Derivative Instruments and Hedging Activities (Tables)

12 Months Ended

Dec. 31, 2021

Gains or Losses Recognized in AOCI for the Cash Flow Hedges

The following tables provide information on gains or losses recognized in AOCL for the cash flow hedges for the periods indicated:

	Years ended December 31,
	2021		2020		2019
$ in millions (net of tax)	Interest Rate Hedge		Interest Rate Hedge		Power		Interest Rate Hedge
Beginning accumulated derivative gain in AOCL	$	13.6	$	14.5	$	0.4	$	16.6
Net losses associated with current period hedging transactions	—		—		—		(1.0)
Net gains reclassified to earnings:
Interest expense	(0.8)		(0.9)		—		(1.1)
Income from discontinued operations before income tax	—		—		(0.4)		—
Ending accumulated derivative gain in AOCL	$	12.8	$	13.6	$	—	$	14.5
Portion expected to be reclassified to earnings in the next twelve months	$	(0.8)

THE DAYTON POWER AND LIGHT COMPANY [Member]

Gains or Losses Recognized in AOCI for the Cash Flow Hedges

	Years ended December 31,
	2020		2019
$ in millions (net of tax)	Interest Rate Hedge		Interest Rate Hedge
Beginning accumulated derivative gain / (loss) in AOCL	$	(0.4)	$	0.6
Net losses associated with current period hedging transactions	(0.2)		(0.8)
Net losses / (gains) reclassified to earnings:
Interest expense	0.6		(0.2)
Ending accumulated derivative loss in AOCL	$	—	$	(0.4)