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Debt - Additional Information (Detail)
€ in Billions, ¥ in Billions
9 Months Ended
Sep. 18, 2020
USD ($)
Apr. 01, 2020
USD ($)
Mar. 20, 2020
USD ($)
Nov. 01, 2019
USD ($)
Sep. 30, 2020
USD ($)
Jun. 30, 2021
Mar. 31, 2021
Dec. 31, 2020
Sep. 30, 2020
EUR (€)
Sep. 30, 2020
JPY (¥)
Apr. 23, 2020
USD ($)
Dec. 31, 2019
USD ($)
Sep. 30, 2016
USD ($)
Debt Instrument [Line Items]                          
Debt, long-term and short-term, combined amount         $ 8,300,000,000                
Aggregate principal amount of Senior Notes         8,000,000,000.0                
Other debt and fair value adjustments, total         3,900,000                
Debt discount and issuance costs         51,700,000             $ 37,100,000  
Estimated fair value         $ 8,693,400,000                
2019 Credit Agreement [Member] | Maximum [Member]                          
Debt Instrument [Line Items]                          
Consolidated leverage ratio         5.75%       5.75% 5.75%      
2019 Credit Agreement [Member] | Maximum [Member] | Scenario Forecast [Member]                          
Debt Instrument [Line Items]                          
Consolidated leverage ratio             5.00% 5.75%          
Consolidated leverage ratio thereafter           4.50%              
2019 Credit Agreement [Member] | Minimum [Member]                          
Debt Instrument [Line Items]                          
Consolidated leverage ratio         1.00%       1.00% 1.00%      
2019 Credit Agreement [Member] | Minimum [Member] | Scenario Forecast [Member]                          
Debt Instrument [Line Items]                          
Consolidated leverage ratio             1.00% 1.00%          
Consolidated leverage ratio thereafter           1.00%              
September 2020 Credit Agreement [Member]                          
Debt Instrument [Line Items]                          
Maturity date of debt instrument Sep. 17, 2021                        
Principal amount, unsecured credit facility $ 1,000,000,000.0                   $ 1,000,000,000.0    
Outstanding borrowings         $ 0                
September 2020 Credit Agreement [Member] | Maximum [Member]                          
Debt Instrument [Line Items]                          
Consolidated leverage ratio 5.75%                        
September 2020 Credit Agreement [Member] | Maximum [Member] | Scenario Forecast [Member]                          
Debt Instrument [Line Items]                          
Consolidated leverage ratio             5.00% 5.75%          
Consolidated leverage ratio thereafter           4.50%              
September 2020 Credit Agreement [Member] | Minimum [Member]                          
Debt Instrument [Line Items]                          
Consolidated leverage ratio 1.00%                        
September 2020 Credit Agreement [Member] | Minimum [Member] | Scenario Forecast [Member]                          
Debt Instrument [Line Items]                          
Consolidated leverage ratio             1.00% 1.00%          
Consolidated leverage ratio thereafter           1.00%              
Euro Notes [Member]                          
Debt Instrument [Line Items]                          
Term loan | €                 € 1.5        
Japan Term Loan A [Member]                          
Debt Instrument [Line Items]                          
Term loan         $ 110,800,000         ¥ 11.7   106,900,000  
Maturity date of debt instrument         Sep. 27, 2022                
Japan Term Loan B [Member]                          
Debt Instrument [Line Items]                          
Term loan         $ 201,700,000         ¥ 21.3   $ 194,700,000  
Maturity date of debt instrument         Sep. 27, 2022                
Senior Notes [Member] | 3.050% [Member] | Due in 2026 [Member]                          
Debt Instrument [Line Items]                          
Aggregate principal amount of Senior Notes     $ 600,000,000.0   $ 600,000,000.0                
Maturity date of debt instrument     Jan. 15, 2026                    
Interest rate     3.05%   3.05%       3.05% 3.05%      
Senior Notes [Member] | 3.550% [Member] | Due in 2030 [Member]                          
Debt Instrument [Line Items]                          
Aggregate principal amount of Senior Notes     $ 900,000,000.0   $ 900,000,000.0                
Maturity date of debt instrument     Mar. 20, 2030                    
Interest rate     3.55%   3.55%       3.55% 3.55%      
Senior Notes [Member] | 2.700% [Member] | Due in 2020 [Member]                          
Debt Instrument [Line Items]                          
Maturity date of debt instrument   Apr. 01, 2020                      
Interest rate   2.70%                   2.70%  
Repayments of term loan   $ 1,500,000,000                      
Multicurrency Revolving Facility [Member] | 2019 Credit Agreement [Member]                          
Debt Instrument [Line Items]                          
Maturity date of debt instrument       Nov. 01, 2024                  
Principal amount, unsecured credit facility       $ 1,500,000,000                  
Debt instrument term       5 years                  
Outstanding borrowings         $ 0                
Multicurrency Revolving Facility [Member] | 2016 Credit Agreement [Member]                          
Debt Instrument [Line Items]                          
Principal amount, unsecured credit facility                         $ 1,500,000,000
Japan Term Loan A and Japan Term Loan B [Member]                          
Debt Instrument [Line Items]                          
Estimated fair value         $ 310,800,000