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Immaterial Corrections (Details) (USD $) In Millions, except Per Share data, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009
Consolidated Income Statements [Abstract] |  |  |
General and administrative expenses | $ (168) | $ (176) | $ (201)
Operating loss | (247) | (184) | (121)
Loss from continuing operations before income tax expense (benefit) | (318) | (276) | (208)
Loss from continuing operations | (578) | (132) | (111)
Income tax expense | (260) | 144 | 97
Income from discontinued operations, including tax expense of $237, $330 and $275, respectively | 448 | 807 | 740
Net (loss) income | (130) | 804 | 629
Earnings Per Share: |  |  |
Continuing operations | $ (6.23) | $ (1.44) | $ (1.21)
Income from discontinued operations | $ 4.83 | $ 10.19 | $ 8.10
Net income | $ 1.40 | $ 8.75 | $ 6.89
As Previously Reported with Reclassification for Discontinued Operations [Member] |  |  |
Consolidated Income Statements [Abstract] |  |  |
General and administrative expenses |  | (179) | (195)
Operating loss |  | (187) | (115)
Loss from continuing operations before income tax expense (benefit) |  | (279) | (202)
Loss from continuing operations |  | (135) | (104)
Income tax expense |  |  | 98
Income from discontinued operations, including tax expense of $237, $330 and $275, respectively |  | 933 | 748
Net (loss) income |  | 798 | 644
Earnings Per Share: |  |  |
Continuing operations |  | $ (11.48) | $ (1.14)
Income from discontinued operations |  | $ 10.16 | $ 8.19
Net income |  | $ 8.68 | $ 7.05
Adjustments [Member] |  |  |
Consolidated Income Statements [Abstract] |  |  |
General and administrative expenses |  | 3 | (6)
Operating loss |  | 3 | (6)
Loss from continuing operations before income tax expense (benefit) |  | 3 | (6)
Loss from continuing operations |  | 3 | (7)
Income tax expense |  |  | (1)
Income from discontinued operations, including tax expense of $237, $330 and $275, respectively |  | 3 | (8)
Net (loss) income |  | 6 | (15)
Earnings Per Share: |  |  |
Continuing operations |  | $ 0.04 | $ (0.07)
Income from discontinued operations |  | $ 0.03 | $ (0.09)
Net income |  | $ 0.07 | $ (0.16)
As Adjusted and with Reclassification for Discontinued Operations [Member] |  |  |
Consolidated Income Statements [Abstract] |  |  |
General and administrative expenses |  | (176) | (201)
Operating loss |  | (184) | (121)
Loss from continuing operations before income tax expense (benefit) |  | (276) | (208)
Loss from continuing operations |  | (132) | (111)
Income tax expense |  |  | 97
Income from discontinued operations, including tax expense of $237, $330 and $275, respectively |  | 936 | 740
Net (loss) income |  | $ 804 | $ 629
Earnings Per Share: |  |  |
Continuing operations |  | $ (1.44) | $ (1.21)
Income from discontinued operations |  | $ 10.19 | $ 8.1
Net income |  | $ 8.75 | $ 6.89

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