Long-Term Compensation - RSU and Performance Share Awards (Detail) (USD $)	9 Months Ended
Sep. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Awards Vested, Ending Balance	5,511,000
RSU and PSA [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Awards, beginning balance	2,266,000
Granted	1,333,000
Vested and distributed	(1,019,000)
Forfeited	(54,000)
Number of Awards, ending balance	2,526,000
Weighted Average Grant-Date Fair Value, Ending balance	$ 39.39
Number of Awards Vested, Ending Balance	106,000

The number of equity instruments outstanding as of the balance sheet date.

No definition available.

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- Definition

The number of equity instruments that were canceled during the reporting period as a result of an occurrence of a terminating event specified in a contractual agreement pertaining to the equity instrument.

+ References

No definition available.

+ Details

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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

+ Details

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- Definition

The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.

+ References

+ Details

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

+ References

+ Details

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- Definition

Number of equity instruments other than options outstanding, including both vested and non-vested instruments.

+ 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)(i)

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

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(ii)

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

+ Details

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