Summary of Significant Accounting Policies - Allowance for Sales Returns (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Contract With Customer, Refund Liability [Roll Forward] | |||
| Balance beginning of year | $ 190 | $ 219 | $ 215 |
| Additions - charged to earnings | 1,540 | 1,734 | 1,898 |
| Deductions | (1,572) | (1,763) | (1,894) |
| Balance end of year | $ 158 | $ 190 | $ 219 |