v3.26.1
Financial Instruments - Additional Information (Detail)
 1 Months Ended 6 Months Ended
May 31, 2026
USD ($)
Sep. 30, 2025
USD ($)
Jun. 30, 2026
USD ($)
Dec. 31, 2025
USD ($)
Jun. 30, 2025
USD ($)
Disclosure of detailed information about financial instruments [Line Items]          
Restricted cash and cash equivalents     $ 126,000,000 $ 140,000,000  
Derivative instrument liability, Long-term portion     23,000,000 16,000,000  
Due from indemnification arrangement     277,000,000 288,000,000  
Contingent receivable     85,000,000 84,000,000  
Financial assets at fair value through other comprehensive income     184,000,000 168,000,000  
Level 3 [member]          
Disclosure of detailed information about financial instruments [Line Items]          
Financial assets at fair value through other comprehensive income     184,000,000 168,000,000  
Increase in financial assets at fair value through other comprehensive income     19,000,000    
Fixed to Floating Interest Rate Swaps [Member]          
Disclosure of detailed information about financial instruments [Line Items]          
Total Fixed To Floating Interest Rate Swaps Notional Amount     635,000,000    
Fixed to floating interest rate swaps notional amount   $ 410,000,000 225,000,000    
Derivative instrument liability, Long-term portion     23,000,000 16,000,000  
Cash collateral     25,000,000 7,000,000  
Fair Value (loss) gain on swaps     $ (7,000,000)    
5.85% Notes, due 2040 [member] | Fixed to Floating Interest Rate Swaps [Member]          
Disclosure of detailed information about financial instruments [Line Items]          
Borrowings, interest rate     5.85%    
Notional amount     $ 500,000,000    
Maturity date     April 2040    
Total Fixed To Floating Interest Rate Swaps Notional Amount     225,000,000    
4.50% Notes, due 2043 [member] | Fixed to Floating Interest Rate Swaps [Member]          
Disclosure of detailed information about financial instruments [Line Items]          
Borrowings, interest rate     4.50%    
Notional amount     $ 119,000,000    
Maturity date     May 2043    
Total Fixed To Floating Interest Rate Swaps Notional Amount     80,000,000    
5.65% Notes, due 2043 [member] | Fixed to Floating Interest Rate Swaps [Member]          
Disclosure of detailed information about financial instruments [Line Items]          
Borrowings, interest rate     5.65%    
Notional amount     $ 350,000,000    
Maturity date     November 2043    
Total Fixed To Floating Interest Rate Swaps Notional Amount     330,000,000    
Commercial paper [member]          
Disclosure of detailed information about financial instruments [Line Items]          
Borrowings     $ 1,618,000,000 295,000,000  
Commercial paper programs     $ 2,000,000,000    
Amended Credit Facility Maturities In November 2030 [Member]          
Disclosure of detailed information about financial instruments [Line Items]          
Borrowings       0 $ 0
Gross loan commitments       $ 2,000,000,000  
Basis point adjustment to reference interest rate     92    
Maximum credit facility agreement     $ 2,600,000,000    
Additional commitment from lenders     600,000,000    
Purchase price     $ 500,000,000    
Amended Credit Facility Maturities In November 2030 [Member] | Top of range [member]          
Disclosure of detailed information about financial instruments [Line Items]          
Required ratio of net debt to ebitda     4.5    
Amended Credit Facility Maturities In November 2030 [Member] | Bottom of range [member]          
Disclosure of detailed information about financial instruments [Line Items]          
Required ratio of net debt to ebitda     0.8    
Amended Credit Facility Maturities In November 2030 [Member] | Scenario Forecast [member]          
Disclosure of detailed information about financial instruments [Line Items]          
Required ratio of net debt to ebitda     5    
3.35% Notes due 2026 [Member]          
Disclosure of detailed information about financial instruments [Line Items]          
Borrowings, interest rate 3.35%        
Repayments of current borrowings $ 500,000,000