Stockholders' Equity (Summary of Purchases of Common Stock) (Details) - USD ($) $ / shares in Units, $ in Millions |
3 Months Ended | 12 Months Ended | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Mar. 31, 2026 |
Dec. 31, 2025 |
Sep. 30, 2025 |
Jun. 30, 2025 |
Mar. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
Dec. 31, 2022 |
Dec. 31, 2021 |
|
| 5.0 Billion Dollar Share Repurchase Program Closed [Member] | ||||||||||
| Stockholders Equity [Line Items] | ||||||||||
| Total Number of Shares Purchased | 1,850,000 | 7,118,000 | 7,324,000 | 7,866,000 | 8,505,000 | 30,813,000 | 23,944,000 | 19,350,000 | 11,708,000 | 13,983 |
| Dollar Value of Shares Purchased | $ 69 | $ 250 | $ 250 | $ 249 | $ 301 | $ 1,050 | $ 1,044 | $ 992 | $ 718 | $ 589 |
| Average Price Paid per Share | $ 37.39 | $ 35.12 | $ 34.06 | $ 31.78 | $ 35.33 | $ 34.07 | $ 43.61 | $ 51.23 | $ 61.36 | $ 42.15 |
| Share Repurchase Program Open [Member] | ||||||||||
| Stockholders Equity [Line Items] | ||||||||||
| Total Number of Shares Purchased | 101,648,000 | |||||||||
| Dollar Value of Shares Purchased | $ 4,462 | |||||||||
| Average Price Paid per Share | $ 43.9 | |||||||||