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Note 17 - Financial Instruments - Gain (Loss) on Embedded Derivatives (Details) - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2023 | Mar. 31, 2022
Change in fair value of the Preferred Stock and Convertible Notes embedded derivatives | [1] | $ 1 | $ 3
[1] | Refer to Note 17, "Financial Instruments".

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- Definition Net Increase or Decrease in the fair value of the embedded derivative or group of embedded derivatives included in earnings in the period. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 815 -SubTopic 15 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//815-15/tableOfContent + Details
Name: | us-gaap_EmbeddedDerivativeGainLossOnEmbeddedDerivativeNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration