Revenues from Contracts with Customers (Narrative) (Details) - USD ($) $ in Millions |
12 Months Ended | |
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Dec. 31, 2020 |
Dec. 31, 2019 |
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Revenue from Contract with Customer [Abstract] | ||
Allowance for cash discounts | $ 0 | $ 0 |
Contract with customer, liability | $ 301 | 362 |
Revenue, performance obligation, description of timing | three days | |
Receivables | $ 137 | $ 152 |
X | ||||||||||
- Definition Allowance For Sales Discounts, Goods No definition available.
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X | ||||||||||
- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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X | ||||||||||
- Definition The total amount due to the entity within one year of the balance sheet date (or one operating cycle, if longer) from outside sources, including trade accounts receivable, notes and loans receivable, as well as any other types of receivables, net of allowances established for the purpose of reducing such receivables to an amount that approximates their net realizable value. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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X | ||||||||||
- References No definition available.
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X | ||||||||||
- Definition Description of timing for satisfying performance obligation in contract with customer. Includes, but is not limited to, as services are rendered, and upon shipment, delivery or completion of service. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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