Cash Flows (Summary Of Non-Cash Activities And Other Supplemental Data) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Non-Cash Investing and Financing Activities:
Operating lease additions	$ 11,885	$ 28,522	$ 10,904
Finance lease additions	0	0	14,255
Capital expenditures incurred but not yet paid	8,298	8,826	5,689
Contingent consideration for purchase of noncontrolling interests	2,806	0	0
Supplemental Data:
Cash interest paid	125,060	114,528	131,167
Income taxes paid, net	$ 50,490	$ 59,850	$ 99,852