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Goodwill and Other Intangible Assets - Narrative (Details) - USD ($) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Oct. 01, 2021 | Jul. 02, 2021 | Apr. 02, 2021 | Oct. 02, 2020 | Jul. 03, 2020 | Apr. 03, 2020 | Oct. 01, 2021 | Oct. 02, 2020
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Non-cash goodwill impairment charge |  |  |  |  |  |  | $ 62,000,000 | $ 369,000,000
Amortization expense for intangible assets | $ 156,000,000 |  |  | $ 179,000,000 |  |  | 476,000,000 | 546,000,000
Aviation Systems |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Non-cash goodwill impairment charge |  |  |  |  |  |  | 62,000,000 | 364,000,000
Commercial Aviation Solutions | COVID-19 |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Non-cash goodwill impairment charge |  |  |  | 0 | $ 54,000,000 | $ 296,000,000 |  |
Non-cash goodwill impairment charge attributable to noncontrolling interests |  |  |  | $ 0 | 8,000,000 | 28,000,000 |  |
CTS |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Non-cash goodwill impairment charge |  | $ 0 |  |  |  |  |  |
Non-cash impairment charge of asset group |  |  |  |  |  |  | 56,000,000 |
Non-cash impairment charge of intangible assets |  |  |  |  |  |  | 7,000,000 |
CTS | Aviation Systems |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Non-cash impairment charge of asset group | 145,000,000 |  |  |  |  |  |  |
Non-cash impairment charge of intangible assets | 63,000,000 |  |  |  |  |  |  |
Held-for-sale |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Goodwill assigned to disposal group | $ 11,000,000 |  |  |  |  |  | $ 11,000,000 |
CPS business | Held-for-sale | Aviation Systems |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Goodwill assigned to disposal group |  |  | $ 174,000,000 |  |  |  |  |
Non-cash goodwill impairment charge |  |  | $ 62,000,000 |  |  |  |  |
VSE disposal group | Held-for-sale |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Goodwill assigned to disposal group |  |  |  |  | $ 14,000,000 |  |  |
VSE disposal group | Held-for-sale | Aviation Systems |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Non-cash goodwill impairment charge |  |  |  |  |  |  |  | $ 14,000,000
Applied Kilovolts business | Disposed of by Sale | Space and Airborne Systems |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Goodwill assigned to disposal group |  |  |  |  |  | 6,000,000 |  |
Non-cash goodwill impairment charge |  |  |  |  |  | $ 5,000,000 |  |

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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=123570139&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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