Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Statement of Comprehensive Income [Abstract]
Net Income	$ 23.9	$ 18.2	$ 74.8	$ 64.4
Other comprehensive income (loss)	(0.5)	0.2	(1.1)	1.2
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	23.4	18.4	73.7	65.6
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax			(0.8)	(0.9)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax			0.8	0.9
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax			(0.3)	2.1
Net Income	23.9	18.2	74.8	64.4
Other comprehensive income (loss)	(0.5)	0.2	(1.1)	1.2
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	23.4	18.4	73.7	65.6
Unrealized Gain (Loss) On Cash Flow Hedging Instruments, Tax	(0.1)	0.1	0.1	0.6
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Interest Rate Swaps During Period, Tax	0.0	0.1	(0.2)	0.2
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent
Statement of Comprehensive Income [Abstract]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	(0.1)	(0.1)	(0.2)	(0.2)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	0.1	0.1	0.2	0.2
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax	0.0	0.0	0.0	(0.1)
Accumulated (Gain) Loss from Commodity Contracts Cash Flows Hedges [Member]
Statement of Comprehensive Income [Abstract]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	(0.1)	0.1	(0.6)	(0.7)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	0.1	(0.1)	0.6	0.7
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	(0.3)	0.1	0.4	1.6
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax	0.0	(0.1)	(0.2)	(0.4)
Accumulated (Gain) Loss from Interest Rate Swap Cash Flows Hedges [Member]
Statement of Comprehensive Income [Abstract]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax				(0.2)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax				0.2
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	$ 0.0	$ 0.1	$ (0.7)	$ 0.5

CHESAPEAKE UTILITIES CORP 10-Q