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DERIVATIVE INSTRUMENTS (Tables)

9 Months Ended

Sep. 30, 2020

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of derivative assets and liabilities

The following table shows our derivative assets and derivative liabilities, along with their classification on our balance sheets.

						September 30, 2020												December 31, 2019
(in millions)						Derivative Assets						Derivative Liabilities						Derivative Assets						Derivative Liabilities
Other current
Natural gas contracts						$	31.1					$	4.7					$	3.4					$	21.8
FTRs						4.0						—						3.1						—
Coal contracts						0.2						1.3						0.2						0.2
Interest rate swaps						—						6.6						—						2.8
Total other current (1)						35.3						12.6						6.7						24.8
Other long-term
Natural gas contracts						4.5						0.1						—						0.9
Coal contracts						0.3						1.1						0.2						—
Interest rate swaps						—						1.7						—						3.2
Total other long-term (1)						4.8						2.9						0.2						4.1
Total						$	40.1					$	15.5					$	6.9					$	28.9

(1)On our balance sheets, we classify derivative assets and liabilities as other current or other long-term based on the maturities of the underlying contracts.

Schedule of estimated notional sales volumes and realized gains (losses)

Our estimated notional sales volumes and realized gains (losses) were as follows:

						Three Months Ended September 30, 2020												Three Months Ended September 30, 2019
(in millions)						Volumes						Gains (Losses)						Volumes						Gains (Losses)
Natural gas contracts						36.2 Dth						$	(12.0)					37.8 Dth						$	(13.2)
FTRs						8.3 MWh						1.1						7.8 MWh						7.6
Total												$	(10.9)											$	(5.6)

						Nine Months Ended September 30, 2020												Nine Months Ended September 30, 2019
(in millions)						Volumes						Gains (Losses)						Volumes						Gains (Losses)
Natural gas contracts						139.3 Dth						$	(53.9)					137.7 Dth						$	(16.8)
FTRs						22.7 MWh						3.1						23.9 MWh						12.9
Total												$	(50.8)											$	(3.9)

Schedule of net derivative instruments

The following table shows derivative assets and derivative liabilities if derivative instruments by counterparty were presented net on our balance sheets:

						September 30, 2020												December 31, 2019
(in millions)						Derivative Assets						Derivative Liabilities						Derivative Assets						Derivative Liabilities
Gross amount recognized on the balance sheet						$	40.1					$	15.5					$	6.9					$	28.9
Gross amount not offset on the balance sheet						(15.6)			(1)			(1.0)						(1.4)						(21.4)			(2)
Net amount						$	24.5					$	14.5					$	5.5					$	7.5

(1)Includes cash collateral received of $14.6 million.

(2)Includes cash collateral posted of $20.0 million.

Schedule of cash flow hedges recorded in other comprehensive loss and earnings

The table below shows the amounts related to these cash flow hedges recorded in other comprehensive loss and in earnings, along with our total interest expense on the income statements:

						Three Months Ended September 30												Nine Months Ended September 30
(in millions)						2020						2019						2020						2019
Derivative losses recognized in other comprehensive loss						$	—					$	(0.5)					$	(5.8)					$	(5.3)
Net derivative gains (losses) reclassified from accumulated other comprehensive loss to interest expense						(1.3)						0.2						(2.0)						1.0
Total interest expense line item on the income statements						122.0						125.8						375.8						374.3

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Tabular disclosure of gain (loss) on derivative and nonderivative instruments designated and qualifying as cash flow hedge recorded in accumulated other comprehensive income (AOCI) and reclassified into earnings.

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Tabular disclosure of the location and fair value amounts of derivative instruments (and nonderivative instruments that are designated and qualify as hedging instruments) reported in the statement of financial position.

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