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Fair Value Measurements (Details) - USD ($)
$ / shares in Units, $ in Millions
Mar. 31, 2023
Jun. 30, 2022
Mar. 31, 2022
Apr. 22, 2021
7.750% Senior Secured Notes due 2026        
Debt Instrument [Line Items]        
Interest rate (as a percent)     7.75% 7.75%
Estimated fair value of loan $ 56 $ 140    
Stock price (in dollars per share) $ 1.74      
4.50% Convertible Senior Notes due 2026        
Debt Instrument [Line Items]        
Interest rate (as a percent) 4.50%      
Estimated fair value of loan $ 6 25    
Initial conversion price (in dollars per share) $ 61.16      
Second Lien Facility        
Debt Instrument [Line Items]        
Estimated fair value of loan $ 30 $ 76