Supplemental Financial Statement Information (Allowance for Credit on Losses for Accounts and Other Receivables) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of year	$ 29,179	$ 35,344
Amounts charged to expense	5,280	2,488
Write-offs, recoveries and other	(21,763)	(7,085)
Balance at end of period	12,696	30,747
Accounts and other receivables
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at end of period	12,176	13,959
Other assets
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at end of period	$ 520	$ 16,788