9 unchanged sentences
The contracts represent anticipated natural gas needs for future periods and settlements are scheduled to coincide with anticipated natural gas purchases during those future periods.
−Removed: As of March 31, 2020 , we had natural gas fixed price swaps and basis swaps covering certain periods through March 2021.
−Removed: As of March 31, 2020 and December 31, 2019 , we had open derivative contracts for 9.2 million MMBtus and 41.1 million MMBtus, respectively.
−Removed: A $1.00 per MMBtu increase in the forward curve prices of natural gas at March 31, 2020 would result in a favorable change in the fair value of these derivative positions of $6 million , and a $1.00 per MMBtu decrease in the forward curve prices of natural gas would change their fair value unfavorably by $6 million .
+Added: As of June 30, 2020, we had natural gas fixed price swaps and basis swaps covering certain periods through March 2021.
+Added: As of June 30, 2020 and December 31, 2019, we had open derivative contracts for 8.9 million MMBtus and 41.1 million MMBtus, respectively.
+Added: A $1.00 per MMBtu increase in the forward curve prices of natural gas at June 30, 2020 would result in a favorable change in the fair value of these derivative positions of $9 million, and a $1.00 per MMBtu decrease in the forward curve prices of natural gas would change their fair value unfavorably by $9 million.
From time to time we may purchase nitrogen products on the open market to augment or replace production at our facilities.
Interest Rates
−Removed: As of March 31, 2020 , we had six series of senior notes totaling $4.00 billion of principal outstanding with maturity dates of December 1, 2021, June 1, 2023, December 1, 2026, March 15, 2034, June 1, 2043 and March 15, 2044.
+Added: As of June 30, 2020, we had six series of senior notes totaling $4.00 billion of principal outstanding with maturity dates of December 1, 2021, June 1, 2023, December 1, 2026, March 15, 2034, June 1, 2043 and March 15, 2044.
The senior notes have fixed interest rates.
−Removed: As of March 31, 2020 , the carrying value and fair value of our senior notes was approximately $3.96 billion and $3.97 billion , respectively.
+Added: As of June 30, 2020, the carrying value and fair value of our senior notes was approximately $3.96 billion and $4.28 billion, respectively.
Borrowings under the Revolving Credit Agreement bear current market rates of interest and we are subject to interest rate risk on such borrowings.
−Removed: We had $500 million of borrowings outstanding under the Revolving Credit Agreement as of March 31, 2020 , and there were no borrowings outstanding as of December 31, 2019 .
−Removed: Maximum borrowings under the Revolving Credit Agreement during the three months ended March 31, 2020 were $500 million .
−Removed: The weighted-average annual interest rate of borrowings under the Revolving Credit Agreement during the three months ended March 31, 2020 was 2.05% .
−Removed: There were no borrowings under the Revolving Credit Agreement during the three months ended March 31, 2019 .
+Added: There were no borrowings outstanding under the Revolving Credit Agreement as of June 30, 2020, or December 31, 2019.
+Added: Maximum borrowings under the Revolving Credit Agreement during the six months ended June 30, 2020 were $500 million.
+Added: The weighted-average annual interest rate of borrowings under the Revolving Credit Agreement during the six months ended June 30, 2020 was 2.05%.
+Added: There were no borrowings under the Prior Credit Agreement during the six months ended June 30, 2019.
Foreign Currency Exchange Rates
3 unchanged sentences
Compared sentence by sentence after normalising whitespace, quotation marks, case and digits, so re-formatting and restated figures do not read as changed language. Wording changes appear as one removal and one addition. The current filing and the prior one are authoritative.