Equity (Narrative) (Details) (Convertible Debt [Member], 4.0% Convertible Notes [Member], USD $) In Millions, except Share data in Thousands, unless otherwise specified	1 Months Ended	9 Months Ended
Jun. 30, 2014	Sep. 30, 2014
Convertible Debt [Member] \| 4.0% Convertible Notes [Member]
Debt Conversion [Line Items]
Debt instrument, convertible, shares reissued from treasury	4,200	4,204
Share reissuances, treasury stock, value	$ 66.6

Equity impact of the value of treasury stock (units) reissued during the period, excluding reissuance of shares (units) held in treasury used to satisfy equity-based compensation obligations exercised by the holders of such rights. Upon reissuance of shares (units) from treasury, either the common or preferred stock (unit) reissued is 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 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 30

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655

Name:	us-gaap_StockIssuedDuringPeriodValueTreasuryStockReissued
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration