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Accounts Receivable (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Accounts Receivable Details [Abstract] |  |  |
Allowance for doubtful accounts | $ 17,000,000 | $ 4,000,000 |
Allowance for doubtful accounts - receivables not expected to be collected in one year | 51,000,000 | 35,000,000 |
Receivables Securitization Facility [Abstract] |  |  |
Total capacity to transfer undivided interests to investors under the receivables securitization facility | $ 800,000,000 |  |
Receivables securitization facility maturity date | 2022-07 |  |
Receivables securitization facility duration | 3 years |  |
Value of the outstanding undivided interest held by investors under the receivables securitization facility | $ 0 | 400,000,000 |
Accounts receivable supporting the undivided interest held by investors | 1,200,000,000 | 1,300,000,000 |
Cost of the receivables securitization facility - interest expense | $ 7,000,000 | $ 14,000,000 | $ 15,000,000

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- Definition The value of the accounts receivable that supported the value of the undivided interest held by investors. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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- References No definition available. + Details
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- Definition Duration of the receivables securitization facility,in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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Balance Type: | na
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- Definition Interest expense associated with maintaining the receivables securitization facility. + References No definition available. + Details
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- Definition Maturity date of the receivables securitization facility, in Year Month format. + References No definition available. + Details
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- Definition Total capacity to transfer undivided interest to investors under receivables securitization facility. + References No definition available. + Details
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- Definition Value of the outstanding undivided interest held by investors under the receivables securitization facility. + References No definition available. + Details
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- References No definition available. + Details
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- Definition Amount of allowance for credit loss on accounts receivable, classified as current. + 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(4) -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 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=121611835&loc=d3e5074-111524 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121599878&loc=SL82895884-210446 + Details
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- Definition Amount of allowance for credit loss on accounts receivable, classified as noncurrent. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=121611835&loc=d3e5074-111524 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121599878&loc=SL82895884-210446 Reference 3: 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(4)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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