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Changes in Estimates (Details) - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Oct. 02, 2020 | Sep. 27, 2019 | Oct. 02, 2020 | Sep. 27, 2019
Change in Accounting Estimate [Line Items] |  |  |  |
Revenue recognized from performance obligations satisfied in prior periods | $ 121 | $ 73 | $ 359 | $ 116
Contracts Accounted for under Percentage of Completion |  |  |  |
Change in Accounting Estimate [Line Items] |  |  |  |
Net EAC adjustments, before income taxes | 99 | 62 | 300 | 80
Net EAC adjustments, net of income taxes | $ 74 | $ 46 | $ 225 | $ 59
Net EAC adjustments, net of income taxes, per diluted common share (in dollars per share) | $ 0.34 | $ 0.20 | $ 1.03 | $ 0.30

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