| **Discontinued Operations - Schedule of Discontinued Operations (Details) (USD $)In Millions, unless otherwise specified**        | 3 Months Ended                                                                                                                                                       | 12 Months Ended                                         |
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| **Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]** |                                                                                                                                                                 |                                                    |   |   |   |   |   |   |   |   |   |
| Income (loss) from discontinued operations, net of tax                                                                            | $ 0us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax                                                                                                              | $ 1us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | $ 1us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | $ 1us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | $ (1)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | $ (10)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | $ (21)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | $ (9)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | $ 3us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | $ (41)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | $ (71)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax |
| Discontinued Operations [Member]                                                                                                  |                                                                                                                                                                 |                                                    |   |   |   |   |   |   |   |   |   |
| **Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]** |                                                                                                                                                                 |                                                    |   |   |   |   |   |   |   |   |   |
| Disposal Group, Including Discontinued Operation, Revenue                                                                         | 0us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_SegmentDiscontinuedOperationsMember                      |                                                    |   |   | 73us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_SegmentDiscontinuedOperationsMember |   |   |   |   |   | 253us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_SegmentDiscontinuedOperationsMember |
| Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax                                              | 3us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_SegmentDiscontinuedOperationsMember |                                                    |   |   | (41)us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_SegmentDiscontinuedOperationsMember |   |   |   |   |   | (71)us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_SegmentDiscontinuedOperationsMember |
| Income (loss) from discontinued operations, net of tax                                                                            | 3us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_SegmentDiscontinuedOperationsMember                            |                                                    |   |   | (41)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_SegmentDiscontinuedOperationsMember |   |   |   |   |   | (71)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_SegmentDiscontinuedOperationsMember |
| Income tax benefit (expense)                                                                                                      | $ 0us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_SegmentDiscontinuedOperationsMember                 |                                                    |   |   | $ 0us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_SegmentDiscontinuedOperationsMember |   |   |   |   |   | $ 0us-gaap_DiscontinuedOperationTaxEffectOfDiscontinuedOperation/ us-gaap_StatementBusinessSegmentsAxis= us-gaap_SegmentDiscontinuedOperationsMember |

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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.
+ References
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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.
+ References
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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
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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