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Sales and Other Operating Revenue - Receivables and Contract Liabilities (Details) - USD ($) | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2020 | Sep. 30, 2020 | Sep. 30, 2020 | Dec. 31, 2019
Accounts Receivable, Net |  |  | $ 1,338,000,000 | $ 2,372,000,000
Revenue, Performance Obligation, Description of Timing |  | We typically receive payment within 30 days or less (depending on the terms of the invoice) once delivery is made. |  |
Contract with Customer, Timing of Satisfaction of Performance Obligation and Payment |  | Payments are received in installments over the construction period. |  |
Revenue, Performance Obligation, Description of Payment Terms |  | The payments are not directly related to our performance under the contract and are recorded as deferred revenue to be recognized as revenue when the customer can utilize and benefit from their right to use the license. |  |
Contract Liabilities from Contracts with Customers | $ 88,000,000 | $ 88,000,000 | 88,000,000 | $ 80,000,000
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Explanation |  | We expect to recognize the contract liabilities as of September 30, 2020, as revenue during 2021 and 2022. |  |
Contract with Customer, Liability, Revenue Recognized | 0 | $ 0 |  |
Contract with Customer, Liability [Abstract] |  |  |  |
Contract with Customer, Liability Beginning Balance |  | 80,000,000 |  |
Contractual payments received |  | 8,000,000 |  |
Contract with Customer, Liability Ending Balance | 88,000,000 | 88,000,000 |  |
Short-term Contract with Customer [Member] |  |  |  |
Contract Liabilities from Contracts with Customers | 47,000,000 | 47,000,000 | 47,000,000 |
Contract with Customer, Liability [Abstract] |  |  |  |
Contract with Customer, Liability Ending Balance | 47,000,000 | 47,000,000 |  |
Long-term Contract with Customer [Member] |  |  |  |
Contract Liabilities from Contracts with Customers | 41,000,000 | 41,000,000 | $ 41,000,000 |
Contract with Customer, Liability [Abstract] |  |  |  |
Contract with Customer, Liability Ending Balance | $ 41,000,000 | $ 41,000,000 |  |

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- Definition Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(3)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(5)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 + Details
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