Share-Based Compensation Plans Performance Share Awards Narrative (Details) (Performance-based Awards [Member]) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2013 Minimum [Member]	Dec. 31, 2013 Maximum [Member]	Dec. 31, 2013 2010 Leadership Performance Plan [Member]	Dec. 31, 2013 Other Performance Plans [Member]	Dec. 31, 2012 Other Performance Plans [Member]	Dec. 31, 2012 2009 Leadership Performance Plan [Member]	Dec. 31, 2011 2008 Leadership Performance Plan [Member]	Dec. 31, 2011 2006 Performance Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting conditions period	1 year	5 years
Shares issued percent	0.00%	200.00%
Shares issued			1.1	0.2	0.9	1.4	1.2	0.3

Number of shares (or other type of equity) issued during the period as a result of any equity-based compensation plan other than an employee stock ownership plan (ESOP), net of any shares forfeited. Shares issued could result from the issuance of restricted stock, the exercise of stock options, stock issued under employee stock purchase plans, and/or other employee benefit plans.

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 SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 29, 30

-Article 5

Name:	us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration