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Earnings Per Share (Computation Of Basic And Diluted Earnings Per Share) (Detail) (USD $)
In Millions, except Per Share data, unless otherwise specified
 3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Earnings Per Share [Abstract]    
Net income (loss) for basic and diluted EPS $ 4 $ (46)
Weighted Average Number of Shares Outstanding, Basic 106.6 107.7
Options, warrants and non-vested stock 2.0 [1],[2] 0 [1],[2]
Convertible debt 0 [3],[4] 0 [3],[4]
Diluted weighted average shares outstanding 108.6 107.7
Basic (US$ per share) $ 0.03 $ (0.43)
Diluted (US$ per share) $ 0.03 $ (0.43)
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]    
Anti-dilutive shares   3.4
Options [Member]
    
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]    
Anti-dilutive shares   1.5
Warrants [Member]
    
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]    
Anti-dilutive shares   4.7
Convertible Debt Securities [Member]
    
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]    
Anti-dilutive shares 4.0 4.7
[1] For the three months ended March 31, 2014, the number of anti-dilutive securities which were excluded from the computation of diluted earnings per share was not significant.
[2] As the Company incurred a net loss for the three months ended March 31, 2013, 1.5 million outstanding options, 4.7 million warrants and 3.4 million non-vested stock awards have an anti-dilutive effect and therefore are excluded from the computation of diluted weighted average shares outstanding.
[3] For the three months ended March 31, 2014, 4.0 million issuable shares underlying the 3½% convertible notes due 2014 have an anti-dilutive effect and therefore are excluded from the computation of diluted weighted average shares outstanding.
[4] For the three months ended March 31, 2013, 4.7 million issuable shares underlying the 3½% convertible notes due 2014 have an anti-dilutive effect and therefore are excluded from the computation of diluted weighted average shares outstanding.