Supplemental Financial Statement Information (Balance Sheet Information) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Other assets:
Long-term investments	$ 333,052	$ 364,212
Other (net of allowance of $18,011 and $16,445, respectively)	138,032	127,302
Other assets	18,011	16,445	$ 0
Total	471,084	491,514
Accounts payable and accrued liabilities:
Accounts payable	310,993	295,173
Customer deposits	185,528	165,774
Employee related liabilities	233,876	232,236
Other	192,146	187,433
Total	922,543	880,616
Other noncurrent liabilities:
Pension liabilities	115,457	235,439
Postretirement medical benefits	126,675	153,838
Other	66,596	47,738
Total	$ 308,728	$ 437,015

Sum of the carrying values as of the balance sheet date of obligations incurred through that date and due within one year (or the operating cycle, if longer), including liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received, taxes, interest, rent and utilities, accrued salaries and bonuses, payroll taxes and fringe benefits.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

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