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OTHER - Lockheed Martin Ventures Fund (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended	9 Months Ended
	Sep. 26, 2021	Sep. 26, 2021	Dec. 31, 2020
Accounting Policies [Abstract]
Carrying amount of investments held in lockheed martin venture fund	$ 355	$ 355	$ 173
Realized gain reflected in other non-operating income	98	180
Realized gain recognized for changes in fair value, net of tax	$ 74	$ 135
Realized gain recognized for changes in fair value, net of tax (in dollars per share)	$ 0.27	$ 0.49

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Amount of realized gain (loss) from sale of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 321
-SubTopic 10
-Section 50
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