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Convertible Notes and Borrowings - Additional Information (Details)
€ in Millions, $ in Millions
 1 Months Ended 12 Months Ended
Apr. 03, 2018
EUR (€)
Dec. 29, 2017
USD ($)
shares
Dec. 15, 2017
USD ($)
shares
Apr. 01, 2016
USD ($)
Jan. 31, 2018
USD ($)
shares
Dec. 31, 2020
EUR (€)
Jul. 13, 2020
shares
Oct. 17, 2019
shares
Oct. 04, 2019
shares
Jan. 01, 2018
shares
Disclosure Of Convertible Notes And Borrowings [Abstract]                    
Principal amount of convertible notes       $ 1,000            
Convertible notes due       2021            
Convertible note interest rate       5.00%            
Increase in payment-in-kind interest rate basis       1.00%            
Discount on conversion price per share       20.00%            
Date of involuntary conversion event       12 months            
Increase in discount rate       2.50%            
Principal amount annualized return       10.00%            
Transaction costs expensed in finance costs       $ 20            
Convertible notes exchanged principal amount   $ 110 $ 301   $ 628          
Convertible notes accrued interest   $ 10 $ 27              
Ordinary shares issued | shares   1,754,960 4,800,000   9,431,960   1,084,043 1,991,627 1,600,000 9,431,960
Fair value of ordinary shares at exchange   $ 211 $ 600              
Fair value adjusted finance cost | € € 123                  
Convertible notes | € € 1,100         € 1,100