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Changes in Estimates (Details) - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Oct. 01, 2021 | Oct. 02, 2020 | Oct. 01, 2021 | Oct. 02, 2020
Change in Accounting Estimate [Line Items] |  |  |  |
Revenue recognized from performance obligations satisfied in prior periods | $ 102 | $ 121 | $ 317 | $ 359
Contracts Accounted for under Percentage of Completion |  |  |  |
Change in Accounting Estimate [Line Items] |  |  |  |
Net EAC adjustments, before income taxes | 85 | 99 | 247 | 300
Net EAC adjustments, net of income taxes | $ 64 | $ 74 | $ 186 | $ 225
Net EAC adjustments, net of income taxes, per diluted common share (in dollars per share) | $ 0.32 | $ 0.34 | $ 0.91 | $ 1.03

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