Share-Based Compensation and Savings Plans (Schedule of All Stock Option Transactions Under the Plans) (Details) shares in Millions	3 Months Ended
Sep. 30, 2015 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Stock Options Outstanding at Beginning of Period \| shares	8
Stock Options Outstanding, Granted \| shares	1
Stock Options Outstanding, Exercised \| shares	(1)
Stock Options Outstanding, Canceled and forfeited \| shares	0
Stock Options Outstanding at End of Period \| shares	8
Stock Options Outstanding, Exercisable at End of Period \| shares	5
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted-Average Exercise Price [Roll Forward]
Weighted-Average Exercise Price Per Common Share, Outstanding at Beginning of Period	$ 46.50
Weighted-Average Exercise Price Per Common Share, Granted	84.28
Weighted-Average Exercise Price Per Common Share, Exercised	37.20
Weighted-Average Exercise Price Per Common Share, Canceled and forfeited	0.00
Weighted-Average Exercise Price Per Common Share, Outstanding at End of Period	53.24
Weighted-Average Exercise Price Per Common Share, Exercisable at End of Period	$ 42.18

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(iii)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

+ References

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- Definition

For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(iv)(3)-(4)

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- Definition

Weighted average price of options that were either forfeited or expired.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(iv)(3)-(4)

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- Definition

Gross number of share options (or share units) granted during the period.

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No definition available.

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

+ References

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

-Publisher FASB

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-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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- Definition

Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

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- Definition

Weighted average price at which option holders acquired shares when converting their stock options into shares.

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No definition available.

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- Definition

Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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No definition available.

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Number of share options (or share units) exercised during the current period.

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