| **Discontinued Operations - Discontinued Operations (Details) (USD $)In Millions, unless otherwise specified** | 3 Months Ended | 12 Months Ended | 1 Months Ended | 12 Months Ended |
|----------------------------------------------------------------------------------------------------------------|----------------|-----------------|----------------|-----------------|
||
| **Statements of Operations for Discontinued Operations [Line Items]**                                          |           |            |           |            |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Proceeds from Divestiture of Businesses                                                                        |           | $ 19            |           |            |   |   |   |   | $ 33 |   |   | $ 16 |   |   |   |   | $ 16 |
| Asset Impairment Charges                                                                                       |           | 24              |           |            |   |   |   |   | 97 | 16 | 13 |   |   |   |   |   |   |
| Sales and revenues, net                                                                                        |           |            |           |            |   |   |   |   |   |   |   |   | 73 | 253 | 317 |   |   |
| Loss before income taxes                                                                                       |           |            |           |            |   |   |   |   |   |   |   |   | (41) | (71) | (115) |   |   |
| Income tax benefit                                                                                             |           |            |           |            |   |   |   |   |   |   |   |   | 0 | 0 | 41 |   |   |
| Loss from discontinued operations, net of tax                                                                  | (1)            | (10)            | (21)           | (9)             | (32) | 4 | (34) | (9) | (41) | (71) | (74) |   | (41) | (71) | (74) |   |   |
| Gain (Loss) on Disposition of Business                                                                         |           |            |           |            |   |   |   |   |   |   |   |   |   |   |   | $ 26 |   |
| Number of Dealcors                                                                                             |           |            |           |            |   |   |   |   | 2 | 2 | 4 |   |   |   |   |   |   |

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| - Definition
Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.
+ References
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|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Overall income (loss) from a disposal group that is classified as a component of the entity, before income tax, reported as a separate component of income before extraordinary items. Includes the following (before income tax): income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.
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|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Tax effect allocated to a disposal group that is classified as a component of the entity reported as a separate component of income before extraordinary items. Includes the tax effects of the following: income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.
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|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of sales or other form of revenues attributable to the disposal group, including a component of the entity (discontinued operation), during the reporting period.
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| - Definition
Gain (loss) from sale or disposal of an organization or integrated set of activities (for example, but not limited to, a partnership or corporation) engaged in providing a product or service in a commercial, industrial, or professional environment.
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|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of income (loss) from a disposal group, net of income tax before extraordinary items allocable to noncontrolling interests. Includes, net of tax, income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.
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| - Definition
The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period.
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