| **Discontinued Operations and Divestitutures - Divestitures (Details) - Electronic Systems - Disposal Group, Disposed of by Sale, Not Discontinued Operations - Aerostructures - USD ($) $ in Millions** |        | 12 Months Ended |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------|-----------------|
||
| **Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]**                                                                        |   |            |   |
| Asset sale agreement cash                                                                                                                                                                                | $ 187  |            |   |
| Capital leased assets disposal group                                                                                                                                                                     | $ 23   |            |   |
| **Summarized financial information for our discontinued operations**                                                                                                                                     |   |            |   |
| Revenue from product sales and services                                                                                                                                                                  |   | $ 60            | $ 8 |
| Income before income taxes                                                                                                                                                                               |   | 5               | 0 |
| Net gain on sale of business                                                                                                                                                                             |   | 10              | 0 |
| Receivables                                                                                                                                                                                              |   | 0               | 7 |
| Inventories                                                                                                                                                                                              |   | 0               | 36 |
| Property, plant and equipment                                                                                                                                                                            |   | 0               | 65 |
| Goodwill                                                                                                                                                                                                 |   | 0               | 57 |
| Intangible assets                                                                                                                                                                                        |   | 0               | 25 |
| Other assets                                                                                                                                                                                             |   | 0               | 3 |
| Total assets                                                                                                                                                                                             |   | 0               | 193 |
| Accounts payable                                                                                                                                                                                         |   | 0               | 7 |
| Other liabilities                                                                                                                                                                                        |   | 0               | 5 |
| Net assets                                                                                                                                                                                               |   | $ 0             | $ 181 |

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Amount classified as assets attributable to disposal group held for sale or disposed of.
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Amount classified as accounts, notes and loans receivable attributable to disposal group held for sale or disposed of.
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Amount classified as accounts payable attributable to disposal group held for sale or disposed of.
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Amount classified as capital leased assets attributable to disposal group.
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Amount classified as goodwill attributable to disposal group held for sale or disposed of.
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| - Definition
Amount classified as intangible assets, excluding goodwill, attributable to disposal group held for sale or disposed of.
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| - Definition
Amount classified as inventory attributable to disposal group held for sale or disposed of.
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| - Definition
Amount of operating income (loss) attributable to disposal group, including, but not limited to, discontinued operation.
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| - Definition
Amount classified as other liabilities attributable to disposal group held for sale or disposed of.
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| - Definition
Amount classified as other assets attributable to disposal group held for sale or disposed of, expected to be disposed of after one year or the normal operating cycle, if longer.
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| - Definition
Amount classified as property, plant and equipment attributable to disposal group held for sale or disposed of.
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Amount of revenue attributable to disposal group, including, but not limited to, discontinued operation.
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Gain (loss) from sale or disposal of an organization or integrated set of activities (for example, but not limited to, a partnership or corporation) engaged in providing a product or service in a commercial, industrial, or professional environment.
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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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