Table:
|  | As at December 31 |  |
| --- | --- | --- |
| (In millions of dollars, except exchange rates, percentages, and years) | 2019 | 2018 |
| US dollar-denominated long-term debt 1 | US$ 8,300 | US$ 6,050 |
| Hedged with debt derivatives | US$ 8,300 | US$ 6,050 |
| Hedged exchange rate | 1.1932 | 1.1438 |
| Percent hedged2 | 100.0% | 100.0% |
| Amount of borrowings at fixed rates 3 |  |  |
| Total borrowings | $ 17,496 | $ 15,320 |
| Total borrowings at fixed rates | $ 15,254 | $ 13,070 |
| Percent of borrowings at fixed rates | 87.2% | 85.3% |
| Weighted average interest rate on borrowings | 4.30% | 4.45% |
| Weighted average term to maturity | 14.1 years | 10.7 years |
Paragraphs:
As at December 31, 2019, we had US$8.3 billion of US dollardenominated senior notes and debentures, all of which were hedged using debt derivatives.
1 US dollar-denominated long-term debt reflects the hedged exchange rate and the hedged interest rate.
2 Pursuant to the requirements for hedge accounting under IFRS 9, Financial instruments, as at December 31, 2019 and December 31, 2018, RCI accounted for 100% of its debt derivatives related to senior notes as hedges against designated US dollar-denominated debt. As a result, as at December 31, 2019 and 2018, 100% of our US dollar-denominated senior notes and debentures are hedged for accounting and economic purposes.
3 Borrowings include long-term debt, including the impact of debt derivatives, and short-term borrowings associated with our US CP and accounts receivable securitization programs.
Question:
What was the increase / (decrease) in US dollar-denominated long-term debt from 2018 to 2019?
Answer: 8300 - 6050 = 2250