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 Income (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		2	(367)
Foreign currency translation gain (loss), net of income taxes					(298,595)		$ (298,595)
Net loss for the period				(14,441)			(14,441)
Other			(15)
Restricted stock transactions and other			(37,771)
Cash dividends				(62,287)
Retirement and postretirement benefit plans, net of income taxes					3,294		3,294
Sale of stock under employee stock purchase plans						79
Stock-based compensation			11,867
Deferred loss on interest rate hedges, reclassified to interest expense, net of income taxes					482		482
Awarded restricted stock, net of forfeitures						28,796
Balance at end of period at Mar. 31, 2015		195,042	880,455	8,651,304	(465,074)	(1,057,249)	8,204,478
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					148,669		148,669
Net loss for the period				(198,802)			(198,802)
Other			(128)
Restricted stock transactions and other			(9,972)
Cash dividends				(60,267)
Retirement and postretirement benefit plans, net of income taxes					2,516		2,516
Sale of stock under employee stock purchase plans						197
Stock-based compensation			6,759
Deferred loss on interest rate hedges, reclassified to interest expense, net of income taxes					482		482
Awarded restricted stock, net of forfeitures						8,906
Balance at end of period at Mar. 31, 2016		$ 195,056	$ 906,733	$ 5,953,132	$ (552,875)	$ (1,296,958)	$ 5,205,088