Segment Reporting - Total Assets for Reportable Segments (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Assets	$ 16,130,668	$ 14,699,924
Southern [Member]
Segment Reporting Information [Line Items]
Assets	3,718,418	3,513,355
Eastern [Member]
Segment Reporting Information [Line Items]
Assets	4,076,614	3,652,311
Western [Member]
Segment Reporting Information [Line Items]
Assets	2,542,731	2,260,222
Central [Member]
Segment Reporting Information [Line Items]
Assets	2,680,170	2,332,564
Canada [Member]
Segment Reporting Information [Line Items]
Assets	2,557,822	2,513,608
Corporate [Member]
Segment Reporting Information [Line Items]
Assets	$ 554,913	$ 427,864