Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Current Assets
Cash and cash equivalents	$ 145,886	$ 413,991
Restricted cash	12,175	9,063
Investments in marketable equity securities and other investments	824,445	587,582
Accounts receivable, net	607,471	537,156
Inventories and contracts in progress	141,471	120,622
Prepaid expenses	81,741	75,523
Income taxes receivable	32,744	29,313
Other current assets	1,241	942
Total Current Assets	1,847,174	1,774,192
Property, Plant and Equipment, Net	468,126	378,286
Lease Right-of-Use Assets	437,969	462,560
Investments in Affiliates	155,444	155,777
Goodwill, Net	1,649,582	1,484,750
Indefinite-Lived Intangible Assets	142,180	120,437
Amortized Intangible Assets, Net	247,120	204,646
Prepaid Pension Cost	2,306,514	1,708,305
Deferred Income Taxes	7,900	8,396
Deferred Charges and Other Assets (includes $782 and $0 of restricted cash)	163,516	146,770
Total Assets	7,425,525	6,444,119
Current Liabilities
Accounts payable and accrued liabilities	583,629	520,236
Deferred revenue	358,720	331,021
Income taxes payable	4,585	5,140
Current portion of lease liabilities	77,655	86,797
Current portion of long-term debt	141,749	6,452
Total Current Liabilities	1,166,338	949,646
Accrued Compensation and Related Benefits	175,391	201,918
Other Liabilities	36,497	48,768
Deferred Income Taxes	676,706	521,274
Mandatorily Redeemable Noncontrolling Interest	13,661	9,240
Lease Liabilities	405,200	428,849
Long-Term Debt	525,752	506,103
Total Liabilities	2,999,545	2,665,798
Commitments and Contingencies
Redeemable Noncontrolling Interests	14,311	11,928
Preferred Stock, $1 par value; 977,000 shares authorized, none issued	0	0
Common Stockholders’ Equity
Capital in excess of par value	389,456	388,159
Retained earnings	7,126,761	6,804,822
Accumulated other comprehensive income, net of taxes
Cumulative foreign currency translation adjustment	(6,298)	9,754
Unrealized gain on pensions and other postretirement plans	979,157	595,287
Cash flow hedges	(1,471)	(1,727)
Cost of 15,093,934 and 15,017,167 shares of Class B common stock held in treasury	(4,108,022)	(4,056,993)
Total Common Stockholders’ Equity	4,399,583	3,759,302
Noncontrolling Interests	12,086	7,091
Total Equity	4,411,669	3,766,393
Liabilities and Equity, Total	7,425,525	6,444,119
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