Share-Based Compensation - Summary of Share Based Compensation Expense (Detail) - USD ($) $ in Millions |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Disclosure Of Share Based Compensation Expense [Line Items] | ||
| Share-based compensation expense | $ 111 | $ 87 |
| Stock Options [Member] | ||
| Disclosure Of Share Based Compensation Expense [Line Items] | ||
| Share-based compensation expense | 5 | 5 |
| TSRUs [Member] | ||
| Disclosure Of Share Based Compensation Expense [Line Items] | ||
| Share-based compensation expense | 68 | 52 |
| PRSUs [Member] | ||
| Disclosure Of Share Based Compensation Expense [Line Items] | ||
| Share-based compensation expense | 33 | 25 |
| Employee Stock Purchase Plan [member] | ||
| Disclosure Of Share Based Compensation Expense [Line Items] | ||
| Share-based compensation expense | $ 5 | $ 5 |