Summary of Significant Accounting Policies - Accounts Receivable and Allowance for Doubtful Receivables (Details) - USD ($) $ in Millions |
12 Months Ended | |
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Dec. 31, 2021 |
Dec. 31, 2020 |
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| Accounts Receivable, Allowance for Credit Loss [Roll Forward] | ||
| Charged to costs and expenses | $ 4 | |
| Balance at end of year | $ 4 | |
| Number of days in allowance used n the calculation (greater than) | 120 days | |
| Derivative Instruments and Hedging Activities | ||
| Derivative instruments | $ 0 | $ 0 |
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- Definition Threshold period for when accounts receivable, classified as noncurrent, is considered past due, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Excludes threshold period past due to write off as uncollectible. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of allowance for credit loss on accounts receivable. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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- Definition Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of expense (reversal of expense) for expected credit loss on accounts receivable. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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