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Goodwill and Acquired Intangibles - Changes in the Carrying Amount of Goodwill by Segment (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
Goodwill [Roll Forward] |  |
Goodwill, beginning balance | $ 10,806 | $ 10,604
Acquisitions | 17 | 189
Other | (10) | 13
Goodwill, ending balance | 10,813 | 10,806
Aeronautics |  |
Goodwill [Roll Forward] |  |
Goodwill, beginning balance | 187 | 171
Acquisitions | 0 | 16
Other | 0 | 0
Goodwill, ending balance | 187 | 187
MFC |  |
Goodwill [Roll Forward] |  |
Goodwill, beginning balance | 2,091 | 2,089
Acquisitions | 0 | 0
Other | (1) | 2
Goodwill, ending balance | 2,090 | 2,091
RMS |  |
Goodwill [Roll Forward] |  |
Goodwill, beginning balance | 6,768 | 6,758
Acquisitions | 0 | 0
Other | (9) | 10
Goodwill, ending balance | 6,759 | 6,768
Space Systems |  |
Goodwill [Roll Forward] |  |
Goodwill, beginning balance | 1,760 | 1,586
Acquisitions | 17 | 173
Other | 0 | 1
Goodwill, ending balance | $ 1,777 | $ 1,760

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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://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(10)(1)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 2: 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=120320667&loc=SL49117168-202975 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=84165509&loc=d3e56426-112766 Reference 4: 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 in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. + 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 (b) -URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267 + Details
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