	236.5	$	41.6	$	5.9	$	284
	Segment income			57.6		9		1.2		67.8			50.3		9.5		1		60.8
	Corporate and unallocated:
	SG&A									(43.9	)								(44.4	)
	Special charges and restructuring costs									(10.2	)								(11.3	)
	Litigation settlement obligation									—									(1.1	)
	Operating income								$	13.7								$	4
	Geographic information
	Revenues from external customers are attributed to the following countries based on location of the customers.
			Three months ended				Six months ended
			October 31,		October 31,		October 31,		October 31,
			2013		2012		2013		2012
	United States		$	91.9	$	94.7	$	182.4	$	183
	United Kingdom			26.1		27		51.6		53.3
	Canada			8.3		6.7		16.8		14.8
	Other foreign countries			18.6		17.1		35.7		32.9
			$	144.9	$	145.5	$	286.5	$	284

SUPPLEMENTARY_CASH_FLOW_INFORM

SUPPLEMENTARY CASH FLOW INFORMATION	6 Months Ended
	Oct. 31, 2013
SUPPLEMENTARY CASH FLOW INFORMATION	'
	18. SUPPLEMENTARY CASH FLOW INFORMATION
			Three months ended						Six months ended
			October 31,			October 31,			October 31,			October 31,
			2013			2012			2013			2012
	Changes in non-cash operating assets and liabilities:
	Accounts receivable and sales-type lease receivables		$	0.3		$	1.6		$	13.9		$	19.1
	Inventories			3.2			0.5			5.3			(0.7	)
	Other current assets(1)			1.8			1.4			3.4			1.2
	Other non-current assets			0.6			0.4			(0.1	)		(0.4	)
	Accounts payable and accrued liabilities			1			5.8			(8.7	)		(5.4	)
	Deferred revenue			1			(0.7	)		1			(1.8	)
	Other non-current liabilities			0.4			2.2			0.8			1.4
	Pension liability			(0.9	)		0.4			(1.3	)		1
			$	7.4		$	11.6		$	14.3		$	14.4
	Other items:
	Interest payments		$	6		$	1.5		$	11.8		$	7.4
	Income tax payments		$	4.5		$	4.3		$	5.3		$	8.6
	Property and equipment additions financed through capital lease		$	1.3		$	3.5		$	2.8		$	5.4
	-1	Included in other current assets on the consolidated balance sheets is restricted cash, the change in which is presented separately on the consolidated statements of cash flows.
	Cash and cash equivalents at October 31, 2013 consisted of cash of $52.5 (April 30, 2013—$60.0) and cash equivalents of $18.0 (April 30, 2013—$9.0).

HEDGING_ACTIVITIES

HEDGING ACTIVITIES	6 Months Ended
	Oct. 31, 2013
HEDGING ACTIVITIES	'
	19. HEDGING ACTIVITIES
	The Company operates globally, and therefore incurs expenses in currencies other than its various functional currencies and its U.S. dollar reporting currency. The Company utilizes forward contracts to enhance its ability to manage foreign currency exchange rate risk that exists as part of its ongoing operations. The Company does not use derivative contracts for speculative purposes. At October 31, 2013 and April 30, 2013, all of the Company’s outstanding forward contracts had a term of one month or less.
	At October 31, 2013, the Company held forward contracts to sell Australian dollars and Euros at a fixed rate on a total notional amount of $13.8 U.S. dollars. As well, the Company held forward contracts to buy British pounds sterling at a fixed rate on a notional amount of $11.3 U.S. dollars. At October 31, 2013, the Company recorded a net unrealized loss on fair value adjustments on the outstanding forward contracts of less than $0.1.
	At April 30, 2013, the Company held forward contracts to sell Australian dollars, British pounds sterling and Euros at a fixed rate on a notional amount of $14.7 U.S. dollars. At April 30, 2013, the Company had a net unrealized loss on fair value adjustments on the outstanding forward contracts of less than $0.1.

FAIR_VALUE_MEASUREMENTS

FAIR VALUE MEASUREMENTS	6 Months Ended
	Oct. 31, 2013
FAIR VALUE MEASUREMENTS	'
	20. FAIR VALUE MEASUREMENTS
	Financial assets and liabilities carried at fair value are classified and disclosed in one of the following three categories:
	Level 1: Quoted market prices in active markets for identical assets or liabilities.
	Level 2: Observable market based inputs or unobservable inputs that are corroborated by market data.
	Level 3: Unobservable inputs that are not corroborated by market data.
	Assets/Liabilities Measured at Fair Value on a Recurring Basis
		Fair Value Measurement at October 31, 2013
		Quoted Price in		Significant		Significant		Total
		Active Markets		Other		Unobservable
		for Identical		Observable		Inputs
		Instruments		Inputs
		Level 1		Level 2		Level 3
	Assets
	Cash equivalents	$	—	$	18	$	—	$	18
	Restricted cash		0.3		—		—		0.3
	Forward contracts		—		0.1		—		0.1
		$	0.3	$	18.1	$	—	$	18.4
	Liabilities
	Forward contracts	$	—	$	0.1	$	—	$	0.1
		Fair Value Measurement at April 30, 2013
		Quoted Price in		Significant		Significant		Total
		Active Markets		Other		Unobservable
		for Identical		Observable		Inputs
		Instruments		Inputs
		Level 1		Level 2		Level 3
	Assets
	Cash equivalents	$	—	$	9	$	—	$	9
	Restricted cash		0.4		—		—		0.4
	Forward contracts		—		0.1		—		0.1
	Investment		—		—		1		1
		$	0.4	$	9.1	$	1	$	10.5
	Liabilities
	Forward contracts	$	—	$	0.1	$	—	$	0.1

SUBSEQUENT_EVENTS

SUBSEQUENT EVENTS	6 Months Ended
	Oct. 31, 2013
SUBSEQUENT EVENTS	'
	21. SUBSEQUENT EVENTS
	On November 10, 2013, Mitel and Aastra Technologies Limited (“Aastra”) (TSX:AAH) entered into a definitive arrangement agreement under which Mitel has agreed to acquire all of the outstanding Aastra common shares in exchange for approximately $80.0 as well as the issuance of approximately 44 million Mitel common shares. Aastra is a global provider of unified communications and collaboration software, solutions and services with annual revenues of approximately $600.0, of which approximately 75% are generated in Europe. Under the terms of the agreement, Mitel has agreed to increase the number of directors on its board of directors from eight to nine and two members of Mitel’s existing board of directors will resign. Aastra will have the right to appoint three new board nominees to fill the vacancies.
	In conjunction with the transaction and to finance the cash portion of the transaction and provide additional liquidity and working capital, Mitel currently intends to refinance its existing credit facilities and has received term loan and revolving credit facility commitments from Jefferies Finance LLC and The Toronto-Dominion Bank of up to $405.0, consisting of a $355.0 term loan and a revolving facility of up to $50.0.
	The transaction will be carried out by way of a court-approved plan of arrangement and will require the approval of at least 66 2/3% of the votes cast by the shareholders of Aastra at a special meeting expected to take place in January 2014. Mr. Francis Shen and Mr. Tony Shen, the co-Chief Executive Officers of Aastra, who together control approximately 14% of the outstanding Aastra common shares, have entered into voting support agreements and confirmed their intention to vote their Aastra common shares in favor of the arrangement.
	Under applicable TSX and NASDAQ rules, the transaction also requires the approval of Mitel shareholders by majority vote, as the number of Mitel common shares to be issued in the transaction exceeds 25% of the total number of outstanding Mitel common shares. Francisco Partners Management, LLC and certain of its affiliates (collectively, the “Francisco Group”) and the Matthews Group, who together control approximately 60% of the company’s common shares, have both signed voting support agreements in favor of the transaction. Mitel expects that the TSX and NASDAQ will accept these agreements to support the transaction as evidence of shareholder approval and not require Mitel to hold a shareholder meeting.
	In addition to shareholder and court approvals, the transaction is subject to compliance with the Investment Canada Act and certain other closing conditions customary in transactions of this nature. Aastra and Mitel anticipate that the transaction will be completed in the first calendar quarter of 2014. If the transaction is not completed, under certain circumstances Mitel could be required to pay Aastra or Aastra could be required to pay Mitel a CAD$11.0 termination fee.
	In connection with the completion of the transaction, Mitel intends to change its fiscal year end from April 30 to December 31. If the transaction is not consummated, Mitel’s fiscal year end will remain April 30.

