Leases - Two Creeks Solar Park (Details) - Two Creeks $ in Millions	12 Months Ended
	Dec. 31, 2021 USD ($) a extension	Dec. 31, 2020 USD ($)
Leases
Solar land lease acreage | a	600
Lease initial term	30 years
Number of contract extensions | extension	2
Renewal term	10 years
Lease extended term	50 years
Finance lease obligation	$ 9.8	$ 7.9
Finance lease obligation at end of life of solar land contract	$ 0.0