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Acquisitions and Divestitures, Divestitures, Goodwill and Intangible Assets - Fair Value of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Millions | Jul. 01, 2018 | [1] | Apr. 03, 2018 | Apr. 01, 2018 | [2] | Dec. 31, 2017 | [2]
--- | --- | --- | --- | --- | --- | --- | ---
Business Acquisition [Line Items] |  |  |  |
Goodwill | $ 19,738 |  | $ 11,955 | $ 11,914
CSRA |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Cash and equivalents |  | $ 45 |  |
Accounts receivable |  | 156 |  |
Unbilled receivables |  | 807 |  |
Other current assets |  | 190 |  |
Property, plant and equipment, net |  | 685 |  |
Intangible assets, net |  | 2,069 |  |
Goodwill |  | 7,807 |  |
Other noncurrent assets |  | 19 |  |
Total assets |  | 11,778 |  |
Account payable |  | (135) |  |
Customer advances and deposits |  | (151) |  |
Current capital lease obligation |  | (51) |  |
Other current liabilities |  | (542) |  |
Noncurrent capital lease obligation |  | (207) |  |
Noncurrent deferred tax liability |  | (421) |  |
Other noncurrent liabilities |  | (522) |  |
Total liabilities |  | (2,029) |  |
Net assets acquired |  | $ 9,749 |  |
[1] | Goodwill in the Information Technology and Mission Systems reporting units is net of $632 and $1.3 billion of accumulated impairment losses, respectively.
[2] | Goodwill in the Information Systems and Technology reporting unit is net of $1.9 billion of accumulated impairment losses.

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