Related Party Transactions - Other Agreements (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
DPG Management Agreement, Operating Service And Construction Fee Paid To Partnership | Affiliated Entity
Related Party Transaction [Line Items]
Fees paid to the Partnership	$ 0.4	$ 0.4	$ 1.2	$ 1.2