SIGNIFICANT_ACCOUNTING_POLICIE1

SIGNIFICANT ACCOUNTING POLICIES (Policies)	6 Months Ended
	Oct. 31, 2013
Classification of unrecognized tax benefits	'
	Classification of unrecognized tax benefits
	In July 2013, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2013-11 to include explicit guidance on the financial statement presentation of an unrecognized tax benefit when a net operating loss carryforward, a similar tax loss carryforward or a tax credit carryforward exists. The ASU provides amendments to the Income Taxes subtopic of the FASB Accounting Standards Codification (“ASC”), such that generally, unrecognized tax benefits should be presented as a reduction of deferred tax assets created by net operating losses or tax credit carryforwards in the same jurisdiction. The Company expects to adopt this ASU prospectively in the first quarter of fiscal 2015 by presenting certain unrecognized tax benefits as a reduction of deferred tax assets.

ACQUISITION_Tables

ACQUISITION (Tables)	6 Months Ended
	Oct. 31, 2013
Purchase Price and Allocations	'
	The purchase price and allocation of the purchase price is as follows:
			June 17, 2013
	Net assets:
	Cash		$	4.2
	Accounts receivable, due from Mitel			3.1
	Accounts receivable, other			0.4
	Other current assets			1.3
	Property and equipment			0.3
	Intangible assets – customer relationships(1)(3)			0.3
	Intangible assets – developed technology(2)(3)			11
	Goodwill(3)			14.7
	Accounts payable and accrued liabilities			(1.3	)
	Deferred revenue, current			(3.9	)
	Deferred revenue, non-current			(1.8	)
	Deferred tax liability			(1.0	)
	Net assets acquired		$	27.3
	Purchase price:
	Amount paid		$	27.3
	Cash and cash equivalents acquired			(4.2	)
	Purchase price net of cash acquired		$	23.1
	Intercompany accounts receivable			(3.1	)
	Purchase price net of cash and intercompany receivable acquired		$	20
	-1	Intangible assets – customer relationships consist of non-Mitel customer relationships and are being amortized over the expected useful life of the asset of 4 years.
	-2	Intangible assets – developed technology is being amortized over the expected useful life of the asset of 4 years.
	-3	Neither the goodwill nor the intangible assets are expected to be deductible for tax purposes.
Business Acquisition ProForma Information	'
	The following unaudited pro-forma financial information presents the Company’s consolidated financial results as if the acquisition had occurred at the beginning of the period:
			Three months ended						Six months ended
			October 31,			October 31,			October 31,		October 31,
			2013			2012			2013		2012
	Operations
	Revenues		$	144.9		$	145.7		$	286.6	$	284.4
	Net income (loss)			5.4			(1.9	)		2.3		(4.0	)

NET_INVESTMENT_IN_SALESTYPE_LE1

NET INVESTMENT IN SALES-TYPE LEASES (Tables)	6 Months Ended
	Oct. 31, 2013
Sales-Type Leases	'
	The following table provides detail on the sales-type leases:
			October 31, 2013									April 30, 2013
			Gross			Allowance			Net			Gross			Allowance			Net
	Lease balances included in consolidated accounts receivable		$	5.5		$	(0.7	)	$	4.8		$	6.7		$	(1.6	)	$	5.1
	Current portion of investment in sales-type leases			14.8			(0.5	)		14.3			16			(0.6	)		15.4
	Non-current portion of investment in sales-type leases			15			(0.6	)		14.4			19.4			(0.7	)		18.7
	Total unsold sales-type leases (recorded as assets, net, on the consolidated balance sheets)			35.3			(1.8	)		33.5			42.1			(2.9	)		39.2
	Sold rental payments remaining unbilled			96.1			(3.7	)(1)		92.4			111.2			(3.8	)(1)		107.4
	Total of sales-type leases unsold and sold		$	131.4		$	(5.5	)	$	125.9		$	153.3		$	(6.7	)	$	146.6
	-1	Allowance for sold rental payments is recorded as a lease recourse liability on the consolidated balance sheets
Aging Analysis of Financing Receivables	'
	Additional disclosures on the credit quality of the Company’s sold and unsold sales-type leases and lease balances included in accounts receivable are as follows:
	Aging Analysis as at October 31, 2013
			Not past due			1-90 days			Greater than			Total past			Total sales-type
						past due			90 days past			due			leases
									due
	Lease balances included in consolidated accounts receivable		$	3		$	1.6		$	0.9		$	2.5		$	5.5
	Investment in sold and unsold sales-type lease receivables			112.5			12.4			1			13.4			125.9
	Total gross sales-type leases			115.5			14			1.9			15.9			131.4
	Allowance			(2.6	)		(1.4	)		(1.5	)		(2.9	)		(5.5	)
	Total net sales-type leases		$	112.9		$	12.6		$	0.4		$	13		$	125.9
	Aging Analysis as at April 30, 2013
			Not past due			1-90 days			Greater than			Total past			Total sales-type
						past due			90 days past			due			leases
									due
	Lease balances included in consolidated accounts receivable		$	2.9		$	1.7		$	2.1		$	3.8		$	6.7
	Investment in sold and unsold sales-type lease receivables			132.1			12.8			1.7			14.5			146.6
	Total gross sales-type leases			135			14.5			3.8			18.3			153.3
	Allowance			(3.4	)		(1.6	)		(1.7	)		(3.3	)		(6.7	)
	Total net sales-type leases		$	131.6		$	12.9		$	2.1		$	15		$	146.6
Activity of Allowance for Credit Losses on Sales-Type Leases	'
	The following table shows the activity of the allowance for credit losses on sales-type leases:
	Allowance for credit losses on sales-type leases, April 30, 2012		$	(9.4	)
	Write-offs			3.4
	Recoveries			(0.1	)
	Provision			(0.6	)
	Allowance for credit losses on sales-type leases, April 30, 2013		$	(6.7	)
	Write-offs			0.4
	Provision			(0.7	)
	Allowance for credit losses on sales-type leases, July 31, 2013		$	(7.0	)
	Write-offs			1.7
	Recoveries			(0.1	)
	Provision			(0.1	)
	Allowance for credit losses on sales-type leases, October 31, 2013		$	(5.5	)
Gross Sales-Type Leases Individually and Collectively Evaluated for Impairment	'
	The amount of gross sales-type leases individually and collectively evaluated for impairment is as follows:
			October 31, 2013			April 30, 2013
	Individually evaluated for impairment
	Sales-type leases individually evaluated for impairment, gross		$	5.4		$	7.2
	Allowance against sales-type leases individually evaluated for impairment			(2.6	)		(3.0	)
	Sales-type leases individually evaluated for impairment, net		$	2.8		$	4.2
	Collectively evaluated for impairment
	Sales-type leases collectively evaluated for impairment, gross		$	126		$	146.1
	Allowance against sales-type leases collectively evaluated for impairment			(2.9	)		(3.7	)
	Sales-type leases collectively evaluated for impairment, net		$	123.1		$	142.4

