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Immaterial Corrections (Details) (USD $)
In Millions, unless otherwise specified
 3 Months Ended
Mar. 31, 2012
Mar. 31, 2011
Consolidated Condensed Income Statements [Abstract]    
Costs of sales $ 404 $ 365
Gross profit 173 168
General and administrative expenses 53 45
Operating income (loss) 37 (10)
Income from continuing operations before income tax expense 35 (35)
Income (loss) from continuing operations 10 (22)
Less: Income from discontinued operations (7) 143
Net income 3 121
As Previously Reported with Reclassification for Discontinued Operations [Member]
    
Consolidated Condensed Income Statements [Abstract]    
Costs of sales   364
Gross profit   169
General and administrative expenses   48
Operating income (loss)   (12)
Income from continuing operations before income tax expense   (37)
Income (loss) from continuing operations   (23)
Less: Income from discontinued operations   147
Net income   124
Adjustments [Member]
    
Consolidated Condensed Income Statements [Abstract]    
Costs of sales   1
Gross profit   (1)
General and administrative expenses   (3)
Operating income (loss)   2
Income from continuing operations before income tax expense   2
Income (loss) from continuing operations   1
Less: Income from discontinued operations   (4) [1]
Net income   (3)
As Adjusted and with Reclassification for Discontinued Operations [Member]
    
Consolidated Condensed Income Statements [Abstract]    
Costs of sales   365
Gross profit   168
General and administrative expenses   45
Operating income (loss)   (10)
Income from continuing operations before income tax expense   (35)
Income (loss) from continuing operations   (22)
Less: Income from discontinued operations   143
Net income   $ 121
[1] Shares issued and outstanding include unvested restricted common stock of 0.2 at March 31, 2012 and 0.5 at December 31, 2011.