| **Summary of Significant Accounting Policies (Details) (USD $)In Millions, except Per Share data, unless otherwise specified** | 12 Months Ended | 3 Months Ended | 12 Months Ended |        | 12 Months Ended |
|--------------------------------------------------------------------------------------------------------------------------------|-----------------|----------------|-----------------|--------|-----------------|
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| Number Of Segments                                                                                                             | 4               |           |            |   |            |   |   |   |   |   |   |   |   |   |   |   |
| Advertising Expense                                                                                                            | $ 31            | $ 27           | $ 15            |   |            |   |   |   |   |   |   |   |   |   |   |   |
| Valuation Allowance, Deferred Tax Asset, Change in Amount                                                                      | (1,500)         |           |            | 61     |            |   |   |   |   | 42 |   |   |   |   |   |   |
| Earnings Per Share, Diluted For VAT tax adjustment                                                                             |            |           |            |   |            |   |   |   |   | $ 0.58 |   |   |   |   |   |   |
| Foreign Currency Transaction Gain (Loss), before Tax                                                                           | (1)             | 7              | 36              |   |            |   |   |   |   |   |   |   |   |   |   |   |
| **Prior Period Adjustment [Abstract]**                                                                                         |            |           |            |   |            |   |   |   |   |   |   |   |   |   |   |   |
| Quantifying Misstatement in Current Year Financial Statements, Amount                                                          |            |           |            |   |            |   |   |   |   |   | 5 | (9) | (10) | (10) | 3 | 2 |
| Restatement of Prior Year Income, Net of Tax                                                                                   |            |           |            |   | $ (10)          | $ 29 |   |   |   |   |   |   |   |   |   |   |
| **Risks and Uncertainties [Abstract]**                                                                                         |            |           |            |   |            |   |   |   |   |   |   |   |   |   |   |   |
| Concentration Risk Number of Customers                                                                                         |            |           |            |   |            |   | 1 |   |   |   |   |   |   |   |   |   |
| Concentration Risk Number Of Employees                                                                                         |            |           |            |   |            |   |   | 6,000 | 450 |   |   |   |   |   |   |   |
| Concentration Risk, Percentage                                                                                                 |            |           |            |   |            |   |   | 55.00% | 5.00% |   |   |   |   |   |   |   |

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Earnings Per Share, Diluted For VAT tax adjustment
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| - Definition
Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line.
+ References
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|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.
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|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The aggregate foreign currency transaction gain (loss) (both realized and unrealized) included in determining net income for the reporting period. Excludes foreign currency transactions designated as hedges of net investment in a foreign entity and intercompany foreign currency transactions that are of a long-term nature, when the entities to the transaction are consolidated, combined, or accounted for by the equity method in the reporting enterprise's financial statements. For certain enterprises, primarily banks, that are dealers in foreign exchange, foreign currency transaction gains (losses) may be disclosed as dealer gains (losses).
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| - Definition
Amount of each individual error being corrected in the correcting adjustment.
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|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Resulting effect of restatement to correct an error, after tax effects, on the net income of prior periods for the year in which any adjustments are first made. In statements containing more than one period, discloses the effects for each period.
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|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The amount of the change in the period in the valuation allowance for a specified deferred tax asset.
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