CONSOLIDATED STATEMENTS OF EQUITY (USD $)	Common Stock [Member]	Capital In Excess Of Par Value [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total
Beginning balance at Dec. 31, 2010	$ 128,570,000	$ 2,500,886,000	$ 1,503,681,000	$ (177,339,000)	$ 3,955,798,000
Beginning balance (in shares) at Dec. 31, 2010	128,570,000
Net earnings (loss)	0	0	(70,778,000)	0	(70,778,000)
Common stock issued
Acquisitions (in shares)	373,000
Acquisitions	373,000	18,347,000	0	0	18,720,000
401(k) Trustee (Note 13) (in shares)	111,000				110,881
401(k) Trustee (Note 13)	111,000	4,634,000	0	0	4,745,000
Share-based compensation plans (in shares)	191,000
Share-based compensation plans	191,000	2,041,000	0	0	2,232,000
Share-based compensation expense	0	18,454,000	0	0	18,454,000
Excess tax benefits from share-based compensation	0	121,000	0	0	121,000
Accrued dividends on share-based compensation awards	0	257,000	(257,000)	0	0
Cash dividends on common stock	0	0	(98,172,000)	0	(98,172,000)
Other comprehensive income (loss)	0	0	0	(39,505,000)	(39,505,000)
Other	0	0	2,000	0	2,000
Ending balance at Dec. 31, 2011	129,245,000	2,544,740,000	1,334,476,000	(216,844,000)	3,791,617,000
Ending balance (in shares) at Dec. 31, 2011	129,245,000
Net earnings (loss)	0	0	(52,593,000)	0	(52,593,000)
Common stock issued
Acquisitions (in shares)	61,000
Acquisitions	61,000	(199,000)	0	0	(138,000)
401(k) Trustee (Note 13) (in shares)					0
Share-based compensation plans (in shares)	415,000
Share-based compensation plans	415,000	7,113,000	0	0	7,528,000
Share-based compensation expense	0	17,474,000	0	0	17,474,000
Excess tax benefits from share-based compensation	0	267,000	0	0	267,000
Reclass deferred compensation liability to equity (Note 13)	0	10,764,000	0	0	10,764,000
Accrued dividends on share-based compensation awards	0	51,000	(51,000)	0	0
Cash dividends on common stock	0	0	(5,183,000)	0	(5,183,000)
Other comprehensive income (loss)	0	0	0	(8,673,000)	(8,673,000)
Other	0	(1,000)	0	0	(1,000)
Ending balance at Dec. 31, 2012	129,721,000	2,580,209,000	1,276,649,000	(225,517,000)	3,761,062,000
Ending balance (in shares) at Dec. 31, 2012	129,721,000
Net earnings (loss)	0	0	24,382,000	0	24,382,000
Common stock issued
401(k) Trustee (Note 13) (in shares)	71,000				71,208
401(k) Trustee (Note 13)	71,000	3,750,000	0	0	3,821,000
Share-based compensation plans (in shares)	408,000
Share-based compensation plans	408,000	5,485,000	0	0	5,893,000
Share-based compensation expense	0	22,093,000	0	0	22,093,000
Excess tax benefits from share-based compensation	0	161,000	0	0	161,000
Accrued dividends on share-based compensation awards	0	5,000	(5,000)	0	0
Cash dividends on common stock	0	0	(5,191,000)	0	(5,191,000)
Other comprehensive income (loss)	0	0	0	125,886,000	125,886,000
Other	0	0	(1,000)	0	(1,000)
Ending balance at Dec. 31, 2013	$ 130,200,000	$ 2,611,703,000	$ 1,295,834,000	$ (99,631,000)	$ 3,938,106,000
Ending balance (in shares) at Dec. 31, 2013	130,200,000