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Debt Obligations - Additional Information (Detail) - USD ($)
$ in Millions
1 Months Ended 6 Months Ended
Apr. 30, 2019
Jun. 30, 2021
Jul. 31, 2021
Feb. 01, 2021
Dec. 31, 2020
Debt Instrument [Line Items]          
Senior notes   $ 25,183     $ 25,490
Long term debt currency portion USD   63.00%      
Long term debt currency portion EUR   34.00%      
Long term debt currency portion CHF   3.00%      
Line of Credit Facility, Maximum Borrowing Capacity   $ 2,300      
Senior Notes [Member]          
Debt Instrument [Line Items]          
Weighted average interest rate     2.20%    
Senior notes     $ 1,475    
Weighted average interest rate     2.20%    
Convertible Debt [Member]          
Debt Instrument [Line Items]          
Principal amount currently outstanding on the debt instruments   $ 23   $ 491 $ 514
Weighted average interest rate   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 June 30, 2021, gradually declines to 5.00x in the third and fourth quarters of 2021, 4.50x in the first and second quarters of 2022, and continues to gradually decline over the remaining term of the RCF to 3.50x in the first quarter of 2023.      
Long Term Debt Payable Under Revolving Credit Facility   $ 500      
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