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Stockholders' Equity - Additional Information (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended	1 Months Ended
	Mar. 31, 2014	Sep. 06, 2013 2013 Program Maximum	Apr. 30, 2014 Dividend Declared Subsequent Event
Stockholders Equity Note [Line Items]
Dividend declaration date			Apr. 23, 2014
Dividend per share, declared			$ 0.10
Dividend payment date			Jun. 26, 2014
Dividend record date			Jun. 12, 2014
Amount approved for repurchases under stock buyback program		$ 200
Remaining Amount approved for repurchases under stock buyback program	$ 187

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- Definition

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

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

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- Definition

Date the declared dividend will be paid, in CCYY-MM-DD format.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586

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- Definition

Date the dividend to be paid was declared, in CCYY-MM-DD format.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586

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Date the holder must own the stock to be entitled to the dividend, in CCYY-MM-DD format.

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- Definition

Amount of a stock repurchase plan authorized by an entity's Board of Directors.

+ References

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Amount remaining of a stock repurchase plan authorized by an entity's Board of Directors.

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