| **Goodwill and Intangible Assets - Schedule of Intangible Assets by Type (Details) - USD ($) $ in Millions** | Dec. 31, 2016 | Dec. 31, 2015 |
|--------------------------------------------------------------------------------------------------------------|---------------|---------------|
| **Finite-Lived Intangible Assets [Line Items]**                                                              |          |          |
| Gross Carrying Amount                                                                                        | $ 708         | $ 1,243       |
| Less: Accumulated Amortization                                                                               | 390           | 660           |
| Net                                                                                                          | 318           | 583           |
| Technology                                                                                                   |          |          |
| **Finite-Lived Intangible Assets [Line Items]**                                                              |          |          |
| Gross Carrying Amount                                                                                        | 527           | 866           |
| Less: Accumulated Amortization                                                                               | 267           | 452           |
| Net                                                                                                          | 260           | 414           |
| Customer Relationships                                                                                       |          |          |
| **Finite-Lived Intangible Assets [Line Items]**                                                              |          |          |
| Gross Carrying Amount                                                                                        | 74            | 251           |
| Less: Accumulated Amortization                                                                               | 31            | 106           |
| Net                                                                                                          | 43            | 145           |
| Trade names                                                                                                  |          |          |
| **Finite-Lived Intangible Assets [Line Items]**                                                              |          |          |
| Gross Carrying Amount                                                                                        | 90            | 108           |
| Less: Accumulated Amortization                                                                               | 79            | 89            |
| Net                                                                                                          | 11            | 19            |
| Other                                                                                                        |          |          |
| **Finite-Lived Intangible Assets [Line Items]**                                                              |          |          |
| Gross Carrying Amount                                                                                        | 17            | 18            |
| Less: Accumulated Amortization                                                                               | 13            | 13            |
| Net                                                                                                          | $ 4           | $ 5           |

| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275
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| X                                                                                                                                                                                                                                                                                                                                                                                                                            |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - 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.
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275
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| X                                                                                                                                                                                         |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
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| X                                                                                                                                                                               |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
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| X                                                                                                                                                                    |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------|
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| X                                                                                                                                                                               |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
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