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Debt - Summary of Debt Instruments (Detail) - USD ($)
Dec. 31, 2025
Sep. 04, 2025
Feb. 19, 2025
Dec. 31, 2024
Current portion of long-term debt        
Total short-term debt $ 587,100,000     $ 863,000,000
Long-term debt        
Senior Notes due     $ 600,000,000  
Debt discount and issuance costs (46,100,000)     (34,100,000)
Adjustment related to interest rate swaps (112,400,000)     (158,600,000)
Total long-term debt 6,932,000,000     5,341,600,000
Uncommitted Credit Facility [Member]        
Current portion of long-term debt        
Outstanding borrowings 0      
5.050% [Member] | Due in 2030 [Member]        
Long-term debt        
Senior Notes due     550,000,000  
5.500% [Member] | Due in 2035 [Member]        
Long-term debt        
Senior Notes due     $ 600,000,000  
Senior Notes [Member] | 3.550% [Member] | Due in 2025 [Member]        
Long-term debt        
Senior Notes due       863,000,000.0
Senior Notes [Member] | 3.550% [Member] | Due in 2030 [Member]        
Long-term debt        
Senior Notes due 257,500,000     257,500,000
Senior Notes [Member] | 3.050% [Member] | Due in 2026 [Member]        
Long-term debt        
Senior Notes due       600,000,000.0
Senior Notes [Member] | 4.700% [Member] | Due in 2027 [Member]        
Long-term debt        
Senior Notes due 600,000,000.0      
Senior Notes [Member] | 5.350% [Member] | Due in 2028 [Member]        
Long-term debt        
Senior Notes due 500,000,000     500,000,000
Senior Notes [Member] | 5.050% [Member] | Due in 2030 [Member]        
Long-term debt        
Senior Notes due 550,000,000      
Senior Notes [Member] | 2.600% [Member] | Due in 2031 [Member]        
Long-term debt        
Senior Notes due 750,000,000     750,000,000.0
Senior Notes [Member] | 5.200% [Member] | Due in 2034 [Member]        
Long-term debt        
Senior Notes due 700,000,000     700,000,000
Senior Notes [Member] | 4.250% [Member] | Due in 2035 [Member]        
Long-term debt        
Senior Notes due 253,400,000     253,400,000
Senior Notes [Member] | 5.500% [Member] | Due in 2035 [Member]        
Long-term debt        
Senior Notes due 600,000,000      
Senior Notes [Member] | 5.750% [Member] | Due in 2039 [Member]        
Long-term debt        
Senior Notes due 317,800,000     317,800,000
Senior Notes [Member] | 4.450% [Member] | Due in 2045 [Member]        
Long-term debt        
Senior Notes due 395,400,000     395,400,000
Euro Notes [Member] | 2.425% [Member] | Due in 2026 [Member]        
Long-term debt        
Senior Notes due 587,100,000     517,700,000
Euro Notes [Member] | 1.164% [Member] | Due in 2027 [Member]        
Long-term debt        
Senior Notes due 587,100,000     517,700,000
Euro Notes [Member] | 3.518% [Member] | Due in 2032 [Member]        
Long-term debt        
Senior Notes due 822,000,000     $ 724,800,000
Swiss Notes [Member] | 0.930% [Member] | Due in 2030 [Member]        
Long-term debt        
Senior Notes due 265,100,000 $ 210,000,000    
Swiss Notes [Member] | 1.560% [Member] | Due in 2035 [Member]        
Long-term debt        
Senior Notes due $ 492,200,000 $ 390,000,000