Leases (Components Of Lease Expense) (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Lease Expense
Operating lease expense	[1]	$ 12,936	$ 15,342	$ 39,230	$ 46,255
Sublease income	[1]	(45)	(45)	(136)	(135)
Net lease expense	[1]	$ 12,891	$ 15,297	$ 39,094	$ 46,120

[1] Includes short-term leases and variable lease costs, which are immaterial. Included in both cost of services provided and goods sold and selling, general and administrative expenses.