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Stock-based Compensation and Outstanding Awards - Summary of Stock Option Activity (Detail) (USD $)	1 Months Ended
	Jun. 30, 2014
Restricted Stock And Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards, Outstanding, Beginning balance	1,034,055
Awards, Granted post-Separation
Awards, Exercised or settled
Awards, Outstanding, Ending balance	1,034,055
Weighted-average Exercise Price, Outstanding, Beginning balance	$ 31.94
Weighted-average Exercise Price, Granted post-Separation
Weighted-average Exercise Price, Exercised or settled
Weighted-average Exercise Price, Outstanding, Ending balance	$ 31.94
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options, Outstanding, Beginning balance	3,599,654
Options, Granted post-Separation
Options, Exercised or settled	(4,667)
Options, Outstanding, Ending balance	3,594,987
Weighted-average Exercise Price, Options outstanding, Beginning balance	$ 30.85
Weighted-average Exercise Price, Options, Granted post-Separation
Weighted-average Exercise Price, Options, Exercised or settled	$ 32.57
Weighted-average Exercise Price, Options outstanding, Ending balance	$ 30.85

X

- Definition

Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Exercised In Period

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- Definition

Share Based Compensation Arrangement By Share Based Payment Award Non Option Equity Instruments Exercised Weighted Average Exercise Price

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Share Based Compensation Arrangements By Share Based Payment Award Non Option Equity Instruments Grants In Period Weighted Average Exercise Price

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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

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)(2)(iii)(1)

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

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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ 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)(2)(i)-(ii)

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

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

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

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

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-Paragraph 2

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

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(i)

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

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

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

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3



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