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Acquisitions and Divestitures, Divestitures, Goodwill and Intangible Assets - Unaudited Pro Forma Information (Details) - CSRA - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended | 6 Months Ended
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Jul. 01, 2018 | Jul. 02, 2017 | Jul. 01, 2018 | Jul. 02, 2017
Business Acquisition [Line Items] |  |  |  |
Revenue | $ 9,186 | $ 8,853 | $ 18,023 | $ 17,497
Net earnings | $ 804 | $ 756 | $ 1,534 | $ 1,489
Diluted earnings per share | $ 2.68 | $ 2.48 | $ 5.10 | $ 4.86

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- Definition The pro forma diluted net income per share for a period as if the business combination or combinations had been completed at the beginning of a period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(2)-(3) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
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