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Goodwill and Acquired Intangibles - Changes in the Carrying Amount of Goodwill by Segment (Detail) - USD ($) $ in Millions |  | 12 Months Ended
--- | --- | ---
Nov. 18, 2019 | Dec. 31, 2019 | Dec. 31, 2018
Goodwill [Roll Forward] |  |  |
Goodwill, beginning balance |  | $ 10,769 | $ 10,807
Distributed Energy Solutions divestiture |  | (175) |
Other |  | 10 | (38)
Goodwill, ending balance |  | 10,604 | 10,769
Aeronautics |  |  |
Goodwill [Roll Forward] |  |  |
Goodwill, beginning balance |  | 171 | 171
Distributed Energy Solutions divestiture |  | 0 |
Other |  | 0 | 0
Goodwill, ending balance |  | 171 | 171
MFC |  |  |
Goodwill [Roll Forward] |  |  |
Goodwill, beginning balance |  | 2,262 | 2,265
Distributed Energy Solutions divestiture | $ (175) | (175) |
Other |  | 2 | (3)
Goodwill, ending balance |  | 2,089 | 2,262
RMS |  |  |
Goodwill [Roll Forward] |  |  |
Goodwill, beginning balance |  | 6,751 | 6,784
Distributed Energy Solutions divestiture |  | 0 |
Other |  | 7 | (33)
Goodwill, ending balance |  | 6,758 | 6,751
Space |  |  |
Goodwill [Roll Forward] |  |  |
Goodwill, beginning balance |  | 1,585 | 1,587
Distributed Energy Solutions divestiture |  | 0 |
Other |  | 1 | (2)
Goodwill, ending balance |  | $ 1,586 | $ 1,585

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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266 + Details
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- Definition Amount of increase (decrease), classified as other, of an asset representing the future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267 + Details
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- Definition Amount of divestiture of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267 + Details
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