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

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Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price Discount

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Aggregate number of common shares reserved for future issuance.

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Aggregate dividends declared during the period for each share of common stock outstanding.

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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.

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Unrecognized cost of unvested share-based compensation awards.

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Unrecognized cost of unvested share-based awards, other than options, awarded to employees as compensation.

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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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Cash outflow in the form of capital distributions and dividends to common shareholders, preferred shareholders and noncontrolling interests.

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Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt.

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Period 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, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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).

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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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.

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Number of options outstanding, including both vested and non-vested options.

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Number of treasury shares (units) reissued during the period, excluding reissuance of shares (units) held in treasury used to satisfy equity-based compensation obligations exercised by the holders of such rights. Upon reissuance of shares (units) from treasury, either the common or preferred stock (unit) reissued is outstanding.

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Equity impact of the value of treasury stock (units) reissued during the period, excluding reissuance of shares (units) held in treasury used to satisfy equity-based compensation obligations exercised by the holders of such rights. Upon reissuance of shares (units) from treasury, either the common or preferred stock (unit) reissued is outstanding.

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Amount of stock repurchase plan authorized.

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Number of shares that have been repurchased and retired during the period.

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Equity impact of the value of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital).

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Number of shares that have been repurchased during the period and are being held in treasury.

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Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

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Share Capital, Option Plans and Share-Based Payments (Narrative) (Details) - USD ($)				3 Months Ended	12 Months Ended
	Jul. 26, 2016	Mar. 31, 2016	Dec. 31, 2015	Dec. 31, 2015	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014	Jul. 28, 2015
Share-based Compensation Arrangement By Share-based Payment Award [Line Items]
Dividends declared per common share (in dollars per share)					$ 0.83	$ 0.7175	$ 0.6225
Payments of dividends to shareholders					$ (99,262,000)	$ (87,629,000)	$ (74,693,000)
Preference shares issued (in shares)					0
Common shares repurchased (in shares)					225,000	240,222	25,760
Purchase of treasury stock					$ 10,627,000	$ 10,557,000	$ 1,275,000
Amount authorized to be repurchased (up to)								$ 200,000,000
Common shares repurchased and cancelled during period, shares (in shares)					1,476,248
Common shares repurchased and cancelled during period, value					$ 65,509,000	$ 0	$ 0
Options outstanding (in shares)					4,177,408	4,375,365	4,273,226
Unrecognized compensation cost relating to unvested stock awards					$ 24,700,000
Unvested stock awards compensation cost, weighted average recognition period					2 years 3 months 19 days
Cash proceeds from exercise of options granted					$ 14,600,000	$ 12,200,000	$ 22,200,000
Tax benefit realized from exercise of options					800,000	1,000,000	1,800,000
Issuance of treasury stock					$ 0	$ 0	$ 0
Stock Options
Share-based Compensation Arrangement By Share-based Payment Award [Line Items]
Options outstanding (in shares)					4,177,408
Common shares available for issuance (in shares)					2,749,830
Expire period of options, minimum term					7 years
Expire period of options, maximum term					10 years
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement By Share-based Payment Award [Line Items]
Issuance of treasury stock (in shares)					15,000	22,222	22,222
Award vesting period					3 years
Issuance of treasury stock					$ 300,000	$ 1,300,000	$ 500,000
Units granted (in shares)					61,036	45,000	0
Deferred Stock Units
Share-based Compensation Arrangement By Share-based Payment Award [Line Items]
Units granted (in shares)					55,858	38,052	42,298
2015 Long Term Incentive Plan
Share-based Compensation Arrangement By Share-based Payment Award [Line Items]
Issuance of treasury stock (in shares)				202,078
Issuance of treasury stock				$ 5,000,000
Long Term Incentive Plan
Share-based Compensation Arrangement By Share-based Payment Award [Line Items]
Issuance of treasury stock (in shares)					217,078	377,775	484,238
Unvested stock awards compensation cost, weighted average recognition period					1 year 10 months
Compensation cost related to unvested awards not yet recognized					$ 12,900,000
Employee Share Purchase Plan
Share-based Compensation Arrangement By Share-based Payment Award [Line Items]
Awards purchase price discount		15.00%	5.00%
Common Stock, Capital Shares Reserved for Future Issuance					80,273
Cash received from employee stock purchase plan					$ 5,500,000	$ 3,100,000	$ 2,600,000
Minimum \| Stock Options
Share-based Compensation Arrangement By Share-based Payment Award [Line Items]
Award vesting period					4 years
Maximum \| Stock Options
Share-based Compensation Arrangement By Share-based Payment Award [Line Items]
Award vesting period					5 years
Accumulated Retained Earnings
Share-based Compensation Arrangement By Share-based Payment Award [Line Items]
Common shares repurchased and cancelled during period, value					$ 55,684,000
Subsequent Event
Share-based Compensation Arrangement By Share-based Payment Award [Line Items]
Dividends declared per common share (in dollars per share)	$ 0.23
Amount authorized to be repurchased (up to)	$ 200,000,000