XML 126 R33.htm IDEA: XBRL DOCUMENT v2.4.0.8
Summary of Significant Accounting Policies Impact of Accounting Policy Change (Narrative) (Details) (Impact of change in accounting principle [Member], USD $)
In Millions, except Per Share data, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Jan. 02, 2012
Impact of change in accounting principle [Member]
         
Change in Accounting Principle [Line Items]          
Change in accounting principle effect of change on basic earnings per share from continuing operations $ 0.01 $ (0.01) $ 0.02 $ (0.01)  
Change in Accounting Principle, Effect of Change on Diluted Earnings Per Share from Continuing Operations $ 0.01 $ (0.01) $ 0.02 $ (0.01)  
Change in Accounting Principle, Cumulative Effect of Change on Inventory         $ 143
Change in Accounting Principle, Cumulative Effect of Change on Equity         $ 120