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Revenue from Contract with Customer (Tables) | 12 Months Ended
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Dec. 31, 2020
Revenue from Contract with Customer [Abstract] |
Contract Assets and Liabilities | The following summarizes information about our contract assets and liabilities:
| December 31,
(in millions) | 2020 | 2019
Information about contract assets: |  |
Contract assets |  |
Unbilled receivables | $ | 681 |  | $ | 851 |
Contract work in progress | 287 |  | 387 |
Contract assets | $ | 968 |  | $ | 1,238 |
Advance billings deducted from contract assets | $ | 310 |  | $ | 574 |
| Year Ended December 31,
| 2020 | 2019
Information about contract liabilities: |  |
Provision for anticipated losses on contracts included in contract liabilities | $ | 203 |  | $ | 371 |
Revenue recognized that was included in contract liabilities as of January 1 | 755 |  | 779 |

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- Definition Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130551-203045 + Details
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