Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Current Assets
Cash and cash equivalents	$ 169,319	$ 145,886
Restricted cash	20,467	12,175
Investments in marketable equity securities and other investments	622,408	824,445
Accounts receivable, net	560,779	607,471
Inventories and contracts in progress	226,811	141,471
Prepaid expenses	97,450	81,741
Income taxes receivable	9,313	32,744
Other current assets	1,547	1,241
Total Current Assets	1,708,094	1,847,174
Property, Plant and Equipment, Net	503,000	468,126
Lease Right-of-Use Assets	429,403	437,969
Investments in Affiliates	186,419	155,444
Goodwill, Net	1,560,953	1,649,582
Indefinite-Lived Intangible Assets	178,934	142,180
Amortized Intangible Assets, Net	161,422	247,120
Prepaid Pension Cost	1,658,046	2,306,514
Deferred Income Taxes	6,812	7,900
Deferred Charges and Other Assets (includes $646 and $782 of restricted cash)	189,132	163,516
Total Assets	6,582,215	7,425,525
Current Liabilities
Accounts payable and accrued liabilities	563,005	583,629
Deferred revenue	381,416	358,720
Income taxes payable	3,766	4,585
Current portion of lease liabilities	70,007	77,655
Current portion of long-term debt	155,813	141,749
Total Current Liabilities	1,174,007	1,166,338
Accrued Compensation and Related Benefits	134,921	175,391
Other Liabilities	37,506	36,497
Deferred Income Taxes	466,275	676,706
Mandatorily Redeemable Noncontrolling Interest	30,845	13,661
Lease Liabilities	393,626	405,200
Long-Term Debt	570,547	525,752
Total Liabilities	2,807,727	2,999,545
Commitments and Contingencies (Note 18)
Redeemable Noncontrolling Interests	21,827	14,311
Preferred Stock, $1 par value; 977,000 shares authorized, none issued	0	0
Common Stockholders’ Equity
Capital in excess of par value	390,438	389,456
Retained earnings	7,163,128	7,126,761
Accumulated other comprehensive income, net of taxes
Cumulative foreign currency translation adjustment	(54,638)	(6,298)
Unrealized gain on pensions and other postretirement plans	388,591	979,157
Cash flow hedges	2,198	(1,471)
Cost of 15,213,398 and 15,093,934 shares of Class B common stock held in treasury	(4,178,334)	(4,108,022)
Total Common Stockholders’ Equity	3,731,383	4,399,583
Noncontrolling Interests	21,278	12,086
Total Equity	3,752,661	4,411,669
Total Liabilities and Equity	6,582,215	7,425,525
Class A Common Stock [Member]
Common Stockholders’ Equity
Common stock	964	964
Class B Common Stock [Member]
Common Stockholders’ Equity
Common stock	$ 19,036	$ 19,036