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Severance and Restructuring Charges (Detail) - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 24, 2018 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Restructuring Cost and Reserve [Line Items] |  |  |  |
Severance charges |  | $ 96 | $ 0 | $ 80
RMS |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Severance and restructuring charges | $ 96 |  |  |
Severance and restructuring charges, net of tax | $ 76 |  |  |
Severance and restructuring charges (in dollars per share) | $ 0.26 |  |  |
Severance charges | $ 75 |  |  |
Aeronautics |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Severance charges |  |  |  | $ 80
Operations Consolidation |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Payments for restructuring |  | $ 33 |  |
Operations Consolidation | RMS |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Other restructuring costs | $ 21 |  |  |

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- Definition The charge against earnings in the period for known and estimated costs of termination benefits provided to current employees that are voluntarily and involuntarily terminated under a benefit arrangement associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, excluding costs or losses pertaining to an entity newly acquired in a business combination or a discontinued operation as defined by generally accepted accounting principles and costs associated with one-time termination benefits. + References No definition available. + Details
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