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v3.19.3.a.u2

Accounts Receivable (Details) - USD ($) $ in Millions | Dec. 31, 2019 | Dec. 31, 2018 | Jan. 01, 2018
--- | --- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Accounts receivable | $ 938 | $ 927 | $ 667
Unbilled |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Accounts receivable | 308 | 346 |
Trade & Other |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Accounts receivable | 630 | 581 |
Operating Segments | Government Solutions |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Accounts receivable | 565 | 600 |
Operating Segments | Government Solutions | Unbilled |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Accounts receivable | 184 | 266 |
Operating Segments | Government Solutions | Trade & Other |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Accounts receivable | 381 | 334 |
Operating Segments | Technology Solutions |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Accounts receivable | 62 | 73 |
Operating Segments | Technology Solutions | Unbilled |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Accounts receivable | 6 | 11 |
Operating Segments | Technology Solutions | Trade & Other |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Accounts receivable | 56 | 62 |
Operating Segments | Energy Solutions |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Accounts receivable | 310 | 254 |
Operating Segments | Energy Solutions | Unbilled |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Accounts receivable | 118 | 69 |
Operating Segments | Energy Solutions | Trade & Other |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Accounts receivable | 192 | 185 |
Subtotal |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Accounts receivable | 937 | 927 |
Subtotal | Unbilled |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Accounts receivable | 308 | 346 |
Subtotal | Trade & Other |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Accounts receivable | 629 | 581 |
Non-strategic Business |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Accounts receivable | 1 | 0 |
Non-strategic Business | Unbilled |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Accounts receivable | 0 | 0 |
Non-strategic Business | Trade & Other |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Accounts receivable | $ 1 | $ 0 |

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