Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021	Dec. 31, 2020
Supplemental Cash Flow Information
Cash and cash equivalents	$ 99,226		$ 142,698
Restricted cash (included in other assets)	9,995		8,787
Total	109,221	$ 128,513	$ 151,485	$ 123,652
Interest, net of amounts capitalized	144,100	151,700
Income taxes, net of refunds	8,800	12,700
Accrued construction related costs	$ 469,600	$ 370,300