v3.26.3
Assets and Liabilities Measured at Fair Value - Summary of Investments of Insurance Subsidiaries Measured at Fair Value on Recurring Basis (Detail) - USD ($)
$ in Millions
Sep. 30, 2026
Dec. 31, 2025
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Money market funds and other $ 257 $ 260
Investments of insurance subsidiaries 574 588
Less amounts classified as current assets (111) (103)
Asset fair value 463 485
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Money market funds and other 257 260
Investments of insurance subsidiaries 258 261
Less amounts classified as current assets (111) (103)
Asset fair value 147 158
Significant Other Observable Inputs (Level 2) [Member]    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Investments of insurance subsidiaries 316 327
Asset fair value 316 327
Debt Securities [Member]    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Debt securities 317 328
Debt Securities [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Debt securities 1 1
Debt Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]    
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Debt securities $ 316 $ 327