Represents common stock price per share for purpose of the special dividend.

No definition available.

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- Definition

Represents the number of trading days used for value of common stock for purposes of special dividend based upon the average closing price.

+ References

No definition available.

+ Details

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- Definition

The percentage of outstanding common stock that was authorized for share repurchase by the board of directors, as measured at the time of the authorization.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

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

+ References

+ Details

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Data Type:	num:perShareItemType
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- Definition

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

+ References

+ Details

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- Definition

Amount of paid and unpaid common stock dividends declared with the form of settlement in cash, stock and payment-in-kind (PIK).

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 15

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585

+ Details

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Balance Type:	credit
Period Type:	duration

- Definition

Number of shares of common and preferred stock issued as dividends during the period. Excludes stock splits.

+ References

Reference 1: 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

+ Details

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- Details

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- Definition

Value of stock issued to shareholders as a dividend 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 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

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.29-31)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 29, 30, 31

-Article 5

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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- Definition

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

+ 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 by an entity's Board of Directors.

+ References

No definition available.

+ Details

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Stockholders' Equity Matters (Details) (USD $) In Thousands, except Share data, unless otherwise specified	0 Months Ended																	1 Months Ended	3 Months Ended		9 Months Ended
	Oct. 15, 2013	Sep. 30, 2013	Sep. 11, 2013	Jul. 15, 2013	Jun. 06, 2013	Apr. 15, 2013	Mar. 14, 2013	Jan. 17, 2013	Dec. 14, 2012	Nov. 21, 2012	Oct. 15, 2012	Oct. 11, 2012	Sep. 06, 2012	Jul. 13, 2012	Jun. 05, 2012	Apr. 13, 2012	Mar. 08, 2012	Nov. 21, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Stockholders' Equity Note
Share repurchases authorized amount																					$ 1,200,000
Remaining amount available under share repurchase program		66,035
Percentage of outstanding common stock authorized for repurchase		1.00%
Dividends declared (in dollars per share)			$ 0.2700		$ 0.2700		$ 0.2700		$ 0.2700			$ 4.0600	$ 0.2700		$ 0.2700		$ 0.2500		$ 0.2700	$ 0.2700	$ 0.8100	$ 0.7900
Dividends declared			51,625		51,597		51,460		51,296			700,000	46,473		46,336		42,791				156,693	135,642
Dividends paid ( in dollars per share)	$ 0.2700			$ 0.2700		$ 0.2700		$ 0.2700		$ 4.0600	$ 0.2700			$ 0.2700		$ 0.2500
Dividends paid	51,625			51,597		51,460		51,296			46,473			46,336		42,791		140,000			155,027	132,307
Number of trading days used for value of special dividend										3 days
Common stock value for special dividend (in dollars per share)										$ 32.87								$ 32.87
Common stock issued in special dividend										$ 560,000
Common stock issued in special dividend (in shares)										17,000,000