Consolidated Statements of Equity (USD $) In Thousands	Total	Redeemable Noncontrolling Shareholder's Interest [Member]	Common Stock [Member]	Capital In Excess of Par Value [Member]	Retained Earnings [Member]	Cumulative Other Comprehensive Income (Loss) [Member]	Common Shares in Treasury [Member]	Total Parent Stockholders' Equity [Member]	Noncontrolling Shareholders' Interests in Consolidated Subsidiaries [Member]
Beginning Balance at Dec. 31, 2011	$ 697,890		$ 87,850	$ 1,042	$ 1,464,392	$ (520,878)	$ (454,605)	$ 577,801	$ 120,089
Net income	252,426				220,371			220,371	32,055
Other comprehensive income (loss)	(28,505)					(30,648)		(30,648)	2,143
Comprehensive income (loss)	223,921				220,371	(30,648)		189,723	34,198
Dividends payable to noncontrolling shareholder	(3,495)								(3,495)
Acquisition of noncontrolling shareholders' interests	(71)			(71)				(71)
Stock compensation plans, including tax benefit	16,444			(52)	(554)		17,050	16,444
Cash dividends - $.42 per share	(26,273)				(26,273)			(26,273)
Ending Balance at Dec. 31, 2012	908,416		87,850	919	1,657,936	(551,526)	(437,555)	757,624	150,792
Net income	133,565				111,013			111,013	22,552
Other comprehensive income (loss)	144,711					141,506		141,506	3,205
Comprehensive income (loss)	278,276				111,013	141,506		252,519	25,757
Dividends payable to noncontrolling shareholder	(9,790)								(9,790)
Stock compensation plans, including tax benefit	7,327			3,514	(734)		4,547	7,327
Cash dividends - $.42 per share	(26,604)				(26,604)			(26,604)
Ending Balance at Dec. 31, 2013	1,157,625		87,850	4,433	1,741,611	(410,020)	(433,008)	990,866	166,759
Reclassification of redeemable noncontrolling shareholder interest	(152,250)	152,250		(3,838)	(24,447)			(28,285)	(123,965)
Net income	236,822
Net income	217,556				213,578			213,578	3,978
Other comprehensive income (loss)	(124,877)
Net income		19,266
Comprehensive income (loss)	111,945
Other comprehensive income (loss)	(124,315)					(120,582)		(120,582)	(3,733)
Other comprehensive income (loss)		(562)
Comprehensive income (loss)	93,241				213,578	(120,582)		92,996	245
Comprehensive income (loss)		18,704
Dividends payable to noncontrolling shareholder	(2,570)	(5,243)							(2,570)
Sale of interest in subsidiary		(165,711)
Accelerated share repurchase program	(200,000)			(2,010)	(37,990)		(160,000)	(200,000)
Stock compensation plans, including tax benefit	13,753			7,157	(88)		6,684	13,753
Cash dividends - $.42 per share	(25,538)				(25,538)			(25,538)
Ending Balance at Dec. 31, 2014	$ 884,261		$ 87,850	$ 5,742	$ 1,867,126	$ (530,602)	$ (586,324)	$ 843,792	$ 40,469