| **Goodwill and Intangible Assets - Schedule of Intangible Assets by Type (Details) - USD ($) $ in Millions**                                                                                            | 6 Months Ended |     |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------|-----|
||
| **Schedule of Finite-Lived and Indefinite-Lived Intangible Assets by Major Class [Line Items]**                                                                                                         |           |     |   |
| Finite-Lived Intangible Assets, Gross                                                                                                                                                                   | $ 999          |     | $ 1,243 |
| Finite-Lived Intangible Assets, Accumulated Amortization                                                                                                                                                | 560            |     | 660 |
| Finite-Lived Intangible Assets, Net                                                                                                                                                                     | 439            |     | 583 |
| Customer Relationships and Trade Names                                                                                                                                                                  |           |     |   |
| **Schedule of Finite-Lived and Indefinite-Lived Intangible Assets by Major Class [Line Items]**                                                                                                         |           |     |   |
| Impairment of Intangible Assets, Finite-lived                                                                                                                                                           | 101            |     |   |
| Technology-Based Intangible Assets                                                                                                                                                                      |           |     |   |
| **Schedule of Finite-Lived and Indefinite-Lived Intangible Assets by Major Class [Line Items]**                                                                                                         |           |     |   |
| Finite-Lived Intangible Assets, Gross                                                                                                                                                                   | 793            |     | 866 |
| Finite-Lived Intangible Assets, Accumulated Amortization                                                                                                                                                | 426            |     | 452 |
| Finite-Lived Intangible Assets, Net                                                                                                                                                                     | 367            |     | 414 |
| Customer Relationships                                                                                                                                                                                  |           |     |   |
| **Schedule of Finite-Lived and Indefinite-Lived Intangible Assets by Major Class [Line Items]**                                                                                                         |           |     |   |
| Finite-Lived Intangible Assets, Gross                                                                                                                                                                   | 94             | [1] | 251 |
| Finite-Lived Intangible Assets, Accumulated Amortization                                                                                                                                                | 38             | [1] | 106 |
| Finite-Lived Intangible Assets, Net                                                                                                                                                                     | 56             | [1] | 145 |
| Trade Names                                                                                                                                                                                             |           |     |   |
| **Schedule of Finite-Lived and Indefinite-Lived Intangible Assets by Major Class [Line Items]**                                                                                                         |           |     |   |
| Finite-Lived Intangible Assets, Gross                                                                                                                                                                   | 96             |     | 108 |
| Finite-Lived Intangible Assets, Accumulated Amortization                                                                                                                                                | 83             |     | 89 |
| Finite-Lived Intangible Assets, Net                                                                                                                                                                     | 13             |     | 19 |
| Other Intangible Assets                                                                                                                                                                                 |           |     |   |
| **Schedule of Finite-Lived and Indefinite-Lived Intangible Assets by Major Class [Line Items]**                                                                                                         |           |     |   |
| Finite-Lived Intangible Assets, Gross                                                                                                                                                                   | 16             |     | 18 |
| Finite-Lived Intangible Assets, Accumulated Amortization                                                                                                                                                | 13             |     | 13 |
| Finite-Lived Intangible Assets, Net                                                                                                                                                                     | $ 3            |     | $ 5 |
|                                                                                                                                                                                                         |
| [1]During the first six months of 2016, we recorded impairments relating to various intangible assets totaling $101 million. See Note 3. "Impairment and Restructuring Charges" for further discussion. |

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The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of a finite-lived intangible asset to fair value.
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