Acquisitions - Summary of Acquisition Activity (Detail) - USD ($) $ in Millions |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Disclosure of detailed information about business combination [line items] | ||
| Business Acquired | $ 843 | $ 622 |
| Contingent consideration payments [member] | ||
| Disclosure of detailed information about business combination [line items] | ||
| Business Acquired | 35 | 15 |
| Business combinations [member] | Businesses acquired, net of cash [member] | ||
| Disclosure of detailed information about business combination [line items] | ||
| Business Acquired | 741 | 555 |
| Asset acquisition [member] | ||
| Disclosure of detailed information about business combination [line items] | ||
| Business Acquired | 13 | 15 |
| Investments in businesses [member] | ||
| Disclosure of detailed information about business combination [line items] | ||
| Business Acquired | $ 54 | $ 37 |