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 December 31, 2020, we had natural gas fixed price swaps and basis swaps covering certain periods through March 2022.
+Added: As of December 31, 2021, we had natural gas derivative contracts covering certain periods through March 2022.
As of December 31, 2021 and 2020, we had open derivative contracts for 60.0 million MMBtus and 34.1 million MMBtus, respectively.
2 unchanged sentences
Interest Rates
−Removed: As of December 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 December 31, 2021, we had five series of senior notes totaling $3.50 billion of principal outstanding with maturity dates of June 1, 2023, December 1, 2026, March 15, 2034, June 1, 2043 and March 15, 2044.
The senior notes have fixed interest rates.
4 unchanged sentences
The weighted-average annual interest rate of borrowings under the Revolving Credit Agreement during 2020 was 2.05%.
−Removed: There were no borrowings under the Prior Credit Agreement or the Revolving Credit Agreement during 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.