INVENTORIES_Tables

INVENTORIES (Tables)	6 Months Ended
	Oct. 31, 2013
Inventories	'
		October 31, 2013			April 30, 2013
	Raw materials and work in process	$	2.5		$	2.5
	Finished goods		25.1			29.9
	Less: provision for obsolete inventory		(3.3	)		(4.5	)
		$	24.3		$	27.9

OTHER_CURRENT_ASSETS_Tables

OTHER CURRENT ASSETS (Tables)	6 Months Ended
	Oct. 31, 2013
Other Current Assets	'
		October 31, 2013		April 30, 2013
	Prepaid expenses and deferred charges	$	14.7	$	12.6
	Unbilled receivables		3.9		3.5
	Due from related parties (note 9)		1.2		1
	Other receivables		7.8		11.5
	Service inventory		2.9		3.4
	Restricted cash		0.3		0.4
		$	30.8	$	32.4

IDENTIFIABLE_INTANGIBLE_ASSETS1

IDENTIFIABLE INTANGIBLE ASSETS (net) (Tables)	6 Months Ended
	Oct. 31, 2013
Identifiable Intangible Assets (Net)	'
		October 31, 2013							April 30, 2013
		Cost		Accumulated			Net		Cost		Accumulated			Net
				amortization							amortization
	Patents, trademarks and other	$	19.7	$	(14.8	)	$	4.9	$	18.6	$	(13.7	)	$	4.9
	Customer relationships		100.2		(77.8	)		22.4		99.9		(71.5	)		28.4
	Developed technology		89.8		(62.2	)		27.6		78.8		(56.2	)		22.6
		$	209.7	$	(154.8	)	$	54.9	$	197.3	$	(141.4	)	$	55.9

ACCOUNTS_PAYABLE_AND_ACCRUED_L1

ACCOUNTS PAYABLE AND ACCRUED LIABILITIES (Tables)	6 Months Ended
	Oct. 31, 2013
Accounts Payable and Accrued Liabilities	'
		October 31, 2013		April 30, 2013
	Trade payables	$	31	$	37
	Employee-related payables		13.9		13.7
	Accrued liabilities		31.5		32
	Restructuring, warranty and other provisions		7.6		7.5
	Due to related parties (note 9)		0.5		0.8
	Other payables		6.8		10.1
		$	91.3	$	101.1

PENSION_PLANS_Tables

PENSION PLANS (Tables)	6 Months Ended
	Oct. 31, 2013
Net Periodic Benefit Cost	'
	The Company’s net periodic benefit cost was as follows:
		Three months ended						Six months ended
		October 31,			October 31,			October 31,			October 31,
		2013			2012			2013			2012
	Defined Contribution
	Current service cost	$	0.6		$	0.6		$	1.5		$	1.6
	Defined Benefit
	Current service cost		—			0.4			—			0.8
	Interest cost		2.5			2.6			4.9			5.1
	Expected return on plan assets		(2.0	)		(1.9	)		(4.0	)		(3.8	)
	Recognized actuarial loss		0.3			0.6			0.7			1.3
	Total periodic benefit cost, net	$	1.4		$	2.3		$	3.1		$	5

SHARE_CAPITAL_Tables

SHARE CAPITAL (Tables)	6 Months Ended
	Oct. 31, 2013
Stock Option Activity	'
	Following is a summary of the Company’s stock option activity (in millions, except per option amounts):
			Six months ended
			October 31, 2013						October 31, 2012
			Number of			Weighted Average			Number of			Weighted Average
			Options			Exercise Price per			Options			Exercise Price per
						Option						Option
	Outstanding options:
	Balance, beginning of period			6.4		$	5.15			6.4		$	5.34
	Granted			1.6		$	4.43			0.8		$	3.59
	Exercised			(0.2	)	$	3.89			(0.1	)	$	3.76
	Forfeited			—	(1)	$	4.61			(0.1	)	$	5.19
	Expired			(0.1	)	$	6.03			(0.2	)	$	5.42
	Balance, end of period			7.7		$	5.03			6.8		$	5.14
	Number of options exercisable			4.2		$	5.25			3.3		$	5.25
	-1	Number of options is less than 0.1 for the period.
Black-Scholes Option-Pricing Model used to Determine Fair Value of Stock Option Grants	'
	The Company used the Black-Scholes option-pricing model to determine the fair value of the stock option grants during the period. The assumptions used are summarized as follows:
			Three months ended
			October 31, 2013			July 31, 2013			October 31, 2012			July 31, 2012
	Number of options granted			0.6			1			0.3			0.5
	Risk-free interest rate			1.4	%		1.3	%		0.7	%		0.7	%
	Dividends			0	%		0	%		0	%		0	%
	Expected volatility			55	%		55	%		55	%		55	%
	Annual forfeiture rate			10	%		10	%		10	%		10	%
	Expected life of the options			4.6 years			4.6 years			4.6 years			4.6 years
	Fair value per option		$	2.61		$	1.75		$	1.18		$	1.91

WARRANTS_Tables

WARRANTS (Tables)	6 Months Ended
	Oct. 31, 2013
Carrying Value of Warrants Outstanding	'
	The following table outlines the carrying value of warrants outstanding:
			October 31, 2013		April 30, 2013
	Warrants issued in connection with government funding(1)		$	39.1	$	39.1
	-1	At October 31, 2013, there were 2.48 million warrants outstanding that were issued in connection with government funding (April 30, 2013—2.48 million). The warrants have an exercise price of nil, are exercisable at any time at the option of the holder and have no expiry date.

WEIGHTED_AVERAGE_COMMON_SHARES1

WEIGHTED AVERAGE COMMON SHARES OUTSTANDING (Tables)	6 Months Ended
	Oct. 31, 2013
Basic and Diluted Weighted Average Common Shares Outstanding for Earnings Per Share Calculations	'
	The following table sets forth the basic and diluted weighted average common shares outstanding as required for earnings per share calculations as disclosed on the consolidated statements of operations:
		Three months ended				Six months ended
		October 31,		October 31,		October 31,		October 31,
		2013		2012		2013		2012
	Weighted average common shares outstanding during the period, basic		53.8		53.7		53.8		53.6
	Dilutive effect of options		0.5		—		0.1		—
	Dilutive effect of warrants		2.5		—		2.5		—
	Weighted average common shares outstanding during the period, diluted		56.8		53.7		56.4		53.6
Exercise Price of Securities	'
Securities Excluded from Diluted Weighted Average Common Shares Outstanding	'
	The following securities have been excluded from the diluted weighted average common shares outstanding because they were anti-dilutive based on the exercise price of the securities:
		Three Months Ended				Six Months Ended
	(Average number outstanding, in millions)	October 31,		October 31,		October 31,		October 31,
		2013		2012		2013		2012
	Stock options		4.7		6.2		5.2		4.7
Net loss attributable to common shareholders from continuing operations	'
Securities Excluded from Diluted Weighted Average Common Shares Outstanding	'
	The following securities have been excluded from the diluted weighted average common shares outstanding because they were anti-dilutive based on having a net loss attributable to common shareholders from continuing operations for the following periods:
	(Average number outstanding, in millions)	Three Months		Six Months
		Ended		Ended
		October 31,		October 31,
		2012		2012
	Stock options		—		1.6
	Warrants		2.5		2.5

