Cash collected to be used to purchase Common Stock in future periods

No definition available.

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- Definition

Common Stock, Shares, Issued from Treasury Stock

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No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Award Expire Period, Maximum

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No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Award Expire Period, Minimum

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No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Annual Vest Rate, Number

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No definition available.

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- Definition

Share-based Compensation Arrangement by Share Based Payment Award, Estimated Award Grant Percentage Against Target

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No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Plan Term

+ References

No definition available.

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- Definition

The amount of distributions made to the individual during the period.

+ References

No definition available.

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- Definition

Aggregate proceeds received by the entity during the annual period from exercises of stock or unit options and conversion of similar instruments granted under equity-based payment arrangements.

+ References

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- Definition

As of the balance sheet date, the aggregate unrecognized cost of equity-based awards made to employees under equity-based compensation awards that have yet to vest.

+ References

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- Definition

The weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, using a decimal to express in number of years.

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- Definition

Disclosure of the aggregate tax benefit realized from the exercise of stock options and the conversion of similar instruments during the annual period.

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- Definition

The cash outflow to reacquire common stock during the period.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

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-Glossary Financing Activities

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- Definition

Description of the period of time over which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, which may be expressed in a variety of ways (for example, in years, month and year).

+ References

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- Definition

Equity-based compensation cost during the period with respect to the award, which will be recognized in income (as well as the total recognized tax benefit) or capitalized as part of the cost of an asset.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

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- Definition

The intrinsic value of equity-based payment equity instruments, excluding stock or unit options, granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

+ References

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- Definition

The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options.

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- Definition

The number of shares purchased on the open market during the period for issuance to employees under the plan.

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Share Capital, Option Plans And Share-Based Payments (Narrative) (Details) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended		9 Months Ended	3 Months Ended		9 Months Ended		3 Months Ended		0 Months Ended	3 Months Ended		9 Months Ended		3 Months Ended			12 Months Ended		3 Months Ended		9 Months Ended		12 Months Ended		2 Months Ended	12 Months Ended		2 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Mar. 31, 2012 Y	Mar. 31, 2011	Jun. 30, 2009	Jun. 30, 2011	Mar. 31, 2012 Stock Option [Member]	Mar. 31, 2012 Deferred Stock Units [Member]	Mar. 31, 2011 Deferred Stock Units [Member]	Mar. 31, 2012 Deferred Stock Units [Member]	Mar. 31, 2011 Deferred Stock Units [Member]	Mar. 31, 2012 Restricted Stock Units (RSU) [Member]	Sep. 30, 2007 Restricted Stock Units (RSU) [Member]	Jul. 21, 2009 Restricted Stock Awards [Member]	Mar. 31, 2012 Employee Share Purchase Plan [Member]	Mar. 31, 2011 Employee Share Purchase Plan [Member]	Mar. 31, 2012 Employee Share Purchase Plan [Member]	Mar. 31, 2011 Employee Share Purchase Plan [Member]	Mar. 31, 2012 Performance Stock Units [Member]	Sep. 30, 2010 LTIP 1 [Member]	Sep. 30, 2011 LTIP 2 [Member]	Jun. 30, 2010 LTIP 3 [Member]	Jun. 30, 2011 LTIP 4 [Member]	Mar. 31, 2012 LTIP 3 And LTIP 4 [Member]	Mar. 31, 2011 LTIP 3 And LTIP 4 [Member]	Mar. 31, 2012 LTIP 3 And LTIP 4 [Member]	Mar. 31, 2011 LTIP 3 And LTIP 4 [Member]	Jun. 30, 2010 Maximum [Member] LTIP 3 [Member]	Jun. 30, 2011 Maximum [Member] LTIP 4 [Member]	Mar. 31, 2012 Maximum [Member] LTIP 5 [Member]	Jun. 30, 2010 Minimum [Member] LTIP 3 [Member]	Jun. 30, 2011 Minimum [Member] LTIP 4 [Member]	Mar. 31, 2012 Minimum [Member] LTIP 5 [Member]
Share-based Compensation Arrangement By Share-based Payment Award [Line Items]
Purchase of treasury stock (in shares)		0		264,834
Purchase of treasury stock		$ (12,499,000)	$ 0	$ (12,499,000)
Common shares reissued (in shares)	0		0			0
Number of options outstanding (in shares)	2,002,776		2,002,776			2,277,733
Common shares available for issuance (in shares)	792,795		792,795
Vesting period (in years)							4 years					3 years
Expire period of options, minimum (in years)							7 years
Expire period of options, maximum (in years)							10 years
Unrecognized compensation cost relating to unvested stock awards	12,600,000		12,600,000
Unvested stock awards compensation cost, weighted average recognition period (in years)			3
Cash proceeds from exercise of options granted	6,500,000	4,400,000	16,700,000	8,300,000
Tax benefit realized from exercise of options	2,900,000	1,300,000	3,700,000	2,400,000
Amount granted (in shares)								2,066	1,548	9,089	6,426	33,333		574,767					219,721
Restricted stock units, vest rate (in shares)												11,111
Restricted stock awards granted, value (in dollars per share)														$ 13.33
Plan term (in years)													3 years
Awards settled in cash in the aggregate amount																				14,400,000	10,700,000
LTIP equity plans, estimated award grant percentage against target					100.00%																	100.00%	100.00%					150.00%	150.00%	150.00%	50.00%	50.00%	0.00%
Compensation cost expensed during the period-LTIP equity plans																								3,500,000	2,000,000	9,800,000	5,400,000
Cash received from employee stock purchase plan															$ 600,000	$ 500,000	$ 1,600,000	$ 1,100,000