CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Cumulative Preferred Stock [Member]	Common Stock [Member]	Capital In Excess Of Par Value [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Treasury Stock [Member]	Total
Balance at beginning of period at Dec. 31, 2014		$ 195,040	$ 906,741	$ 8,728,032	$ (170,255)	$ (1,086,124)
Exercise of stock options, including income tax benefits		16	(376)
Foreign currency translation gain (loss), net of income taxes					(266,614)		$ (266,614)
Purchase of treasury shares							(250,000)
Net loss for the period				(88,275)			(88,275)
Other			(65)
Restricted stock transactions and other			(38,032)
Cash dividends				(124,581)
Retirement and postretirement benefit plans, net of income taxes					5,989		5,989
Sale of stock under employee stock purchase plans						246
Stock-based compensation			24,285
Deferred loss on interest rate hedges, reclassified to interest expense, net of income taxes					963		963
Awarded restricted stock, net of forfeitures						29,056
Balance at end of period at Jun. 30, 2015		195,056	892,553	8,515,176	(429,917)	(1,306,822)	7,866,046
Balance at beginning of period at Dec. 31, 2015		195,056	910,074	6,212,201	(704,542)	(1,306,061)	5,306,728
Foreign currency translation gain (loss), net of income taxes					161,891		161,891
Net loss for the period				(195,872)			(195,872)
Other			(214)
Restricted stock transactions and other			(10,078)
Cash dividends				(120,535)
Retirement and postretirement benefit plans, net of income taxes					5,029		5,029
Sale of stock under employee stock purchase plans						334
Stock-based compensation			14,454
Deferred loss on interest rate hedges, reclassified to interest expense, net of income taxes					963		963
Awarded restricted stock, net of forfeitures						8,993
Balance at end of period at Jun. 30, 2016		$ 195,056	$ 914,236	$ 5,895,794	$ (536,659)	$ (1,296,734)	$ 5,171,693