SPECIAL_CHARGES_AND_RESTRUCTUR1

SPECIAL CHARGES AND RESTRUCTURING COSTS (Tables)	6 Months Ended
	Oct. 31, 2013
Summary of Change in Provision for Special Charges and Restructuring Costs	'
	The following tables summarize the change in provision during the first six months of fiscal 2014:
	Description	Workforce			Lease			Total
		Reduction			Termination
					Obligation
	Balance of provision as of April 30, 2013	$	2.3		$	6.2		$	8.5
	Charges		2.4			1.8			4.2
	Cash payments		(2.6	)		(1.1	)		(3.7	)
	Balance of provision as of July 31, 2013	$	2.1		$	6.9		$	9
	Charges		2.3			0.9			3.2
	Cash payments		(2.2	)		(1.6	)		(3.8	)
	Balance of provision as of October 31, 2013	$	2.2		$	6.2		$	8.4
	The following tables summarize the change in provision during the first six months of fiscal 2013:
	Description	Workforce			Lease			Total
		Reduction			Termination
					Obligation
	Balance of provision as of April 30, 2012	$	1.5		$	9.2		$	10.7
	Charges		1.1			0.9			2
	Cash payments		(1.4	)		(2.2	)		(3.6	)
	Balance of provision as of July 31, 2012	$	1.2		$	7.9		$	9.1
	Charges		6			3.3			9.3
	Cash payments		(4.7	)		(1.6	)		(6.3	)
	Balance of provision as of October 31, 2012	$	2.5		$	9.6		$	12.1

SEGMENT_INFORMATION_Tables

SEGMENT INFORMATION (Tables)	6 Months Ended
	Oct. 31, 2013
Segment Information	'
	The following table presents the results of operations for the Company’s three segments:
		Three months ended October 31, 2013									Three months ended October 31, 2012
		MCS		NetSolutions		Other		Total			MCS		NetSolutions		Other		Total
	Revenues	$	118.8	$	22.1	$	4	$	144.9		$	122	$	20.9	$	2.6	$	145.5
	Segment income		29.6		4.5		1		35.1			29.3		4.9		0.5		34.7
	Corporate and unallocated:
	SG&A								(21.4	)								(21.2	)
	Special charges and restructuring costs								(4.9	)								(9.3	)
	Litigation settlement obligation								—									(0.4	)
	Operating income							$	8.8								$	3.8
		Six months ended October 31, 2013									Six months ended October 31, 2012
		MCS		NetSolutions		Other		Total			MCS		NetSolutions		Other		Total
	Revenues	$	236.7	$	43.8	$	6	$	286.5		$	236.5	$	41.6	$	5.9	$	284
	Segment income		57.6		9		1.2		67.8			50.3		9.5		1		60.8
	Corporate and unallocated:
	SG&A								(43.9	)								(44.4	)
	Special charges and restructuring costs								(10.2	)								(11.3	)
	Litigation settlement obligation								—									(1.1	)
	Operating income							$	13.7								$	4
Revenues from External Customers	'
	Revenues from external customers are attributed to the following countries based on location of the customers.
		Three months ended				Six months ended
		October 31,		October 31,		October 31,		October 31,
		2013		2012		2013		2012
	United States	$	91.9	$	94.7	$	182.4	$	183
	United Kingdom		26.1		27		51.6		53.3
	Canada		8.3		6.7		16.8		14.8
	Other foreign countries		18.6		17.1		35.7		32.9
		$	144.9	$	145.5	$	286.5	$	284

SUPPLEMENTARY_CASH_FLOW_INFORM1

SUPPLEMENTARY CASH FLOW INFORMATION (Tables)	6 Months Ended
	Oct. 31, 2013
Supplementary Cash Flow Information	'
			Three months ended						Six months ended
			October 31,			October 31,			October 31,			October 31,
			2013			2012			2013			2012
	Changes in non-cash operating assets and liabilities:
	Accounts receivable and sales-type lease receivables		$	0.3		$	1.6		$	13.9		$	19.1
	Inventories			3.2			0.5			5.3			(0.7	)
	Other current assets(1)			1.8			1.4			3.4			1.2
	Other non-current assets			0.6			0.4			(0.1	)		(0.4	)
	Accounts payable and accrued liabilities			1			5.8			(8.7	)		(5.4	)
	Deferred revenue			1			(0.7	)		1			(1.8	)
	Other non-current liabilities			0.4			2.2			0.8			1.4
	Pension liability			(0.9	)		0.4			(1.3	)		1
			$	7.4		$	11.6		$	14.3		$	14.4
	Other items:
	Interest payments		$	6		$	1.5		$	11.8		$	7.4
	Income tax payments		$	4.5		$	4.3		$	5.3		$	8.6
	Property and equipment additions financed through capital lease		$	1.3		$	3.5		$	2.8		$	5.4
	-1	Included in other current assets on the consolidated balance sheets is restricted cash, the change in which is presented separately on the consolidated statements of cash flows.

FAIR_VALUE_MEASUREMENTS_Tables

FAIR VALUE MEASUREMENTS (Tables)	6 Months Ended
	Oct. 31, 2013
Assets/Liabilities Measured at Fair Value on Recurring Basis	'
	Assets/Liabilities Measured at Fair Value on a Recurring Basis
		Fair Value Measurement at October 31, 2013
		Quoted Price in		Significant		Significant		Total
		Active Markets		Other		Unobservable
		for Identical		Observable		Inputs
		Instruments		Inputs
		Level 1		Level 2		Level 3
	Assets
	Cash equivalents	$	—	$	18	$	—	$	18
	Restricted cash		0.3		—		—		0.3
	Forward contracts		—		0.1		—		0.1
		$	0.3	$	18.1	$	—	$	18.4
	Liabilities
	Forward contracts	$	—	$	0.1	$	—	$	0.1
		Fair Value Measurement at April 30, 2013
		Quoted Price in		Significant		Significant		Total
		Active Markets		Other		Unobservable
		for Identical		Observable		Inputs
		Instruments		Inputs
		Level 1		Level 2		Level 3
	Assets
	Cash equivalents	$	—	$	9	$	—	$	9
	Restricted cash		0.4		—		—		0.4
	Forward contracts		—		0.1		—		0.1
	Investment		—		—		1		1
		$	0.4	$	9.1	$	1	$	10.5
	Liabilities
	Forward contracts	$	—	$	0.1	$	—	$	0.1

Acquisition_Additional_Informa

Acquisition - Additional Information (Detail) (prairieFyre Software Inc, USD $)	1 Months Ended	3 Months Ended	6 Months Ended	12 Months Ended
In Millions, unless otherwise specified	Jun. 17, 2013	Oct. 31, 2013	Oct. 31, 2013	Apr. 30, 2013
Business Acquisition [Line Items]	'	'	'	'
Net cash cost to Mitel for the acquisition	$20	'	'	'
Equity ownership interest in prairieFyre	100.00%	'	'	'
Cash paid	27.3	'	'	'
Cash and cash equivalents acquired	4.2	'	'	'
Fair value of the pre-existing contract	0.4	'	'	'
Revenue recorded	'	5.2	7.9	'
Net income recorded	'	1.4	2.1	'
Amortization of intangible assets	'	'	'	2.8
Local effective tax rate	'	'	10.00%	'
Intercompany	'	'	'	'
Business Acquisition [Line Items]	'	'	'	'
Acquired accounts receivable due from Mitel	$3.10	'	'	'

