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

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

Name:	us-gaap_CommonStockDividendsPerShareDeclared
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

Subsequent Events (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended		0 Months Ended	1 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Oct. 10, 2014 Subsequent Event [Member]	Sep. 30, 2014 Entek [Member]	Oct. 31, 2014 Entek [Member] Subsequent Event [Member]	Oct. 13, 2014 Entek [Member] Subsequent Event [Member]
Subsequent Event [Line Items]
Investment In Affiliate Ownership Percentage Sold						49.60%		49.62%
Equity Method Investment, Purchase Price Agreement						$ 125	$ 125
Common Stock, Dividends, Per Share, Declared	$ 0.05	$ 0	$ 0.10	$ 0.08	$ 0.05