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Revenue - Revenue by Contract Type (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Apr. 02, 2017 | Apr. 03, 2016
Revenue [Line Items] |  |
Reimbursement Revenue | $ 2,018 | $ 2,065
Revenues | 7,441 | 7,476
Aerospace |  |
Revenue [Line Items] |  |
Reimbursement Revenue | 0 | 0
Revenues | 2,074 | 1,781
Combat Systems |  |
Revenue [Line Items] |  |
Reimbursement Revenue | 207 | 216
Revenues | 1,287 | 1,245
Information Systems and Technology |  |
Revenue [Line Items] |  |
Reimbursement Revenue | 1,010 | 1,049
Revenues | 2,146 | 2,328
Marine Systems |  |
Revenue [Line Items] |  |
Reimbursement Revenue | 801 | 800
Revenues | 1,934 | 2,122
Fixed-price Contract |  |
Revenue [Line Items] |  |
Revenues | 5,035 | 5,063
Fixed-price Contract | Aerospace |  |
Revenue [Line Items] |  |
Revenues | 1,902 | 1,641
Fixed-price Contract | Combat Systems |  |
Revenue [Line Items] |  |
Revenues | 1,073 | 1,024
Fixed-price Contract | Information Systems and Technology |  |
Revenue [Line Items] |  |
Revenues | 930 | 1,077
Fixed-price Contract | Marine Systems |  |
Revenue [Line Items] |  |
Revenues | 1,130 | 1,321
Time-and-materials Contract |  |
Revenue [Line Items] |  |
Revenues | 388 | 348
Time-and-materials Contract | Aerospace |  |
Revenue [Line Items] |  |
Revenues | 172 | 140
Time-and-materials Contract | Combat Systems |  |
Revenue [Line Items] |  |
Revenues | 7 | 5
Time-and-materials Contract | Information Systems and Technology |  |
Revenue [Line Items] |  |
Revenues | 206 | 202
Time-and-materials Contract | Marine Systems |  |
Revenue [Line Items] |  |
Revenues | $ 3 | $ 1

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- Definition Repayment received or receivable for expenses incurred on behalf of a client or customer, other than those reimbursements received by landlords from tenants. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 45 -Section 45 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=68075638&loc=d3e60722-111653 + Details
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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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