Revenue (Schedule of Changes in Contract Assets) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Change in Contract with Customer, Asset [Abstract]
Beginning balance as of December 31	$ 142,779	$ 161,061
Revenue recognized	2,037,206	1,848,807
Amounts collected or invoiced	(2,024,742)	(1,867,089)
Ending balance as of December 31	$ 155,243	$ 142,779