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Note 6 - Earnings per Common Share (Details) - Potential Common Shares Excluded from the Calculation of Diluted Earnings Per Common Share In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Potential Common Shares Excluded from the Calculation of Diluted Earnings Per Common Share [Abstract]
Stock options and other dilutive securities excluded from the calculation of diluted earnings per common share	38	42	43	42

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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