Cash Flows (Summary Of Non-Cash Activities And Other Supplemental Data) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Non-Cash Investing and Financing Activities:
Operating lease additions	$ 7,647	$ 11,885	$ 28,522
Capital expenditures incurred but not yet paid	974	8,298	8,826
Supplemental Data:
Cash interest paid	149,535	125,060	114,528
Income taxes paid, net	$ 63,020	$ 50,490	$ 59,850