AcceleratedShareRepurchaseContractedAmountofRepurchase

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- Definition

AcceleratedShareRepurchaseProgramFinalDeliveryofSharesShares

+ References

No definition available.

+ Details

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- Definition

Share Repurchases, Price Paid Per Share

+ References

No definition available.

+ Details

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- Definition

Stock Repurchase Program, Additional Amount Authorized

+ References

No definition available.

+ Details

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- Definition

StockRepurchaseProgramAuthorizedAmountforNextTwelveMonths

+ References

No definition available.

+ Details

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- Definition

Final price paid per share for the purchase of the targeted number of shares, determined by an average market price over a fixed period of time.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 30

-Section 25

-Paragraph 5

-URI http://asc.fasb.org/extlink&oid=6405686&loc=d3e22802-112653

+ Details

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- Definition

Amount of cash receipt from (payment to) bank; or stock received from (issuance to) bank in the settlement of the accelerated share repurchase agreement.

+ References

+ Details

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- Definition

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

+ 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 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 29, 30

-Article 5

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- Definition

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).

+ References

+ Details

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- Definition

Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

+ References

+ Details

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- Definition

Amount of stock repurchase plan authorized.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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- Definition

Amount remaining of a stock repurchase plan authorized.

+ References

No definition available.

+ Details

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Common Stock Repurchase Program - Additional Information (Detail) (USD $)	12 Months Ended			0 Months Ended				3 Months Ended	1 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Jul. 29, 2014	Apr. 29, 2014	Apr. 28, 2014	Apr. 23, 2014	Jul. 29, 2014	Jan. 31, 2015	Oct. 27, 2011
Share Repurchases [Line Items]
Common stock repurchased and retired	$ 98,233,000	$ 95,107,000	$ 47,203,000
Additional Paid-in Capital
Share Repurchases [Line Items]
Common stock repurchased and retired	17,804,000	24,528,000	15,399,000
Retained Earnings
Share Repurchases [Line Items]
Common stock repurchased and retired	80,429,000	70,579,000	31,804,000
October 2011 Stock Repurchase Program
Share Repurchases [Line Items]
Repurchase of common stock, common stock authorized										150,000,000
Common stock repurchased and retired (shares)		2,700,000	1,700,000
Common stock repurchased (in dollars per share)		$ 34.95	$ 27.28
Common stock repurchased and retired		95,107,000	47,200,000
October 2011 Stock Repurchase Program \| Additional Paid-in Capital
Share Repurchases [Line Items]
Repurchase of common stock, aggregate purchase price - Increase/(Decrease) In Equity		(24,500,000)	(15,400,000)
October 2011 Stock Repurchase Program \| Retained Earnings
Share Repurchases [Line Items]
Repurchase of common stock, aggregate purchase price - Increase/(Decrease) In Equity		(70,600,000)	(31,800,000)
April 2014 Stock Repurchase Program
Share Repurchases [Line Items]
Repurchase of common stock, common stock authorized							300,000,000
Common stock repurchased and retired (shares)	600,000
Common stock repurchased (in dollars per share)	$ 50.93
Common stock repurchased and retired	28,200,000
Authorized stock repurchase amount over next twelve months							100,000,000
Accelerated share repurchase agreement amount						70,000,000
Accelerated share repurchase amount					70,000,000
Accelerated share repurchase (in shares)				400,000	1,000,000			1,400,000
Accelerated share repurchases price per share (in dollars per share)				$ 51.46
Remaining authorized repurchase amount	201,800,000
April 2014 Stock Repurchase Program \| Subsequent Event
Share Repurchases [Line Items]
Common stock repurchased and retired									1,800,000
Additional authorized repurchase amount									$ 100,000,000