Segment Reporting - Changes in Goodwill by Reportable Segment (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Goodwill [Line Items]
Goodwill, Beginning Balance	$ 7,404,400	$ 6,902,297
Goodwill acquired	360,061	54,359
Goodwill acquisition adjustments		(3,021)
Impact of changes in foreign currency	(59,742)	38,831
Goodwill, Ending Balance	7,704,719	6,992,466
Southern | Reportable Segments
Goodwill [Line Items]
Goodwill, Beginning Balance	1,559,703	1,547,894
Goodwill acquired	6,370	0
Goodwill acquisition adjustments		(1,493)
Impact of changes in foreign currency	0	0
Goodwill, Ending Balance	1,566,073	1,546,401
Western | Reportable Segments
Goodwill [Line Items]
Goodwill, Beginning Balance	779,455	732,335
Goodwill acquired	64,184	45,072
Goodwill acquisition adjustments		0
Impact of changes in foreign currency	0	0
Goodwill, Ending Balance	843,639	777,407
Central | Reportable Segments
Goodwill [Line Items]
Goodwill, Beginning Balance	1,008,500	1,003,470
Goodwill acquired	485	4,026
Goodwill acquisition adjustments		0
Impact of changes in foreign currency	0	0
Goodwill, Ending Balance	1,008,985	1,007,496
Eastern | Reportable Segments
Goodwill [Line Items]
Goodwill, Beginning Balance	1,587,491	1,189,111
Goodwill acquired	34,586	3,895
Goodwill acquisition adjustments		0
Impact of changes in foreign currency	0	0
Goodwill, Ending Balance	1,622,077	1,193,006
Canada | Reportable Segments
Goodwill [Line Items]
Goodwill, Beginning Balance	1,723,068	1,684,670
Goodwill acquired	152,777	0
Goodwill acquisition adjustments		(1,528)
Impact of changes in foreign currency	(59,742)	38,831
Goodwill, Ending Balance	1,816,103	1,721,973
MidSouth | Reportable Segments
Goodwill [Line Items]
Goodwill, Beginning Balance	746,183	744,817
Goodwill acquired	101,659	1,366
Goodwill acquisition adjustments		0
Impact of changes in foreign currency	0	0
Goodwill, Ending Balance	$ 847,842	$ 746,183