Table:
|  |  | December 31, 2019 |  |
| --- | --- | --- | --- |
|  | Gross Carrying Amount | Unamortized Discount and Deferred Financing Costs | Net Carrying Amount |
| 2021 Notes | $650 | $(2) | $648 |
| 2022 Notes | 400 | (2) | 398 |
| 2026 Notes | 850 | (7) | 843 |
| 2027 Notes | 400 | (5) | 395 |
| 2047 Notes | 400 | (9) | 391 |
| Total debt | $2,700 | $(25) | $2,675 |
Paragraphs:
Debt
At both December 31, 2019 and December 31, 2018, our total outstanding debt was $2.7 billion, bearing interest at a weighted average rate of 3.18%.
A summary of our outstanding debt as of December 31, 2019, is as follows (amounts in millions):
Question:
What was the change in gross carrying amount between the 2021 and 2022 Notes?
Answer: (650-400) = 250