Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Current Assets
Cash and cash equivalents	$ 350,135	$ 413,991
Restricted cash	22,484	9,063
Investments in marketable equity securities and other investments	715,580	587,582
Accounts receivable, net	515,220	537,156
Inventories and contracts in progress	132,136	120,622
Prepaid expenses	85,119	75,523
Income taxes receivable	15,339	29,313
Other current assets	1,427	942
Total Current Assets	1,837,440	1,774,192
Property, Plant and Equipment, Net	375,862	378,286
Lease Right-of-Use Assets	453,193	462,560
Investments in Affiliates	169,203	155,777
Goodwill, Net	1,485,137	1,484,750
Indefinite-Lived Intangible Assets	121,050	120,437
Amortized Intangible Assets, Net	190,041	204,646
Prepaid Pension Cost	1,730,625	1,708,305
Deferred Income Taxes	7,651	8,396
Deferred Charges and Other Assets	148,218	146,770
Total Assets	6,518,420	6,444,119
Current Liabilities
Accounts payable and accrued liabilities	492,625	520,236
Deferred revenue	331,678	331,021
Income taxes payable	6,891	5,140
Current portion of lease liabilities	84,749	86,797
Current portion of long-term debt	4,238	6,452
Dividends declared	7,553	0
Total Current Liabilities	927,734	949,646
Accrued Compensation and Related Benefits	196,558	201,918
Other Liabilities	36,591	48,768
Deferred Income Taxes	549,418	521,274
Mandatorily Redeemable Noncontrolling Interest	10,272	9,240
Lease Liabilities	419,131	428,849
Long-Term Debt	506,091	506,103
Total Liabilities	2,645,795	2,665,798
Redeemable Noncontrolling Interests	7,786	11,928
Preferred Stock	0	0
Common Stockholders’ Equity
Common stock	20,000	20,000
Capital in excess of par value	385,257	388,159
Retained earnings	6,902,166	6,804,822
Accumulated other comprehensive income, net of taxes
Cumulative foreign currency translation adjustment	9,268	9,754
Unrealized gain on pensions and other postretirement plans	594,093	595,287
Cash flow hedges	(1,250)	(1,727)
Cost of Class B common stock held in treasury	(4,051,909)	(4,056,993)
Total Common Stockholders’ Equity	3,857,625	3,759,302
Noncontrolling Interests	7,214	7,091
Total Equity	3,864,839	3,766,393
Total Liabilities and Equity	$ 6,518,420	$ 6,444,119