Purchase_Price_and_Allocations

Purchase Price and Allocations (Detail) (USD $)	6 Months Ended		1 Months Ended
In Millions, unless otherwise specified	Oct. 31, 2013	Apr. 30, 2013	Jun. 17, 2013		Jun. 17, 2013	Jun. 17, 2013	Jun. 17, 2013		Jun. 17, 2013
			prairieFyre Software Inc		prairieFyre Software Inc	prairieFyre Software Inc	prairieFyre Software Inc		prairieFyre Software Inc
					Intercompany	Due from Other Parties	Customer relationships		Developed Technology
Net assets:	'	'	'		'	'	'		'
Cash	'	'	$4.20		'	'	'		'
Accounts receivable	'	'	'		3.1	0.4	'		'
Other current assets	'	'	1.3		'	'	'		'
Property and equipment	'	'	0.3		'	'	'		'
Intangible assets	'	'	'		'	'	0.3	[1],[2]	11	[1],[3]
Goodwill	147.3	132.6	14.7	[1]	'	'	'		'
Accounts payable and accrued liabilities	'	'	-1.3		'	'	'		'
Deferred revenue, current	'	'	-3.9		'	'	'		'
Deferred revenue, non-current	'	'	-1.8		'	'	'		'
Deferred tax liability	'	'	-1		'	'	'		'
Net assets acquired	'	'	27.3		'	'	'		'
Purchase price:	'	'	'		'	'	'		'
Amount paid	'	'	27.3		'	'	'		'
Cash and cash equivalents acquired	'	'	-4.2		'	'	'		'
Purchase price net of cash acquired	23.1	'	23.1		'	'	'		'
Intercompany accounts receivable	'	'	-3.1		'	'	'		'
Purchase price net of cash and intercompany receivable acquired	'	'	$20		'	'	'		'
[1]	Neither the goodwill nor the intangible assets are expected to be deductible for tax purposes.
[2]	Intangible assets - customer relationships consist of non-Mitel customer relationships and are being amortized over the expected useful life of the asset of 4 years.
[3]	Intangible assets - developed technology is being amortized over the expected useful life of the asset of 4 years.

Purchase_Price_and_Allocations1

Purchase Price and Allocations (Parenthetical) (Detail) (prairieFyre Software Inc)	1 Months Ended
	Jun. 17, 2013
Customer relationships	'
Business Acquisition [Line Items]	'
Expected useful life of Intangible assets	'4 years
Developed Technology	'
Business Acquisition [Line Items]	'
Expected useful life of Intangible assets	'4 years

ProForma_Financial_Information

Pro-Forma Financial Information (Detail) (prairieFyre Software Inc, USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Oct. 31, 2013	Oct. 31, 2012	Oct. 31, 2013	Oct. 31, 2012
prairieFyre Software Inc	'	'	'	'
Business Acquisition [Line Items]	'	'	'	'
Revenues	$144.90	$145.70	$286.60	$284.40
Net income (loss)	$5.40	($1.90)	$2.30	($4)

SalesType_Leases_Detail

Sales-Type Leases (Detail) (USD $)	Oct. 31, 2013		Jul. 31, 2013	Apr. 30, 2013		Apr. 30, 2012
In Millions, unless otherwise specified
Sales Type Lease Receivables [Line Items]	'		'	'		'
Lease balances included in consolidated accounts receivable, gross	$5.50		'	$6.70		'
Current portion of investment in sales-type leases, gross	14.8		'	16		'
Non-current portion of investment in sales-type leases, gross	15		'	19.4		'
Total unsold sales-type leases (recorded as assets, net, on the consolidated balance sheets), gross	35.3		'	42.1		'
Sold rental payments remaining unbilled, gross	96.1		'	111.2		'
Total of sales-type leases unsold and sold, gross	131.4		'	153.3		'
Lease balances included in consolidated accounts receivable, allowance	-0.7		'	-1.6		'
Current portion of investment in sales-type leases, allowance	-0.5		'	-0.6		'
Non-current portion of investment in sales-type leases, allowance	-0.6		'	-0.7		'
Total unsold sales-type leases (recorded as assets, net, on the consolidated balance sheets), allowance	-1.8		'	-2.9		'
Sold rental payments remaining unbilled, allowance	-3.7	[1]	'	-3.8	[1]	'
Total of sales-type leases unsold and sold, allowance	-5.5		-7	-6.7		-9.4
Lease balances included in consolidated accounts receivable, net	4.8		'	5.1		'
Current portion of investment in sales-type leases, net	14.3		'	15.4		'
Non-current portion of investment in sales-type leases, net	14.4		'	18.7		'
Total unsold sales-type leases (recorded as assets, net, on the consolidated balance sheets), net	33.5		'	39.2		'
Sold rental payments remaining unbilled, net	92.4		'	107.4		'
Total of sales-type leases unsold and sold, net	$125.90		'	$146.60		'
[1]	Allowance for sold rental payments is recorded as a lease recourse liability on the consolidated balance sheets

Recovered_Sheet1

Net Investment in Sales-Type Leases - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Oct. 31, 2013	Oct. 31, 2012	Oct. 31, 2013	Oct. 31, 2012
Sales Type Lease Receivables [Line Items]	'	'	'	'
Sale of rental payments	$5.40	$9.50	$13.20	$17.90
Gains on sale of rental payments	$0.90	$1.40	$2.10	$2.70

Aging_Analysis_of_Financing_Re

Aging Analysis of Financing Receivables (Detail) (USD $)	Oct. 31, 2013	Jul. 31, 2013	Apr. 30, 2013	Apr. 30, 2012
In Millions, unless otherwise specified
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'	'	'
Total of sales-type leases unsold and sold, net	$125.90	'	$146.60	'
Sales-type lease receivables not past due, allowance	-2.6	'	-3.4	'
Sales-type lease receivables 1-90 days past due, allowance	-1.4	'	-1.6	'
Sales-type lease receivables greater than 90 days past due, allowance	-1.5	'	-1.7	'
Sales-type lease receivables total past due, allowance	-2.9	'	-3.3	'
Total of sales-type leases unsold and sold, allowance	-5.5	-7	-6.7	-9.4
Lease balances included in consolidated accounts receivable	'	'	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'	'	'
Not past due	3	'	2.9	'
1-90 days past due	1.6	'	1.7	'
Greater than 90 days past due	0.9	'	2.1	'
Total past due	2.5	'	3.8	'
Total of sales-type leases unsold and sold, net	5.5	'	6.7	'
Investment in sold and unsold sales-type lease receivables	'	'	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'	'	'
Not past due	112.5	'	132.1	'
1-90 days past due	12.4	'	12.8	'
Greater than 90 days past due	1	'	1.7	'
Total past due	13.4	'	14.5	'
Total of sales-type leases unsold and sold, net	125.9	'	146.6	'
Total gross sales-type leases	'	'	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'	'	'
Not past due	115.5	'	135	'
1-90 days past due	14	'	14.5	'
Greater than 90 days past due	1.9	'	3.8	'
Total past due	15.9	'	18.3	'
Total of sales-type leases unsold and sold, net	131.4	'	153.3	'
Net sales-type leases	'	'	'	'
Financing Receivable, Recorded Investment, Past Due [Line Items]	'	'	'	'
Not past due	112.9	'	131.6	'
1-90 days past due	12.6	'	12.9	'
Greater than 90 days past due	0.4	'	2.1	'
Total past due	13	'	15	'
Total of sales-type leases unsold and sold, net	$125.90	'	$146.60	'

