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Debt Obligations - Additional Information (Detail)
€ in Millions, $ in Millions
1 Months Ended 3 Months Ended
Apr. 30, 2019
USD ($)
Mar. 31, 2021
USD ($)
Mar. 31, 2021
EUR (€)
Feb. 01, 2021
USD ($)
Dec. 31, 2020
USD ($)
Debt Instrument [Line Items]          
Long term debt currency portion USD   61.00% 61.00%    
Long term debt currency portion EUR   36.00% 36.00%    
Long term debt currency portion CHF   3.00% 3.00%    
Line of Credit Facility, Maximum Borrowing Capacity   $ 2,300      
Convertible Debt [Member]          
Debt Instrument [Line Items]          
Principal amount currently outstanding on the debt instruments   $ 23   $ 491 $ 514
Weighted average interest rate   0.25% 0.25%    
Revolving Credit Facility [Member]          
Debt Instrument [Line Items]          
Debt Instrument, Covenant Description   The net debt to EBITDA ratio limit was 5.50x through March 31, 2021, gradually declines to 5.00x in the third and fourth quarters of 2021, 4.50x in the first quarter of 2022, and continues to gradually decline over the remaining term of the RCF to 3.50x in the first quarter of 2023.      
Revolving Credit Facility [Member] | Maximum [Member]          
Debt Instrument [Line Items]          
Long Term Debt Payable Under Revolving Credit Facility | €     € 0    
Revolving Credit Facility [Member] | Trache A [Member]          
Debt Instrument [Line Items]          
Revolving credit facility $ 1,150        
Revolving Credit Facility [Member] | Trache A [Member] | Trache A Extension [Member]          
Debt Instrument [Line Items]          
Revolving credit facility $ 1,065        
Line of credit facility, expiration date Apr. 08, 2023        
Revolving Credit Facility [Member] | Trache B [Member]          
Debt Instrument [Line Items]          
Revolving credit facility $ 1,150        
Line of credit facility, expiration date Apr. 08, 2024