Supplemental Financial Statement Information (Balance Sheet Information) (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Other assets:
Long-term investments	$ 259,977	$ 333,052
Other (net of allowance of $520 and $18,011, respectively)	120,442	138,032
Total	380,419	471,084
Accounts payable and accrued liabilities:
Accounts payable	315,351	310,993
Customer deposits	209,662	185,528
Employee related liabilities	216,273	233,876
Other	165,797	192,146
Total	907,083	922,543
Other noncurrent liabilities:
Pension liabilities	74,681	115,457
Postretirement medical benefits	87,745	126,675
Other	65,303	66,596
Total	227,729	308,728
Condensed Balance Sheet Statements, Captions [Line Items]
Allowance	5,864	29,179	$ 35,344	$ 17,830
Other assets
Condensed Balance Sheet Statements, Captions [Line Items]
Allowance	$ 520	$ 18,011	$ 16,445