Equity Capital and Earnings Per Share - Reconciliation of Denominator (Numbers of Shares) in Calculation of Basic and Diluted Earnings Per Share (Detail) - shares shares in Millions |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Earnings per share [line items] | ||
| Weighted average number of common shares (in millions) | 1,703 | 1,779 |
| Dilutive stock-based awards (in millions) | 5 | 6 |
| Weighted average number of diluted common shares (in millions) | 1,708 | 1,785 |
| Share based payments arrangements | ||
| Earnings per share [line items] | ||
| Antidilutive securities | 0 | 0 |