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BUSINESS SEGMENTS Revenue by Economic Factors (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Jun. 28, 2019 | Jun. 29, 2018 | Jun. 30, 2017
Segment Reporting Information [Line Items] |  |  |
Revenue | $ 6,801 | $ 6,168 | $ 5,897
Electronic Systems |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 2,583 | 2,365 | 2,245
Space and Intelligence Systems |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 2,057 | 1,913 | 1,904
United States |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 6,530 | 5,854 | 5,637
United States | Electronic Systems |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 2,095 | 1,890 | 1,769
United States | Space and Intelligence Systems |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 2,003 | 1,861 | 1,821
International |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 271 | 314 | 260
International | Electronic Systems |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 488 | 475 | 476
International | Space and Intelligence Systems |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 54 | 52 | 83
Fixed-price | Electronic Systems |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 2,092 | 1,900 | 1,833
Fixed-price | Space and Intelligence Systems |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 748 | 544 | 448
Cost-reimbursable | Electronic Systems |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 491 | 465 | 412
Cost-reimbursable | Space and Intelligence Systems |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 1,309 | 1,369 | 1,456
Prime contractor | Electronic Systems |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 1,671 | 1,670 | 1,653
Prime contractor | Space and Intelligence Systems |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 1,409 | 1,384 | 1,369
Subcontractor | Electronic Systems |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 912 | 695 | 592
Subcontractor | Space and Intelligence Systems |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | $ 648 | $ 529 | $ 535

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