Activity_of_Allowance_for_Cred

Activity of Allowance for Credit Losses on Sales-Type Leases (Detail) (USD $)	3 Months Ended		12 Months Ended
In Millions, unless otherwise specified	Oct. 31, 2013	Jul. 31, 2013	Apr. 30, 2013
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'	'
Allowance for credit losses on sales-type leases, beginning balance	($7)	($6.70)	($9.40)
Write-offs	1.7	0.4	3.4
Recoveries	-0.1	'	-0.1
Provision	-0.1	-0.7	-0.6
Allowance for credit losses on sales-type leases, ending balance	($5.50)	($7)	($6.70)

Amount_of_Gross_SalesType_Leas

Amount of Gross Sales-Type Leases Individually and Collectively Evaluated for Impairment (Detail) (USD $)	Oct. 31, 2013	Apr. 30, 2013
In Millions, unless otherwise specified
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Individually evaluated for impairment Sales-type leases individually evaluated for impairment, gross	$5.40	$7.20
Allowance against sales-type leases individually evaluated for impairment	-2.6	-3
Sales-type leases individually evaluated for impairment, net	2.8	4.2
Collectively evaluated for impairment Sales-type leases collectively evaluated for impairment, gross	126	146.1
Allowance against sales-type leases collectively evaluated for impairment	-2.9	-3.7
Sales-type leases collectively evaluated for impairment, net	$123.10	$142.40

Inventories_Detail

Inventories (Detail) (USD $)	Oct. 31, 2013	Apr. 30, 2013
In Millions, unless otherwise specified
Inventory [Line Items]	'	'
Raw materials and work in process	$2.50	$2.50
Finished goods	25.1	29.9
Less: provision for obsolete inventory	-3.3	-4.5
Inventories, net	$24.30	$27.90

Other_Current_Assets_Detail

Other Current Assets (Detail) (USD $)	Oct. 31, 2013	Apr. 30, 2013
In Millions, unless otherwise specified
Other Assets, Current [Line Items]	'	'
Prepaid expenses and deferred charges	$14.70	$12.60
Unbilled receivables	3.9	3.5
Due from related parties (note 9)	1.2	1
Other receivables	7.8	11.5
Service inventory	2.9	3.4
Restricted cash	0.3	0.4
Other current assets	$30.80	$32.40

Recovered_Sheet2

Identifiable Intangible Assets (Detail) (USD $)	Oct. 31, 2013	Apr. 30, 2013
In Millions, unless otherwise specified
Intangible Assets by Major Class [Line Items]	'	'
Cost	$209.70	$197.30
Accumulated amortization	-154.8	-141.4
Net	54.9	55.9
Patent, trademarks and other	'	'
Intangible Assets by Major Class [Line Items]	'	'
Cost	19.7	18.6
Accumulated amortization	-14.8	-13.7
Net	4.9	4.9
Customer relationships	'	'
Intangible Assets by Major Class [Line Items]	'	'
Cost	100.2	99.9
Accumulated amortization	-77.8	-71.5
Net	22.4	28.4
Developed technology	'	'
Intangible Assets by Major Class [Line Items]	'	'
Cost	89.8	78.8
Accumulated amortization	-62.2	-56.2
Net	$27.60	$22.60

Recovered_Sheet3

Accounts Payable and Accrued Liabilities (Detail) (USD $)	Oct. 31, 2013	Apr. 30, 2013
In Millions, unless otherwise specified
Accounts Payable and Accrued Liabilities [Line Items]	'	'
Trade payables	$31	$37
Employee-related payables	13.9	13.7
Accrued liabilities	31.5	32
Restructuring, warranty and other provisions	7.6	7.5
Due to related parties (note 9)	0.5	0.8
Other payables	6.8	10.1
Accounts payable and accrued liabilities	$91.30	$101.10

Related_Party_Transactions_Add

Related Party Transactions - Additional Information (Detail) (Related party, USD $)

3 Months Ended

6 Months Ended

1 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

In Millions, unless otherwise specified

Oct. 31, 2013

Oct. 31, 2012

Oct. 31, 2013

Oct. 31, 2012

Nov. 30, 2013

Oct. 31, 2013

Oct. 31, 2012

Oct. 31, 2013

Oct. 31, 2012

Oct. 31, 2012

Oct. 31, 2013

Oct. 31, 2012

Lease Properties

Lease Properties

Lease Properties

Lease Properties

Lease Properties

Other Related Party Transactions

Other Related Party Transactions

Other Related Party Transactions

Other Related Party Transactions

Investment

Investment

Investment

Subsequent Event

Related Party Transaction [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

Lease expense

$1.40

$1.20

$2.60

$2.30

'

'

'

'

'

'

'

'

Lease term

'

'

'

'

'5 years 2 months

'

'

'

'

'

'

'

Optional lease renewal term

'

'

'

'

'5 years

'

'

'

'

'

'

'

Lease expiration date

'

'

'

'

30-Apr-21

'

'

'

'

'

'

'

Amount paid for option to invest

'

'

'

'

'

'

'

'

'

'

1

1

Sales to related party

'

'

'

'

'

'

'

'

'

0.2

0.1

0.2

Purchases from related party

'

'

'

'

'

0.5

0.5

0.9

1.3

0.1

'

0.4

Other sales to related party

'

'

'

'

'

$0.30

$0.40

$0.50

$0.60

'

'

'

Long_Term_Debt_Additional_Info

Long Term Debt - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended				1 Months Ended
In Millions, unless otherwise specified	Oct. 31, 2013	Oct. 31, 2012	Oct. 31, 2013	Oct. 31, 2012	Apr. 30, 2013	Oct. 31, 2013	Nov. 30, 2013
						Annual Repayment of Excess Cash Flows	Subsequent Event
							First Lien
Debt Instrument [Line Items]	'	'	'	'	'	'	'
Current portion of long -term debt	$21.30	'	$21.30	'	$6.50	$14.20	'
Number of days annual excess cash flow payment is due subsequent to fiscal year-end	'	'	'100 days	'	'	'	'
Repayment of long-term debt	$0.50	$2.20	$1.50	$2.20	'	'	$20

Pension_Plans_Additional_Infor

Pension Plans - Additional Information (Detail) (USD $)	6 Months Ended	12 Months Ended
In Millions, unless otherwise specified	Oct. 31, 2013	Apr. 30, 2013
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	'	'
Liability for defined benefit pension plan	$71.20	$90.50
Discount rate	4.40%	4.10%

Net_Periodic_Benefit_Cost_Deta

Net Periodic Benefit Cost (Detail) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Oct. 31, 2013	Oct. 31, 2012	Oct. 31, 2013	Oct. 31, 2012
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'
Defined Contribution, Current service cost	$0.60	$0.60	$1.50	$1.60
Defined Benefit, Current service cost	'	0.4	'	0.8
Defined Benefit, Interest cost	2.5	2.6	4.9	5.1
Defined Benefit, Expected return on plan assets	-2	-1.9	-4	-3.8
Defined Benefit, Recognized actuarial loss	0.3	0.6	0.7	1.3
Total periodic benefit cost, net	$1.40	$2.30	$3.10	$5

Recovered_Sheet4

Commitments Guarantees and Contingencies - Additional Information (Detail) (Subsequent Event, Aastra Technologies Limited, USD $)	0 Months Ended
In Millions, unless otherwise specified	Nov. 10, 2013
Subsequent Event | Aastra Technologies Limited	'
Commitments and Contingencies Disclosure [Line Items]	'
Cash payment to acquire business	$80
Payment to acquire business, shares issuable	44

