Commitments and Contingencies (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2022	Dec. 31, 2021
Loss Contingencies [Line Items]
Letters of credit outstanding	$ 285,000		$ 285,000			$ 303,400
Surety bonds outstanding	2,200,000		$ 2,200,000			2,200,000
Maximum product warranty in years			10 years
Self-insurance liabilities	$ 605,192	$ 652,686	$ 605,192	$ 652,686	$ 652,745	$ 635,857	$ 644,278	$ 627,067
Incurred but not reported percentage of liability reserves	77.00%		77.00%			74.00%
ROU assets	$ 73,000		$ 73,000			$ 73,500
Operating lease liabilities	88,764		88,764			90,100
Additional ROU assets under operating leases	4,400	3,700	8,300	4,200
Payments on lease liabilities	6,000	5,600	11,300	11,100
Total lease expense	14,300	13,400	28,500	26,200
Variable lease costs	3,200	2,200	6,200	4,400
Short-term lease costs	4,500	$ 5,500	8,700	$ 10,500
Other Assets
Loss Contingencies [Line Items]
Recorded insurance receivables	$ 39,700		$ 39,700			$ 43,700