| **Discontinued Operations and Divestitures Textual (Details) - USD ($) $ / shares in Units, $ in Millions**                       |        |        | 12 Months Ended |
|-----------------------------------------------------------------------------------------------------------------------------------|--------|--------|-----------------|
||
| **Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]** |   |   |            |   |   |
| Adjustment to loss on sales of business, net                                                                                      |   |   | $ 20            | $ 0 | $ 0 |
| Earnings per share, diluted, after tax (in dollars per share)                                                                     |   |   | $ 2.59          | $ 3.11 | $ 4.95 |
| Liabilities of discontinued operations                                                                                            |   |   | $ 30            | $ 28 |   |
| Discontinued Operations, Disposed of by Means Other than Sale                                                                     |   |   |            |   |   |
| **Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]** |   |   |            |   |   |
| Liabilities of discontinued operations                                                                                            |   |   | 57              |   |   |
| Discontinued Operations, Disposed of by Means Other than Sale | CIS                                                               |   |   |            |   |   |
| **Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]** |   |   |            |   |   |
| Asset sale agreement                                                                                                              | $ 35   |   |            |   |   |
| Asset sale agreement cash                                                                                                         | 28     |   |            |   |   |
| Asset sale agreement promissory note                                                                                              | $ 7    |   |            |   |   |
| Adjustment to loss on sales of business, net                                                                                      |   |   |            |   | $ (3) |
| Gain (loss) on disposal of discontinued operation, net of tax                                                                     |   |   |            |   | 2 |
| Discontinued Operations, Disposed of by Means Other than Sale | Broadcast Communications                                          |   |   |            |   |   |
| **Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]** |   |   |            |   |   |
| Asset sale agreement                                                                                                              |   | $ 225  |            |   |   |
| Asset sale agreement cash                                                                                                         |   | 160    |            |   |   |
| Asset sale agreement promissory note                                                                                              |   | 15     |            |   |   |
| Asset sale agreement earnout                                                                                                      |   | $ 50   |            |   |   |
| Adjustment to loss on sales of business, net                                                                                      |   |   | (24)            |   | (18) |
| Gain (loss) on disposal of discontinued operation, net of tax                                                                     |   |   | $ (21)          |   | $ 7 |
| Earnings per share, diluted, after tax (in dollars per share)                                                                     |   |   | $ 0.16          |   |   |
| Liabilities of discontinued operations                                                                                            |   |   | $ 30            |   |   |

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| - Definition
Amount before tax of gain (loss) not previously recognized resulting from the disposal of a discontinued operation.
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| - Definition
Amount after tax of gain (loss) not previously recognized resulting from the disposal of a discontinued operation.
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|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.
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| - Definition
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.
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|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount classified as liabilities attributable to disposal group held for sale or disposed of, expected to be disposed of within one year or the normal operating cycle, if longer.
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