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Goodwill and Acquired Intangibles - Additional Information (Detail) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Nov. 06, 2015
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Amortization expense for acquired finite lived intangible assets | $ 296 | $ 312 | $ 284 |
Amortization of finite lived intangible assets in 2019 | 285 |  |  |
Amortization of finite lived intangible assets in 2020 | 263 |  |  |
Amortization of finite lived intangible assets in 2021 | 256 |  |  |
Amortization of finite lived intangible assets in 2022 | 253 |  |  |
Amortization of finite lived intangible assets in 2023 | 250 |  |  |
Amortization of finite lived intangible assets after 2023 | 1,300 |  |  |
Sikorsky Aircraft Corporation |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Customer contractual obligations acquired |  |  |  | $ 507
Performance obligation satisfied in previous period | $ 325 |  |  |
Minimum |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Acquired finite-lived intangible assets are amortized | 3 years |  |  |
Maximum |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Acquired finite-lived intangible assets are amortized | 20 years |  |  |
Customer programs | Minimum |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Acquired finite-lived intangible assets are amortized | 9 years |  |  |
Customer programs | Maximum |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Acquired finite-lived intangible assets are amortized | 20 years |  |  |
Customer relationships | Minimum |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Acquired finite-lived intangible assets are amortized | 4 years |  |  |
Customer relationships | Maximum |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Acquired finite-lived intangible assets are amortized | 10 years |  |  |
Other | Minimum |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Acquired finite-lived intangible assets are amortized | 3 years |  |  |
Other | Maximum |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |
Acquired finite-lived intangible assets are amortized | 10 years |  |  |

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- Definition Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Customer Contractual Obligations + References No definition available. + Details
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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 + Details
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