Leases (Components Of Lease Expense) (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Lease Expense
Operating lease expense	[1]	$ 13,249	$ 15,550	$ 26,300	$ 30,911
Sublease income	[1]	(45)	(46)	(91)	(90)
Net lease expense	[1]	$ 13,204	$ 15,504	$ 26,209	$ 30,821

[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.