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Tangible Equity Units (Details) - USD ($)
$ / shares in Units, $ in Millions
 12 Months Ended
Sep. 17, 2018
Dec. 31, 2021
Dec. 31, 2020
Equity [Abstract]      
Tangible equity units issued 16,500,000    
Tangible equity units proceeds $ 800    
Price for basic share (in dollars per share)   $ 0.330911 $ 0.313400