Weighted Average Shares Outstanding (Details) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Earnings Per Share (Textuals) [Abstract]
Excluded common stock equivalents	19	8
Weighted average shares outstanding
Weighted average shares outstanding - basic	1,341.2	1,406.7	1,509.3
Net effect of common stock equivalents	0	0	9.7
Weighted average shares outstanding - assuming dilution	1,341.2	1,406.7	1,519.0
Stock Options [Member]
Earnings Per Share (Textuals) [Abstract]
Excluded common stock equivalents	16	59	62

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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

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+ Details

- Definition

The sum of dilutive potential common shares or units used in the calculation of the diluted per-share or per-unit computation.

+ References+ Details

- Definition

The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

+ References+ Details

- Definition

Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

+ References

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-URI http://asc.fasb.org/extlink&oid=6528421

+ Details