Share_Capital_Additional_Infor

Share Capital - Additional Information (Detail)	Oct. 31, 2013	Apr. 30, 2013
In Millions, unless otherwise specified	Vote	Vote
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Common share holders vote per share	1	1
Number of options (and all other security-based compensation) available for grant under 2006 Equity Incentive Plan	2.1	3.6

Stock_Option_Activity_Detail

Stock Option Activity (Detail) (USD $)	3 Months Ended				6 Months Ended
In Millions, except Per Share data, unless otherwise specified	Oct. 31, 2013	Jul. 31, 2013	Oct. 31, 2012	Jul. 31, 2012	Oct. 31, 2013	Oct. 31, 2012
Number of Options	'	'	'	'	'	'
Outstanding balance at beginning of period	'	6.4	'	6.4	6.4	6.4
Granted	0.6	1	0.3	0.5	1.6	0.8
Exercised	'	'	'	'	-0.2	-0.1
Forfeited	'	'	'	'	'	-0.1
Expired	'	'	'	'	-0.1	-0.2
Outstanding balance at end of period	7.7	'	6.8	'	7.7	6.8
Number of options exercisable	4.2	'	3.3	'	4.2	3.3
Weighted Average Exercise Price per Option	'	'	'	'	'	'
Outstanding balance at beginning of period	'	$5.15	'	$5.34	$5.15	$5.34
Granted	'	'	'	'	$4.43	$3.59
Exercised	'	'	'	'	$3.89	$3.76
Forfeited	'	'	'	'	$4.61	$5.19
Expired	'	'	'	'	$6.03	$5.42
Outstanding balance at end of period	$5.03	'	$5.14	'	$5.03	$5.14
Number of options exercisable	$5.25	'	$5.25	'	$5.25	$5.25

Stock_Option_Activity_Parenthe

Stock Option Activity (Parenthetical) (Detail)	6 Months Ended
In Millions, unless otherwise specified	Oct. 31, 2013	Oct. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Number of options, Forfeited	'	0.1
Maximum	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Number of options, Forfeited	0.1	0.1

Assumptions_Used_in_BlackSchol

Assumptions Used in Black-Scholes Option-Pricing Model (Detail) (USD $)	3 Months Ended				6 Months Ended
In Millions, except Per Share data, unless otherwise specified	Oct. 31, 2013	Jul. 31, 2013	Oct. 31, 2012	Jul. 31, 2012	Oct. 31, 2013	Oct. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'	'	'
Number of options granted	0.6	1	0.3	0.5	1.6	0.8
Risk-free interest rate	1.40%	1.30%	0.70%	0.70%	'	'
Dividends	0.00%	0.00%	0.00%	0.00%	'	'
Expected volatility	55.00%	55.00%	55.00%	55.00%	'	'
Annual forfeiture rate	10.00%	10.00%	10.00%	10.00%	'	'
Expected life of the options	'4 years 7 months 6 days	'4 years 7 months 6 days	'4 years 7 months 6 days	'4 years 7 months 6 days	'	'
Fair value per option	$2.61	$1.75	$1.18	$1.91	'	'

Carrying_Value_of_Warrants_Out

Carrying Value of Warrants Outstanding (Detail) (USD $)	Oct. 31, 2013		Apr. 30, 2013
In Millions, unless otherwise specified
Class of Warrant or Right [Line Items]	'		'
Warrants issued in connection with government funding	$39.10	[1]	$39.10	[1]
[1]	At October 31, 2013, there were 2.48 million warrants outstanding that were issued in connection with government funding (April 30, 2013-2.48 million). The warrants have an exercise price of nil, are exercisable at any time at the option of the holder and have no expiry date.

Carrying_Value_of_Warrants_Out1

Carrying Value of Warrants Outstanding (Parenthetical) (Detail)	Oct. 31, 2013	Apr. 30, 2013
In Millions, unless otherwise specified
Class of Warrant or Right [Line Items]	'	'
Warrants, outstanding	2.48	2.48
Warrants, exercise price	'	'

Basic_and_Diluted_Weighted_Ave

Basic and Diluted Weighted Average Common Shares Outstanding for Earnings Per Share Calculations (Detail)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Oct. 31, 2013	Oct. 31, 2012	Oct. 31, 2013	Oct. 31, 2012
Weighted Average Number of Shares Outstanding [Line Items]	'	'	'	'
Weighted average common shares outstanding during the period, basic	53.8	53.7	53.8	53.6
Weighted average common shares outstanding during the period, diluted	56.8	53.7	56.4	53.6
Stock Options	'	'	'	'
Weighted Average Number of Shares Outstanding [Line Items]	'	'	'	'
Dilutive effect of common shares	0.5	'	0.1	'
Warrants	'	'	'	'
Weighted Average Number of Shares Outstanding [Line Items]	'	'	'	'
Dilutive effect of common shares	2.5	'	2.5	'

Securities_Excluded_from_Compu

Securities Excluded from Computation of Diluted Earnings Per Share (Detail)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Oct. 31, 2013	Oct. 31, 2012	Oct. 31, 2013	Oct. 31, 2012
Stock Options	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Average number outstanding	4.7	6.2	5.2	4.7
Stock Options | Net loss attributable to common shareholders from continuing operations	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Average number outstanding	'	'	'	1.6
Warrants | Net loss attributable to common shareholders from continuing operations	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Average number outstanding	'	2.5	'	2.5

Recovered_Sheet5

Weighted Average Common Shares Outstanding - Additional Information (Detail)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Oct. 31, 2013	Jul. 31, 2012	Oct. 31, 2013	Oct. 31, 2012
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Number of contingently issuable shares of stock options which could potentially dilute basic earnings per share in future periods	0.5	0.5	0.5	0.5

Recovered_Sheet6

Special Charges and Restructuring Costs - Additional Information (Detail) (USD $)	3 Months Ended			6 Months Ended
In Millions, unless otherwise specified	Oct. 31, 2013	Jul. 31, 2013	Oct. 31, 2012	Oct. 31, 2013	Oct. 31, 2012	Apr. 30, 2013
Restructuring Cost and Reserve [Line Items]	'	'	'	'	'	'
Special charges and restructuring costs	$4.90	$5.30	$9.30	$10.20	$11.30	'
Provision for Restructuring Cost	5.9	'	'	5.9	'	6.7
Workforce Reduction	'	'	'	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'	'	'	'
Special charges and restructuring costs	3.2	4.2	'	'	'	'
Merger, acquisition and integration activity	'	'	'	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'	'	'	'
Special charges and restructuring costs	$1.70	$1.10	'	'	'	'

Summary_of_Change_in_Provision

Summary of Change in Provision for Special Charges and Restructuring Costs (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Oct. 31, 2013	Jul. 31, 2013	Oct. 31, 2012	Jul. 31, 2012
Restructuring Cost and Reserve [Line Items]	'	'	'	'
Beginning balance of provision	$9	$8.50	$9.10	$10.70
Charges	3.2	4.2	9.3	2
Cash payments	-3.8	-3.7	-6.3	-3.6
Ending balance of provision	8.4	9	12.1	9.1
Workforce Reduction	'	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'	'
Beginning balance of provision	2.1	2.3	1.2	1.5
Charges	2.3	2.4	6	1.1
Cash payments	-2.2	-2.6	-4.7	-1.4
Ending balance of provision	2.2	2.1	2.5	1.2
Lease Termination Obligation	'	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'	'
Beginning balance of provision	6.9	6.2	7.9	9.2
Charges	0.9	1.8	3.3	0.9
Cash payments	-1.6	-1.1	-1.6	-2.2
Ending balance of provision	$6.20	$6.90	$9.60	$7.90

Segment_Information_Additional

Segment Information - Additional Information (Detail)	6 Months Ended
	Oct. 31, 2013
	Entity
Segment Reporting Information [Line Items]	'
Number of business units	3

Financial_Information_by_Opera

Financial Information by Operating Segment (Detail) (USD $)	3 Months Ended			6 Months Ended
In Millions, unless otherwise specified	Oct. 31, 2013	Jul. 31, 2013	Oct. 31, 2012	Oct. 31, 2013	Oct. 31, 2012
Segment Reporting Information [Line Items]	'	'	'	'	'
Revenues	$144.90	'	$145.50	$286.50	$284
Segment income	35.1	'	34.7	67.8	60.8
SG&A	-21.4	'	-21.2	-43.9	-44.4
Special charges and restructuring costs	-4.9	-5.3	-9.3	-10.2	-11.3
Litigation settlement obligation	'	'	-0.4	'	-1.1
Operating income from continuing operations	8.8	'	3.8	13.7	4
MCS	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Revenues	118.8	'	122	236.7	236.5
Segment income	29.6	'	29.3	57.6	50.3
NetSolutions	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Revenues	22.1	'	20.9	43.8	41.6
Segment income	4.5	'	4.9	9	9.5
Other	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Revenues	4	'	2.6	6	5.9
Segment income	$1	'	$0.50	$1.20	$1

Revenues_from_External_Custome

Revenues from External Customers (Detail) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Oct. 31, 2013	Oct. 31, 2012	Oct. 31, 2013	Oct. 31, 2012
Geographic Reporting Disclosure [Line Items]	'	'	'	'
Revenues	$144.90	$145.50	$286.50	$284
United States	'	'	'	'
Geographic Reporting Disclosure [Line Items]	'	'	'	'
Revenues	91.9	94.7	182.4	183
United Kingdom	'	'	'	'
Geographic Reporting Disclosure [Line Items]	'	'	'	'
Revenues	26.1	27	51.6	53.3
Canada	'	'	'	'
Geographic Reporting Disclosure [Line Items]	'	'	'	'
Revenues	8.3	6.7	16.8	14.8
Other foreign countries	'	'	'	'
Geographic Reporting Disclosure [Line Items]	'	'	'	'
Revenues	$18.60	$17.10	$35.70	$32.90

Recovered_Sheet7

Supplementary Cash Flow Information (Detail) (USD $)	3 Months Ended				6 Months Ended
In Millions, unless otherwise specified	Oct. 31, 2013		Oct. 31, 2012		Oct. 31, 2013		Oct. 31, 2012
Changes in non-cash operating assets and liabilities:	'		'		'		'
Accounts receivable and sales-type lease receivables	$0.30		$1.60		$13.90		$19.10
Inventories	3.2		0.5		5.3		-0.7
Other current assets	1.8	[1]	1.4	[1]	3.4	[1]	1.2	[1]
Other non-current assets	0.6		0.4		-0.1		-0.4
Accounts payable and accrued liabilities	1		5.8		-8.7		-5.4
Deferred revenue	1		-0.7		1		-1.8
Other non-current liabilities	0.4		2.2		0.8		1.4
Pension liability	-0.9		0.4		-1.3		1
Change in non-cash operating assets and liabilities	7.4		11.6		14.3		14.4
Other items:	'		'		'		'
Interest payments	6		1.5		11.8		7.4
Income tax payments	4.5		4.3		5.3		8.6
Property and equipment additions financed through capital lease	$1.30		$3.50		$2.80		$5.40
[1]	Included in other current assets on the consolidated balance sheets is restricted cash, the change in which is presented separately on the consolidated statements of cash flows.

Recovered_Sheet8

Supplementary Cash Flow Information - Additional Information (Detail) (USD $)	Oct. 31, 2013	Apr. 30, 2013
In Millions, unless otherwise specified
Schedule of Cash Flow, Supplemental [Line Items]	'	'
Cash	$52.50	$60
Cash equivalents	$18	$9

Hedging_Activities_Additional_

Hedging Activities - Additional Information (Detail) (USD $)	6 Months Ended	12 Months Ended
In Millions, unless otherwise specified	Oct. 31, 2013	Apr. 30, 2013
Derivative Instruments and Hedging Activities Disclosures [Line Items]	'	'
Maximum forward contract term	'1 month	'1 month
Maximum	'	'
Derivative Instruments and Hedging Activities Disclosures [Line Items]	'	'
Net unrealized gain (loss) on fair value adjustments on outstanding forward contracts	-0.1	-0.1
Sale contracts	'	'
Derivative Instruments and Hedging Activities Disclosures [Line Items]	'	'
Forward contract notional amount	13.8	14.7
Purchase contracts	'	'
Derivative Instruments and Hedging Activities Disclosures [Line Items]	'	'
Forward contract notional amount	11.3	'

Assets_Liabilities_Measured_at

Assets Liabilities Measured at Fair Value on Recurring Basis (Detail) (Fair Value, Measurements, Recurring, USD $)	Oct. 31, 2013	Apr. 30, 2013
In Millions, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Cash equivalents	$18	$9
Restricted cash	0.3	0.4
Forward contracts	0.1	0.1
Investment	'	1
Assets, Fair Value Disclosure, Total	18.4	10.5
Forward contracts	0.1	0.1
Quoted Price in Active Markets for Identical Instruments (Level 1)	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Restricted cash	0.3	0.4
Assets, Fair Value Disclosure, Total	0.3	0.4
Significant Other Observable Inputs (Level 2)	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Cash equivalents	18	9
Forward contracts	0.1	0.1
Assets, Fair Value Disclosure, Total	18.1	9.1
Forward contracts	0.1	0.1
Significant Unobservable Inputs (Level 3)	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Investment	'	1
Assets, Fair Value Disclosure, Total	'	$1

Subsequent_Events_Additional_I

Subsequent Events - Additional Information (Detail) (Subsequent Event, Aastra Technologies Limited)	0 Months Ended						0 Months Ended
In Millions, unless otherwise specified	Nov. 10, 2013	Nov. 10, 2013	Nov. 10, 2013	Nov. 10, 2013	Nov. 10, 2013	Nov. 10, 2013	Nov. 10, 2013
	USD ($)	CAD	Executive Officer	Minimum	Term Loan	Revolving Credit Facility	Sales
	Director				USD ($)	USD ($)	Europe
Subsequent Event [Line Items]	'	'	'	'	'	'	'
Cash payment to acquire business	$80	'	'	'	'	'	'
Payment to acquire business, shares issuable	44	'	'	'	'	'	'
Revenue reported by acquired entity for last annual period	600	'	'	'	'	'	'
Concentration of risk	'	'	'	'	'	'	75.00%
Number of board of directors	8	'	'	'	'	'	'
Number of new board of directors	9	'	'	'	'	'	'
Number of directors to be resigned	2	'	'	'	'	'	'
Number of directors to be appointed	3	'	'	'	'	'	'
Debt instrument, face Amount	405	'	'	'	355	50	'
Percentage of required approval of acquiree shareholders	'	'	'	66.67%	'	'	'
Percentage of ownership interests of acquiree shareholders who have signed voting support agreements in favor of transaction	'	'	14.00%	'	'	'	'
Minimum shares to be issued as percentage of shares outstanding that require shareholders approval	25.00%	'	'	'	'	'	'
Percentage of ownership interests of shareholders who have signed voting support agreements in favor of transaction	60.00%	'	'	'	'	'	'
Termination fee if transaction is not completed	'	11	'	'	'	'	'