Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Assets
Cash and cash equivalents	$ 440,810	$ 512,431
Restricted cash	47,205	28,538
Investments in marketable equity securities and other investments	497,662	418,938
Accounts receivable, net	375,223	399,204
Deferred income taxes	0	3,974
Inventories	2,484	7,985
Other current assets	76,936	82,692
Current assets of discontinued operations	70,360	0
Total Current Assets	1,510,680	1,453,762
Property, Plant and Equipment, Net	910,636	1,081,237
Investments In Affiliates	32,997	15,535
Goodwill, Net	1,293,482	1,317,915
Indefinite-Lived Intangible Assets, Net	541,478	539,728
Amortized Intangible Assets, Net	43,542	45,577
Prepaid Pension Cost	529,165	604,823
Deferred Charges and Other Assets	49,161	46,492
Noncurrent Assets of Discontinued Operations	184,740	0
Total Assets	5,095,881	5,105,069
Liabilities and Equity
Accounts payable and accrued liabilities	478,827	486,396
Income taxes payable	22,341	726
Deferred income taxes	29,669	0
Deferred revenue	402,074	395,837
Dividends declared	206	0
Short-term borrowings	3,022	243,327
Current liabilities of discontinued operations	57,823	0
Total Current Liabilities	993,962	1,126,286
Postretirement Benefits Other Than Pensions	36,301	59,949
Accrued Compensation and Related Benefits	215,649	216,280
Other Liabilities	86,021	109,774
Deferred Income Taxes	521,489	529,427
Long-Term Debt	448,067	453,384
Noncurrent Liabilities of Discontinued Operations	45,732	0
Total Liabilities	2,347,221	2,495,100
Redeemable Noncontrolling Interest	5,982	12,655
Redeemable Preferred Stock	10,665	11,096
Preferred Stock	0	0
Common Stockholders' Equity
Common stock	20,000	20,000
Capital in excess of par value	261,751	240,746
Retained earnings	4,626,311	4,546,775
Accumulated Other Comprehensive Income (Loss) [Abstract]
Cumulative foreign currency translation adjustment	24,011	26,072
Unrealized gain on available-for-sale securities	158,886	110,553
Unrealized gain on pensions and other postretirement plans	118,159	117,169
Cash flow hedge	(785)	(940)
Cost of Class B common stock held in treasury	(2,476,613)	(2,474,347)
Total Common Stockholders' Equity	2,731,720	2,586,028
Noncontrolling interests	293	190
Total Equity	2,732,013	2,586,218
Total Liabilities and Equity	$ 5,095,881	$ 5,105,069